ADR121 Datasheet

• Initial accuracy
  A grade: ±0.24%
  B grade: ±0.12% 
• Maximum temperature coefficient
  A grade: 25 ppm/°C
  B grade: 9 ppm/°C 
• Low dropout: 300 mV for ADR121, ADR125 
• High output current: +5 mA/−2 mA 
• Low typical operating current: 85 μA 
• Input range: 2.7 V to 18 V for ADR127
• Temperature range: −40°C to +125°C 
• Tiny TSOT (UJ-6) package 

• Battery-powered instrumentation
• Portable medical equipment
• Data acquisition systems
• Automotive

The ADR121 are a family of micropower, high precision, series mode, band gap references with sink and source capability. The parts feature high accuracy and low power consumption in a tiny package. The ADR12x design includes a patented temperature-drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. temperature characteristics.

The ADR12x is a low dropout voltage reference, requiring only 300 mV for ADR121 above the nominal output voltage on the input to provide a stable output voltage. This low dropout performance, coupled with the low 85 μA operating current, makes the ADR12x ideal for battery-powered applications.

Available in an extended industrial temperature range of −40°C to +125°C, the ADR121 are housed in the tiny TSOT (UJ-6) package.