The document introduces the features of Asahi Kasei AK4543 codec, which is a 18-bit high performance codec compliant with Audio Codec ’97 Rev 2.1 requirements.
The AK4543 is an 18‑bit high‑performance audio CODEC compliant with AC'97 Rev 2.1. It offers four stereo inputs (LINE, CD, VIDEO, AUX), a speakerphone input, and PC BEEP input, plus stereo and mono outputs with independent volume control. The device can operate as a primary or secondary codec and supports multiple‑codec configurations for docking stations and multi‑speaker systems.
The datasheet provides detailed pin‑out information, absolute maximum ratings, analog and digital filter characteristics, switching timing, and power‑on/reset procedures. Key electrical specifications include 5 V analog and 3.3 V/5 V digital supplies, 200 mW typical power consumption, and a 48‑pin LQFP package.
| Resolution | 18 Bits |
|---|---|
| Signal‑to‑Noise Ratio (ADC, A‑weighted) | 85‑90 dB |
| Power Consumption (full operation) | 200 mW (Analog:5V/Digital:3.3V) |
| Package | 48‑pin LQFP |
| Supply Voltages | Analog 5.0 V, Digital 3.3 V or 5.0 V |
| Sampling Rate | 48 kHz |
The AK4543 operates from –10 °C to 70 °C ambient temperature.
It provides four stereo inputs: LINE, CD, VIDEO, and AUX.
Yes, the AK4543 can function as either a primary or secondary AC'97 codec.
The device is supplied in a 48‑pin LQFP package.