This document is a GENNUM GP520A datasheet, which introduces the main features of the product.
The GP520A is a programmable analog signal path IC designed for hearing instruments. It provides programmable gain, low‑pass and high‑pass filters, AGC, MPO clipping and a voltage‑drive output stage. All parameters are set via external currents and can be adjusted to suit specific applications.
The document includes functional block diagrams, absolute maximum ratings, electrical characteristics, and typical application circuits. It also lists detailed specifications for each stage, such as input impedance, filter roll‑off, and programmable current sources.
| Typical gain | 60 dB |
|---|---|
| Input impedance (preamp) | 100 kΩ |
| Filter roll‑off | 12 dB/octave |
| AGC adjustable gain | up to 35 dB |
| Supply voltage | 5 V |
| Feedback resistance (output stage) | 240 kΩ |
| Reference current | 2.5 nA |
| MPO clipper load resistor | 40 kΩ |
The GP520A has a typical gain of 60 dB.
The device operates from a 5 V supply.
The GP520A offers programmable parameters for gain, low‑pass and high‑pass filters, AGC threshold, release time, MPO clipping, and receiver bias voltage.
The preamplifier input impedance is 100 kΩ.