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SBOS410 – JUNE 2007
Low-Noise, Very Low Drift, Precision
VOLTAGE REFERENCE
1
FEATURES
•
LOW TEMPERATURE DRIFT:
– High-Grade: 3ppm/°C (max)
– Standard-Grade: 8ppm/°C (max)
HIGH ACCURACY:
– High-Grade: 0.05% (max)
– Standard-Grade: 0.1% (max)
LOW NOISE: 3μV
PP
/V
HIGH OUTPUT CURRENT: ±10mA
TEMPERATURE RANGE: –40°C to +125°C
2
DESCRIPTION
The REF50xx is a family of low-noise, low-drift, very
high precision voltage references. These references
are capable of both sinking and sourcing, and are
very robust with regard to line and load changes.
Excellent temperature drift (3ppm/°C) and high
accuracy (0.05%) are achieved using proprietary
design techniques. These features, combined with
very-low noise make the REF50xx family ideal for use
in high-precision data acquisition systems.
Each reference voltage is available in both standard-
and high-grade versions. They are offered in MSOP-8
(available Q3, 2007) and SO-8 packages, and are
specified from –40°C to +125°C.
REF50xx Family
MODEL
REF5020
REF5025
REF5030
REF5040
REF5045
REF5050
OUTPUT VOLTAGE
2.048V
2.5V
3.0V
4.096V
4.5V
5.0V
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APPLICATIONS
16-BIT DATA ACQUISITION SYSTEMS
ATE EQUIPMENT
INDUSTRIAL PROCESS CONTROL
MEDICAL INSTRUMENTATION
OPTICAL CONTROL SYSTEMS
PRECISION INSTRUMENTATION
+5V
Input
Signal
0V to 4V
R
1
50W
OPA365
C
1
1.2nF
+IN
ADS8326
-IN
REF
+5V
DNC
(1)
V
DD
V
IN
TEMP
GND
GND
REF5040
+5V
C
BYPASS
1
m
F
GND
V
IN
V
OUT
C
2
22
m
F
NOTES: (1) DNC = Do not connect.
(2) NC = No internal connection.
(3) MSOP-8 package available Q3, 2007.
4
SO-8, MSOP-8
(3)
5
1
2
REF50xx
3
6
V
OUT
TRIM
8
7
DNC
(1)
NC
(2)
1
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
Copyright © 2007, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
BURR-BROWN [ BURR-BROWN CORPORATION ]
