4 20 Ma Signal Converter Chip

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  • Advances in Mechatronics and Control Engineering
    The A/D converter is MCP3004 made by American Micro chip Company; the monostabillity trigger is 74HC123 from TI Company. The circuit can measure 1 road pulse water meter, 4 - 20 mA current signal from pressure sensors, 4-20mA current signals from fluid level indicators and 1 road switches alarm signal in the meantime.
  • Green Power, Materials and Manufacturing Technology and Applications II
    Output signal : 4 ~ 20mA A/D converter design The design of A/D converter chip 's serial Ti chip TLC2543 [3], A/D converter TLC2543 and PLC as the interface circuit, it was a use of 12-bit successive approximation analog switched-capacitor ADC , on-chip 14-bit channels …
  • Communication Systems and Information Technology
    The main function of the data acquisition system is to convert the received four 4 ~ 20mA analogy signal from sensor to digital signal through A/D converter . Then the digital signal will be sent to the PC via the USB communication interface control chip .
  • Advanced Electrical and Electronics Engineering
    System first uses the MAX490 as a level converter chip to convert the RS485 signal into a TTL level sig- nal, the signal is isolated through a photo coupler and sent into the IO port of the FPGA. 2) Position Transducer: The output of the position transducer is 4 - 20mA analog sig- nal, it is converted to 0.48-2.4V voltage signal with a 120Ω precise resistor.
  • http://www.nxp.com/documents/data_sheet/LH79524_525_N.pdf
    … Management – 32.768 kHz Oscillator for Real Time Clock – 10 MHz to 20 MHz Oscillator and On- chip PLL – Active, Standby … … – Active Mode: 85 mA (MAX.) – Standby Mode … … • Analog-to-Digital Converter /Brownout Detector – 10 … … Timers with PWM capability • Real Time Clock – 32-bit Up-counter with Programmable Load – Programmable 32-bit Match Compare Register • Programmable General Purpose I/O Signals – LH79524: 108 available … … 64 k (LH79524) or 4 k (LH79525) Direct Colors …
  • Computer and Computing Technologies in Agriculture IV
    Transmitter module transfers digital data to 4 - 20mA output by IC AD694. This chip links with the module’s 12bit DAC converter , and transfers 0-2V which DAC output into standard current signal .
  • Integrated optoelectronic circuits with InP-based HBTs
    This chip , containing over 2000 transistors, is comprised of a photodiode, transimpedance amplifier, limiting amplifier, clock and … … in addition to the photodetectors and transimpedance amplifiers.11 Another OEIC, a 4 -bit flash analog-to-digital converter contains 4 photodiodes for the differential analog input signal and two clock inputs … … is as high as 20 mA .12 We also describe …
  • Development and Application of a Dual-Parameter Instrument for Steam Two Phase Flow
    … the restricting orifice, the circle change of the differential pressure was generated in its two sides,and the continious changing differential pressure signal and the the pressure signal will be changed into 4 ¿ 20 mA current signal by the differential pressure … The signal is converted to the digital quantity by A/D converter ,and the single- chip microcomputer can calculate the parameters of the steam/water two phass flow in virtue of the pressure signal,calculate the mean differential pressure and the its corresponding pulsating …
  • FPGA-based reconfigurable processor for ultrafast interlaced ultrasound and photoacoustic imaging
    The commercial ultrasound receiving boards contain a micro chip (ad9272-65EBZ, analog devices Inc., norwood, Ma ) [ 20 ], which has a programmable octal low-noise amplifier (lna), variable … … VGa), anti-aliasing filter (aaF), and an- alog-to-digital converter (adc) with 40 MHz … The FPGa board contains a Virtex- 4 Xilinx FPGa (Xilinx Inc., san Jose, ca), and a UsB interface that allows interfacing with … … chip (e.g., gain, bandwidth, etc.). also, the FPGa captures the octal low-voltage differential signals (lVds) of double data …
  • Mechatronics and Industrial Informatics
    In this paper the A/D converter is 24 bits high-precision A/D converting chip AD7712, which could convert the ratio of the output voltage to the variation of the resistance to linearity. The input signal of the pressure sensor is ( ４ ～ 20 ) mA DC current, and the input of the A/D should be (0～2.5)V voltage signal, it is necessary to convert and adjust the signal firstly.