Product Summary

The 4705AEQ is a 2ch 24bit DAC. The 4705AEQ offers the ideal features for digital set-top-box systems. Using AKM’s multi-bit architecture for its modulator, the AK4705A delivers a wide dynamic range while preserving linearity for improved THD+N performance. The 4705AEQ 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 4705AEQ also including the audio switches, volumes, video switches, video filters, etc. designed primarily for digital set-top-box systems. The 4705AEQ is offered in a space saving 48-pin LQFP package.

Parametrics

4705AEQ absolute maximum ratings: (1)Power Supply, VD: -0.3 to 6.0V; VVD1: -0.3 to 6.0V; VVD2: -0.3 to 6.0V; VP: -0.3- to 14V ; (2)Input Current (any pins except for supplies), IIN: ±10mA; (3)Input Voltage, VIND: -0.3 to VD+0.3V ; (4)Video Input Voltage, VINV: -0.3 to VVD1+0.3V; (5)Audio Input Voltage (except DACL/R pins), VINA: -0.3 to VP+0.3V; (6)Audio Input Voltage (DACL/R pins), VINA: -0.3 to VD+0.3V; (7)Ambient Operating Temperature, Ta: -10 to 70℃; (8)Storage Temperature, Tstg: -65 to 150℃.

Features

4705AEQ features: (1)Sampling Rates Ranging from 32kHz to 50kHz; (2)64dB High Attenuation 8x FIR Digital Filter; (3)2nd Order Analog LPF; (4)On Chip Buffer with Single-Ended Output; (5)Digital De–Emphasis for 32k, 44.1k and 48kHz Sampling; (6)I/F Format: 24bit MSB Justified, I2S, 18/16bit LSB Justified; (7)Master Clock: 256fs, 384fs; (8)High Tolerance to Clock Jitter.

Diagrams

4705AEQ block diagram