MICROCHIP TC7117CPL 模数转换器, 3.5 bit, 单, 5 V, DIP
The is a 3-1/2-digit CMOS Analog-to-digital Converter ADC containing all the active components necessary to construct a 0.05% resolution measurement system. Seven-segment decoders, polarity and digit drivers, voltage reference and clock circuit are integrated on-chip. This device drives common anode light emitting diode LED displays directly with a 8mA drive current per segment. These devices incorporate a display hold HLDR function. The displayed reading remains indefinitely, as long as HLDR is held high. Conversions continue, but output data display latches are not updated. The reference low input VREF- is not available, as it is with the TC7106/7107. VREF- is tied internally to analog common in the TC7116A/7117A devices. High-impedance differential inputs offer 1pA leakage current and a 10¹²R input impedance. The 15µVP-P noise performance enables a rock solid reading. The auto-zero cycle ensures a zero display reading with a 0V input.
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