Product Details
●The AD8220 is the first single-supply, JFET input instrumentation amplifier available in an MSOP package. Designed to meet the needs of high performance, portable instrumentation, the AD8220 has a minimum common-mode rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR of 80 dB at 5 kHz for G = 1. Maximum input bias current is 10 pA and typically remains below 300 pA over the entire industrial temperature range. Despite the JFET inputs, the AD8220 typically has a noise corner of only 10 Hz.
●With the proliferation of mixed-signal processing, the number of power supplies required in each system has grown. The AD8220 is designed to alleviate this problem. The AD8220 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 the low voltage supplies common in portable applications. Its ability to run on a single 5 V supply eliminates the need to use higher voltage, dual supplies. The AD8220 draws a maximum of 750 μA of quiescent current, making it ideal for battery powered devices.
●Gain is set from 1 to 1000 with a single resistor. Increasing the gain increases the common-mode rejection. Measurements that need higher CMRR when reading small signals benefit when the AD8220 is set for large gains.
●A reference pin allows the user to offset the output voltage. This feature is useful when interfacing with analog-to-digital converters.
●The AD8220 is available in an MSOP that takes roughly half the board area of an SOIC. Performance for the A and B grade is specified over the industrial temperature range of −40°C to +85°C, and the W grade is specified over the automotive temperature range of −40°C to +125°C.
●Applications
● Medical instrumentation
● Precision data acquisition
● Transducer interfaces
●### Features and Benefits
● High CMRR
● 100 dB CMRR min, G = 10 (B grade)
● 80 dB CMRR min to 5 kHz, G = 1 (B Grade)
● Excellent ac specifications and low power
● 1.5 MHz bandwidth (G = 1)
● 14 nV/√Hz input noise (1 kHz)
● Slew rate: 2 V/μs
● 750 μA quiescent supply current max
●AD8220-EP supports defense and aerospace applications (AQEC standard)
● Download AD8220-EP data sheet (pdf)
● Military temperature range (−55°C to +125°C)
● Controlled manufacturing baseline
● One assembly/test site
● One fabrication site
● Enhanced product change notification
● Qualification data available on request
● V62/17607 DSCC Drawing Number
●Qualified for Automotive Applications
● Low input currents
● 10 pA max input bias current (B grade)
● 0.6 pA max input offset current (B grade)
● Versatile
● MSOP package
● Rail-to-rail output
● Input voltage range to below negative supply rail
● 4 kV ESD protection
● 4.5 V to 36 V single supply
● ±2.25 V to ±18 V dual supply
● Gain set with single resistor (G = 1 to 1000)
