16/20-Bit, 8-Pin, Delta-Sigma A/D Converters

The CS5510/11/12/13 are low-cost, easy-to-use, Delta-Sigma A/D converters (ADCs) which use charge balance techniques to achieve 16-bit (CS5510/11) and 20-bit (CS5512/13) performance. The A/D converters are available in a space efficient 8-pin SOIC package and are optimized for measuring signals in weigh scale, process control, and other industrial applications.

To accommodate these applications, the A/D converters include a fourth order Delta-Sigma modulator and digital filter. When configured with an external master clock of 32.768 kHz, the filter in the CS5510/12 provides better than 80 dB of simultaneous 50 and 60 Hz line rejection, and outputs conversion words at 53.5 Hz. The CS5511/13 include an on-chip oscillator which eliminates the need for an external clock source.

Low power, a flexible supply, a compact pinout, and ease of use make these products ideal solutions for cost conscience and space constrained applications.

• Delta-Sigma analog-to-digital converter
  • Linearity error: 0.0015% FS
  • Noise-free resolution: up to 17 bits
• Differential bipolar analog inputs
• VREF input range from 250mV to 5V
• 50/60 Hz simultaneous rejection (CS5510/12)
• 16 to 326 Hz output word rate
• On-chip oscillator (CS5511/13)
• Power supply configurations:
  • V+ = 5V, V- = 0V
  • Multiple dual supply arrangements
• Low power consumption
  • Normal mode, 2.5 mW
  • Sleep mode, 10 µW
• Package: 8-pin SOIC (low-cost, compact)