IL145567 is a one-chip PCM codec that converts speech signal into digital form and vice versa. The IC is designed to operate in synchronous and asynchronous systems and consists of a reference generator, filters on switching capacitors in transmission and reception channels, and two operational amplifiers. The IC performs signal companding under A-low and full differential processing of analog signals to reduce noise. Typical power dissipation is 40mW, reduced power is 1mW at ±5V.
The IL145567N is a single‑chip PCM codec filter that converts speech signals to digital form and back. It includes a reference generator, switched‑capacitor filters for transmission and reception channels, and two operational amplifiers. The device operates in both synchronous and asynchronous systems and provides signal companding with low‑noise performance.
The datasheet details supply requirements, pin functions, analog and digital electrical characteristics, clock frequencies, and package dimensions for the plastic DIP version. Key parameters such as supply voltage range, power consumption, input/output voltage levels, and timing specifications are provided for designers.
| Supply voltage (VEE) | 4.75 V – 5.25 V |
|---|---|
| Power consumption (active mode) | 70 mW |
| Power consumption (sleep mode) | 5.0 mW |
| Input voltage low level | 0.6 V |
| Input voltage high level | 2.2 V |
| Package dimensions (A) | 24.89 mm × 26.92 mm |
The device operates with a supply voltage between 4.75 V and 5.25 V.
In active mode without load, the chip consumes about 70 mW.