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AD8314ACPZ PDF预览

AD8314ACPZ

更新时间: 2024-01-04 04:10:45
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
20页 492K
描述
100 MHz to 2.7 GHz, 45 dB RF Detector/Controller

AD8314ACPZ 技术参数

是否无铅: 含铅是否Rohs认证: 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:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.01
JESD-30 代码:S-PDSO-G8JESD-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:-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):260认证状态:Not Qualified
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:Matte Tin (Sn)
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:40
宽度:3 mmBase Number Matches:1

AD8314ACPZ 数据手册

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100 MHz to 2.7 GHz, 45 dB  
RF Detector/Controller  
AD8314  
For convenience, the signal is internally ac-coupled, using a  
5 pF capacitor to a load of 3 kΩ in shunt with 2 pF. This high-  
pass coupling, with a corner at approximately 16 MHz,  
determines the lowest operating frequency. Therefore, the  
source can be dc grounded.  
FEATURES  
Complete RF detector/controller function  
Typical range:−58 dBV to −13 dBV  
−45 dBm to 0 dBm, re 50 Ω  
Frequency response from 100 MHz to 2.7 GHz  
Temperature-stable linear-in-dB response  
Accurate to 2.7 GHz  
Rapid response: 70 ns to a 10 dB step  
Low power: 12 mW at 2.7 V  
Power down to 20 μA  
The AD8314 provides two voltage outputs. The first, 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 Applications section  
for information on this mode. A capacitor can 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.  
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 can be added to extend the  
averaging time. Consult the Applications section for  
information on this mode.  
GENERAL DESCRIPTION  
The AD8314 is a complete low cost subsystem for the  
measurement and control of RF signals in the frequency range  
of 100 MHz to 2.7 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 −40°C to +85°C.  
The AD8314 is available in 8-lead MSOP and 8-lead LFCSP  
packages and consumes 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 Ω.  
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  
COMPENSATION  
AD8314  
COMM  
(PADDLE)  
Figure 1.  
Rev. B  
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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