REF2125 Low-Drift, Low-Power, Small-Footprint, Series Voltage Reference With Clean Start

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)
• Wide Input Voltage: 12 V
• Output 1/f Noise (0.1 Hz to 10 Hz): 5 µV_PP/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 of 5 μV_p-p /V, which enables its ability to maintain high 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.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

4 Revision History

5 Pin Configuration and Functions

DBV Package

5-Pin SOT-23

Top View