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.
Key Features
- 120µA typical supply current for both channels
- 30pA max input bias current
- 100dB CMRR, PSRR
- 0.7µV/°C offset voltage temperature coefficient
- 180kHz 3dB Bandwidth - ISL28271
- 100kHz 3dB Bandwidth - ISL28272
- 0.5V/µs slew rate
- 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 available (RoHS compliant)
Applications
- Battery- or solar-powered systems
- Strain gauge
- Sensor signal conditioning
- Medical devices
- Industrial instrumentations
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
|---|
|
| ISL28271FAZ | 16 Ld QSOP | 0.08 | 16 | 3 | 260 | RoHS |
|
|
| ISL28271FAZ-T7 | 16 Ld QSOP T+R | 0.08 | 16 | 3 | 260 | RoHS |
|
|
|
|
| ISL28271INEVAL1Z | | | | N/A | | RoHS |
|
|
