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1. Description
Intersil ICL7135CPI precision A/D converter Multiplexed BCD output and digital driver, combined with dual slope conversion reliability and ±20,000 parts count accuracy Very suitable for the visual display DVM/DPM market. 2.0000V full-scale capability, auto-zero and auto-polarity combined with true proportional operation, almost Ideal differential linearity and true differential input. All The necessary active devices are contained on a single CMOS lC, except for the display driver, reference and a bell. ICL7135 brings together an unprecedented combination It has high precision, versatility and real economy. Its characteristics Automatic zero adjustment to less than 10μV, zero drift less than 1μV/oC, The input bias current is 10pA (Max), the flip error is smaller Than one count. The versatility of multiplexed BCD output is Increase by adding a few pins Run in a more complex system. These include Stroboscopic, overrange, underrange, run/hold and BUSY line, you can connect the circuit to Microprocessor or UART.
2. Features
1. Accuracy Guaranteed to ±1 Count Over Entire ±20000 Counts (2.0000V Full Scale)
2. Guaranteed Zero Reading for 0V Input
3. 1pA Typical Input Leakage Current
4. True Differential Input
5. True Polarity at Zero Count for Precise Null Detection
6. Single Reference Voltage Required
7. Overrange and Underrange Signals Available for AutoRange Capability
8. All Outputs TTL Compatible
9. Blinking Outputs Gives Visual Indication of Overrange
10. Six Auxiliary Inputs/Outputs are Available for Interfacing to UARTs, Microprocessors, or Other Circuitry
11. Multiplexed BCD Outputs
12. Pb-Free Plus Anneal Available (RoHS Compliant)
3. Pin configuration
4. Dual-In-Line Plastic Packages
