ISL28138 and ISL28238 are 4.5MHz low-power single and dual operational amplifiers. The parts are optimized for single supply operation from 2.4V to 5.5V, allowing operation from one lithium cell or two Ni-Cd batteries.
The ISL28138 and ISL28238 are 4.5 MHz, single‑ and dual‑channel rail‑to‑rail input‑output operational amplifiers optimized for low‑power operation from 2.4 V to 5.5 V. They feature an Input Range Enhancement Circuit that maintains CMRR for input voltages above the positive supply and provide rail‑to‑rail output swing.
The devices draw minimal supply current, include an enable pin for power‑down, and are specified for operation from –40 °C to +125 °C. Typical applications include low‑end audio, current‑loop sensors, medical devices, and sensor amplifiers.
| Gain Bandwidth Product | 4.5 MHz |
|---|---|
| Supply Current (per amplifier) | 900 A |
| Maximum Offset Voltage | 300 µV |
| Typical Input Bias Current | 1 pA |
| Supply Voltage Range | 2.4 V to 5.5 V |
| Input/Output Type | Rail‑to‑rail |
| Output Source/Sink Current | 60 mA load current |
| Operating Temperature Range | -40 °C to +125 °C |
The enable pin can turn the device off and reduce the supply current to less than 20 µA.
They are specified to operate from –40 °C to +125 °C.
The parts are optimized for single‑supply operation from 2.4 V to 5.5 V.
Low‑end audio, 4 mA‑20 mA current loops, medical devices, and sensor amplifiers.