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AD8376 数据表(PDF) 1 Page - Analog Devices |
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AD8376 数据表(HTML) 1 Page - Analog Devices |
1 / 4 page Circuit Note CN-0140 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 ADL5356 1.2 GHz to 2.5 GHz, Dual-Balanced Mixer, LO Buffer, IF Amplifier, and RF Balun AD8376 Ultralow Distortion IF Dual VGA AD9258 14-Bit, 125 MSPS, 1.8 V Dual ADC AD9517-4 12-Output Clock Generator with Integrated 1.6 GHz VCO High Performance, Dual Channel IF Sampling Receiver Rev. 0 “Circuits from the Lab” from Analog Devices have been designed and built by Analog Devices engineers. Standard engineering practices have been employed in the design and construction of eachcircuit,andtheirfunctionandperformance havebeentestedandverifiedinalabenvironment atroomtemperature.However,youaresolelyresponsible fortestingthe circuit anddetermining its suitability and applicability for your use and application. Accordingly, in no event shall Analog Devices be liable for direct, indirect, special, incidental, consequential or punitive damages due to anycausewhatsoeverconnectedtotheuseofany“CircuitfromtheLab”. (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 ©2010 Analog Devices, Inc. All rights reserved. CIRCUIT FUNCTION AND BENEFITS This circuit is a high performance, dual channel IF sampling receiver, also called a “main” and “diversity” receiver in base station terminology. The downconverting receiver uses a single IF frequency of 153.6 MHz and includes a dual downconverting mixer, digitally controlled dual VGA, dual ADC, and clock synthesizer. The circuit takes an incoming RF waveform and outputs a dual 14-bit resolution digital data stream. It is optimized for high frequency IF sampling and provides exceptional spurious-free dynamic range (SFDR) performance of 79.61 dBc with a sampling rate of 122.88 MSPS at the high gain setting. CIRCUIT DESCRIPTION This circuit includes the RF front end, as well as the IF sampling receiver. It is composed of a dual balanced mixer, broadband IF SAW filter, digitally controlled dual VGA, and dual ADC. The circuit also includes a synthesizer, which generates the ADC sampling clock. The ADL5356 dual balanced mixer is designed to downconvert radio frequencies (RF) primarily between 1200 MHz and 2500 MHz to lower intermediate frequencies (IF) between 30 MHz and 450 MHz. 5 18pF 18pF 18pF 5V 5V 5V 18pF 58nH 72nH 470pF 470pF 0.1µF 0.1µF 57.6 Ω 470pF 100pF 1.5k Ω 430 Ω 200 Ω 200 Ω 10nF 50 Ω 0.1µF 0.1µF 0.1µF 0.22µF REFIN OUT0 CP BYPASS LF 1/2 AD8376 309 Ω 3.3pF A0 TO A4 20pF 1µH 1µH 330nH 330nH 330nH 330nH CML 165 Ω 165 Ω CML CLK+ 122.88MHz CLK– 56nH 33 Ω 33 Ω 1/2 AD9258 5V 1.21k Ω GM IN CT ON OP LG 330nH 330nH 390 Ω 50 Ω LO IN 1796.4MHz REF IN 30.72MHz 5V 5V LOSW LOI2 22pF 22pF 50 Ω 10nF 10pF RF IN 1950MHz 1/2 ADL5356 153.6MHz FC = 153.6MHz BW = 20MHz EPCOS B5206 SAW FILTER 1.8V AVDD 3V 1.8V DVDD 14 1:1 AD9517-4 REFIN OUT0 NOTES 1. ALL PINS AND CONNECTIONS TO ADL5356, AD8376, AD9258 AND AD9417 NOT SHOWN. CONSULT PRODUCT DATA SHEETS FOR DETAILED INFORMATION. Figure 1. Broadband Dual Channel IF Sampling Receiver (Simplified Schematic: Only One-Half of the Receiver Is Shown. All Connections and Decoupling Not Shown) |
类似零件编号 - AD8376 |
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类似说明 - AD8376 |
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