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TDC-GP22 データシート(PDF) 6 Page - ams AG |
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TDC-GP22 データシート(HTML) 6 Page - ams AG |
6 / 93 page TDC-GP22 acam messelectronic gmbh - Friedrich-List-Str.4 - 76297 Stutensee - Germany - www.acam.de 1-3 1 Overview TDC-GP22 is next generation‘s upgrade for TDC-GP21. It is a 100% pin-to-pin and functional compatible upgrade of TDC-GP21, with an extended functionality. Especially the new first-wave detection capability makes the TDC-GP22 perfectly suited for ultrasonic water meters with their high dynamics. The programmable offset range of the comparator is increased to ± 35 mV and the offset is automatically set back to zero after the first wave detection. Measuring the relative pulse width of the first wave gives the user an indication of the strength of the received signal. This can be used for adopting the system to long-term signal attenuation or for bubble detection. The multi-hit data processing and data read-out is simplified compared to TDC-GP21. All in all, the TDC-GP22 is a further improvement and simplification for the design of ultrasonic heat meters and a necessary step for compact ultrasonic water meters. 1.1 Features Measurement mode 2 1 channel with typ. 90 ps resolution Double resolution mode with 45 ps, Quad resolution mode with 22 ps resolutio n Measurement range 700 ns to 4 ms 3-fold multihit capability with automatic processing of all 3 data Analog Input Circuit Chopper-stabilized low-offset comparator, programmable, ±35 mV First-wave detection: offset set zero automatically after first wave, hit selection relative to first wave First-wave pulse-width measurement for signal monitoring and bubble detection Integrated analog switches for input selection External circuit is reduced to 2 resistors and 2 capacitors Temperature Measurement Unit 2 or 4 sensors, PT500/PT1000 or higher Schmitt trigger integrated 16-Bit eff. with external Schmitt trigger, 17.5-Bit eff. with integrated low noise Schmitt trigger Ultra low current (0.08 µA when measuring every 30 seconds) Special Functions Fire pulse generator, up to 127 pulses Trigger to rising and/or falling edge Precise stop enable by windowing Low-power 32 kHz oscillator (500 nA) Clock calibration unit 7x32 Bit EEPROM Measurement mode 1 2 channels with typ. 90 ps resolution channel double resolution with typ. 45 ps Range 3.5 ns (0 ns) to 2.5 µs 20 ns pulse-pair resolution, 4-fold multihit Member of the ams Group |
同様の部品番号 - TDC-GP22 |
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同様の説明 - TDC-GP22 |
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