REF5050A-Q1_15 Datasheet, PDF (1/25 Pages) Texas Instruments – REF50xxA-Q1 Low-Noise, Very Low Drift, Precision Voltage Reference

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
REF5020A-Q1, REF5025A-Q1, REF5030A-Q1
REF5040A-Q1, REF5045A-Q1, REF5050A-Q1
SBOS456H – SEPTEMBER 2008 – REVISED FEBRUARY 2015
REF50xxA-Q1 Low-Noise, Very Low Drift, Precision Voltage Reference
1 Features
•1 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
2 Applications
• 16-Bit Data Acquisition Systems
• ATE Equipment
• Industrial Process Control
• Medical Instrumentation
• Optical Control Systems
• Precision Instrumentation
3 Description
The REF50xxA-Q1 family of devices is low-noise,
low-drift, very-high precision-voltage reference. These
reference devices 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 REF50xxA-Q1 family of
devices 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.
Device Information(1)
PART NUMBER
PACKAGE
OUTPUT VOLTAGE
REF5020A-Q1
2.048 V
REF5025A-Q1
2.5 V
REF5030A-Q1
REF5040A-Q1
SOIC (8)
3V
4.096 V
REF5045A-Q1
4.5 V
REF5050A-Q1
5V
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
Input
Signal
0 V to 4 V
5V
OPA365
R₁
50 
C₁
1.2 nF
5V
+IN
V_DD
ADS8326
±IN _{REF GND}
5V
C_BYPASS
1 µF
REF5040A-Q1
V_IN
V_OUT
GND
C₂
22 µF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.