The ISL28278 and ISL28478 are dual and quad channel micropower operational amplifiers optimized for single supply operation over the 2.4V to 5.5V range. They can be operated from one lithium cell or two Ni-Cd batteries.
These devices feature an Input Range Enhancement Circuit (IREC) that enables them to maintain CMRR performance for input voltages 10% above the positive supply rail and to 100mV below the negative supply. The output operation is rail-to-rail.
The ISL28278 and ISL28478 draw minimal supply current while meeting excellent
DC-accuracy, AC-performance, noise, and output drive specifications. The ISL28278 contains a power-down enable pin that reduces the power supply current typically to 4µA in the disabled state.
Key Features
- Low-power 120µA Typical Supply Current (ISL28278)
- 225µV Max Offset Voltage
- 30pA Max Input Bias Current
- 250kHz Typical Gain-bandwidth Product
- 105dB Typical PSRR
- 100dB Typical CMRR
- Single Supply Operation Down to 2.4V
- Input Capable of Swinging Above V+ and Below V- (Ground Sensing)
- Rail-to-rail Input and Output (RRIO)
- Enable Pin (ISL28278 Only)
- Pb-free (RoHS-compliant)
Applications
- Battery- or Solar-powered Systems
- 4mA to 25mA Current Loops
- Handheld Consumer Products
- Medical Devices
- Thermocouple Amplifiers
- Photodiode Pre-amps
- pH Probe Amplifiers
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
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| ISL28478FAZ | 16 Ld QSOP | 0.08 | 16 | 3 | 260 | RoHS |
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| ISL28478FAZ-T7 | 16 Ld QSOP T+R | 0.08 | 16 | 3 | 260 | RoHS |
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| ISL28478EVAL1Z | | | | N/A | | RoHS |
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