CA3162E Integrated Circuit

The CA3162E is a 3-digit dual-slope analogue-to-digital converter (ADC), specifically designed for multiplexed LED display systems (compatible with common-cathode displays).

Here are the main technical specifications:

• Manufacturer/Family: Intersil / Renesas (CA3162 family).
• Package: 16-pin DIP (Plastic Dual In-line Package).
• Resolution: 3 digits (up to 999 counts).
• Supply voltage:
  • Typical: $\pm 5\text{V}$ (requires both positive and negative supplies).
• Conversion rate: Approximately 4 conversions per second (typical for measuring instruments).
• Linearity: $\pm 0.1% (\pm 1\text{ digit})$.
• Input impedance: Very high (CMOS technology).
• Outputs:
  • Multiplexed BCD (Binary-Coded Decimal) data.
  • Digit select lines.
• Key features:
  • Auto-zero.
  • Automatic polarity (detects positive or negative inputs).
  • Internal voltage reference (or external for greater precision).
• Typical applications: Digital voltmeters (DVM), multimeters, control panels, and numerical measuring instruments.