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REF4132
SNAS794A –JUNE 2020–REVISED JUNE 2020
REF4132 Low-Drift, Low-Power, Small-Footprint Series Voltage Reference
1 Features
3 Description
The REF4132 device is a low temperature drift
(12 ppm/°C), low-power, high-precision CMOS
voltage reference, featuring ±0.05% initial accuracy,
low operating current with power consumption less
than 100μA. This device also offers very low output
noise of 15 μVp-p/V, which enables its ability to
maintain high signal integrity with high-resolution data
converters in noise critical systems. Packaged in the
same SOT-23-5 package, REF4132 offers enhanced
specifications and pin-to-pin replacement for LM4128
and LM4132.
1
•
Voltage options: 2.5V, 3V, 3.3V, 4.096V, 5V
Initial accuracy: ±0.05% (maximum)
Low temperature coefficient :
•
•
–
–
A grade: 12 ppm/°C (maximum)
B grade: 30 ppm/°C (maximum)
•
•
•
•
•
•
Operating temperature range: −40°C to +125°C
Output current: ±10 mA
Low quiescent current: 100 μA (maximum)
Output 1/f noise (0.1 Hz to 10 Hz): 15 µVPP/V
Excellent long-term stability 30 ppm/1000 hrs
Small footprint 5-pin SOT-23 package
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
(100 μA) can benefit portable and battery-powered
applications.
2 Applications
•
•
•
•
•
•
Data acquisition (DAQ)
PLC analog I/O modules
Field transmitters
REF4132 is specified for the wide temperature range
of −40°C to +125°C.
Motor drive control module
Battery test equipment
LCR meters
Device Information(1)
PART NAME
REF4132
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 data sheet.
Simplified Schematic
Dropout vs. Current Load Over Temperature
+5 V
0.4
0.36
+125°C
0.32
EN
VIN
0.28
VREF
+25°C
-40°C
REF4132
GND
+2.5 V
0.24
R1
0.2
0.16
0.12
0.08
0.04
0
10 kΩ
R2
10 kΩ
+5 V
œ
0
5
Load Current (mA)
10
OPA735
+
-2.5 V
-5 V
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.