10

10

Input Signal

124

1 nF

ADS1287

VIN

REF

CIN

1µF

COUT

10 µF

-

+

REF21xx

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Reference

Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

REF2125

SBAS798 – SEPTEMBER 2017

REF2125 Low-Drift, Low-Power, Small-Footprint, Series Voltage Reference

With Clean Start

1

1 Features

1

•

Initial Accuracy: ±0.05% (maximum)

•

Temperature Coefficient : 6 ppm/°C (maximum)

•

Operating Temperature Range:

−40°C to +125°C

•

Output Current: ±10 mA

•

Low Quiescent Current: 95 μA (maximum)

•

Wide Input Voltage: 12 V

•

•

Excellent Long-Term Stability 30 ppm/1000 hrs

•

Small Footprint 5-Pin SOT-23 Package

2 Applications

•

Precision Data Acquisition Systems

•

Power Monitoring

•

PLC Analog I/O Modules

•

Industrial Instrumentation

•

Field Transmitters

•

Test Equipment

•

4 - 20mA Loop sensors

•

LCR Meters

3 Description

The REF2125 device is a low temperature drift

(6 ppm/°C), low-power, high-precision CMOS voltage

reference, featuring ±0.05% initial accuracy, low

operating current with power consumption less than

95 μA. This device also offers very low output noise

signal integrity with high-resolution data converters

and noise critical systems.

Stability and system reliability are further improved by

the low output-voltage hysteresis of the device and

low long-term output voltage drift. Furthermore, the

small size and low operating current of the devices

(95 μA) make them ideal for portable and battery-

powered applications.

REF2125 is specified for the wide temperature range

of

−40°C

to

+125°C.

Contact

the

TI

sales

representative for additional voltage options.

Device Information(1)

PART NAME

PACKAGE

BODY SIZE (NOM)

REF2125

SOT-23 (5)

2.90 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Simplified Schematic