Micropower, Low Noise Precision Voltage

References with Shutdown

ADR391/ADR392/ADR395

Rev. H

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FEATURES

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

APPLICATIONS

Battery-powered instrumentation

Portable medical instrumentation

Data acquisition systems

Industrial process controls

Automotive

PIN CONFIGURATION

1

2

3

5

4

GND

SHDN

ADR391/

ADR392/

ADR395

(Not to Scale)

Figure 1. 5-Lead TSOT (UJ Suffix)

Table 1.

Model

Output

Temperature

Coefficient (ppm/°C)

Accuracy

(mV)

ADR391B

2.5

9

±4

ADR391A

2.5

25

±6

ADR392B

4.096

9

±5

ADR392A

4.096

25

±6

ADR395B

5.0

9

±5

ADR395A

5.0

25

±6

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.