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…
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…
IC 7109 Features: The IC 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…
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…
ADC0804 Family: The ADC0804 Family are ADC0803, ADC0804 and ADC0805 are CMOS 8-bit successive-approximation analog to digital converters. These devices are design to operate from common microprocessor control buses, with tri-state output latches driving the…
DAC0830 Digital to Analog Converter: The DAC0830 Digital to Analog Converter is an advanced CMOS 8-bit DAC designed to interface directly with the 8080, 8048, 8085, Z80, and other popular microprocessors. A deposited silicon-chromium R-2R…
IC 1408 DAC Pin Diagram: The IC 1408 DAC Pin Diagram is an 8 bit R/2R ladder type D/A converter compatible with TTL and CMOS logic. It is designed to use where the output current…
8279 Keyboard Display Controller Interfacing with 8085: Fig. 14.98 shows the 8279 Keyboard Display Controller Interfacing with 8085 in I/O mapped I/O technique. Here RD and WR signals are activated when IO/M signal is high,…
Operating Modes of 8279: The Operating Modes of 8279 provides 3 basic input modes : Scanned keyboard Scanned sensor matrix Strobed input Scanned Keyboard: In this mode, keyboard can be scaned in two ways :…
8279 Block Diagram: Fig. 14.84 shows the 8279 Block Diagram. It consists of four main sections CPU interface and control section Scan section 8279 Keyboard section Display section 1.CPU Interface and Control Section: This section…
