The PCM1789 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 supports a 24-bit, DSP format in addition to I2S, left-justified, and right-justified formats.
●The PCM1789 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 is available in a 24-pin TSSOP package.
● 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: 32kHz, 44.1kHz, 48kHz
● Data Polarity Control
● Power-Save Mode
● Multi Functions via Hardware Control:
● Audio I/F Format Select: I2S, Left-Justified
● Digital De-Emphasis Filter: 44.1kHz
● 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 85°C
