The MAX9636/MAX9637/MAX9638 are single-supply, CMOS input op amps featuring wide bandwidth at low quiescent current, making them suitable for a broad range of battery-powered applications such as portable medical instruments, portable media players, and smoke detectors.
The MAX9636/7/8 are single‑supply CMOS input op‑amps designed for battery‑powered applications such as portable medical instruments, media players, and smoke detectors. They feature ultra‑low input bias current, low input voltage‑noise density, and a wide bandwidth, making them suitable for high‑impedance sources like photodiodes and piezoelectric sensors.
Key specifications include a typical quiescent current of 36 µA, a gain‑bandwidth product of 1.5 MHz, and supply voltage operation from 2.1 V to 5.5 V. The devices are offered in three compact packages: 6‑Pin SC70, 8‑Pin SC70, and 10‑Pin UTQFN, and support a shutdown mode with a 1 pA supply current.
| Input Voltage Noise Density | 38 nV/√Hz (1 kHz) |
|---|---|
| Input Current Noise Density | 0.9 fA/√Hz (1 kHz) |
| Quiescent Current | 36 µA per amplifier (25 °C) |
| Gain Bandwidth Product | 1.5 MHz |
| Supply Voltage Range | 2.1 V to 5.5 V |
The typical quiescent current is 36 µA per amplifier at 25 °C.
The input voltage noise density is 38 nV/√Hz at 1 kHz.