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AD5933 データシート(PDF) 1 Page - Analog Devices |
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AD5933 データシート(HTML) 1 Page - Analog Devices |
1 / 6 page Circuit Note CN-0217 Circuits from the Lab™ reference circuits are engineered and tested for quick and easysystemintegrationto helpsolve today’s analog, mixed-signal, and RF design challenges. For more informationand/orsupport,visitwww.analog.com/CN0217. Devices Connected/Referenced AD5933 1 MSPS, 12-Bit Impedance Converter, Network Analyzer AD5934 250 kSPS, 12-Bit Impedance Converter, Network Analyzer AD8606 Precision, Low Noise, Dual CMOS Op Amp High Accuracy Impedance Measurements Using 12-Bit Impedance Converters 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 ©2011–2013 Analog Devices, Inc. All rights reserved. EVALUATION AND DESIGN SUPPORT Circuit Evaluation Boards AD5933 Evaluation Board (EVAL-AD5933EBZ) Design and Integration Files Schematics, Layout Files, Bill of Materials CIRCUIT FUNCTION AND BENEFITS The AD5933 and AD5934 are high precision impedance converter system solutions that combine an on-chip programmable frequency generator with a 12-bit, 1 MSPS (AD5933) or 250 kSPS (AD5934) analog-to-digital converter (ADC). The tunable frequency generator allows an external complex impedance to be excited with a known frequency. The circuit shown in Figure 1 yields accurate impedance measurements extending from the low ohm range to several hundred kΩ, and it also optimizes the overall accuracy of the AD5933/AD5934. 50kΩ 50kΩ 50kΩ 50kΩ RFB 20k Ω 20k Ω 47nF ZUNKNOWN VDD VDD VDD + + − − A1 A2 A1, A2 ARE ½ AD8606 1.48V 1.98V p-p VDD/2 1.98V p-p VDD/2 DAC SCL SDA DVDD AVDD MCLK AGND DGND ROUT VOUT AD5933/AD5934 RFB VIN 1024-POINT DFT I2C INTERFACE IMAGINARY REGISTER REAL REGISTER OSCILLATOR DDS CORE (27 BITS) TEMPERATURE SENSOR TRANSMIT SIDE OUTPUT AMPLIFIER ADC (12 BITS) LPF GAIN VDD VDD I-V Figure 1. Optimized Signal Chain for Impedance Measurement Accuracy (Simplified Schematic, All Connections and Decoupling Not Shown) |
同様の部品番号 - AD5933 |
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同様の説明 - AD5933 |
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