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PCM1792 - 132dB SNR Highest Performance 24-Bit Stereo DAC

The PCM1792 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI�s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1792 provides balanced current outputs, allowing the user to optimize analog performance externally. The PCM1792 accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1792 also accepts to interface external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an SPI or I2C serial control port, which supports register write and readback functions. The PCM1792 also supports the time division multiplexed command and audio (TDMCA) data format.

FEATURES
� 24-Bit Resolution
� Analog Performance:
− Dynamic Range:
− 132 dB (9 V rms, Mono)
− 129 dB (4.5 V rms, Stereo)
− 127 dB (2 V rms, Stereo)
− THD+N: 0.0004%
� Differential Current Output: 7.8 mA p-p
� 8� Oversampling Digital Filter:
− Stop-Band Attenuation: �130 dB
− Pass-Band Ripple: �0.00001 dB
� Sampling Frequency: 10 kHz to 200 kHz
� System Clock: 128, 192, 256, 384, 512, or
768 fS With Autodetect
� Accepts 16-, 20-, and 24-Bit Audio Data
� PCM Data Formats: Standard, I2S, and
Left-Justified
� DSD Format Interface Available
� Optional Interface to External Digital Filter or
DSP Available
� TDMCA or Serial Port (SPI/I2C)
� User-Programmable Mode Controls:
− Digital Attenuation: 0 dB to �120 dB,
0.5 dB/Step
− Digital De-Emphasis
− Digital Filter Rolloff: Sharp or Slow
− Soft Mute
− Zero Flag for Each Output
� Dual Supply Operation:
− 5-V Analog, 3.3-V Digital
� 5-V Tolerant Digital Inputs
� Small 28-Lead SSOP Package
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