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AD8320ARP PDF预览

AD8320ARP

更新时间: 2024-01-23 19:27:33
品牌 Logo 应用领域
亚德诺 - ADI 驱动器电信集成电路电信电路光电二极管
页数 文件大小 规格书
20页 584K
描述
Serial Digital Controlled Variable Gain Line Driver

AD8320ARP 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.67
Is Samacsys:NJESD-30 代码:R-PDSO-G20
JESD-609代码:e3湿度敏感等级:5
功能数量:1端子数量:20
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:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:Not Qualified
最大压摆率:105 mA标称供电电压:12 V
表面贴装:YES技术:BIPOLAR
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
端子位置:DUAL处于峰值回流温度下的最长时间:40
Base Number Matches:1

AD8320ARP 数据手册

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Serial Digital Controlled  
Variable Gain Line Driver  
a
AD8320  
FEATURES  
8-Bit Serial Gain Control  
FUNCTIO NAL BLO CK D IAGRAM  
V/ V/ LSB Linear Gain Response  
36 dB Gain Range  
؎0.20 dB Gain Accuracy  
VCC  
GND  
PWR AMP  
AD8320  
REFERENCE  
Upper Bandw idth: 150 MHz  
VOUT  
22 dBm 1 dB Com pression Point (75 )  
Drives Low Distortion Signals into 75 Load:  
–57 dBc SFDR at 42 MHz and 12 dBm Out  
–46 dBc SFDR at 42 MHz and 18 dBm Out  
Single Supply Operation from 5 V to 12 V  
Maintains 75 Output Im pedance  
Pow er-Up and Pow er-Dow n Condition  
Supports SPI Input Control Standard  
VREF  
VIN  
REVERSE  
AMP  
INV.  
BUF.  
ATTENUATOR CORE  
DATA LATCH  
POWER-  
DOWN/  
SWITCH  
INTER.  
PD  
DATA SHIFT REGISTER  
APPLICATIONS  
Coaxial Cable Driver  
DATEN CLK  
SDATA  
HFC Cable Telephony System s  
HFC High Speed Data Modem s  
Interactive Set-Top Boxes  
PC Plug-In Modem s  
Interfaces w ith AD9853 I2C Controlled Digital Modulator  
High Perform ance Digitally Controlled Variable Gain  
Block  
D ESCRIP TIO N  
results in low glitch output during power-down and power-up  
transitions, eliminating the need for an external switch.  
T he AD8320 is a digitally controlled variable gain amplifier  
optimized for coaxial line driving applications. An 8-bit serial  
word determines the desired output gain over a 36 dB range  
(256 gain levels). T he AD8320 provides linear gain response.  
T he AD8320 is packaged in a 20-lead SOIC and operates from  
a single +5 V through +12 V supply and has an operational  
temperature range of –40°C to +85°C.  
T he AD8320 is made up of a digitally controlled variable at-  
tenuator of 0 dB to –36 dB, which is preceded by a low noise,  
fixed gain buffer and followed by a low distortion high power  
amplifier. T he AD8320 has a 220 input impedance and ac-  
cepts a single-ended input signal with a specified analog input  
level of up to 0.310 V p-p. T he output is specified for driving a  
75 load, such as coaxial cable, although the AD8320 is ca-  
pable of driving other loads. Distortion performance of –57 dBc  
is achieved with an output level up to 12 dBm (3.1 V p-p) at  
42 MHz, while –46 dBc distortion is achieved with an output  
level up to 18 dBm (6.2 V p-p).  
؊20  
؊30  
P
= 18dBm  
O
؊40  
؊50  
؊60  
P
= 12dBm  
O
P
= 8dBm  
O
A key performance and cost advantage of the AD8320 results  
from the ability to maintain a constant 75 output impedance  
during power-up and power-down conditions. T his eliminates  
the need for external 75 back-termination, resulting in twice  
the effective output voltage when compared to a standard opera-  
tional amplifier. Additionally, the on-chip 75 termination  
؊70  
؊80  
P
= 4dBm  
O
10  
FREQUENCY – MHz  
100  
1
Figure 1. Worst Harm onic Distortion vs. Frequency for  
Various Output Levels at VCC = 12 V  
REV. 0  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 781/ 329-4700  
Fax: 781/ 326-8703  
World Wide Web Site: http:/ / w w w .analog.com  
© Analog Devices, Inc., 1998  

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