PCM1794A-Q1 Texas instruments

PCM1794A-Q1

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PCM1794A-Q1

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Описание

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. For all available packages, see the orderable addendum at the end of the data sheet.

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 f_S 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

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Number of DAC channels	2
Analog inputs	0
Analog outputs	2
DAC SNR (typ) (dB)	127
Sampling rate (max) (kHz)	192
Control interface	H/W
Resolution (Bits)	24
Architecture	Advanced Segment
Operating temperature range (°C)	-40 to 125
Rating	Automotive