1 Features
1• 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 CMOS•
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

2 Applications
• A/V Receivers
• Automotive Head Units
• Musical Instruments
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio

3 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 TI’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.