ADXL358BCCZ

Data Sheet 

**ADXL358** 

**==> picture [111 x 32] intentionally omitted <==**

## Low Noise, Low Drift, Low Power, 3-Axis MEMS Accelerometer 

## **FEATURES** 

## **FUNCTIONAL BLOCK DIAGRAM** 

- 0 _g_ offset vs. temperature (all axes): ±0.2 m _g_ /°C typical 

- Ultralow noise spectral density (all axes): 80 µ _g_ /√Hz 

- Low power, VSUPPLY (LDO regulator enabled) 

- In measurement mode: 150 µA 

- In standby mode: 21 µA 

- User adjustable analog output bandwidth 

- Integrated temperature sensor 

- Voltage range options 

- VSUPPLY with internal regulators: 2.25 V to 3.6 V 

- V1P8ANA, V1P8DIG with internal LDO regulator bypassed: 1.8 V typical ± 10% 

**==> picture [212 x 117] intentionally omitted <==**

_**Figure 1. Functional Block Diagram**_ 

- Operating temperature range: −40°C to +125°C 

- 14-terminal, 4 mm × 4 mm × 1.04 mm, LGA package 

## **APPLICATIONS** 

- Inertial measurement units (IMUs)/attitude and heading reference systems (AHRSs) 

- Platform stabilization systems 

- Structural health monitoring 

- Seismic imaging 

- Tilt sensing 

- Robotics 

- Condition monitoring 

## **GENERAL DESCRIPTION** 

The analog output ADXL358[1] is a low noise density, low 0 _g_ offset drift, low power, 3-axis accelerometer with selectable measurement ranges. The ADXL358B supports the ±10 _g_ and ±20 _g_ ranges, and the ADXL358C supports the ±10 _g_ and ±40 _g_ ranges. 

The ADXL358 offers industry leading noise, minimal offset drift over temperature, and long-term stability, enabling precision applications with minimal calibration. 

The low noise of the ADXL358 over higher frequencies is ideal for condition-based monitoring and other vibration sensing applications. 

> 1 Protected by U.S. Patents 8,472,270; 9,041,462; 8,665,627; 8,917,099; 6,892,576; 9,297,825; and 7,956,621. **Rev. 0** 

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. 

**DOCUMENT FEEDBACK TECHNICAL SUPPORT** 

Data Sheet 

**ADXL358** 

## **TABLE OF CONTENTS** 

Features................................................................ 1 Applications........................................................... 1 General Description...............................................1 Functional Block Diagram......................................1 Specifications........................................................ 3 Absolute Maximum Ratings...................................5 Thermal Resistance........................................... 5 ESD Caution.......................................................5 Pin Configuration and Function Descriptions........ 6 Typical Performance Characteristics.....................7 Theory of Operation.............................................11 Applications Information...................................... 12 Axes of Acceleration Sensitivity....................... 12 Power Sequencing........................................... 12 

Power Supply Description................................ 13 VSUPPLY............................................................ 13 V1P8ANA.............................................................13 V1P8DIG............................................................. 13 VDDIO................................................................ 13 Overrange Protection....................................... 13 Self Test............................................................13 Filter................................................................. 13 Recommended Soldering Profile.........................14 PCB Footprint Pattern......................................... 15 Outline Dimensions............................................. 16 Ordering Guide.................................................16 Evaluation Boards............................................ 16 

## **REVISION HISTORY** 

## **5/2023—Revision 0: Initial Version** 

**Rev. 0 | 2 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **SPECIFICATIONS** 

TA = 25°C, VSUPPLY = 3.3 V, x-axis acceleration and y-axis acceleration = 0 _g_ , z-axis acceleration = 1 _g_ , and full-scale range = ±10 _g_ , unless otherwise noted. 

_**Table 1. Specifications**_ 

|**_Table 1. Specifications_**|**_Table 1. Specifications_**|**_Table 1. Specifications_**|**_Table 1. Specifications_**|
|---|---|---|---|
|**Parameter**<br>**Test Conditions/Comments**<br>**Min**<br>**Typ**<br>**Max**<br>**Unit**||||
|SENSOR INPUT<br>Output Full-Scale Range (FSR)<br>Nonlinearity<br>Cross Axis Sensitivity|Each axis<br>ADXL358B supports two ranges<br>ADXL358C supports two ranges<br>±10_g_<br>±40_g_|±10, ±20<br>±10, ±40<br>0.1<br>1.3<br>1|_g_<br>_g_<br>% FSR<br>% FSR<br>%|
|SENSITIVITY<br>Sensitivity at XOUT, YOUT, and ZOUT<br>Sensitivity Change due to Temperature|Ratiometric to V1P8ANA<br>±10_g_<br>±20_g_<br>±40_g_<br>TA= −40°C to +125°C|80<br>40<br>20<br>±0.02|mV/_g_<br>mV/_g_<br>mV/_g_<br>%/°C|
|0_g_OFFSET<br>0_g_Output for XOUT, YOUT, and ZOUT<br>0_g_Offset vs. Temperature (X-Axis, Y-Axis, and<br>Z-Axis)1<br>Vibration Rectification Error (VRE)2|Each axis, ±10_g_<br>Referred to V1P8ANA/2<br>TA= −40°C to +125°C<br>Offset due to 7.5_g_RMS vibration, ±10_g_range, in a 1<br>_g_orientation|±125<br>±0.2<br><0.1|m_g_<br>m_g_/°C<br>_g_|
|NOISE<br>Spectral Density3<br>X-Axis, Y-Axis, and Z-Axis|±10_g_<br>±40_g_|80<br>110|µ_g_/√Hz<br>µ_g_/√Hz|
|BANDWIDTH|−3 dB, overall transfer function4|2.4|kHz|
|SELF TEST<br>Output Change<br>X-Axis<br>Y-Axis<br>Z-Axis|±10_g_range5|0.05<br>0.2<br>0.40<br>0.05<br>0.28<br>0.40<br>1.0<br>1.7<br>2.20|_g_<br>_g_<br>_g_|
|POWER SUPPLY<br>Voltage Range<br>VSUPPLY<br>6<br>VDDIO<br>V1P8ANA, V1P8DIG<br>Current<br>Measurement Mode<br>VSUPPLY<br>V1P8ANA<br>V1P8DIG<br>Standby Mode<br>VSUPPLY<br>V1P8ANA<br>V1P8DIG<br>Turn On Time7|Internal low dropout (LDO) regulator bypassed,<br>VSUPPLY= 0 V<br>LDO regulator enabled<br>LDO regulator disabled<br>LDO regulator disabled<br>LDO regulator enabled<br>LDO regulator disabled<br>LDO regulator disabled<br>10_g_range<br>Power off to standby|2.25<br>2.5<br>3.6<br>V1P8DIG<br>2.5<br>3.6<br>1.62<br>1.8<br>1.98<br>150<br>138<br>10.5<br>21<br>7<br>9<br><10<br><10|V<br>V<br>V<br>µA<br>µA<br>µA<br>µA<br>µA<br>µA<br>ms<br>ms|



**Rev. 0 | 3 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **SPECIFICATIONS** 

_**Table 1. Specifications (Continued)**_ 

|**_Table 1. Specifications(Continued)_**|**_Table 1. Specifications(Continued)_**|**_Table 1. Specifications(Continued)_**|**_Table 1. Specifications(Continued)_**|
|---|---|---|---|
|**Parameter**<br>**Test Conditions/Comments**<br>**Min**<br>**Typ**<br>**Max**<br>**Unit**||||
|OUTPUT AMPLIFIER<br>Swing<br>Output Series Resistance|XOUT, YOUT, ZOUT, and TEMP pins<br>No load|0.03<br>V1P8ANA− 0.03<br>32|V<br>kΩ|
|TEMPERATURE SENSOR<br>Output at 25°C<br>Scale Factor||967<br>3.0|mV<br>mV/°C|
|TEMPERATURE<br>Operating Temperature Range||−40<br>+125|°C|



- 1 The temperature change is −40°C to +25°C or +25°C to +125°C. 

- 2 The VRE measurement is the shift in DC offset while the device is subject to 7.5 _g_ RMS of random vibration from 50 Hz to 2 kHz. The device under test (DUT) is configured for the ±10 _g_ range and an output data rate of 4 kHz. The VRE scales with the range setting. 

- 3 Based on characterization. 

- 4 The overall transfer function includes the sensor mechanical response and all other filters on the signal chain. 

- 5 ±10 _g_ indicates a test condition. The self test result converted to the acceleration value is independent of the selected range. 

- 6 When V1P8ANA and V1P8DIG are generated internally, VSUPPLY is valid. To disable the LDO regulator and drive V1P8ANA and V1P8DIG externally, connect VSUPPLY to VSS. 

- 7 This time is the standby to measurement mode. This specification is valid when the output is within 5 m _g_ of the final value. 

**Rev. 0 | 4 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **ABSOLUTE MAXIMUM RATINGS** 

_**Table 2. Absolute Maximum Ratings**_ 

|**_Table 2. Absolute Maximum Ratings_**|**_Table 2. Absolute Maximum Ratings_**|
|---|---|
|**Parameter**<br>**Rating**||
|Acceleration (Any Axis, Half Sine Wave, 0.1 ms Pulse<br>Width)<br>Unpowered<br>Powered<br>Vibration<br>VSUPPLYand VDDIO<br>V1P8ANAand V1P8DIGConfigured as Inputs<br>Digital Inputs (RANGE, ST1, ST2, and<br>STBY)<br>Analog Outputs (XOUT, YOUT, ZOUT, and TEMP)<br>Temperature Range<br>Operating<br>Storage|10,000_g_<br>10,000_g_<br>Per MIL-STD-883 Method<br>2007, Test Condition C<br>5.4 V<br>1.98 V<br>−0.3 V to VDDIO+ 0.3 V<br>−0.3 V to V1P8ANA+ 0.3 V<br>−40°C to +125°C<br>−55°C to +150°C|



Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. 

## **THERMAL RESISTANCE** 

Thermal performance is directly linked to printed circuit board (PCB) design and operating environment. Careful attention to PCB thermal design is required. 

θJA is the natural convection junction to ambient thermal resistance measured in a one cubic foot sealed enclosure, and ψJB is the junction to board thermal resistance. 

_**Table 3. Thermal Resistance**_ 

|**_Table 3. Thermal Resistance_**|**_Table 3. Thermal Resistance_**|**_Table 3. Thermal Resistance_**|**_Table 3. Thermal Resistance_**|
|---|---|---|---|
|**Package Type1**<br>**θJA**<br>**ψJB**<br>**Unit**||||
|CC-14-2|79.10|41.76|°C/W|



> 1 Thermal impedance simulated values are based on a JEDEC 2S2P thermal test board with four thermal vias. See JEDEC JESD-51. 

## **ESD CAUTION** 

**ESD (electrostatic discharge) sensitive device** . Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. 

**Rev. 0 | 5 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **PIN CONFIGURATION AND FUNCTION DESCRIPTIONS** 

**==> picture [70 x 65] intentionally omitted <==**

## _**Figure 2. Pin Configuration**_ 

_**Table 4. Pin Function Descriptions**_ 

|**_Table 4. Pin Function Descriptions_**|**_Table 4. Pin Function Descriptions_**|**_Table 4. Pin Function Descriptions_**|
|---|---|---|
|**Pin No.**<br>**Mnemonic**<br>**Description**|||
|1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14|RANGE<br>ST1<br>ST2<br>TEMP<br>VDDIO<br>VSSIO<br>STBY<br>V1P8DIG<br>VSS<br>V1P8ANA<br>VSUPPLY<br>XOUT<br>YOUT<br>ZOUT|Range Selection Pin. Set the RANGE pin to ground to select the ±10_g_range or set the RANGE pin to VDDIOto select the ±20_g_or ±40_g_<br>range. The RANGE pin is model dependent (see theOrdering Guidesection).<br>Self Test Pin 1. The ST1 pin enables self test mode. The ST1 pin must be forced low when not in self test mode.<br>Self Test Pin 2. The ST2 pin activates electromechanical self test actuation. The ST2 pin must be forced low when not in self test mode.<br>Temperature Sensor Output.<br>Digital Interface Supply Voltage.<br>Digital Ground.<br>Standby or Measurement Mode Selection Pin. Set the<br>STBY pin to ground to enter standby mode, or set the<br>STBY pin to VDDIOto enter<br>measurement mode.<br>Digital Supply. The V1P8DIGpin requires a decoupling capacitor. If VSUPPLYconnects to VSS, supply the voltage to the V1P8DIGpin externally.<br>Analog Ground.<br>Analog Supply. The V1P8ANApin requires a decoupling capacitor. If VSUPPLYconnects to VSS, supply the voltage to the V1P8ANApin<br>externally.<br>Supply Voltage. When VSUPPLYequals 2.25 V to 3.6 V, VSUPPLYenables the internal LDO regulator to generate V1P8DIGand V1P8ANA. For<br>VSUPPLY= VSS, V1P8DIGand V1P8ANAare externally supplied.<br>X-Axis Output.<br>Y-Axis Output.<br>Z-Axis Output.|



**Rev. 0 | 6 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **TYPICAL PERFORMANCE CHARACTERISTICS** 

All figures include data for multiple devices and multiple lots, and the figures were taken in the ±10 _g_ range and TA = 25°C, unless otherwise noted. 

**==> picture [206 x 163] intentionally omitted <==**

_**Figure 3. Frequency Response for X-Axis**_ 

**==> picture [206 x 163] intentionally omitted <==**

_**Figure 4. Frequency Response for Y-Axis**_ 

**==> picture [206 x 162] intentionally omitted <==**

_**Figure 5. Frequency Response for Z-Axis**_ 

**==> picture [207 x 160] intentionally omitted <==**

_**Figure 6. Zero g Offset Normalized Relative to 25°C vs. Temperature, X-Axis**_ 

**==> picture [207 x 159] intentionally omitted <==**

_**Figure 7. Zero g Offset Normalized Relative to 25°C vs. Temperature, Y-Axis**_ 

**==> picture [207 x 160] intentionally omitted <==**

_**Figure 8. Zero g Offset Normalized Relative to 25°C vs. Temperature, Z-Axis**_ 

**Rev. 0 | 7 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **TYPICAL PERFORMANCE CHARACTERISTICS** 

**==> picture [207 x 161] intentionally omitted <==**

_**Figure 9. Sensitivity Normalized Relative to 25°C vs. Temperature, X-Axis**_ 

**==> picture [207 x 160] intentionally omitted <==**

_**Figure 10. Sensitivity Normalized Relative to 25°C vs. Temperature, Y-Axis**_ 

**==> picture [175 x 158] intentionally omitted <==**

_**Figure 11. Sensitivity Normalized Relative to 25°C vs. Temperature, Z-Axis**_ 

**==> picture [199 x 165] intentionally omitted <==**

_**Figure 12. Zero g Offset Histogram at 25°C, X-Axis**_ 

**==> picture [199 x 165] intentionally omitted <==**

_**Figure 13. Zero g Offset Histogram at 25°C, Y-Axis**_ 

**==> picture [199 x 163] intentionally omitted <==**

_**Figure 14. Zero g Offset Histogram at 25°C, Z-Axis**_ 

**Rev. 0 | 8 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **TYPICAL PERFORMANCE CHARACTERISTICS** 

**==> picture [200 x 165] intentionally omitted <==**

_**Figure 15. Sensitivity Histogram at 25°C, X-Axis**_ 

**==> picture [200 x 165] intentionally omitted <==**

**==> picture [180 x 163] intentionally omitted <==**

_**Figure 18. VRE, X-Axis Offset from +1 g, ±10 g Range, X-Axis Orientation = +1 g**_ 

**==> picture [180 x 163] intentionally omitted <==**

_**Figure 16. Sensitivity Histogram at 25°C, Y-Axis**_ 

**==> picture [200 x 165] intentionally omitted <==**

_**Figure 17. Sensitivity Histogram at 25°C, Z-Axis**_ 

_**Figure 19. VRE, Y-Axis Offset from +1 g, ±10 g Range, Y-Axis Orientation = +1 g**_ 

**==> picture [180 x 163] intentionally omitted <==**

_**Figure 20. VRE, Z-Axis Offset from +1 g, ±10 g Range, Z-Axis Orientation = +1 g**_ 

**Rev. 0 | 9 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **TYPICAL PERFORMANCE CHARACTERISTICS** 

**==> picture [180 x 163] intentionally omitted <==**

_**Figure 21. VRE, X-Axis Offset from −1 g, ±40 g Range, X-Axis Orientation = −1 g**_ 

**==> picture [180 x 163] intentionally omitted <==**

**==> picture [183 x 147] intentionally omitted <==**

_**Figure 24. Temperature Sensor Output and Linear Offset vs. Temperature**_ 

**==> picture [176 x 162] intentionally omitted <==**

_**Figure 25. Total Supply Current at 25°C, 3.3 V**_ 

_**Figure 22. VRE, Y-Axis Offset from −1 g, ±40 g Range, Y-Axis Orientation = −1 g**_ 

**==> picture [180 x 163] intentionally omitted <==**

_**Figure 23. VRE, Z-Axis Offset from −1 g, ±40 g Range, Z-Axis Orientation = −1 g**_ 

**Rev. 0 | 10 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **THEORY OF OPERATION** 

The ADXL358 is a complete 3-axis, ultralow noise, and ultrastable offset microelectromechanical systems (MEMS) accelerometer with outputs ratiometric to the analog 1.8 V supply, V1P8ANA. The ADXL358B is pin selectable for ±10 _g_ or ±20 _g_ full scale, and the ADXL358C is pin selectable for ±10 _g_ or ±40 _g_ full scale. 

The micromachined, sensing elements are fully differential, comprising the lateral x-axis and y-axis sensors and the vertical, teeter totter z-axis sensors. The x-axis and y-axis sensors and the z-axis sensors go through separate signal paths that minimize offset drift and noise. The signal path is fully differential, except for a differential to single-ended conversion at the analog outputs of the ADXL358. 

The analog accelerometer outputs of the ADXL358 are ratiometric to V1P8ANA. Therefore, digitize these outputs carefully. The temperature sensor output is not ratiometric. The XOUT, YOUT, and ZOUT analog outputs are filtered internally with an antialiasing filter. These analog outputs also have an internal 32 kΩ series resistor that can be used with an external capacitor to set the bandwidth of the output. 

**Rev. 0 | 11 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **APPLICATIONS INFORMATION** 

Figure 26 shows the ADXL358 application circuit. The analog outputs (XOUT, YOUT, and ZOUT) are ratiometric to the 1.8 V analog voltage from the V1P8ANA pin. V1P8ANA can be powered with an on-chip LDO regulator that is powered from VSUPPLY. V1P8ANA can also be supplied externally by forcing VSUPPLY to VSS, which disables the LDO regulator. Due to the ratiometric response, the analog output requires referencing to the V1P8ANA supply when digitizing to achieve the inherent noise and offset performance of the ADXL358. The 0 _g_ bias output is nominally equal to V1P8ANA/2. The recommended option is to use the ADXL358 with a ratiometric analog-to-digital converter (ADC), for example, the Analog Devices, Inc., AD7682, and V1P8ANA providing the voltage reference. This configuration results in self cancellation of errors due to minor supply variations. 

**==> picture [203 x 129] intentionally omitted <==**

_**Figure 26. ADXL358 Application Circuit**_ 

The ADXL358 outputs two forms of filtering: internal antialiasing filtering with a cutoff frequency of approximately 1.5 kHz, and external filtering. The external filter uses a fixed, on-chip, 32 kΩ resistance in series with each output in conjunction with the external capacitors to implement the low-pass filter antialiasing and noise reduction prior to the external ADC. The antialias filter cutoff frequency must be significantly higher than the desired signal bandwidth. If the antialias filter corner is too low, ratiometricity can degrade where the signal attenuation is different from the reference attenuation. 

## **AXES OF ACCELERATION SENSITIVITY** 

Figure 27 shows the axes of acceleration sensitivity. Note that the output voltage increases when accelerated along the sensitive axis. 

**==> picture [118 x 49] intentionally omitted <==**

_**Figure 27. Axes of Acceleration Sensitivity**_ 

## **POWER SEQUENCING** 

There are two methods for applying power to the device. Typically, internal LDO regulators generate the 1.8 V power for the analog and digital supplies, V1P8ANA and V1P8DIG, respectively. Optionally, the internal LDO regulators can be disabled, and V1P8ANA and V1P8DIG can be driven by external 1.8 V supplies. 

When using the internal LDO regulators, connect VSUPPLY to a voltage source between 2.25 V and 3.6 V. In this case, the recommended power sequence is to apply power to VDDIO, followed by applying power to VSUPPLY approximately 10 µs after. If necessary, VSUPPLY and VDDIO can be powered from the same voltage source so that both are powered at the same time. However, VSUPPLY cannot be powered before VDDIO. 

To disable the internal LDO regulators, tie VSUPPLY to ground and use external 1.8 V supplies to power V1P8ANA and V1P8DIG. V1P8ANA and V1P8DIG must have the same voltage level. The maximum acceptable tolerance between the external V1P8ANA and V1P8DIG voltage levels is 50 mV. When bypassing the LDO regulators, the recommended power sequence is to apply power to VDDIO, followed by applying power to V1P8DIG approximately 10 µs after, and then applying power to V1P8ANA approximately 10 µs after. If necessary, V1P8DIG and VDDIO can be powered from the same external 1.8 V supply, which can also be tied to V1P8ANA with proper isolation so that all are powered at the same time. In this instance, proper decoupling and low frequency isolation are important to maintain the noise performance of the sensor. 

**Rev. 0 | 12 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **APPLICATIONS INFORMATION** 

## **POWER SUPPLY DESCRIPTION** 

The ADXL358 has four different power supply domains: VSUPPLY, V1P8ANA, V1P8DIG, and VDDIO. The internal analog and digital circuitry operates at 1.8 V nominal. 

## **VSUPPLY** 

VSUPPLY is 2.25 V to 3.6 V, which is the input range to the two LDO regulators that generate the nominal 1.8 V outputs for V1P8ANA and V1P8DIG. Connect VSUPPLY to VSS to disable the LDO regulators, which allows driving V1P8ANA and V1P8DIG from an external source. 

## **V1P8ANA** 

All sensor and analog signal processing circuitry operates in this domain. Offset and sensitivity of the analog output ADXL358 are ratiometric to this supply voltage. When using external ADCs, use V1P8ANA as the reference voltage. V1P8ANA can be an input or an output as defined by the state of the VSUPPLY voltage. 

## **V1P8DIG** 

V1P8DIG is the supply voltage for the internal logic circuitry. A separate LDO regulator decouples the digital supply noise from the analog signal path. V1P8ANA can be an input or an output as defined by the state of the VSUPPLY voltage. If driven externally, V1P8DIG must be the same voltage as the V1P8ANA voltage. 

## **VDDIO** 

an electrostatic force to the mechanical sensor and induces a change in output in response to the force. The self test delta (or ‑ response) is the difference in output voltage in the z axis when ST2 is high vs. ST2 is low, while ST1 is asserted. After the self test measurement is complete, bring both pins low to resume normal operation. 

## **FILTER** 

The ADXL358 uses an analog, low-pass, antialiasing filter to reduce out of band noise and to limit bandwidth. 

The analog, low-pass antialiasing filter in the ADXL358 provides a fixed −3 dB bandwidth of approximately 1.5 kHz, the frequency at which the voltage output response is attenuated by approximately 30%. The shape of the filter response in the frequency domain is that of a sinc filter. While the analog antialiasing filter attenuates the output response around and over its cutoff frequency, the MEMS sensor has a resonance at 5.5 kHz and mechanically amplifies the output response at around 2 kHz and over. These competing trends are apparent in the overall transfer function of the ADXL358, as shown in Figure 3 to Figure 5. Therefore, the overall −3 dB bandwidth of the ADXL358 is 2.4 kHz, and the overall bandwidth with ±4 dB flatness is about 4.4 kHz. 

The ADXL358 x-axis, y-axis, and z-axis analog outputs include an amplifier followed by a series 32 kΩ resistor and output to the XOUT, the YOUT, and the ZOUT pins, respectively. 

The VDDIO value determines the logic high levels for the self test pins, ST1 and ST2, as well as the STBY pin. 

The LDO regulators are operational when VSUPPLY is between 2.25 V and 3.6 V. V1P8ANA and V1P8DIG are the regulator outputs in this mode. Alternatively, when tying VSUPPLY to VSS, V1P8ANA and V1P8DIG are supply voltage inputs with a 1.62 V to 1.98 V range. 

## **OVERRANGE PROTECTION** 

To avoid electrostatic capture of the proof mass when the accelerometer is subject to input acceleration beyond its full-scale range, all sensor drive clocks turn off for 0.5 ms. In the ±10 _g_ range setting, the overrange protection activates for input signals beyond approximately ±40 _g_ (±25%), and for the ±20 _g_ and ±40 _g_ range settings, the threshold corresponds to about ±80 _g_ (±25%). When overrange protection occurs, the XOUT, YOUT, and ZOUT pins on the ADXL358 begin to drive to midscale. 

## **SELF TEST** 

The ADXL358 incorporates a self test feature that effectively tests the mechanical and electronic system. Enabling self test stimulates the sensor electrostatically to produce an output corresponding to the test signal applied as well as the mechanical force exerted. Only the z-axis response is specified to validate device functionality. 

In the ADXL358, drive the ST1 pin to VDDIO to invoke self test mode. Then, by driving the ST2 pin to VDDIO, the ADXL358 applies 

**Rev. 0 | 13 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **RECOMMENDED SOLDERING PROFILE** 

Figure 28 and Table 5 provide details about the recommended soldering profile. 

**==> picture [170 x 96] intentionally omitted <==**

_**Figure 28. Recommended Soldering Profile**_ 

_**Table 5. Recommended Soldering Profile**_ 

|**_Table 5. Recommended Soldering Profile_**||
|---|---|
|**Profile Feature**|**Condition**|
||**Sn63/Pb37**<br>**Pb-Free**|
|Average Ramp Rate from Liquid Temperature (TL) to Peak Temperature (TP)<br>Preheat<br>Minimum Temperature (TSMIN)<br>Maximum Temperature (TSMAX)<br>Time from TSMINto TSMAX(tS)<br>TSMAXto TLRamp-Up Rate<br>Liquid Temperature (TL)<br>Time Maintained Above TL(tL)<br>Peak Temperature (TP)<br>Time of Actual TP− 5°C (tP)<br>Ramp-Down Rate<br>Time from 25°C to Peak Temperature (t25°C TO PEAK)|3°C/sec maximum<br>3°C/sec maximum<br>100°C<br>150°C<br>150°C<br>200°C<br>60 sec to 120 sec<br>60 sec to 180 sec<br>3°C/sec maximum<br>3°C/sec maximum<br>183°C<br>217°C<br>60 sec to 150 sec<br>60 sec to 150 sec<br>+240°C + 0°C/−5°C<br>+260°C + 0°C/−5°C<br>10 sec to 30 sec<br>20 sec to 40 sec<br>6°C/sec maximum<br>6°C/sec maximum<br>6 minutes maximum<br>8 minutes maximum|



**Rev. 0 | 14 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **PCB FOOTPRINT PATTERN** 

Figure 29 shows the PCB footprint pattern and dimensions in millimeters. 

**==> picture [85 x 108] intentionally omitted <==**

_**Figure 29. PCB Footprint Pattern and Dimensions in Millimeters**_ 

**Rev. 0 | 15 of 16** 

**analog.com** 

Data Sheet 

**ADXL358** 

## **OUTLINE DIMENSIONS** 

**==> picture [83 x 116] intentionally omitted <==**

**==> picture [56 x 56] intentionally omitted <==**

_**Figure 30. 14-Terminal Land Grid Array [LGA] (CC-14-2) Dimensions shown in millimeters**_ 

Updated: May 23, 2023 

## **ORDERING GUIDE** 

|**ORDERING GUIDE**|**ORDERING GUIDE**|**ORDERING GUIDE**|**ORDERING GUIDE**|**ORDERING GUIDE**|
|---|---|---|---|---|
|**Model1**<br>**Temperature Range**<br>**Package Description**<br>**Packing Quantity**<br>**Package Option**|||||
|ADXL358BCCZ<br>ADXL358BCCZ-RL<br>ADXL358BCCZ-RL7<br>ADXL358CCCZ<br>ADXL358CCCZ-RL<br>ADXL358CCCZ-RL7|−40°C to +125°C<br>−40°C to +125°C<br>−40°C to +125°C<br>−40°C to +125°C<br>−40°C to +125°C<br>−40°C to +125°C|14-Terminal Land Grid Array [LGA]<br>T<br>14-Terminal Land Grid Array [LGA]<br>R<br>14-Terminal Land Grid Array [LGA]<br>R<br>14-Terminal Land Grid Array [LGA]<br>T<br>14-Terminal Land Grid Array [LGA]<br>R<br>14-Terminal Land Grid Array [LGA]<br>R|ray, 490<br>eel, 4000<br>eel, 1000<br>ray, 490<br>eel, 4000<br>eel, 1000|CC-14-2<br>CC-14-2<br>CC-14-2<br>CC-14-2<br>CC-14-2<br>CC-14-2|



> 1 Z = RoHS Compliant Part. 

## **EVALUATION BOARDS** 

_**Table 6. Evaluation Boards**_ 

|**_Table 6. Evaluation Boards_**|**_Table 6. Evaluation Boards_**|
|---|---|
|**Model1**<br>**Description**||
|EVAL-ADXL358BZ<br>A<br>EVAL-ADXL358CZ<br>A<br>EVAL-ADXL358Z<br>E|DXL358B Evaluation Board<br>DXL358C Evaluation Board<br>valuation Board|



> 1 Z = RoHS-Compliant Part. 

**==> picture [111 x 32] intentionally omitted <==**

©2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887-2356, U.S.A. 

**Rev. 0 | 16 of 16**