1FEATURES
234• Qualified for Automotive Applications
• Enhanced Multi-Level Delta-Sigma DAC:
– High Performance: Differential, fS = 48 kHz
– THD+N: –94 dB
– SNR: 113 dB
– Dynamic Range: 113 dB
– Sampling Rate: 8 kHz to 192 kHz
– System Clock: 128 fS, 192 fS, 256 fS, 384 fS,
512 fS, 768 fS, 1152 fS – Differential Voltage Output: 8 V PP
– Analog Low-Pass Filter Included
– 4x/8x Oversampling Digital Filter:
– Passband Ripple: ±0.0018 dB
– Stop Band Attenuation: –75 dB
– Zero Flags (16-/20-/24-Bits)
• Flexible Audio Interface:
– I/F Format: I2S™, Left-/Right-Justified, DSP
– Data Length: 16, 20, 24, 32 Bits
• Flexible Mode Control:
– 3-Wire SPI™, 2-Wire I2C™-Compatible
Serial Control Interface, or
Hardware Control
– Connect Up To 4 Devices on One SPI Bus
• Multi Functions via SPI or I2C I/F:
– Audio I/F Format Select: I2S, Left-Justified,
Right-Justified, DSP
– Digital Attenuation and Soft Mute
– Digital De-Emphasis: 32 kHz, 44.1 kHz,
48 kHz
– Data Polarity Control
– Power-Save Mode
• Multi Functions via Hardware Control:
– Audio I/F Format Select: I2S, Left-Justified
– Digital De-Emphasis Filter: 44.1 kHz
• Analog Mute by Clock Halt Detection
• External Reset Pin
• Power Supplies:
– 5 V for Analog and 3.3 V for Digital
• Package: TSSOP-24
• Operating Temperature Range:
– –40°C to +105°C

APPLICATIONS
• AV Receivers
• Car Audio External Amplifiers
• Car Audio AVN Applications

DESCRIPTION
The PCM1789-Q1 is a high-performance, single-chip,
24-bit, stereo, audio digital-to-analog converter (DAC)
with differential outputs. The two-channel, 24-bit DAC
employs an enhanced multi-level, delta-sigma (ΔΣ)
modulator, and supports 8 kHz to 192 kHz sampling
rates and a 16-/20-/24-/32-bit width digital audio input
word on the audio interface. The audio interface of
PCM1789-Q1 supports a 24-bit, DSP format in
addition to I2S, left-justified, and right-justified
formats.
The PCM1789-Q1 can be controlled through a
three-wire, SPI-compatible or two-wire,
I2C-compatible serial interface in software, which
provides access to all functions including digital
attenuation, soft mute, de-emphasis, and so forth.
Also, hardware control mode provides two
user-programmable functions through two control pins. The PCM1789-Q1 is available in a 24-pin
TSSOP package.