Data Sheet

ADR3625/ADR3630/ADR3650

Precision, Micropower, High Current Output Voltage References

Rev. A

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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 and 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

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0.25 V for the ADR3625

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0.15 V for the ADR3630 and ADR3650

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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\ADR3630\ADR3650 are low power, high precision

voltage references that feature 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\ADR3630\ADR3650 are 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 3500 Hr) improve system lifetime accuracy. A

minimum load capacitance of 0.1 μF is required for operation.

The ADR3625\ADR3630\ADR3650 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