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.
●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
