音频数/模转换器 IC 132-dB, 24-bit, 192-kHz advanced Segment, Audio Stereo Digital-to-Analog Converter 28-SSOP -40 to 125
Description
The PCM1794A-Q1 device is a monolithic, CMOS integrated circuit that includes stereo digital-to-analog converters DACs and support circuitry in a small 28-pin SSOP package. The data converters use ’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1794A-Q1 device provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.
Features
• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
– Device HBM Classification Level 2
– Device CDM Classification Level C6
• 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-Bit 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-Pin SSOP Package
Applications
• A/V Receivers
• Automotive Head Units
• Musical Instruments
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio
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