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TDA8798 Description

The TDA8798 is a dual 8-bit ADC with DPGA. The 100 Msps maximum sampling rate and 34 dBV DPGA gain range optimizes the ADC for high dynamic range applications.

TDA8798 Key Features

  • Dual 8-bit Analog-to-Digital Converter (ADC)
  • Sampling rate up to 100 million samples per second (Msps)
  • Dual 34 dBV 6-bit Digitally Programmable Gain Amplifier (DPGA) with optional power-off
  • Optional external equalization filter with capacitive coupling between DPGA and ADC
  • Serial Interface (SI) for DPGA gain control using either parallel load mode or count-up/count-down mode
  • 3.3 V TTL/CMOS patible I/O
  • Differential or single-ended TTL/CMOS clock interface
  • AC or DC coupling for DPGA inputs. QUICK REFERENCE DATA SYMBOL VDDA VDDD VDDO IDDA IDDD IDDO INL PARAMETER analog supply
  • 30 100
  • ±0.5 ±0.5 tbf 120 tbf