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24-Bit, 192- kHz Sampling, Advanced Segment, Audio Stereo DAC (Rev. C)
Texas Instruments
Description
The PCM1794 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 PCM1794 provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.
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- 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 Small 28-Lead SSOP Package APPLICATIONS A/V Receivers DVD Players Musical Instruments HDTV Receivers Car Audio Systems Digital Multitrack Recorders Other Applications Requiring 24-Bit Audio
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