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AD8315ACPZ-REEL7 PDF预览

AD8315ACPZ-REEL7

更新时间: 2024-01-26 09:55:20
品牌 Logo 应用领域
亚德诺 - ADI 电信集成电路电信电路控制器GSM
页数 文件大小 规格书
24页 561K
描述
50 dB GSM PA Controller

AD8315ACPZ-REEL7 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SON
包装说明:HVSON,针数:8
Reach Compliance Code:unknown风险等级:5.29
JESD-30 代码:R-XDSO-N8JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-30 °C
封装主体材料:UNSPECIFIED封装代码:HVSON
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260认证状态:COMMERCIAL
座面最大高度:1 mm标称供电电压:2.7 V
表面贴装:YES电信集成电路类型:TELECOM CIRCUIT
温度等级:OTHER端子面层:MATTE TIN
端子形式:NO LEAD端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:2 mm

AD8315ACPZ-REEL7 数据手册

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50 dB GSM PA Controller  
AD8315  
Its high sensitivity allows control at low signal levels, thus  
reducing the amount of power that needs to be coupled to  
the detector.  
FEATURES  
Complete RF detector/controller function  
>50 dB range at 0.9 GHz (−49 dBm to +2 dBm, re 50 Ω)  
Accurate scaling from 0.1 GHz to 2.5 GHz  
Temperature-stable linear-in-dB response  
Log slope of 23 mV/dB, intercept at −60 dBm at 0.9 GHz  
True integration function in control loop  
Low power: 20 mW at 2.7 V, 38 mW at 5 V  
Power-down to 10.8 μW  
For convenience, the signal is internally ac-coupled. This  
high-pass coupling, with a corner at approximately 0.016 GHz,  
determines the lowest operating frequency. Therefore, the  
source can be dc grounded.  
The AD8315 provides a voltage output, VAPC, that has the  
voltage range and current drive to directly connect to most  
handset power amplifiers’ gain control pin. VAPC can swing  
from 250 mV above ground to within 200 mV below the supply  
voltage. Load currents of up to 6 mA can be supported.  
APPLICATIONS  
Single, dual, and triple band mobile handset (GSM, DCS, EDGE)  
Transmitter power control  
The setpoint control input is applied to the VSET pin and has  
an operating range of 0.25 V to 1.4 V. The associated circuit  
determines the slope and intercept of the linear-in-dB  
measurement system; these are nominally 23 mV/dB and  
−60 dBm for a 50 Ω termination (−73 dBV) at 0.9 GHz.  
Further simplifying the application of the AD8315, the input  
resistance of the setpoint interface is over 100 MΩ, and the bias  
current is typically 0.5 μA.  
GENERAL DESCRIPTION  
The AD8315 is a complete low cost subsystem for the precise  
control of RF power amplifiers operating in the frequency range  
0.1 GHz to 2.5 GHz and over a typical dynamic range of 50 dB.  
It is intended for use in cellular handsets and other battery-  
operated wireless devices. The log amp technique provides a  
much wider measurement range and better accuracy than  
controllers using diode detectors. In particular, its temperature  
stability is excellent over a specified range of −30°C to +85°C.  
The AD8315 is available in MSOP and LFCSP packages and  
consumes 8.5 mA from a 2.7 V to 5.5 V supply. When powered  
down, the sleep current is 4 μA.  
FUNCTIONAL BLOCK DIAGRAM  
VPOS  
ENBL  
LOW NOISE  
BAND GAP  
REFERENCE  
OUTPUT  
ENABLE  
DELAY  
LOW NOISE  
GAIN BIAS  
VAPC  
×1.35  
HI-Z  
DET  
DET  
DET  
DET  
DET  
LOW NOISE (25nV/Hz)  
RAIL-TO-RAIL BUFFER  
RFIN  
FLTR  
VSET  
10dB  
10dB  
10dB  
10dB  
V-I  
23mV/dB  
250mV TO  
1.4V = 50dB  
OFFSET  
COMP’N  
INTERCEPT  
POSITIONING  
COMM  
Figure 1.  
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. 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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 

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