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AD8314ARM-REEL7 PDF预览

AD8314ARM-REEL7

更新时间: 2024-02-13 23:46:28
品牌 Logo 应用领域
亚德诺 - ADI 电信集成电路电信电路光电二极管控制器
页数 文件大小 规格书
16页 277K
描述
100 MHz-2500 MHz 45 dB RF Detector/Controller

AD8314ARM-REEL7 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:TSSOP
包装说明:TSSOP,针数:8
Reach Compliance Code:unknown风险等级:5.66
JESD-30 代码:S-PDSO-G8JESD-609代码:e0
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:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):240认证状态:COMMERCIAL
座面最大高度:1.1 mm标称供电电压:3 V
表面贴装:YES电信集成电路类型:TELECOM CIRCUIT
温度等级:INDUSTRIAL端子面层:TIN LEAD
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3 mmBase Number Matches:1

AD8314ARM-REEL7 数据手册

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100 MHz–2500 MHz 45 dB  
RF Detector/Controller  
a
AD8314  
FEATURES  
For convenience, the signal is internally ac-coupled, using a 5 pF  
capacitor to a load of 3 kin shunt with 2 pF. This high-pass  
coupling, with a corner at 16 MHz, determines the lowest oper-  
ating frequency. Thus, the source may be dc-grounded.  
Complete RF Detector/Controller Function  
Typical Range –58 dBV to –13 dBV  
–45 dBm to 0 dBm re 50  
Frequency Response from 100 MHz to 2.5 GHz  
Temperature-Stable Linear-in-dB Response  
Accurate to 2.5 GHz  
Rapid Response: 70 ns to a 10 dB Step  
Low Power: 12 mW at 2.7 V  
The AD8314 provides two voltage outputs. The first, called  
V_UP, increases from close to ground to about 1.2 V as the  
input signal level increases from 1.25 mV to 224 mV. This output  
is intended for use in measurement mode. Consult the Appli-  
cations section of this data sheet for information on use in this  
mode. A capacitor may be connected between the V_UP and  
FLTR pins when it is desirable to increase the time interval over  
which averaging of the input waveform occurs.  
Power-Down to 20 A  
APPLICATIONS  
Cellular Handsets (TDMA, CDMA, GSM)  
RSSI and TSSI for Wireless Terminal Devices  
Transmitter Power Measurement and Control  
The second output, V_DN, is an inversion of V_UP, but with  
twice the slope and offset by a fixed amount. This output starts  
at about 2.25 V (provided the supply voltage is 3.3 V) for  
the minimum input and falls to a value close to ground at the  
maximum input. This output is intended for analog control  
loop applications. A setpoint voltage is applied to VSET and  
V_DN is then used to control a VGA or power amplifier. Here  
again, an external filter capacitor may be added to extend the  
averaging time. Consult the Applications section of this data  
sheet for information on use in this mode.  
PRODUCT DESCRIPTION  
The AD8314 is a complete low-cost subsystem for the mea-  
surement and control of RF signals in the frequency range  
0.1 GHz–2.5 GHz, with a typical dynamic range of 45 dB,  
intended for use in a wide variety of cellular handsets and other  
wireless devices. It provides a wider dynamic range and better  
accuracy than possible using discrete diode detectors. In particular,  
its temperature stability is excellent over the full operating range of  
–30°C to +85°C.  
The AD8314 is available in a micro_SOIC package and con-  
sumes 4.5 mA from a 2.7 V to 5.5 V supply. When powered  
down, the typical sleep current is 20 µA.  
Its high sensitivity allows control at low power levels, thus  
reducing the amount of power that needs to be coupled to the  
detector. It is essentially a voltage-responding device, with a  
typical signal range of 1.25 mV to 224 mV rms or –58 dBV to  
–13 dBV. This is equivalent to –45 dBm to 0 dBm re 50 .  
FUNCTIONAL BLOCK DIAGRAM  
FLTR  
V-I  
VSET  
V UP  
I-V  
DET  
DET  
DET  
DET  
DET  
X2  
V DN  
RFIN  
10dB  
10dB  
10dB  
10dB  
VPOS  
ENBL  
BAND-GAP  
REFERENCE  
OFFSET  
COMP'N  
AD8314  
COMM  
(PADDLE)  
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  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  

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