ISL28272

Features:

`120A typical supply current for both channel
`30pA max input bias current
`100dB CMRR, PSRR
`0.7V/ offset voltage temperature coefficie
`180kHz 3dB Bandwidth - ISL28271
`100kHz 3dB Bandwidth - ISL28272
`0.5V/s slew rat
`Single supply operation
`Rail-to-rail input and output (RRIO)
`Input is capable of swinging above V+ and below V- (ground sensing)
`0.081%1 typical gain error - ISL28271
`-0.19%1 typical gain error - ISL28272
`Pb-free plus anneal available (RoHS compliant)




Application

·Battery- or solar-powered systems
·Strain gauge
·Sensor signal conditioning
·Medical devices
·Industrial instrumentations




Pinout






Specifications

Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . 1V/s
Input Current (IN, FB) ISL28272 . . . . . . . . . . . .. . . . . . . . . . . 5mA
Differential Input Voltage (IN, FB) ISL28272 . . . . . . . . . . . . . 0.5V
Input Current (IN, FB) ISL28271 . . . . . . . . . . . . . . . . . . . . . . 5mA
Differential Input (IN, FB) Voltage ISL28271 . . . . .. . . . . . . . . 1.0V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . V-- 0.5V to V+ + 0.5V
ESD tolerance, Human Body Model . . . . . . . . . . . . . . . . . . . . . .3kV
ESD tolerance, Machine Model. . . . . . . . . . . . . . . . . . . . . . . . .300V




Description

The ISL28271 and ISL28272 are dual micropower instrumentation amplifiers (in-amps) optimized for single supply operation over the +2.4V to +5.5V range. Both devices feature an Input Range Enhancement Circuit (IREC) which maintains CMRR performance for input voltages equal to the positive and negative supply rails. The input signal is capable of swinging 10% above the positive supply rail and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The ISL28271 is compensated for a minimum gain of 10 or more. For higher gain applications, the ISL28272 is compensated for a minimum gain of 100. The in-amps have CMOS input devices for maximum input common voltage range. The amplifiers can be operated from one lithium cell or two Ni-Cd batteries.