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| No.8176974
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Information Name: | Supply of the TDC-GP21 |
Published: | 2012-01-31 |
Validity: | 3600 |
Specifications: | TDC-GP21 |
Quantity: | 1.00 |
Price Description: | |
Detailed Product Description: | The TDC-GP21 acam for TDC-GP2 next update. It provides the TDC-GP2 pin-to-pin pin is fully compatible with the function, in addition to some performance improved, the increase in the number of extended features. Analog part, such as the integration of the components of the chopper-stabilized comparator, and analog switch ultrasonic heat meter circuit design more streamlined and compact. The same time, the measurement of quality is also improved measurement of power consumption will be reduced. In addition, a further extension of the pulse generator the number of transmit pulse, and integrated within a 32k low-power crystal oscillator drive. The temperature measurement unit integrated Schmitt trigger, to make the measurement easier. In short, the TDC-GP21 perfect fit due to its high integration and low price in the application of ultrasonic heat meters and flow meters. Key Features Measurement range 2 Typical accuracy of the single-channel 90ps · Double-precision mode 45 ps 22 ps, quad-precision mode Measurement range 500 ns to 4 ms · 2 x CLKHS pulse minimum interval can accept up to three pulse 3 pulses each of which can set a precise time window, the window an accuracy of 10ns. Analog input section Chopper-stabilized low-noise comparator Two analog switches as the input selector ? External circuit requires only two resistors and two capacitors Special Function Pulse generator can produce up to 127 pulses Can choose the rising and / or falling edge sensitive Precision accept the stop pulse by the window function Low-power 32 kHz oscillator (500 nA) · The clock calibration unit 7x32-bit EEPROM Temperature measurement unit · 2 or 4 sensors · PT100/PT500/PT1000 or higher Integrated Schmitt trigger High temperature measurement accuracy: 16 effective accuracy (application foil resistance 0.004 ° C accuracy) Ultra-low current consumption (0.08 μA when measured once every 30 seconds) Measurement range 1 Dual-channel typical accuracy of 90 ps, · Single-channel double-precision 45 ps · Measurement range 3.5 ns (0 ns) to 2.5 μs · 20 ns minimum pulse interval, to accept up to four pulses Review · 4 - wire SPI interface · Measurement range 1 the highest among the measurements per second a million times The I / O voltage of 2.5 V to 3.6 V Core voltage of 2.5 V to 3.6 V · Temperature range - 40 ° C to +125 ° C · QFN 32 package Specification Measuring accuracy: Typical 90ps, in double precision mode 45ps (measuring range 1 and range 2), four precision mode is 22ps (only in measurement range 2) Maximum measurement frequency: Up to a maximum of 1 million measurements per second Supply voltage: 2.5V to 3.6V Working temperature: -40 ° C to 125 ° C Quiescent current: <0.1 μA INL: <0.1 LSB DNL of: <0.8 LSB Evaluation system of time-to-digital conversion device TDC-GP21 Whether you are just products of the the acam company TDC-GP21, or preparing to build the prototype of a complete measurement, the GP21 assessment system can help you successfully completed for the understanding and assessment of the TDC-GP21 chip, and allows you to more quickly chip applications your own application. Feature Support of PC systems, PICOPROG interface module and the PC USB port to communicate (including in the system) SPI interface connector No additional power supply, power supply provided by PICOPROG Very convenient to the Windows graphical user to assess the measurement software Size is very compact Time-to-digital conversion device TDC-GP21 ultrasonic heat meter applications TDC-GP21 perfectly suitable for the application of the design of low-cost ultrasonic heat meters. Internal integration capabilities, including analog signal processing part of the temperature measurement part of the pulse transmitter and echo window and clock calibration function, only need to add a simple microcontroller (without AD converter) can be achieved Calorimeter system. The ultra-low power of measurement to ensure long battery life. MCU only through a command tells the TDC-GP21 can be measured. Then TDC will trigger transducer to measure time intervals, followed by calibration measurements and then sent to the microcontroller. Current consumer a time measurement 32.768kHz: provided by the microcontroller: <1.0 microamps 4 MHz: <1 Naan, in sleep mode in the working mode of 130 microamps. TDC: high-speed measurement unit start for the 4 mA. 2 measurements per second (downstream and upstream), the total current consumption of <2 microampere. (b) temperature measurement The first complete measurement of the four ports only need less than 200 microamps second current. The general temperature measurement is 30 seconds, then the average current is about 0.08 microampere. c static current Super-current optimization techniques, the static current of less than 100 nano-amp. (d) the total current The total current measuring devices (the TDC, the analog portion of the transducer) can be reduced to the minimum 2.2uA. If the application of the analog part of the. Low-power microcontroller (such as the Texas Instruments MSP430 series) instrument as a whole the average current consumption can be controlled at 10-15 microamps. In this case, can be used without replacing the lithium battery? AA batteries for 10 years! Can even use a low-cost 3V CR2450 button batteries in the case of six years! |
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Copyright © GuangDong ICP No. 10089450, Electronic Technology Co., Ltd. Shanghai Heng Hui All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
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You are the 23222 visitor
Copyright © GuangDong ICP No. 10089450, Electronic Technology Co., Ltd. Shanghai Heng Hui All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility