PCM1798 123dB SNR Stereo DAC (H/W Control) | TI.com

PCM1798 (ACTIVE) 123dB SNR Stereo DAC (H/W Control)

 

Description

The PCM1798 device is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters (DACs) and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1798 device provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.

Features

  • 24-Bit Resolution
  • Analog Performance:
    • Dynamic Range: 123 dB
    • THD+N: 0.0005%
  • Differential Current Output: 4 mAp-p
  • 8× Oversampling Digital Filter:
    • Stop-Band Attenuation: –98 dB
    • Pass-Band Ripple: ±0.0002 dB
  • Sampling Frequency: 10 kHz to 200 kHz
  • System Clock: 128, 192, 256, 384, 512, or 768 fS
    With Autodetect
  • Accepts 16- and 24-Bit Audio Data
  • PCM Data Formats: Standard, I2S, and Left-
    Justified
  • Interface Available for Optional 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-Lead SSOP Package
  • Pin Assignment Compatible With PCM1794

Parametrics

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Part number Order DAC channels Analog inputs Analog outputs DAC SNR (Typ) (dB) Sampling rate (Max) (kHz) Control interface Resolution (Bits) Architecture Package size: mm2:W x L (PKG) Approx. price (US$)
PCM1798 Order now 2     0     2     123     192     H/W     24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     2.78 | 1ku    
PCM1792A Order now 2     0     2     127     192     SPI
I2C    
24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     7.64 | 1ku    
PCM1794A Order now 2     0     2     127     192     H/W     24     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     7.08 | 1ku    
PCM1795 Order now 2     0     2     123     200     SPI
I2C
TDMCA    
32     Advanced Segment     28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)     2.90 | 1ku