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AD8367-EVAL PDF预览

AD8367-EVAL

更新时间: 2024-01-19 00:44:07
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 604K
描述
500 MHz, Linear-in-dB VGA with AGC Detector

AD8367-EVAL 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:TSSOP
包装说明:TSSOP,针数:14
Reach Compliance Code:unknown风险等级:5.58
模拟集成电路 - 其他类型:ANALOG CIRCUITJESD-30 代码:R-PDSO-G14
JESD-609代码:e3长度:5 mm
湿度敏感等级:1功能数量:1
端子数量:14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:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
座面最大高度:1.2 mm最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):2.7 V标称供电电压 (Vsup):5 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:MATTE TIN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:4.4 mm
Base Number Matches:1

AD8367-EVAL 数据手册

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500 MHz, Linear-in-dB VGA  
with AGC Detector  
a
AD8367  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
Broad Range Analog Variable Gain  
–2.5 dB to +42.5 dB  
VPSI  
VPSO  
ENBL  
3 dB Cutoff Frequency of 500 MHz  
Gain Up and Gain Down Modes  
Linear-in-dB, Scaled 20 mV/dB  
Resistive Ground Referenced Input  
Nominal ZIN 
؍
 200 ⍀  
ICOM  
INPT  
AD8367  
ICOM  
DECL  
BIAS  
9-STAGE ATTENUATOR BY 5dB  
GAUSSIAN INTERPOLATOR  
HPFL  
VOUT  
g
m
CELLS  
On-Chip Square-Law Detector  
Single-Supply Operation: 2.7 V to 5.5 V  
SQUARE  
LAW  
DETECTOR  
APPLICATIONS  
Cellular Base Station  
Broadband Access  
ICOM  
OCOM  
Power Amplifier Control Loops  
Complete, Linear IF AGC Amplifiers  
High-Speed Data I/O  
MODE  
GAIN  
DETO  
GENERAL DESCRIPTION  
The analog gain-control interface is very simple to use. It is  
The AD8367 is a high-performance 45 dB variable gain ampli-  
fier with linear-in-dB gain control for use from low frequencies  
up to several hundred megahertz. The range, flatness, and accu-  
racy of the gain response are achieved using Analog Devices  
X-AMP® architecture, the most recent in a series of powerful  
proprietary concepts for variable gain applications, which far  
surpasses what can be achieved using competing techniques.  
scaled at 20 mV/dB, and the control voltage, VGAIN, runs from  
50 mV at 2.5 dB to 950 mV at +42.5 dB. In the inverse-gain  
mode of operation, selected by a simple pin-strap, the gain  
decreases from +42.5 dB at VGAIN = 50 mV to 2.5 dB at  
VGAIN = 950 mV. This inverse mode is needed in AGC applications,  
which are supported by the integrated square-law detector,  
whose set point is chosen to level the output to 354 mV rms,  
regardless of the waveshape. A single external capacitor sets up  
the loop averaging time.  
The input is applied to a 200 resistive ladder network, having  
nine sections each of 5 dB loss, for a total attenuation of 45 dB.  
At maximum gain, the first tap is selected; at progressively lower  
gains, the tap moves smoothly and continuously toward higher  
attenuation values. The attenuator is followed by a 42.5 dB  
fixed gain feedback amplifieressentially an operational ampli-  
fier with a gain bandwidth product of 100 GHzand is very  
linear, even at high frequencies. The output third order intercept is  
+20 dBV at 100 MHz (+27 dBm re 200 ), measured at an  
output level of 1 V p-p with VS = 5 V.  
The AD8367 may be powered on or off by a voltage applied to  
the ENBL pin. When this voltage is at a logic LO, the total power  
dissipation drops to the milliwatt range. For a logic HI, the chip  
powers-up rapidly to its normal quiescent current of 26 mA at  
25°C. The AD8367 is available in a 14-lead TSSOP package for  
the industrial temperature range of 40°C to +85°C.  
X-AMP is a registered trademark of Analog Devices, Inc.  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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  
www.analog.com  
© Analog Devices, Inc., 2001  

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