PCM1794AQDBRQ1

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