AK4958EG

Codecs Overview

The AK4958EG is a 24-bit stereo CODEC integrating microphone and speaker amplifiers, a video amplifier, and an LDO. It operates on AVDD (2.8–3.6V), DVDD (1.6–2.0V), and TVDD (1.6–3.6V). The ADC achieves S/(N+D) of 83dB at +18dB gain and 85dB at 0dB gain. The DAC provides 1Vrms line output with 85dB S/(N+D) and 92dB S/N. The mono speaker amplifier delivers 400mW into 8Ω with 65dB S/(N+D). Sampling rates range from 7.35kHz to 48kHz. It supports I2C/3-wire interfaces and operates between -30°C and 85°C.

Codecs Feature Summary

• Integrated mono speaker amplifier with BTL output capability
• Built-in composite video signal input and output amplifier
• Digital Automatic Level Control for recording and playback
• Supports digital microphone interface alongside analog inputs

Codecs Applications

• Portable devices requiring integrated audio and video processing
• Digital recording systems with microphone pre-amplification
• Home theater systems utilizing composite video signals
• Fixed equipment with combined audio/video requirements

Codecs Procurement Notes

Verify the specific package type against the datasheet; the EG suffix denotes a 32-pin BGA. Confirm power supply configurations match the recommended operating conditions. Ensure control interface settings align with system requirements before ordering.

Codecs Selection Notes

Select this component when a single IC must handle both audio and composite video functions. Compare pin counts and pitch dimensions against board space constraints. Verify that the required sampling frequencies and power supply voltages fall within the specified operational ranges.

Codecs Part Context

This device belongs to Asahi Kasei Microdevices' portfolio of high-performance audio codecs. It is designed to reduce external component count by combining multiple functional blocks. The product line targets applications demanding high integration and low power consumption.

Codecs Replacement Considerations

The AK4958ECB is a direct alternative featuring a 25-pin CSP package. Check pin compatibility and voltage levels carefully. Verify if the reduced pin count meets all system interface requirements.