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.

FEATURES

► Maximum temperature coefficient

► 3 ppm/°C (B grade)

► 6 ppm/°C (A grade)

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

► Low quiescent current: 65 μA

► Low shutdown current: 1.5 μA

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

► Maximum initial output voltage error

► ±0.04 (B grade)

► ±0.08 (A grade)

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

► Maximum input voltage: 16 V

► Low dropout voltage: 0.25 V

► 1.8 V logic compatible

► 8-Lead MSOP package

APPLICATIONS

► Precision power supplies

► Portable instrumentation

► Process transmitters

► Remote sensors

► Medical instrumentation

► Auto battery monitors

ADR421属于集成电路（IC） > 电压基准。亚德诺半导体技术有限公司制造生产的ADR421电压基准产品属于基准电压源系列，可通过相对较不稳定的电源提供稳定的电势，电压值始终保持恒定，以便在测量、控制和类似应用中用作比较的标准。其功能行为可能与用于大功率调节的线性稳压器相似，但基准电压源器件却不适合用于此类用途。用作比较标准时，若输出电流容量或实际负载电流增大，其性能通常会降低。