REF5020, REF5025
,
REF5030, REF5040
REF5045, REF5050
www.ti.com
SBOS410 – JUNE 2007
Low-Noise, Very Low Drift, Precision
VOLTAGE REFERENCE
FEATURES
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2
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DESCRIPTION
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: 3μVPP/V
HIGH OUTPUT CURRENT: ±10mA
TEMPERATURE RANGE: –40°C to +125°C
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 standardand 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.
APPLICATIONS
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16-BIT DATA ACQUISITION SYSTEMS
ATE EQUIPMENT
INDUSTRIAL PROCESS CONTROL
MEDICAL INSTRUMENTATION
OPTICAL CONTROL SYSTEMS
PRECISION INSTRUMENTATION
REF50xx Family
MODEL
REF5020
2.5V
REF5030
3.0V
REF5040
4.096V
REF5045
4.5V
REF5050
Input
Signal
0V to 4V
2.048V
REF5025
+5V
OUTPUT VOLTAGE
5.0V
+5V
R1
50W
8
DNC(1)
7
NC(2)
3
6
VOUT
4
5
TRIM
DNC(1)
C1
1.2nF
-IN
REF
VIN
CBYPASS
1m F
GND
REF50xx
GND
SO-8, MSOP-8(3)
REF5040
+5V
2
GND
ADS8326
VIN
TEMP
VDD
+IN
OPA365
1
VOUT
C2
22mF
NOTES: (1) DNC = Do not connect.
(2) NC = No internal connection.
(3) MSOP-8 package available Q3, 2007.
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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.
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.
Copyright © 2007, Texas Instruments Incorporated
