PCM1782
106dB SNR 立体声 DAC（软件控制）
The PCM1780/81/82 is a CMOS, monolithic, integrated circuit, which includes stereo digital-to-analog converters and support circuitry in a small 16-lead SSOP package. The data converters use s enhanced multilevel delta-sigma architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1780/81/82 accepts industry standard audio data formats with 16- to 24-bit data, providing easy interfacing to audio DSP and decoder chips. Sampling rates up to 200 kHz are supported. The PCM1780/82 provides a full set of user-programmable functions through a three-wire serial control port, which supports register write functions. The PCM1781 provides a subset of user-programmable functions through four control pins.
The PCM1780 is pin-compatible with the PCM1680 8-channel DAC.
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- 24-Bit Resolution
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- Analog Performance VCC = 5 V:
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- Dynamic Range: 106 dB
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- SNR: 106 dB, Typical
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- THD+N: 0.002%, Typical
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- Full-Scale Output: 3.9 Vp-p, Typical
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- 4×/8× Oversampling Digital Filter:
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- Stop-Band Attenuation: -50 dB
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- Pass-Band Ripple: ±0.04 dB
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- Sampling Frequency: 5 kHz to 200 kHz
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- System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, 1152 fS With Autodetect
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- Software Control PCM1780, :
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- Accepts 16-, 18-, 20-, and 24-Bit Audio Data
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- Formats: Right-Justified, I2S, and Left-Justified
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- Digital Attenuation: Mode Selectable
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- 0 dB to -63 dB, 0.5 dB/step
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- 0 dB to -100 dB, 1 dB/step
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- Digital De-Emphasis
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- Digital Filter Rolloff: Sharp or Slow
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- Soft Mute
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- Zero Flags for Each Output
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- Open-Drain Output Zero Flag PCM1782
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- Hardware Control PCM1781:
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- I2S and 16-Bit Word, Right-Justified
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- Digital De-Emphasis
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- Soft Mute
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- Zero Flag for L-, R-Channel Common Output
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- Power Supply: 5-V Single Supply
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- Small, 16-Lead SSOP Package 150 mil
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- Pin-Compatible with PCM1680
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- APPLICATIONS
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- A/V Receivers
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- DVD Movie Players
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- DVD Add-On Cards For High-End PCs
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- DVD Audio Players
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- HDTV Receivers
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- Car Audio Systems
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- Other Applications Requiring 24-Bit Audio
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