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LFTCXO070898
TCXO, GPS, 38.4 MHz, 0.5 ppm, SMD, 2.5mm x 2mm, Clipped Sinewave, 3.3 V, IQXT-260
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- Manufacturer: IQD FREQUENCY PRODUCTS
- Product type: Temperature Compensated - TCXO Oscillators
- Frequency Nom: 38.4MHz
- Product Range: IQXT-260
- Oscillator Case: SMD, 2.5mm x 2mm
- Supply Voltage Nom: 3.3V
- Frequency Stability + / -: 0.5ppm
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Oscillator Output Compatibility: Clipped Sinewave
| Delivery and price | |
|---|---|
| Units per pack | 40 |
| Price | 2.69 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**TCXO Specification** _**IQXT-260**_
## **ISSUE 1; April 2016**
## **Description**
- The IQXT-260 employs an analogue ASIC for the oscillator and a high order temperature compensation circuit in a 2.5 x 2.0mm size package. The device can be placed in power down mode through a single input pin. During standard operation, power consumption is minimised by operating down to a supply voltage of 1.8V. The IQXT-260's high stability, low power consumption, small footprint and powerful compensation method makes it a TCXO ideally suited for demanding GPS mobile applications.
Applications:
- GPS Smartphone PNS Consumer Communications
- Wi-Fi
- WiMax/W-LAN
## **Outline (mm) Pad 1 GND/NC**
- Features: Frequency slope and perturbation specifications can be customised to the application requirement Excellent phase noise performance Standard temperature stability choices are ±0.5ppm, ±1ppm, ±1.5ppm and ±2.5ppm over wide temperature ranges
## **Frequency Parameters**
- Frequency 10.0MHz to 52.0MHz Frequency Tolerance ±1.00ppm Frequency Stability ±0.50ppm to ±2.50ppm
- Frequency calibration: Offset from nominal frequency measured at 25°C±2°C
- Frequency stability over temperature: referenced to the midpoint between minimum and maximum frequency value over the specified temperature range. Control voltage set to midpoint of control voltage (Note 1)
- Frequency slope, minimum of 1 frequency reading every 2°C, over the operating temperature range (Note 1): 0.1 to 1ppm/°C
## **Outline (mm) = Pad 1 VC**
- Static temperature hysteresis: frequency change after reciprocal temperature ramped over the operating range. Frequency measured before and after at 25°C: ±0.6ppm max
- Supply voltage variation (±5% change at 25°C): ±0.1ppm max
- Load variation (±10% change, note 2): ±0.2ppm max
- Long term stability, frequency drift over 1 year at 25°C: ±1ppm max
## **Electrical Parameters**
- Reflow shift: Two consecutive reflows as per profile after 1 hour recovery at 25°C: ±1ppm max
- Supply voltage range: 1.8 to 3.3V
- Supply current (see note 2)
- Note 1: Parts should be shielded from drafts causing unexpected thermal gradients. Temperature changes due to ambient air currents can lead to short term frequency drift.
- Note 2: Specified for the load stated in the oscillator output section at 25°C
- Note 3: External AC-Coupled output requires an external capacitor ≥1nF recommended.
- Note 4: Frequency shift ≤1ppm after environmental conditions
## **Sales Office Contact Details:**
UK: +44 (0)1460 270200 Germany: 0800 1808 443
France: 0800 901 383 USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
Printed on 21 Jul 16 15:23 using Model Data Sheet V1.2550
Page 1 of 4
**TCXO Specification** _**IQXT-260**_
## **Frequency Adjustment**
Pulling ±10ppm min Input Impedence 500kΩ min **Operating Temperature Ranges** -40 to 85°C
## **Output Details**
Output Compatability Clipped Sine Drive Capability 10kΩ//10pF ±10% Output: DC coupled (see note 3)
## **Output Control**
Control voltage range: The nominal control voltage value is midway between the minimum and maximum. Voltage control should not exceed the supply voltage +0.2V or GND. Supply voltage ≤2.3V): 0.3 to 1.5V Supply voltage >2.3V: 0.4 to 2.4V
Power Down Mode: Logic low (20%Vs max) to E/D disables output. Logic high (80%Vs min) to E/D enables output. Standby current: 0.01μA max
- Start-Up Time (amplitude) within 90% of specified output: 0.5ms max
- Start-Up Time (frequency) within ±0.5ppm of steady state: 2ms max
## **Output Levels**
Output voltage level (at min supply voltage): 0.8V min (Note 2)
## **Noise Parameters**
Phase noise for a 38.4MHz oscillator @ 25°C:
- -62dBc/Hz @ 1Hz
- -86dBc/Hz @ 10Hz
- -109dBc/Hz @ 100Hz
- -132dBc/Hz @ 1kHz
- -148dBc/Hz @ 10kHz
## **Environmental Parameters**
- Shock [MIL-STD-202 M213] (Note 4): Half sine-wave acceleration of 3000G peak amplitude. Duration: 0.3ms, Velocity: 12.3ft/s
- Moisture resistance [MIL-STD-202 M106g] (Note 4): 1000 hours at 85°C, 85% relative humidity. Biased.
- Thermal cycling [JESD22 METHOD JA-104C] (Note 4): 1000 temperature cycles, where each cycle consists of a 25 minutes soak time at -40°C followed by a 25 minute soak time at 85°C, with a 60 second maximum transition time between temperatures. Air to air transition.
- Vibration [JESD22-B103-B] (Note 4): 10G peak acceleration for 20 minutes. 12 cycles in each of the 3 orientations. Test from 10-2000Hz
- Storage Temperature Range: -40 to 85°C
## **Sales Office Contact Details:**
UK: +44 (0)1460 270200 Germany: 0800 1808 443
France: 0800 901 383 USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
Printed on 21 Jul 16 15:23 using Model Data Sheet V1.2550
Page 2 of 4
**TCXO Specification** _**IQXT-260**_
## **Ordering Information**
- *minimum information required Frequency* Model* Supply Voltage* Pad 1 function*
- Frequency Stability*
Operating Temperature Range*
## **Compliance**
- RoHS Status (2011/65/EU)
RoHS Status (2011/65/EU) Compliant REACh Status Compliant MSL Rating (JDEC-STD-033): Not Applicable
## **Packaging Details**
- Pack Style: Reel Tape & reel in accordance with EIA-481-D Pack Size: 3,000
- Pack Style: Bulk Loose in bulk pack Pack Size: 1
## **Outline (mm) = Pad 1 E/D**
## **Pb-Free Reflow**
## **Electrical Specification - maximum limiting values 0.0V**
|**Frequency**|**Frequency**<br>**Max**|**Temperature**<br>**Range**|**Stability**<br>**(Min)**|**Current**<br>**Draw**|**Rise and Fall**<br>**Time**|**Duty Cycle**|
|---|---|---|---|---|---|---|
|||°C|ppm|mA|ns|%|
|10.0MHz|52.0MHz|-40 to 85|±0.5|2|-|-|
_This document was correct at the time of printing; please contact your local sales office for the latest version. Click to view latest version on our website._
## **Sales Office Contact Details:**
UK: +44 (0)1460 270200 Germany: 0800 1808 443
France: 0800 901 383
USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
Printed on 21 Jul 16 15:23 using Model Data Sheet V1.2550
Page 3 of 4
**TCXO Specification** _**IQXT-260**_
**Chipset Approval Table**
|**IQD Model**<br>a|**Ref No.**<br>a|**Frequency**<br> a|**Chipset Type**|**IC Supplier**||
|---|---|---|---|---|---|
|IQXT-260-5<br>~~te~~|512883<br>~~te —~~|26MHz<br>~~—~~|BCM2075, BCM2076, BCM4750,<br>BCM4751, BCM47511, BCM4752,<br>BCM47521,BCM4760<br>~~—~~|Broadcom<br>~~—~~|~~—~~|
|IQXT-260-6<br>~~te~~|512238<br>~~te —~~|26MHz<br>~~—~~|MediaTek Combo Chip, MT6620,<br>MT6628,MT6627<br>~~—~~|Mediatek<br>~~—~~|~~—~~|
|IQXT-260-7<br>~~te~~|511890<br>~~te —~~|19.2MHz<br>~~—~~|APQ Family, APQ8064<br>~~—~~|Qualcomm<br>~~—~~|~~—~~|
|IQXT-260-8<br>~~——~~|513644<br>~~——~~|26MHz<br>~~——~~|TBA<br>~~——~~|uBlox<br>~~——~~|~~——~~|
|IQXT-260-9<br>~~——~~|511743<br>~~——~~|16.369MHz<br>~~——~~|SirfStar 3 (SS3), SirfStar 4 (SS4),<br>SirfStar 5(SS5)<br>~~——~~|CSR<br>~~——~~|~~——~~|
|IQXT-260-10<br>~~——~~|511741<br>~~——~~|26MHz<br>~~——~~|SirfStar 3 (SS3), SirfStar 4 (SS4),<br>SirfStar 5(SS5)<br>~~——~~|CSR<br>~~——~~|~~——~~|
|IQXT-260-11<br>~~——~~<br>~~{|~~<br>~~P|~~|512242<br>~~——~~<br>~~{|~~<br>~~P|~~|19.2MHz<br>~~——~~<br><br>|APQ Family, APQ8064<br>~~——~~<br><br>~~ff~~<br>|Qualcomm<br>~~——~~<br><br>~~ff~~<br>|~~——~~<br><br>~~ff~~<br>|
|IQXT-260-12<br>~~{|~~<br>~~P|~~|511911<br>~~{|ff~~<br>~~P|~~|26MHz<br>~~ff~~<br>|u-blox 6 (UBX-M6000,<br>UBX-M6010), u-blox 7<br>(UBX-M7020), u-blox 8<br>(UBX-M8030)<br>~~ff~~<br>~~ff~~<br>|uBlox<br>~~ff~~<br>~~ff~~<br>|~~ff~~<br>~~ff~~<br>|
|IQXT-260-13<br>~~{|~~<br>~~P|~~|513636<br>~~{|ff~~<br>~~P|~~|26MHz<br>~~ff~~<br>|uBlox<br>~~ff~~<br>~~ff~~<br>|TBA<br>~~ff~~<br>~~ff~~<br>|~~ff~~<br>~~ff~~<br>|
|IQXT-260-16<br>~~{|~~<br>~~P|~~<br>~~|~~|512222<br>~~{|~~<br>~~P|tt~~<br>~~{|~~|19.2MHz<br><br>~~tt~~<br>~~{|~~<br>~~{|~~|MDM Family, MDM6xxx,<br>MDM7xxx, MDM8xxx, MDM6085,<br>MDM6270,MDM6200, MDM6600,<br>MDM8200A, MDM8220,<br>MDM8215,MDM8225<br><br>~~ff~~<br>~~tt~~<br>~~{|~~|Qualcomm<br><br>~~ff~~<br>~~tt~~<br>|~~ff~~<br>~~tt~~<br>|
|IQXT-260-17<br>~~P|~~<br>~~|~~|512240<br>~~P|~~<br>~~{|~~|19.2MHz<br><br>~~{|~~<br>~~{|~~|MDM Family, MDM6xxx,<br>MDM7xxx, MDM8xxx, MDM6085,<br>MDM6270,MDM6200, MDM6600,<br>MDM8200A, MDM8220,<br>MDM8215,MDM8226<br>~~ff~~<br><br>~~{|ff~~|Qualcomm<br>~~ff~~<br><br>~~ff~~|~~ff~~<br><br>~~ff~~|
|IQXT-260-18<br>~~|~~|513028<br>~~{|~~|26MHz<br>~~{|~~<br>~~{|~~|TBA<br>~~{|ff~~|TBA<br>~~ff~~|~~ff~~|
|IQXT-260-26<br>~~|~~|514621<br>~~{|~~|16.369MHz<br>~~{|~~<br>~~{|~~|SirfStar 5 (SS5)<br>~~{|~~|CSR<br>||
|IQXT-260-27<br>~~|~~|514054<br>~~{|~~|38.4MHz<br>~~{|~~<br>~~{|~~|DWM1000<br>~~{|~~|Decawave<br>||
**Sales Office Contact Details:**
UK: +44 (0)1460 270200 Germany: 0800 1808 443
France: 0800 901 383 USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
Printed on 21 Jul 16 15:23 using Model Data Sheet V1.2550
Page 4 of 4
Updated at February 9, 2023
IQD Frequency Products is a recognized market leader in the frequency control and specialized timing sector. Known for delivering highly reliable and precise solutions, the company serves a broad spectrum of applications ranging from commercial-grade electronics to high-reliability industrial and automotive systems. Their commitment to quality is underscored by stringent manufacturing and testing standards, including ISO 9001 and automotive-grade certifications such as AEC-Q200. The comprehensive selection of IQD components focuses primarily on foundational timing devices, notably an extensive range of quartz crystals and standard clock oscillators. These core components provide the stable and accurate frequency generation required for diverse circuit designs, microcontrollers, and communication interfaces. Available in a variety of frequencies, tolerances, and packaging options, these crystals and oscillators form the reliable backbone of countless digital and RF systems. For more demanding environments that require enhanced precision, the portfolio also features specialized oscillator configurations. This includes advanced Temperature Compensated (TCXO) and Voltage Controlled (VC-TCXO) oscillators. These highly engineered timing solutions are designed to maintain exceptional frequency stability across fluctuating temperatures and varying operational conditions, making them ideal for telecommunications, networking infrastructure, and precision instrumentation.
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