Texas Instruments REF35/REF35-Q1 Precision Voltage References
Texas Instruments REF35/REF35-Q1 Ultra-Low-Power High-Precision Voltage References are nanopower, low-drift, high-precision reference devices with high ±0.05% initial accuracy with power consumption below 700nA. Low-temperature drift (10ppm/°C) and long-term drift (20ppm at 1000hrs) ensure system stability and reliability. The low power consumption combined with high precision specifications recommend the REF35/REF35-Q1 components for various portable and low-current applications. The REF35-Q1 voltage references are AEC-Q100 qualified for automotive applications. These voltage references are used in driver monitoring, fault indicators, oscilloscopes, optical modules, and automotive front cameras.
The REF35/REF35-Q1 voltage references supply up to 10mA current with 8.5ppmp-p noise and 30ppm/mA load regulation. With this feature set, REF35/REF35-Q1 devices create a strong low-noise, high-accuracy power supply for precision sensors and 12–16b data converters. The REF35/REF35-Q1 voltage references are available in wide output voltage variants from 1.024V to 5.0V and are offered in a space-saving SOT23-6 pin package.
Features
- Ultra-low 680nA (typical) quiescent current
- ±0.05% (maximum) initial accuracy
- 10ppm/°C temperature coefficient (maximum for -40°C to +125°C)
- 3.3ppmP-P output 1/f noise (0.1Hz to 10Hz)
- NR pin to reduce noise
- EN pin to reduce shutdown current consumption
- 40ppm long-term stability at 1k hours
- 70ppm thermal hysteresis
- +10mA and -5mA output current
- 1.024V, 1.2V, 1.25V, 1.6V, 1.8V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5V output voltage options
- Small footprint, 6-pin SOT-23 package, 2.90mm × 1.60mm
Applications
- REF35:
- Flow transmitters
- Blood glucose monitors
- Servo drive control modules
- Power quality analyzers
- Fault indicators
- Oscilloscopes
- Process analytics
- Optical module
- REF35-Q1:
- Automotive front cameras
- Driver monitoring
- Electric power steering
- Battery control units
Specifications
- 20mA output short circuit current
- ESD ratings
- ±2000V human-body model (HBM)
- ±750V charged-device model (CDM)
- ±0.5% output voltage accuracy
- 4ppm/V typical line regulation
- 20ppm/mA or 40ppm/mA typical load regulation
- 0.05µA to 2.6µA quiescent current range
- 2ms turn-on time
Datasheets
Videos
Typical Applications
Development Tools
Texas Instruments REF35 Voltage Reference Evaluation Module
A platform for developing the REF35 ultra-low-power voltage reference.
Texas Instruments ADC3664EVMCVAL Evaluation Module
Demonstrates the ADC3664-SP low-noise, ultra-low-power converters.
Additional Resource
Published: 2022-03-21
| Updated: 2025-09-23