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SBOS410C – JUNE 2007 – REVISED DECEMBER 2008
Low-Noise, Very Low Drift, Precision
VOLTAGE REFERENCE
1
FEATURES
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
(3)
and SO-8 packages, and are specified
from –40°C to +125°C.
REF50xx Family
MODEL
REF5020
REF5025
REF5030
REF5040
REF5045
REF5050
REF5010
OUTPUT VOLTAGE
2.048V
2.5V
3.0V
4.096V
4.5V
5.0V
10.0V
•
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
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) Contact a TI sales representative for information
regarding MSOP-8 (DGK) package availability.
4
SO-8, MSOP-8
(3)
5
1
2
REF50xx
3
6
V
OUT
TRIM/NR
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 © 2007–2008, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TI [ TEXAS INSTRUMENTS ]
