1 Features

• 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)

• Ultra-low zero load dropout voltage: 100 mV

(maximum)

• Wide input voltage: 12 V

• Output 1/f noise (0.1 Hz to 10 Hz): 3.8 μVp-p/V

• Excellent long-term stability 25 ppm/1000 hrs

• Multiple small footprint 6 pin SOT-23 package

pinouts: REF34xx and REF34xxT

2 Applications

• Data acquisition systems

• Analog I/O modules

• Field transmitters

• Lab & field instrumentation

• Servo drive control modules

• DC power supply, AC source, electronic load

3 Description

The REF34xx 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 of

3.8 μVp-p /V, which enables its ability to maintain high

signal integrity with high-resolution data converters in

noise critical systems. With a small SOT-23 package,

REF34xx offers enhanced specifications and pin-topin

replacement for MAX607x, ADR34xx and LT1790

(REF34xxT, no EN pin). The REF34xx family is

compatible to most of the ADC and DAC such as

ADS1287, DAC8802 and ADS1112.

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) benefit portable and battery-powered

applications.

REF34xx is specified for the wide temperature range

of −40°C to +125°C.