| Number of DAC channels (#) | 8 |
| Analog inputs | 0 |
| Analog outputs | 8 |
| DAC SNR (Typ) (dB) | 113 |
| Sampling rate (Max) (kHz) | 192 |
| Control interface | SPI, I2C, H/W |
| Resolution (Bits) | 24 |
| Architecture | Current Segment DAC |
- 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
- I/F Format: I2S?, Left-/Right-Justified, DSP,
- Flexible Mode Control:
- 3-Wire SPI, 2-Wire I2C-Compatible Serial
Control Interface, or Hardware Control
- 3-Wire SPI, 2-Wire I2C-Compatible Serial
- 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
- Audio I/F Format Select: I2S, Left-Justified,
- 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
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.
