Datasheet AD8221-KGD (Analog Devices)

Precision Instrumentation Amplifier Known Good Die AD8221-KGD FEATURES CONNECTION DIAGRAM Easy to use AD8221-KGD Gain set with 1 external resistor (gain range 1 to 1000) –IN +VS Wide power supply operating range: ±2.3 V to ±18 V RG VOUT Temperature range for specified performance: −40°C to +85°C RG REF Operational up to 125°C1
001
+IN –VS Excellent ac specifications
20258-
80 dB minimum CMRR to 10 kHz (gain = 1)
Figure 1.
825 kHz typical, small signal –3 dB bandwidth (gain = 1) 2 V/µs typical slew rate (gain = 1) Low noise 8 nV/√Hz maximum input voltage noise at 1 kHz 0.25 µV p-p typical RTI noise (gain = 100 to 1000) High accuracy dc performance 80 dB minimum CMRR dc to 60 Hz with 1 kΩ source impedance (gain = 1) 70 µV maximum input offset voltage 0.9 µV/°C maximum input offset voltage, average temperature coefficient 1.5 nA maximum input bias current Known Good Die (KGD): these die are fully guaranteed to data sheet specifications. APPLICATIONS Weigh scales Industrial process controls Bridge amplifiers Precision data acquisition systems Medical instrumentation Strain gages Transducer interfaces GENERAL DESCRIPTION
The AD8221-KGD is a gain programmable, high performance Programmable gain affords the user design flexibility. A single instrumentation amplifier (in-amp) that delivers high CMRR resistor sets the gain from 1 to 1000. The AD8221-KGD over frequency. High CMRR over frequency al ows the AD8221- operates on both single and dual supplies and is well suited for KGD to reject wideband interference and line harmonics, applications where ±10 V input voltages are encountered. greatly simplifying filter requirements. The AD8221-KGD The AD8221-KGD is available in an 8-pad bare die, making it maintains a minimum common-mode rejection ratio (CMRR) ideal for multichannel or space-constrained applications. of 80 dB to 10 kHz at a gain = 1. Possible applications include Performance is specified over the −40°C to +85°C industrial precision data acquisition, biomedical analysis, and aerospace temperature range. Furthermore, the AD8221-KGD is instrumentation. operational from −40°C to +125°C1. Low voltage offset, low offset drift, low gain drift, high gain Additional application and technical information can be found accuracy, and high CMRR make this device an excel ent choice in the AD8221 data sheet. in applications that demand the best dc performance possible, such as bridge signal conditioning. 1 See the AD8221 data sheet for expected operation from 85°C to 125°C.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS DIE SPECIFICATIONS AND ASSEMBLY RECOMMENDATIONS ORDERING GUIDE