31/2 Digit/ LCD/LED Display/ A/D Converter with Display Hold The ICL7117CPL is a 3½ digit analog-to-digital converter (ADC) manufactured by **INTERSIL** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Resolution:** 3½ digits (2000 counts).
- **Input Voltage Range:** ±200mV or ±2V (user-selectable).
- **Reference Voltage:** Requires an external reference (typically 1V for full-scale 2V range).
- **Conversion Rate:** ~3 readings per second.
- **Power Supply:** Single +5V supply (operates from ±5V for dual supply).
- **Display Driver:** Directly drives **common anode** LED displays (7-segment).
- **Package:** 40-pin **PLCC (Plastic Leaded Chip Carrier)**.
- **Operating Temperature Range:** 0°C to +70°C (commercial grade).
### **Descriptions:**
- The ICL7117CPL is a **low-power, high-accuracy** ADC designed for digital panel meters and instrumentation.
- It includes **auto-zeroing** and **true differential input** for noise rejection.
- Features **internal segment drivers** for LED displays, eliminating the need for external decoding logic.
- Optimized for **low-power** operation, making it suitable for battery-powered applications.
### **Features:**
- **Direct LED Display Drive** (7-segment, common anode).
- **Low Power Consumption** (~10mW typical).
- **True Polarity Indication** (positive/negative readings).
- **Auto-Zero Cycle** for improved accuracy.
- **On-Chip Clock Oscillator** (requires only an external capacitor).
- **High Input Impedance** (>10¹²Ω).
- **Low Noise** (typically <15µV peak-to-peak).
This information is strictly based on the manufacturer's datasheet for the **ICL7117CPL** by **INTERSIL**.
