# TCXO, GPS, 26 MHz, 0.5 ppm, SMD, 2mm x 1.6mm, Clipped Sinewave, 1.8 V, IQXT-272
**URL**: https://novapart.co/products/LFTCXO070038/tcxo-gps-26-mhz-05-ppm-smd-2mm-x-16mm-clipped
**SKU**: LFTCXO070038
**Manufacturer**: IQD FREQUENCY PRODUCTS
**Category**: Crystals & Oscillators || Oscillators || Temperature Compensated - TCXO Oscillators
**Price**: €3.6800
**Stock**: 10+
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2627333RL/)
**TCXO Specification** _**IQXT-272**_
## **ISSUE 1; October 2015**
## **Outline (mm) Pad 1 GND/NC**
## **Description**
- The IQXT-272 employs an analogue ASIC for the oscillator and a high order temperature compensation circuit in a 2.0 x 1.6mm 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-272's high stability, low power consumption, small footprint and powerful compensation method makes it a TCXO ideally suited for demanding GPS mobile applications.
- Applications:
- Communications Consumer GPS
- Features: Excellent phase noise performance Low start up drift rate Height less than 0.8mm Operates at 1.8V supply Power Down Mode Temperature sensor Standard temperature stability of ±0.5ppm over wide temperature ranges
**Outline (mm) Pad 1 VC**
## **Frequency Parameters**
- Frequency 13.0MHz to 52.0MHz Frequency Tolerance ±2.00ppm Frequency Stability ±0.50ppm to ±2.00ppm
- Frequency calibration + reflow: Offset from the nominal frequency measured at 25˚C ±2˚C. Two consecutive reflows as per profile after 2 hours relaxation at 25°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): 0.05 to 1ppm/°C
## **Pb-Free Reflow**
- 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
**Sales Office Contact Details:**
UK: +44 (0)1460 270200 France: 0800 901 383 Germany: 0800 1808 443 USA: +1.760.318.2824
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
Printed on 26 Apr 16 10:52 using Model Data Sheet V1.2550
Page 1 of 3
**TCXO Specification** _**IQXT-272**_
## **Electrical Parameters**
- Supply voltage range: 1.8 to 3.0V Supply current (see note 2) Temperature Sensor: Temperature sensor output voltage at 25°C: 0.85 to 1.05V Temperature sensor slope: -8.9 to -8.5 mV/°C Temperature sensor output impedance at 25°C: 1.5kΩ max 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-Coupling capacitor required. 1nF or greater recommended.
Note 4: Frequency shift ≤1ppm after environmental conditions
## **Frequency Adjustment**
Pulling ±6ppm to ±30ppm Input Impedence 500kΩ min 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
Linearity (deviation from straight line curve fit): 10% max
## **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 voltage level (at min supply voltage): 0.8V min (Note 2)
## **Output Control**
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
## **Noise Parameters**
Phase Noise (typ @ 26MHz):
- -62dBc/Hz @ 1Hz
- -86dBc/Hz @ 10Hz
- -109dBc/Hz @ 100Hz
- -132dBc/Hz @ 1kHz
- -148dBc/Hz @ 10kHz
- -149dBc/Hz @ 100kHz
## **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 26 Apr 16 10:52 using Model Data Sheet V1.2550
Page 2 of 3
**TCXO Specification** _**IQXT-272**_
## **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 4 minutes per sweep. 4 sweeps in each of the 3 orientations. Swept from 20-2000Hz
Storage Temperature Range: -40 to 85°C
## **Ordering Information**
*minimum information required
Frequency* Model*
Supply Voltage* Pad 1 function* Frequency Stability* Operating Temperature Range*
## **Compliance**
RoHS Status (2011/65/EU) Compliant REACh Status Compliant MSL Rating (JDEC-STD-033): Not Applicable
## **Packaging Details**
Pack Style: Bulk Loose in bulk pack Pack Size: 1
Pack Style: Reel Tape & reel in accordance with EIA-481-D Pack Size: 4,000
**Electrical Specification - maximum limiting values 0.0V**
**==> picture [487 x 104] intentionally omitted <==**
**----- Start of picture text -----**
Frequency Frequency Temperature Stability Current Rise and Fall Duty Cycle
Max Range (Min) Draw Time
°C ppm mA ns %
13.0MHz 52.0MHz -40 to 85 ±0.5 2.2 - -
er
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.
Chipset Approval Table
**----- End of picture text -----**
**IQD Model Ref No. Frequency Chipset Type IC Supplier** IQXT-272-1 509160 26MHz SirfStar 5 (SS5) CSR ~~Ty~~
## **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 26 Apr 16 10:52 using Model Data Sheet V1.2550
Page 3 of 3
## Links
- [View this product on Novapart](https://novapart.co/products/LFTCXO070038/tcxo-gps-26-mhz-05-ppm-smd-2mm-x-16mm-clipped)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/iqd-frequency-products/lftcxo070038/tcxo-gps-26mhz-2-05x1-65mm-clip/dp/2627333RL)
---
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