PCM3168A Texas instruments

PCM3168A

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PCM3168A

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Описание

The PCM3168A device is a high-performance, single-chip, 24-bit, 6-in/8-out, audio coder and decoder (codecs) with single-ended and differential-selectable analog inputs and differential outputs. The six-channel, 24-bit analog-to-digital converter (ADC) employs a delta-sigma (ΔΣ) modulator and supports 8-kHz to 96-kHz sampling rates and a 16-bit/24-bit width digital audio output word on the audio interface. The eight-channel, 24-bit digital-to-analog converter (DAC) employs a ΔΣ modulator and supports 8-kHz to 192-kHz sampling rates and a 16-bit/24-bit width digital audio input word on the audio interface. Each audio interface supports I2S, left-justified, right-justified, and DSP formats with 16-bit/24-bit word width. In addition, the PCM3168A device supports the time-division-multiplexed (TDM) format. The PCM3168A device can be controlled through a four-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 four control pins. The PCM3168A device is available in a 12-mm × 12-mm (10-mm × 10-mm body) HTQFP-64 PowerPAD™ package.

24-Bit ΔΣ ADC and DAC
Six-ChanneL ADC:
- High Performance: Differential and Single-
  Ended, f_S = 48 kHz
- THD+N: –93 dB (Differential and Single-
  Ended)
- SNR: 107 dB (Differential),
  104 dB (Single-Ended)
- Dynamic Range: 107 dB (Differential),
  104 dB (Single-Ended)
- Sampling Rate: 8 kHz to 96 kHz
- System Clock: 256 f_S, 384 f_S, 512 f_S, 768 f_S
- Differential Voltage Input: 2 V_RMS
- Single-Ended Voltage Input: 1 V_RMS
- Decimation Filter:
  - Passband Ripple: ±0.035 dB
  - Stop Band Attenuation: –75 dB
- On-Chip, Highpass Filter:
  0.96 Hz at f_S = 48 kHz
- Overflow Flag
Eight-Channel DAC:
- High Performance: Differential, f_S = 48 kHz
- THD+N: –94 dB
- SNR: 112 dB
- Dynamic Range: 112 dB
- Sampling Rate: 8 kHz to 192 kHz
- System Clock: 128 f_S, 192 f_S, 256 f_S, 384 f_S,
  512 f_S, 768 f_S
- Differential Voltage Output: 8 V_PP
- Analog Lowpass Filter Included
- 4x/8x Oversampling Digital Filter:
  - Passband Ripple: ±0.0018 dB
  - Stop Band Attenuation: –75 dB
- Zero Flag
Flexible Mode Control:
- Four-Wire SPI&gtrade;, Two-Wire I²C™ Compatible
  Serial Control Interface or Hardware Control
Multi Functions Through SPI or I2C I/F:
- Audio I/F Mode and Format Select for ADC
  and DAC
- Digital Attenuation and Soft Mute for ADC and
  DAC
- Digital De-Emphasis: 32, 44.1, and 48 kHz for
  DAC
Multi Functions Through H/W Control:
- Audio I/F Mode/Format Select
- Digital De-Emphasis Filter: 44.1 kHz for
  DAC
External Reset Pin:
- ADC/DAC Simultaneous
Audio Interface Mode:
- ADC/DAC Independent Master and Slave
Audio Data Format:
- ADC/DAC Independent I²S, Left-Justified,
  Right-Justified, DSP, TDM
Power Supplies: 5 V for Analog and 3.3 V for
Digital
Package: HTQFP-64
Operating Temperature Range:
- Consumer Grade: –40°C to 85°C
- Automotive Audio Grade: –40°C to 105°C

Number of ADC channels	6
Number of DAC channels	8
Digital audio interface	DSP, I2S, L, R, TDM
Analog inputs	6
Analog outputs	8
Sampling rate (max) (kHz)	192
Rating	Catalog
ADC SNR (typ) (dB)	107
DAC SNR (typ) (dB)	112
Operating temperature range (°C)	-40 to 85