The PCM1794A 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 PCM1794A provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.


Features
24-Bit Resolution
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- and 24-Bit Audio Data
PCM Data Formats: Standard, I2S, and Left-Justified
Optional Interface Available to External Digital Filter or DSP
Digital De-Emphasis
Digital Filter Rolloff: Sharp or Slow
Soft Mute
Zero Flag
Dual-Supply Operation:
5-V Analog, 3.3-V Digital
5-V Tolerant Digital Inputs