The MAX4063 is a differential-input microphone preamplifier optimized for high-performance, portable applications.
The MAX4063 is a differential‑input microphone preamplifier optimized for high‑performance portable applications. It offers selectable differential or single‑ended inputs, adjustable gain via a single external resistor, integrated low‑noise bias, and a low‑power shutdown mode that reduces supply current to 0.3 µA.
The device operates from 2.4 V to 5.5 V, is specified over –40 °C to +85 °C, and is available in 16‑pin thin QFN and 14‑pin TSSOP packages. Key performance figures include 95 dB PSRR, 79 dB CMRR, THD+N of 0.05 % at 1 kHz, and a full‑scale differential output of up to 6 V p‑p.
| Supply Voltage Range | 2.4 V – 5.5 V |
|---|---|
| Shutdown Supply Current | 0.3 µA |
| Typical Supply Current | 0.75 mA – 1.1 mA |
| Differential Output Full‑Scale | up to 6 V p‑p |
| Input Resistance | 100 kΩ (typ) |
| THD+N | 0.05 % at 1 kHz |
| Power‑Supply Rejection Ratio (PSRR) | 95 dB |
| Common‑Mode Rejection Ratio (CMRR) | 79 dB |
| Operating Temperature Range | –40 °C to +85 °C |
| Package Options | 16‑pin thin QFN (4 mm × 4 mm × 0.8 mm) and 14‑pin TSSOP |
In shutdown mode the MAX4063 draws only 0.3 µA of supply current.
The device operates from 2.4 V up to 5.5 V.
It is offered in a 16‑pin thin QFN (4 mm × 4 mm × 0.8 mm) and a 14‑pin TSSOP package.