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ADF7020 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADF7020 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 5 page Circuit Note CN-0164 Circuit Designs Using Analog Devices Products Apply these product pairings quickly and with confidence. For more information and/or support call 1-800-AnalogD (1-800-262-5643) or visit www.analog.com/circuit. Devices Connected/Referenced ADF7020 ISM Band, FSK/ASK Transceiver ADuC7060 Low Power, ARM7TDMI, Precision Analog Microcontroller ADP121 150 mA, Low Quiescent Current, CMOS Linear Regulator Low Power, Long Range, ISM Wireless Measuring Node Rev. A Circuitsfromthe Lab™circuitsfromAnalog Deviceshave been designedandbuiltbyAnalogDevices engineers. Standard engineering practices have been employed in the design and construction of eachcircuit,andtheirfunctionandperformancehavebeentestedandverifiedinalabenvironmentat room temperature. However, you are solely responsible for testing the circuit and determining its suitabilityandapplicabilityforyouruseandapplication.Accordingly,innoeventshallAnalogDevices be liable for direct, indirect, special, incidental, consequential or punitive damages due to any cause whatsoeverconnectedtotheuseofanyCircuitsfromtheLabcircuits. (Continuedonlastpage) One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. CIRCUIT FUNCTION AND BENEFITS Ideally, a wireless measurement node is low power, has good range, and is easily interfaced to different sensors. Through the combination of three Analog Devices, Inc., parts, an intelligent measurement node with an average current consumption of <70 µA, a range of almost 1 km (in free space), and a data rate of one transmission/minute can be achieved, while also main- taining a 16-bit ADC performance (see Figure 1). This makes the circuit suitable for battery power and such applications as automation and remote sensing. The system consists of a low power temperature measurement node that wakes once a minute, measures temperature, transmits this measurement at 10 kbps to the base node, and then returns to sleep. The base node continuously listens for a package from the measurement node and sends this information to the PC via the UART for display in HyperTerminal. ADuC7060 ADF7020 PGA ADC ADP121 3V 100Ω PT RTD 100Ω 0.1% 55µA IN DEEP SLEEP MODE ID = 1µA WHEN CE = 0V P0.6 P0.5 P2.0 P2.1 DATA CLK INT/LOCK DATA I/O OUTGOING DATA INCOMING DATA P0.4 P1.2 P1.3 SREAD SLE SDATA P0.2 SCLK P0.0 CE VCC SERIAL CONFIGURATION BUS VCC = 2.5V SERIAL DATA BUS BAT54C 4.7kΩ PROGRAMMABLE CURRENT SOURCE Figure 1. Low Power, Long Range, ISM Wireless Measurement Node (Simplified Schematic: All Connections and Decoupling Not Shown) |
Số phần tương tự - ADF7020 |
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Mô tả tương tự - ADF7020 |
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