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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 Texas Instruments REF35/REF35-Q1 Ultra-Low-Power Precision Voltage References operate from -40°C to +125°C and are functional from -55°C to +125°C. The wide temperature range is suited for industrial applications.

The REF35/REF35-Q1 supplies up to 10mA current with 8.5ppmp-p noise and 30ppm/mA load regulation. With this feature set, REF35/REF35-Q1 creates a strong low-noise, high-accuracy power supply for precision sensors and 12–16b data converters. The REF35/REF35-Q1 components are available in wide output voltage variants from 1.024V to 5.0V and are offered in a space-saving SOT23-6 pin package. The REF35-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Ultra-low 680nA (typical) quiescent current
  • ±0.05% (maximum) initial accuracy
  • 10ppm/°C temperature coefficient (maximum for -40°C to +125°C)
  • 8.5ppmP-P output 1/f noise (0.1Hz to 10Hz)
  • NR pin to reduce noise
  • EN pin to reduce shutdown current consumption
  • 20ppm long-term stability at 1k hours
  • 20ppm thermal hysteresis
  • Temperature ranges
    • -40°C to +125°C specified
    • -55°C to +125°C operating
    • -65°C to +170°C storage
  • +10mA, -5mA output current
  • 1.024V, 1.2V, 1.25V, 1.6V, 1.8V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, 5.0V output voltage options
  • Small footprint, 6-pin SOT-23 package, 2.90mm × 1.60mm

Applications

  • Flow transmitters
  • Blood glucose monitors
  • Servo drive control modules
  • Power quality analyzers
  • Fault indicators
  • Oscilloscopes
  • Process analytics
  • Optical module

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

Videos

Typical Applications

Application Circuit Diagram - Texas Instruments REF35/REF35-Q1 Precision Voltage References

Texas Instruments REF35/REF35-Q1 Precision Voltage References