FEATURES
ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
COMPLETE STEREO DAC: Includes Digital Filter
and Output Amp
DYNAMIC RANGE: 94dB
MULTIPLE SAMPLING FREQUENCIES:
16kHz, 22.05kHz, 24kHz
32kHz, 44.1kHz, 48kHz
64kHz, 88.2kHz, 96kHz
PROGRAMMABLE PLL CIRCUIT:
256fS/384fS from 27MHz Master Clock
NORMAL OR I2S™ DATA INPUT FORMATS
SELECTABLE FUNCTIONS:
Soft Mute
Digital Attenuator (256 Steps)
Digital De-emphasis
OUTPUT MODE: Left, Right, Mono, Mute

DESCRIPTION
The PCM1723 is a complete, low-cost, stereo audio
digital-to-analog converter (DAC) with a phase-locked
loop (PLL) circuit included. The PLL derives either a
256fS or 384fS system clock from an external 27MHz
reference frequency. The DAC contains a 3rd-order
delta-sigma (ΔΣ) modulator, a digital interpolation filter,
and an analog output amplifier. The PCM1723 can
accept 16-, 20-, or 24-bit input data in either normal or
I2S formats.
The digital filter performs an 8X interpolation function
and includes selectable features such as soft mute,
digital attenuation and digital de-emphasis. The PLL
can be programmed for sampling at standard digital
audio frequencies as well as one-half and double
sampling frequencies.
The PCM1723 is ideal for applications which combine
compressed audio and video data such as DVD, DVDROM,
set-top boxes and MPEG sound cards.