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REF5020A-Q1, REF5025A-Q1, REF5030A-Q1
REF5040A-Q1, REF5045A-Q1, REF5050A-Q1
SBOS456H –SEPTEMBER 2008–REVISED FEBRUARY 2015
REF50xxA-Q1 Low-Noise, Very Low Drift, Precision Voltage Reference
1 Features
3 Description
The REF50xxA-Q1 family of devices is low-noise,
low-drift, very-high precision-voltage reference. These
reference devices are capable of both sinking and
sourcing, and are very robust with regard to line and
load changes.
1
•
Qualified for Automotive Applications
Low Temperature Drift
•
•
–
Standard Grade: 8 ppm/°C (max)
High Accuracy
Standard Grade: 0.1% (max)
–
Excellent temperature drift (3 ppm/°C) and high
accuracy (0.05%) are achieved using proprietary
design techniques. These features combined with
very low noise make the REF50xxA-Q1 family of
devices ideal for use in high-precision data
acquisition systems.
•
•
Low Noise: 3 μVPP/V
Excellent Long-Term Stability:
–
5 ppm/1000 hr (typ) after 1000 hours
•
•
High Output Current: ±10 mA
Temperature Range: –40°C to 125°C
Each reference voltage is available in a standard-
grade versions. The devices are offered in SO-8
packages and are specified from –40°C to 125°C.
2 Applications
•
•
•
•
•
•
16-Bit Data Acquisition Systems
ATE Equipment
Device Information(1)
PART NUMBER
REF5020A-Q1
REF5025A-Q1
REF5030A-Q1
REF5040A-Q1
REF5045A-Q1
REF5050A-Q1
PACKAGE
OUTPUT VOLTAGE
Industrial Process Control
Medical Instrumentation
Optical Control Systems
Precision Instrumentation
2.048 V
2.5 V
3 V
SOIC (8)
4.096 V
4.5 V
5 V
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
5 V
5 V
Input
Signal
0 V to 4 V
R1
50 ꢀꢀ
VDD
+IN
OPA365
ADS8326
C1
1.2 nF
±IN
REF
GND
REF5040A-Q1
VOUT
VIN
5 V
CBYPASS
1 µF
C2
22 µF
GND
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.