Micropower, Low Noise Precision Voltage
References with Shutdown
ADR391/ADR392/ADR395
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: 300 mV
Low supply current
3 μA maximum in shutdown
140 μA maximum in operation
No external capacitor required
Output current: 5 mA
Automotive grade available
Wide temperature range: −40°C to +125°C
PIN CONFIGURATION
SHDN 1
VIN 2
ADR391/
ADR392/
ADR395
5 GND
VOUT (SENSE) 3 (Not to Scale) 4 VOUT (FORCE)
00419-001
FEATURES
Figure 1. 5-Lead TSOT (UJ Suffix)
Table 1.
Model
ADR391B
ADR391A
ADR392B
ADR392A
ADR395B
ADR395A
Output
Voltage (VO)
2.5
2.5
4.096
4.096
5.0
5.0
Temperature
Coefficient (ppm/°C)
9
25
9
25
9
25
Accuracy
(mV)
±4
±6
±5
±6
±5
±6
APPLICATIONS
Battery-powered instrumentation
Portable medical instrumentation
Data acquisition systems
Industrial process controls
Automotive
GENERAL DESCRIPTION
The ADR391/ADR392/ADR395 are precision 2.048 V, 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.
Rev. H
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