OVERVIEW

The SM5877AM is a 3rd-order Σ∆, 2-channel D/A converter LSI for digital audio reproduction equipment. It also incorporates an 8-times oversampling digital filter and analog, post-converter lowpass filters.

FEATURES

■ 2.7 to 5.5 V operating supply voltage range

■ 4.5 to 5.5 V operating supply voltage range for double-speed mode

■ 44.1 kHz sampling frequency

■ Normal (384fs) and double-speed (192fs), 16.9344 MHz system clock

■ 16.9344 MHz crystal oscillator circuits built-in

■ 16-bit, MSB first, rear-packed serial data input format (≤ 64fs bit clock)

■ 8-times oversampling digital filter

• 32 dB stopband attenuation

• ±0.05 dB passband ripple

■ Deemphasis filter operation

• 36 dB stopband attenuation

• −0.09 to +0.23 dB deviation from ideal deemphasis filter characteristics

■ Attenuator

• 6-bit attenuator (64 steps)

• Soft mute function when MODE is HIGH (approx. 1024/fs total muting time)

■ Built-in infinity-zero detector

■ Σ∆ 2-channel D/A converter

• 3rd-order noise shaper

• 32fs oversampling (16fs for double-speed mode)

■ 3rd-order analog, post-converter lowpass filters built-in (165 kHz cut-off frequency)

■ 24-pin SSOP

■ Molybdenum-gate CMOS process