Datasheet AD8220-EP (Analog Devices)

JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package Enhanced Product AD8220-EP FEATURES PIN CONFIGURATION Low input currents AD8220-EP 25 pA maximum input bias current –IN 1 8 +VS 2 pA maximum input offset current RG 2 7 VOUT High CMRR RG 3 6 REF 92 dB CMRR (minimum) to 60 Hz, G = 10
001
+IN 4 5 –VS 72 dB CMRR (minimum) at 5 kHz, G = 1
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Excellent ac specifications and low power
Figure 1.
1.5 MHz bandwidth (G = 1) 14 nV/√Hz input noise (1 kHz) 10000 A) p Slew rate: 2 V/µs ( NT 1 mA maximum quiescent supply current 1000 Versatile CURRE MSOP package T E 100 S Rail-to-rail output F I F BIAS Input voltage range to below negative supply rail 10 7 kV ESD HBM protection AND O NT I 4.5 V to 36 V single supply OS 1 ±2.25 V to ±18 V dual supply CURRE Gain set with single resistor (G = 1 to 1000) AS 0.1 BI ENHANCED PRODUCT FEATURES UT 0.01 Supports defense and aerospace applications (AQEC standard) INP –75 –25 25 75 125
002
Extended industrial temperature range: −55°C to +125°C TEMPERATURE (°C)
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Controlled manufacturing baseline
Figure 2. Input Bias Current and Offset Current vs. Temperature
1 assembly/test site 1 fabrication site Product change notification Qualification data available on request
can operate on a ±18 V dual supply, as well as on a single 5 V supply. Its rail-to-rail output stage maximizes dynamic range on
APPLICATIONS
the low voltage supplies common in portable applications. Its
Medical instrumentation
ability to run on a single 5 V supply eliminates the need to use
Precision data acquisition
higher voltage, dual supplies. The AD8220-EP draws a maximum
Transducer interfaces
of 750 µA of quiescent current at 25°C, making it ideal for battery
GENERAL DESCRIPTION
powered devices. The AD8220-EP is the first single-supply, JFET input instrumenta- Gain is set from 1 to 1000 with a single resistor. Increasing the tion amplifier available in an MSOP package. Designed to meet gain increases the common-mode rejection. Measurements that the needs of high performance, portable instrumentation, the need higher CMRR when reading small signals benefit when AD8220-EP has a minimum common-mode rejection ratio the AD8220-EP is set for large gains. (CMRR) of 77 dB at dc and a minimum CMRR of 72 dB at 5 kHz A reference pin al ows the user to offset the output voltage. This for G = 1. Maximum input bias current at 25°C is 25 pA and feature is useful when interfacing with analog-to-digital converters. remains below 100 nA over the entire extended industrial The AD8220-EP is available in an MSOP that takes roughly half temperature range. Despite the JFET inputs, the AD8220-EP the board area of an SOIC. Performance is specified over the typical y has a noise corner of only 10 Hz. extended industrial temperature range of −55°C to +125°C. With the proliferation of mixed-signal processing, the number Additional application and technical information can be found of power supplies required in each system has grown. The in the AD8220 data sheet. AD8220-EP is designed to al eviate this problem. The AD8220-EP
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Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE