数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

AD8322 数据表(PDF) 1 Page - Analog Devices

部件名 AD8322
功能描述  5 V CATV Line Driver Coarse Step Output Power Control
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8322 数据表(HTML) 1 Page - Analog Devices

  AD8322_15 Datasheet HTML 1Page - Analog Devices AD8322_15 Datasheet HTML 2Page - Analog Devices AD8322_15 Datasheet HTML 3Page - Analog Devices AD8322_15 Datasheet HTML 4Page - Analog Devices AD8322_15 Datasheet HTML 5Page - Analog Devices AD8322_15 Datasheet HTML 6Page - Analog Devices AD8322_15 Datasheet HTML 7Page - Analog Devices AD8322_15 Datasheet HTML 8Page - Analog Devices AD8322_15 Datasheet HTML 9Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 16 page
background image
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.
a
AD8322
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
5 V CATV Line Driver
Coarse Step Output Power Control
FUNCTIONAL BLOCK DIAGRAM
DECODE
SHIFT
REGISTER
DATA LATCH
AD8322
VIN+
VIN–
VOUT+
VOUT–
BUFFER
R1
R2
ATTENUATION
CORE
8
8
8
POWER-DOWN
LOGIC
POWER
AMP
PD
GND (12 PINS)
DATEN
DATA CLK
ZIN (SINGLE) = 210
ZIN (DIFF) = 235
ZOUT DIFF =
75
VCC (7 PINS)
DIFF
OR SINGLE
INPUT
AMP
FEATURES
Supports DOCSIS Standard for Reverse Path
Transmission
Gain Programmable in 6 dB Steps Over a 42 dB
Range
Low Distortion at 60 dBmV Output
–58 dBc SFDR at 21 MHz
–56 dBc SFDR at 42 MHz
Output Noise Level
–46 dBmV in 160 kHz Bandwidth
Maintains 75
Output Impedance
Power-Up and Power-Down Condition
180 MHz Bandwidth
5 V Supply Operation
Supports SPI Interfaces
APPLICATIONS
Gain Programmable Line Driver
DOCSIS-Compliant Data Modems
Interactive Set-Top Boxes
PC Plug-in Modems
General-Purpose Digitally Controlled Variable Gain Block
GENERAL DESCRIPTION
The AD8322 is a low-cost, digitally controlled variable gain ampli-
fier optimized for coaxial line driving applications such as cable
modems that are designed to the MCNS-DOCSIS upstream
standard. An 8-bit serial word determines the desired output
gain over a 42.14 dB range, with gain steps of 6.02 dB/major
carry.
The AD8322 comprises a digitally controlled variable attenuator
of 0 dB to –42.14 dB, which is preceded by a low-noise, fixed-gain
buffer and is followed by a low-distortion, high-power ampli-
fier. The AD8322 accepts a differential or single-ended input
signal. The output is specified for driving a 75
Ω load, such as
coaxial cable.
Distortion performance of –58 dBc is achieved with an output level
up to 60 dBmV at 21 MHz bandwidth. A key performance and
cost advantage of the AD8322 results from the ability to maintain
a constant 75
Ω output impedance during power-up and power-
down conditions. This eliminates the need for external 75
termination resulting in twice the effective output voltage when
compared to a standard operational amplifier.
The AD8322 is packaged in a low-cost 28-lead TSSOP, operates
from a single 5 V supply, and has an operational temperature
range of –40
°C to +85°C.
GAIN CODE – Decimal
1
–55
–60
–65
–70
–75
2
4
8
16
32
64
128
fO = 42MHz
VO = 60dBmV
@ MAX GAIN
HD3
HD2
Figure 1. Harmonic Distortion vs. Gain Control


类似零件编号 - AD8322_15

制造商部件名数据表功能描述
logo
Analog Devices
AD8322-EVAL AD-AD8322-EVAL Datasheet
243Kb / 16P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
AD8322ARU AD-AD8322ARU Datasheet
243Kb / 16P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
AD8322ARU-REEL AD-AD8322ARU-REEL Datasheet
243Kb / 16P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
More results

类似说明 - AD8322_15

制造商部件名数据表功能描述
logo
Analog Devices
AD8322 AD-AD8322 Datasheet
243Kb / 16P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
AD8327 AD-AD8327 Datasheet
307Kb / 20P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
AD8327 AD-AD8327_15 Datasheet
885Kb / 20P
   5 V CATV Line Driver Coarse Step Output Power Control
REV. 0
AD8323 AD-AD8323 Datasheet
277Kb / 16P
   5 V CATV Line Driver Fine Step Output Power Control
REV. 0
AD8325 AD-AD8325 Datasheet
304Kb / 16P
   5 V CATV Line Driver Fine Step Output Power Control
REV. 0
AD8325 AD-AD8325_05 Datasheet
736Kb / 16P
   5 V CATV Line Driver Fine Step Output Power Control
REV. A
AD8323 AD-AD8323_15 Datasheet
715Kb / 16P
   5 V CATV Line Driver Fine Step Output Power Control
REV. 0
AD8326 AD-AD8326 Datasheet
475Kb / 24P
   High Output Power Programmable CATV Line Driver
REV. 0
AD8326 AD-AD8326_15 Datasheet
1Mb / 24P
   High Output Power Programmable CATV Line Driver
REV. 0
AD8321ARZ AD-AD8321ARZ Datasheet
593Kb / 20P
   Gain Programmable CATV Line DRiver
REV. A
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com