PCM1789数据手册集成电路（IC）的ADC/DAC-特殊用途规格书PDF

描述 Description

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.

特性 Features

• 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