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 () 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.
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 VPP
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
SPI is a trademark of Motorola, Inc.
I2S, I2C are trademarks of NXP Semiconductors.
All other trademarks are the property of their respective owners.
