Описание
The Maxim ICL7117CQH are 3½ digit monolithic analog-to-digital converters. They differ from the ICL7106 and ICL7107 in that the ICL7116 and ICL7117CQH have a Hold pin, which makes it possible to hold or “freeze” a reading. These integrating ADCs have very high input impedances and directly drive LED (ICL7117CQH) displays. The Versatility and accuracy are inherent features of these converters. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input is particularly useful when making ratio metric measurements (ohms or bridge transducers). Maxim has added a zero-integrator phase to the ICL7117CQH, eliminating over range hangover and hysteresis effects. Finally, these devices offer high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/ºC.
- Improved 2nd Source!
- Hold Pin Allows Indefinite Display Hold
- Guaranteed First Reading Recovery from Over range
- On-Board Display Drive Capability-No External Circuitry Required: LED (ICL7117)
- High-Impedance CMOS Differential Inputs
- Low Noise (< 15µVP-P) Without Hysteresis or Over range Hangover
- Clock and Reference On-Chip
- Zero Input Gives Zero Reading
- True Polarity Indication for Precision Null Applications
