REF5050AQDRQ1 Datasheet, PDF (1/21 Pages) Texas Instruments – LOW-NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE

REF5020-Q1, REF5025-Q1, REF5030-Q1
REF5040-Q1, REF5045-Q1, REF5050-Q1
www.ti.com
SBOS456G – SEPTEMBER 2008 – REVISED OCTOBER 2013
LOW-NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE
Check for Samples: REF5020-Q1, REF5025-Q1, REF5030-Q1, REF5040-Q1, REF5045-Q1, REF5050-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• Low Temperature Drift
– Standard Grade: 8 ppm/°C (max)
• High Accuracy
– Standard Grade: 0.1% (max)
• Low Noise: 3 μV_PP/V
• EXCELLENT LONG-TERM STABILITY:
– 5 ppm/1000 hr (typ) after 1000 hours
• High Output Current: ±10 mA
• Temperature Range: –40°C to 125°C
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 (3 ppm/°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 a standard-
grade versions. The devices are offered in 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
OUTPUT VOLTAGE
REF5020
2.048 V
REF5025
2.5 V
REF5030
3V
REF5040
4.096 V
REF5045
4.5 V
REF5050
5V
Input
Signal
0 V to 4 V
5V
OPA365
R₁
50 W
C₁
1.2 nF
5V
+IN
V_DD
ADS8326
-IN _{REF GND}
+5 V
C_BYPASS
1 mF
REF5040
V_IN V_OUT
GND
C₂
22 mF
SO-8 (D) PACKAGE
(TOP VIEW)
DNC 1
V_IN 2
TEMP 3
GND 4
8 DNC
7 NC
6 V_OUT
5 TRIM/NR
DNC = Do not connect
NC = No internal connection
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 © 2008–2013, Texas Instruments Incorporated