Data Sheet

ADR3625

Precision, Micropower, High Current Output Voltage Reference

Rev. 0

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FEATURES

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Maximum temperature coefficient

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3 ppm/°C (B grade)

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6 ppm/°C (A grade)

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Output current capacity (typical): 70 mA sourcing/20 mA sinking

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Low quiescent current: 65 µA

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Low shutdown current: 1.5 μA

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Output voltage noise (0.1 Hz to 10 Hz): 3 ppm p-p

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Maximum initial output voltage error

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±0.04% (B grade)

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±0.08% (A grade)

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Operating temperature range: −40°C to +125°C

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Maximum input voltage: 16 V

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Low dropout voltage: 0.25 V

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1.8 V logic compatible

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8-Lead MSOP package

APPLICATIONS

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Precision power supplies

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Portable instrumentation

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Process transmitters

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Remote sensors

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Medical instrumentation

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Auto battery monitors

PIN CONFIGURATION

Figure 1. 8-Lead MSOP Pin Configuration

GENERAL DESCRIPTION

The ADR3625 is a low power, high precision voltage reference that

features a maximum temperature coefficient of 3 ppm/°C for the B

grade in an 8-lead MSOP. Capable of sourcing up to

70 mA, the ADR3625 is an exceptional replacement to standard

low dropout (LDO) regulators. For high accuracy, the output voltage

and temperature coefficient are trimmed during production using the

Analog Devices, Inc., proprietary DigiTrim

® technology.

The low thermal hysteresis (–7 ppm) and low long-term drift

(160 ppm at 4500 Hr) improve system lifetime accuracy. A minimum

load capacitance of 0.1 μF is required for operation. The ADR3625

is specified over the –40°C to +125°C operating temperature range.

Table 1. Voltage Reference Choices from Analog Devices

Micropower

Low Power

High Current

LT6656

ADR391

LT6658

ADR291

LT1460

LT1461

REF192

ADR361

ADR431

LT1461

ADR421

REF192

LT1790

LTC6652

LT1460