The ADC is able to convert the differential analog input signal into a 255 bit thermometer code word. It uses a flash architecture and interpolating comparator preamplifiers, and is destined mainly for disk drive read or communications channels.

Features:

• Resolution: 8 bit
  
• Maximum conversion rate: 2.5Ms/s
  
• Differential analog input voltage range: 1.905Vp-p (centered on 1.5Vdc)
  
• Integral linearity error: 4LSB
  
• Differential linearity error: 0.5LSB
  
• Signal-to-noise ratio: 45dB typ (preliminary).
  
• Equivalent Bit Number: 7.3 typ (preliminary).
  
• Output data format: 255 bit thermometer code
  
• Pipelined delay (ADC latency): 1 clock cycles
  
• External reference input voltages: 1V and 2V (1.5V +/- 0.5V)
  
• Supply voltage: 3.3V, +/-10% and 1.8V, +/-10%
  
• Dynamic supply current: 5.75mA typ/3.3V and 50mA typ/1.8V.
  
• Total power dissipation:19mW
  
• Power down consumption: 100nA, max.
  
• Operating temperature: 0 - 100^oC
  
• 0.35mm Digital CMOS Process