ADR391 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown

The ADR391/ADR392/ADR395 are precision 2.5 V, 4.096 V, and 5 V band gap voltage references, respectively, featuring low power and high precision in a tiny footprint. Using patented temperature drift curvature correction techniques from Analog Devices, Inc., the ADR39x references achieve a low 9 ppm/°C of temperature drift in the TSOT package.

The ADR39x family of micropower, low dropout voltage references provides a stable output voltage from a minimum supply of 300 mV above the output. Their advanced design eliminates the need for external capacitors, which further reduces board space and system cost. The combination of low power operation, small size, and ease of use makes the ADR39x precision voltage references ideally suited for battery-operated applications.

Applications
  • Battery-powered instrumentation
  • Portable medical instrumentation
  • Data acquisition systems
  • Industrial process controls
  • Automotive
Features and Benefits
  • Compact 5-Lead TSOT Package
  • Low Temperature Coefficient: 
    B-Grade: 9 ppm/°C 
    A-Grade: 25 ppm/°C
  • Initial accuracy:  
    B grade: ±4 mV maximum (ADR391) 
    A grade: ±6 mV maximum
  • Ultralow output noise: 5 μV p-p
    (0.1 Hz to 10 Hz)
  • Low Dropout Performance: 300 mV
  • Low supply current: 3 µA Maximum in Shutdown 140 µA Maximum in Operation
  • No external capacitor required
  • Output Current Capability: 5 mA
  • Automotive grade available
  • Wide Temperature Range: -40°C to +125°C
Linear Products
Reference Designs
Data Sheets
Documentnote
ADR391/ADR392/ADR395: Micropower, Low Noise Precision Voltage References with Shutdown Data Sheet (Rev. H)PDF 425 kB
Application Notes
Documentnote
AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0)PDF 237 kB
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADR391AUJZ-R2 Production5 ld TSOTREEL 250-40 to 125C1.161.16Y
ADR391AUJZ-REEL7 Production5 ld TSOTREEL 3000-40 to 125C00.88Y
ADR391BUJZ-R2 Production5 ld TSOTREEL 250-40 to 125C2.162.16Y
ADR391BUJZ-REEL7 Production5 ld TSOTREEL 3000-40 to 125C01.35Y
Reference Materials
ADR391/ADR392/ADR395: Micropower, Low Noise Precision Voltage References with Shutdown Data Sheet (Rev. H) adr391
CN0194 Design & Integration Files adr391
AN-713: The Effect of Long-Term Drift on Voltage References (Rev. 0) ad580
CN-0194:电流隔离、双通道、16位、同步采样、菊花链连接的数据采集系统 adr391