REF54 0.8ppm/°C Maximum Drift, 0.11ppmp-p 1/f Noise, 380μA Current, Precision

Voltage Reference

1 Features

• Low temperature drift coefficient:

– 0.8ppm/°C maximum (C grade, 0°C to 70°C)

– 1.5ppm/°C maximum (Q grade, –40°C to

125°C)

• Low noise (0.1Hz to 10Hz):

– 0.11ppmp-p with CNR = 100μF

– 0.45ppmp-p with CNR = Open

• High accuracy: ±0.02% maximum

• Low quiescent current: 380μA maximum

• Low long-term stability (1khr): 25ppm, SOIC

• Low long-term stability (1khr): 3ppm, Ceramic

• Designed for a wide range of applications:

– Wide input voltage up to 18V

– Output current: ±10mA

– Voltage options: 2.5V, 3V, 4.096V, 4.5V, 5V

• Fit for all design requirement:

– Stable with 1μF to 100μF output low-ESR

capacitor

– High PSRR: 100dB at 1kHz

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

– Pin-to-pin to REF50xx family when TEMP pin is

not used

2 Applications

• Semiconductor test equipment

• Precision data acquisition systems

• Precision weight scales

• Ultrasound scanner

• X-ray systems

• Industrial instrumentation

• PLC analog I/O modules

• Field transmitters

• Power monitoring

• Battery management system

3 Description

The REF54 is a family of high precision, low-drift,

low current consumption series voltage reference

devices. The REF54 family offers low temperature

drift coefficient (0.8ppm/°C), low-noise (0.11ppmp-p)

and high accuracy (±0.02%) while consuming 380μA

current. The REF54 with low long-term drift (3ppm

LCCC; 25ppm SOIC), excellent load and line

regulation helps meet strict performance requirements

of high precision applications. The device family is

designed as a companion device for high-resolution

data converters such as ADS8900B, ADS127L11,

ADS1285, and DAC11001B.

The REF54 family supports wide supply voltage rating

of 18V. The REF54 device supports up to 10mA load

current.

The REF54 is specified for the two temperature

ranges, C grade is specified for from 0°C to 70°C

and Q grade is specified for from –40°C to +125°C.

The wide temperature range enables operation across

various industrial applications.

Package Information

PART NAME

PACKAGE (1)

PACKAGE SIZE(2)

REF54

D (SOIC, 8)

4.9mm × 6mm

VSSOP, 8 (3)

3mm × 4.9mm

LCCC, 8

5.00mm × 5.00mm

(1)

For all available packages, see the orderable addendum at

the end of the datasheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

(3)

Preview package.

VIN

EN

1μF

10μF

GND

GND

GND

GND

GND

NR

VREF

Optional

Input

Output

REF54

Basic Connection Diagram

Basic Connection Diagram

Te mperature (

C)

0

10

20

30

40

50

60

70

-100

-60

-20

20

60

100

Output Voltage versus Free-Air-Temperature

REF54

SNVSCN7D – NOVEMBER 2023 – REVISED JUNE 2026

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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.