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.