REF5020| Datasheet

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REF5020, REF5025 REF5030, REF5040 REF5045, REF5050
www.ti.com ....................................................................................................................................................... SBOS410A JUNE 2007 REVISED AUGUST 2008

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
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FEATURES 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 standardand high-grade versions. They are offered in MSOP-8(3) 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

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: 3uVPP/V HIGH OUTPUT CURRENT: 10mA TEMPERATURE RANGE: 40 C to +125 C
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APPLICATIONS
16-BIT DATA ACQUISITION SYSTEMS ATE EQUIPMENT INDUSTRIAL PROCESS CONTROL MEDICAL INSTRUMENTATION OPTICAL CONTROL SYSTEMS PRECISION INSTRUMENTATION

+5V Input Signal 0V to 4V R1 50W OPA365 C1 1.2nF +IN ADS8326 -IN REF

+5V DNC(1) VDD VIN TEMP GND GND REF5040 +5V CBYPASS 1m F VIN VOUT C2 22mF NOTES: (1) DNC = Do not connect. (2) NC = No internal connection. (3) Contact a TI sales representative for information regarding MSOP-8 (DGK) package availability. 4 SO-8, MSOP-8(3) 5 1 2 REF50xx 3 6 VOUT TRIM/NR 8 7 DNC(1) NC(2)

GND

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Copyright 2007 2008, Texas Instruments Incorporated

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.