Sample and Hold Circuit

Sample and Hold Circuit: Four basic sample and hold circuit are shown in Fig. 14.141. In these circuits a JFET is used as switch. During the sampling time the JFET switch is turned on, and the holding capacitor charges up to the level of the analog input voltage. At the end of this short sampling […]

Sample and Hold IC

Sample and Hold IC: Sample and Hold IC – For accurate analog to digital conversion the analog input voltage should be held constant during the conversion cycle. If the analog input voltage changes by more than ± 1/2 LSB an error can occur in the digital output code. To illustrate the effect of a changing […]

ADC 7109 Features

ADC 7109 Features: The ADC 7109 Features are namely, IC 7109 is a 12-bit dual slope A/D converter. It has polarity and overrange bits. It has byte organized TTL compatible three-state outputs and UART handshake mode for simple parallel or serial interfacing to microprocessor systems. It has RUN/HOLD input and STATUS output, which can be used […]

ADC0808 Pin Diagram

ADC0808 Pin Diagram: The ADC0808 Pin Diagram and ADC 0809 are monolithic CMOS devices with an 8-channel multiplexer. These devices are also designed to operate from common microprocessor control buses, with tri-state output latches driving the data bus. The main features of ADC0808 Pin Diagram are : 8-bit successive approximation ADC. 8-channel multiplexer with address […]