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AD8316ACP-REEL7 数据表(PDF) 1 Page - Analog Devices |
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AD8316ACP-REEL7 数据表(HTML) 1 Page - Analog Devices |
1 / 20 page REV. C 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. 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. AD8316 Dual Output GSM PA Controller FEATURES Complete RF Detector/Controller Function Selectable Dual Outputs 49 dB Range at 0.9 GHz (–47.6 dBm to +1.5 dBm re 50 ) Accurate Scaling from 0.1 GHz to 2.5 GHz Temperature-Stable Linear-in-dB Response Log Slope of 22 mV/dB True Integration Function in Control Loop Low Power: 23 mW at 2.7 V Power-Down to 11 W APPLICATIONS Single-Band, Dual-Band, and Triband Mobile Handsets (GSM, DCS, PCS, EDGE) Wireless Terminal Devices Transmitter Power Control FUNCTIONAL BLOCK DIAGRAM OUT2 OUT1 FLT1 VSET FLT2 10dB COMM OFFSET COMPENSATION RFIN DET DET DET DET DET INTERCEPT POSITIONING LOW NOISE GAIN BIAS LOW NOISE BAND GAP REFERENCE OUTPUT ENABLE DELAY ENBL VPOS BSEL HI-Z 1.35 HI-Z V–I 10dB 10dB 10dB 1.35 GENERAL DESCRIPTION The AD8316 is a complete, low cost subsystem for the precise control of dual RF power amplifiers (PAs) operating in the frequency range 0.1 GHz to 2.5 GHz and over a typical dynamic range of 50 dB. The device is a dual-output version of the AD8315 and intended for use in dual-band or triband cellular handsets and other battery-operated wireless devices where a separate power control signal is required for each band. The logarithmic amplifier technique provides a much wider measurement range and better accuracy than is possible using controllers based on diode detectors. In particular, multiband and multimode cellu- lar designs can benefit from the temperature-stable (–30 °C to +85 °C) operation over all cellular telephony frequencies. Its high sensitivity allows control at low input signal levels, thus reducing the amount of power that needs to be coupled to the detector. The selected output, OUT1 or OUT2, has the voltage range and current drive to directly connect to the gain control pin of most handset power amplifiers; the deselected output is pulled low to ensure that the inactive PA remains off. Each output has a dedicated integrating filter capacitor that allows separate control loop settings for each PA. OUT1 and OUT2 can swing from 125 mV above ground to within 100 mV below the supply voltage. Load currents of up to 12 mA can be supported. The setpoint control input applied to pin VSET has an operating range of 0.25 V to 1.4 V. The input resistance of the setpoint interface is over 100 M Ω, and the bias current is typically 0.5 µA. The AD8316 is available in 10-lead MSOP and 16-lead LFCSP packages and consumes 8.5 mA from a 2.7 V to 5.5 V supply. When it is powered down, the sleep current is 4 µA. |
类似零件编号 - AD8316ACP-REEL7 |
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类似说明 - AD8316ACP-REEL7 |
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