The ADR291/ADR292GRM family is a series of voltage references providing stable and accurate output voltages from supplies as low as 2.8 V for the ADR291. Output voltage options are 2.5 V and 4.096 V for the ADR291 and ADR292, respectively.
Quiescent current is only 12 μA, making these devices ideal for battery-powered instrumentation. Three electrical grades are available offering initial output accuracies of ±2 mV, ±3 mV, and ±6 mV maximum for the ADR291, and ±3 mV, ±4 mV, and ±6 mV maximum for the ADR292. Temperature coefficients for the three grades are 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C maximum, respectively. Line regulation and load regulation are typically 30 ppm/V and 30 ppm/mA, maintaining the reference’s overall high performance. For a device with 5.0 V output, refer to the ADR293 data sheet.
The ADR291 and ADR292GRM references are specified over the extended industrial temperature range of −40°C to +125°C. Devices are available in the 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
Feature
- Supply Range 2.8 V to 15 V, ADR2914.4 V to 15 V, ADR292
- Supply Current 15 µA Max
- Low-Noise 8 µV and 12 µV p-p (0.1 Hz to 10 Hz)
- High Output Current 5 mA
- Temperature Range -40ºC to +125ºC
- Pin Compatible with/
Applications
- Portable instrumentation
- Precision reference for 3 V and 5 V systems
- Analog-to-digital and digital-to-analog converter reference
- Solar-powered applications
- Loop-current-powered instruments
(Picture: Pinout)
