Precision, Dual-Channel Instrumentation Amplifier Known Good Die AD8222-KGD FEATURES FUNCTIONAL BLOCK DIAGRAM Dual-channel AD8 2 2 2 - KG D Gain set with 1 resistor per amplifier (G = 1 to 10,000) Low noise 8 nV/Hz e at 1 kHz NI 0.25 V p-p RTI, G = 100 to 1000 (0.1 Hz to 10 Hz) I N1 I N2 High accuracy dc performance RG 1 RG 2 120 V maximum input offset voltage RG 1 RG 2 0.4 V/C maximum average temperature coefficient +I N1 +I N2 2.0 nA maximum input bias current 100 dB minimum CMRR at 4 kHz (G = 100 and G = 1000) Excellent ac performance 140 kHz small signal 3 dB bandwidth (G = 100) Figure 1. 13 s settling time to 0.001% Differential output option (single channel) The AD8222-KGD can also be configured as a single-channel, Fully specified differential output in-amp. Differential outputs provide high Adjustable common-mode output noise immunity, which can be useful when the output signal must Power supply operating range: 2.3 V to 18 V travel through a noisy environment, such as with remote 1 Operational up to 125C sensors. The configuration can also drive differential input Known Good Die (KGD): these die are fully guaranteed to analog-to-digital converters (ADCs). data sheet specifications The AD8222-KGD maintains a minimum CMRR of 80 dB to APPLICATIONS 4 kHz for all grades at G = 1. High CMRR over frequency Multichannel data acquisition for allows the AD8222-KGD to reject wideband interference and Electrocardiogram (ECG) and medical instrumentation line harmonics, greatly simplifying filter requirements. The Industrial process controls AD8222-KGD also has a typical CMRR drift over temperature Wheatstone bridge sensors of just 0.07 V/V/C at G = 1. Differential drives for High resolution input ADCs The AD8222-KGD operates on both single and dual supplies. Remote sensors The device is specified over the industrial temperature range of 40C to +85C and is fully RoHS compliant. Furthermore, the GENERAL DESCRIPTION 1 AD8222-KGD is operational from 40C to +125C . The AD8222-KGD is a dual-channel, high performance For a single-channel version, see the AD8221-KGD. instrumentation amplifier (in-amp) that requires only one external resistor per amplifier to set gains of 1 to 10,000. Additional application and technical information can be found in the AD8222 data sheet. The AD8222-KGD is a dual, in-amp in a small 4 mm 4 mm LFCSP. The device requires the same board area as a typical 1 See the AD8222 data sheet for expected operation from 85C to 125C. single in-amp. The smaller package allows a 2 increase in channel density and a lower cost per channel, all with no compromise in performance. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20192020 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. +V +V S S REF 1 OUT 1 REF 2 OUT 2 V V S S 20319-0 01AD8222-KGD Known Good Die TABLE OF CONTENTS Features .............................................................................................. 1 Maximum Power Dissipation ......................................................6 Applications ....................................................................................... 1 ESD Caution...................................................................................6 General Description ......................................................................... 1 Pin Configuration and Function Descriptions ..............................7 Functional Block Diagram .............................................................. 1 Outline Dimensions ..........................................................................8 Revision History ............................................................................... 2 Die Specifications and Assembly Recommendations ..............8 Specifications ..................................................................................... 3 Ordering Guide .............................................................................8 Absolute Maximum Ratings ............................................................ 6 REVISION HISTORY 1/2020Rev. 0 to Rev. A Changes to Table 4 ............................................................................ 7 10/2019Revision 0: Initial Version Rev. A Page 2 of 8