REF5020-EP Datasheet, PDF (1/29 Pages) Texas Instruments – LOW-NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE

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REF5020-EP, REF5025-EP, REF5040-EP, REF5050-EP
SBOS471B – APRIL 2010 – REVISED JUNE 2015
REF50xx-EP Low-Noise, Very Low Drift, Precision Voltage Reference
1 Features
•1 Low Temperature Drift:
5 ppm/°C (Maximum)
• High Accuracy:
0.08% (Maximum)
• Low Noise: 3 μV_PP/V
• High Output Current: ±10 mA
• Available in Military (–55°C to 125°C)
Temperature Range ⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
2 Applications
• 16-Bit Data Acquisition Systems
• ATE Equipment
• Industrial Process Control
• Medical Instrumentation
• Optical Control Systems
• Precision Instrumentation
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
(1) Custom temperature ranges available
3 Description
The REF50xx is a family of low-noise, very 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 and high accuracy 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.
They are offered in SOIC-8 packages, and are
specified from –55°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
REF50xx-EP
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Input
Signal
0 V to 4 V
Simplified Schematic
+5 V
+5 V
OPA365
R₁
50 Ω
C₁
1.2 nF
+IN
V_DD
ADS8326
- IN
REF GND
+5 V
C_BYPASS
1 µF
REF5040
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.