REF5020, REF5025
REF5030, REF5040
www.ti.com
REF5045, REF5050
SBOS410–JUNE 2007
Low-Noise, Very Low Drift, Precision
VOLTAGE REFERENCE
1
FEATURES
DESCRIPTION
2
•
LOW TEMPERATURE DRIFT:
–
–
High-Grade: 3ppm/°C (max)
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.
Standard-Grade: 8ppm/°C (max)
•
HIGH ACCURACY:
–
–
High-Grade: 0.05% (max)
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.
Standard-Grade: 0.1% (max)
•
•
•
LOW NOISE: 3μVPP/V
HIGH OUTPUT CURRENT: ±10mA
TEMPERATURE RANGE: –40°C to +125°C
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.
APPLICATIONS
•
•
•
•
•
•
16-BIT DATA ACQUISITION SYSTEMS
ATE EQUIPMENT
INDUSTRIAL PROCESS CONTROL
MEDICAL INSTRUMENTATION
OPTICAL CONTROL SYSTEMS
PRECISION INSTRUMENTATION
REF50xx Family
MODEL
REF5020
REF5025
REF5030
REF5040
REF5045
REF5050
OUTPUT VOLTAGE
2.048V
2.5V
3.0V
4.096V
4.5V
5.0V
+5V
+5V
Input
Signal
0V to 4V
R1
50W
DNC(1)
NC(2)
DNC(1)
1
2
3
4
8
7
6
5
VDD
OPA365
+IN
VIN
TEMP
GND
ADS8326
REF50xx
C1
1.2nF
VOUT
-IN
REF
GND
TRIM
SO-8, MSOP-8(3)
REF5040
VIN
VOUT
+5V
CBYPASS
NOTES:(1) DNC = Do not connect.
(2) NC = No internal connection.
(3) MSOP-8 package available Q3, 2007.
C2
1mF
22mF
GND
1
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.
2
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