PH4705/ET4305: A/D: Analogue to Digital Conversion Typical Devices: Data sheets are on the web site for A/D 8 bit parallel AD7819 and serial ADC0831 And.

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Presentation transcript:

PH4705/ET4305: A/D: Analogue to Digital Conversion Typical Devices: Data sheets are on the web site for A/D 8 bit parallel AD7819 and serial ADC0831 And Analogue Mux DG506/7 & CD4051/2 and Sample and Hold LF198 & AD585

PH4705/ET4305: A/D: Analogue to Digital Conversion AD7819, 8bit Parallel A/D: Designed to work with modern logic families with power supply of 2.7, 3.6 or 5 volts, with low power consumption and auto-power down for battery operated equipment. Fast conversion time 4.5µs or 200kSps. Reference voltage any value between 1.2v and V+. Parallel output compatible with most microprocessors and DSPs.

PH4705/ET4305: A/D: Analogue to Digital Conversion ADC0831, 8 bit serial A/D: Successive approximation converter with serial output designed to interface to common serial data standards, microprocessors etc. Control signals compatible with common logic families. V+ = 5v Inbuilt analogue multiplexer, direct connection to Wheatstone Bridge. Analogue inputs 0v to V+.

PH4705/ET4305: A/D: Analogue to Digital Conversion AD506/7 Analogue Multiplexer: Single or split supply, inputs anywhere between V+ and V-. 16 single ended or 8 bipolar inputs. Standard logic level control signals. Low leakage.

PH4705/ET4305: A/D: Analogue to Digital Conversion CD4052 Analogue Multiplexer: Single 8 channel, Dual 4 channel, Triple 2 channel. Low on resistance, high off resistance. Analogue signals to ±15v. Wide range of logic control from standard logic levels to 15v.

PH4705/ET4305: A/D: Analogue to Digital Conversion AD585 Sample & Hold: 3µs acquisition time. Droop less than 1mV per ms with internal capacitor. External capacitor 100pF to 10nF for less droop (at expense of longer acquisition). Control signals TTL compatible. Power supply to ±18v.

PH4705/ET4305: A/D: Analogue to Digital Conversion LF198 Sample & Hold: High dc accuracy, fast acquisition, low droop. External hold capacitor, 100pF to 100nF. Acquisition time <10µs. Control signals TTL compatible. Power supply to ±18v.

PH4705/ET4305: A/D: Analogue to Digital Conversion Sample & Hold and Analogue Mux do not have complicated application circuits, however, there are aspects of signal handling and PCB layout that need specialist knowledge and care to achieve optimum performance.