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AD8344ACPZ-WP Folha de dados(PDF) 1 Page - Analog Devices |
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AD8344ACPZ-WP Folha de dados(HTML) 1 Page - Analog Devices |
1 / 20 page Active Receive Mixer 400 MHz to 1.2 GHz AD8344 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Broadband RF port: 400 MHz to 1.2 GHz Conversion gain: 4.5 dB Noise figure: 10.5 dB Input IP3: 24 dBm Input P1dB: 8.5 dBm LO drive: 0 dBm External control of mixer bias for low power operation Single-ended, 50 Ω RF and LO input ports Single-supply operation: 5 V @ 84 mA Power-down mode Exposed paddle LFCSP: 3 mm × 3 mm APPLICATIONS Cellular base station receivers ISM receivers Radio links RF Instrumentation FUNCTIONAL BLOCK DIAGRAM 1 2 3 4 12 11 10 9 COMM 8 IFOP 7 IFOM 6 COMM 5 COMM 13 RFCM 14 RFIN 15 VPMX 16 BIAS Figure 1. GENERAL DESCRIPTION The AD8344 is a high performance, broadband active mixer. It is well suited for demanding receive-channel applications that require wide bandwidth on all ports and very low intermodula- tion distortion and noise figure. The AD8344 provides a typical conversion gain of 4.5 dB at 890 MHz. The integrated LO driver supports a 50 Ω input impedance with a low LO drive level, helping to minimize external component count. The single-ended 50 Ω broadband RF port allows for easy interfacing to both active devices and passive filters. The RF input accepts input signals as large as 1.7 V p-p or 8.5 dBm (re: 50 Ω) at P1dB. The open-collector differential outputs provide excellent balance and can be used with a differential filter or IF amplifier, such as the AD8369 or AD8351. These outputs may also be con- verted to a single-ended signal through the use of a matching network or a transformer (balun). When centered on the VPOS supply voltage, each of the differential outputs may swing 2.5 V p-p. The AD8344 is fabricated on an Analog Devices proprietary, high performance SiGe IC process. The AD8344 is available in a 16-lead LFCSP package. It operates over a −40°C to +85°C temperature range. An evaluation board is also available. |
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