REF5020_1 Datasheet, PDF (1/18 Pages) Burr-Brown (TI) – Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE

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REF5020, REF5025
REF5030, REF5040
REF5045, REF5050
SBOS410 – JUNE 2007
Low-Noise, Very Low Drift, Precision
VOLTAGE REFERENCE
FEATURES
1
•2 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
APPLICATIONS
• 16-BIT DATA ACQUISITION SYSTEMS
• ATE EQUIPMENT
• INDUSTRIAL PROCESS CONTROL
• MEDICAL INSTRUMENTATION
• OPTICAL CONTROL SYSTEMS
• PRECISION INSTRUMENTATION
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
Input
Signal
0V to 4V
+5V
OPA365
R₁
50W
C₁
1.2nF
+5V
+IN
V_DD
ADS8326
-IN
REF GND
+5V
C_BYPASS
1mF
REF5040
V_IN V_OUT
GND
C₂
22mF
DNC⁽¹⁾ 1
V_IN 2
TEMP 3
GND 4
REF50xx
8 DNC⁽¹⁾
7 NC⁽²⁾
6 V_OUT
5 TRIM
SO-8, MSOP-8⁽³⁾
NOTES: (1) DNC = Do not connect.
(2) NC = No internal connection.
(3) MSOP-8 package available Q3, 2007.
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.
All trademarks are the property of their respective owners.
2
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