REF2125 Datasheet, PDF (1/24 Pages) Texas Instruments – REF2125 Low-Drift, Low-Power, Small-Footprint, Series Voltage Reference With Clean Start

Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
REF2125
SBAS798 – SEPTEMBER 2017
REF2125 Low-Drift, Low-Power, Small-Footprint, Series Voltage Reference
With Clean Start
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
• 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.
PART NAME
REF2125
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
10
Input Signal
Simplified Schematic
10
-
124
+
1 nF
VIN
ADS1287
REF
CIN
REF21xx
1µF
COUT
10 µF
Copyright © 2017, Texas Instruments Incorporated
1
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.