描述 Description

The PCM1690 device is a high-performance, single-chip, 24-bit, eight-channel, audio digital-to-analog converter (DAC) with differential outputs. The eight-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 the PCM1690 supports the time-division-multiplexed (TDM) format in addition to the standard I2S, left-justified, right-justified, and DSP formats.
The PCM1690 can be controlled through a three-wire, SPI-compatible interface, 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 a subset of user-programmable functions through two control pins. The PCM1690 is available in a 12-mm × 8-mm (12-mm × 6-mm body) HTSSOP-48 package.
For all available packages, see the orderable addendum at the end of the data sheet.

特性 Features

? 24-Bit Delta-Sigma DAC
? 8-Channel 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 Lowpass Filter Included
? 4x/8x Oversampling Digital Filter:
- Passband Ripple: ±0.0018 dB
? Stop Band Attenuation: ?75 dB
? Zero Flag
? Flexible Audio Interface:
- I/F Format: I2S?, Left-/Right-Justified, DSP, TDM
? Data Length: 16, 20, 24, 32 Bits
? Flexible Mode Control:
- 3-Wire SPI, 2-Wire I2C-Compatible Serial Control Interface, or Hardware Control
? Multiple Functions Through SPI or I2C I/F:
- Audio I/F Format Select: I2S, Left-Justified, Right-Justified, DSP, TDM
? Digital Attenuation and Soft Mute
? Digital De-Emphasis: 32 kHz, 44.1 kHz, 48?kHz
? Data Polarity Control
? Power Down
? Multiple Functions Through H/W Control:
- Audio I/F Format Select: I2S, TDM
? 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: HTSSOP-48
? Operating Temperature Range:
- ?40°C to +85°C