AK4704

ASAHI KASEI AKM CONFIDENTIAL [AK4704] www.DataSheet4U.com = Target Spec = AK4704 2ch 24bit DAC with AV SCART switch GENERAL DESCRIPTION The AK4704 offers the ideal features for digital set-top-box systems. Using AKM's multi-bit architecture for its modulator, the AK4704 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4704 integrates a combination of SCF and CTF filters, removing the need for high cost external filters and increasing performance for systems with excessive clock jitter. The AK4704 also including the audio switches, volumes, video switches, video filters, etc. designed primarily for digital set-top-box systems. The AK4704 is offered in a space saving 48-pin LQFP package. FEATURES DAC † Sampling Rates Ranging from 8kHz to 50kHz † 64dB High Attenuation 8x FIR Digital Filter † 2nd order Analog LPF † On chip Buffer with Single-ended Output † Digital de-emphasis for 32k, 44.1k and 48kHz sampling † I/F format: 24bit MSB justified, I2S, 18/16bit LSB justified † Master clock: 256fs, 384fs † High Tolerance to Clock Jitter Analog switches for SCART Audio section † THD+N: -86dB (@2Vrms) † Dynamic Range: 96dB (@2Vrms) † Stereo Analog Volume with Zero-cross Detection Circuit (+6dB to –60dB & Mute) † Six Analog Inputs Two Stereo Input (TV&VCR SCART) One Stereo Input (changeover to internal DAC) † Five Analog Outputs Two Stereo Outputs (TV, VCR SCART) One Mono Output (Modulator) † Pop Noise Free Circuit for Power on/off Video...