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 TIs 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.
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