Datasheet Analog Devices ADR291 — 数据表

Low Noise Micropower 2.5 V and
4.096 V Precision Voltage References
ADR291/ADR292
CONNECTION DIAGRAMS Supply range
2.8 V to 15 V, ADR291
4.4 V to 15 V, ADR292
Supply current: 15 μA maximum
Low noise: 8 μV and 12 μV p-p (0.1 Hz to 10 Hz)
High output current: 5 mA
Temperature range: −40°C to +125°C
Pin-compatible with REF02/REF19x NC 1
VIN 2
NC 3 ADR291/
ADR292 8 NC 7 NC 6 VOUT
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GND 4 (Not to Scale) 5 NC NC = NO CONNECT 00163-001 FEATURES 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 NC 1 VIN 2 NC 3 GND 4 ADR291/
ADR292
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Low Noise Micropower 2.5 V
Precision Voltage Reference
ADR291W
CONNECTION DIAGRAM Qualified for automotive applications
Supply range
2.8 V to 15 V
Supply current: 15 μA maximum
Low noise: 8 μV (0.1 Hz to 10 Hz)
High output current: 5 mA
Temperature range: −40°C to +125°C
Pin compatible with REF02/REF19x NC 1
VIN 2 8 ADR291 NC NC
TOP VIEW
NC 3 (Not to Scale) 6 VOUT
5 NC
GND 4
7 NC = NO CONNECT 08554-001 FEATURES Figure 1. 8-Lead SOIC_N (R-8) APPLICATIONS
Automotive Li-Ion Battery Measurement
Analog-to-digital and digital-to-analog converter reference GENERAL DESCRIPTION
The ADR291 is a low noise, micropower precision voltage reference that uses an XFET® reference circuit. The XFET architecture
offers significant performance improvements over traditional
band gap and buried Zener-based references. Improvements
include one quarter of the voltage noise output of band gap references operating at the same current, very low and ultralinear …