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参数资料
| 型号： | AD8326 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | High Output Power Programmable CATV Line Driver |
| 中文描述： | 高输出功率可编程有线电视线路驱动器 |
| 文件页数： | 11/24页 |
| 文件大小： | 475K |
| 代理商： | AD8326 |
REV. 0
AD8326
–11–
Input Bias, Impedance, and T ermination
The V
IN
+ and V
IN
–
inputs have a dc bias level of approxi-
mately 1.47 V below V
CC
/2, therefore the input signal should
be ac-coupled using 0.1
μ
F capacitors as seen in the typical
application circuit (see Figure 5).
The differential input impedance of the AD8326 is approxi-
mately 1600
, while the single-ended input is 800
.
Single-E nded Inverting Input
When operating the AD8326 in a single-ended input mode V
IN
+
and V
IN
–
should be terminated as illustrated in Figure 6. On the
AD8326 evaluation boards, this termination method requires the
removal of R12, R13, R14, R16, R17, and R18. Install a 0
jumper at R15, an 82.5
resistor at R10 for a 75
system, and a
39.2
resistor at R11 to balance the inputs of the AD8326
evaluation board (Figure 11). Other input impedance configura-
tions may be calculated using the equations in Figure 6.
AD8326
+
R10
R11
–
Z
IN
= R10||800
R11 = Z
IN
||R10
V
IN
–
Figure 6. Single-Ended Input Impedance
The inverting and noninverting inputs of the AD8326 must be
balanced for all input configurations.
Differential Input from Single-E nded Source
The default configuration of the evaluation board implements a
differential signal drive from a single-ended signal source. A
Toko 1:1 transformer is included on the board for this purpose
(T3). Enabling the evaluation board for single to differential
input conversion requires R15
–
R17 to be removed, and 0
jumpers must be installed on the placeholders for R13, R14, and
R18. For a 75
input impedance, R12 should be 78.7
. Refer
to Figure 11 for evaluation board schematic. In this configuration,
the input signal must be applied to V
IN
–
. Other input imped-
ances may be calculated using the equation in Figure 7.
V
IN
–
AD8326
DESIRED IMPEDANCE = R12||1600
R12
Figure 7. Differential Signal from Single-Ended Source
Differential Signal Source
The AD8326 evaluation board is also capable of accepting a
differential input signal. This requires the installation of a 165
resistor in R12, the removal of R13
–
R14, R17
–
R18, and the
installation of 0
jumpers for R15
–
R16. This configuration
results in a differential input impedance of 150
. Other differ-
ential input impedance configurations may be calculated with
the equation in Figure 8.
V
IN
+
AD8326
V
IN
–
R12
DESIRED IMPEDANCE = R12||1600
Figure 8. Differential Input
DATEN
SDATA
CLK
GND1
V
CC
TXEN
SLEEP
GND
V
CC
V
CC
V
EE
GND
V
EE
V
OUT
–
GND
V
CC
V
IN
–
V
IN+
V
EE
V
CC
V
EE
BYP
V
CC
V
CC
V
EE
GND
V
EE
V
OUT+
AD8326
V
EE
TXEN
SLEEP
DATEN
SDATA
CLK
10 F
0.1 F
0.1 F
0.1 F
0.1 F
TOKO 617DB-A0070
TO DIPLEXER
Z
IN
= 75
0.1 F
0.1 F
0.1 F
0.1 F
0.1 F
0.1 F
165
V
IN
–
V
IN+
Z
IN
= 150
10 F
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0.1 F
0.1 F
0.1 F
0.1 F
0.1 F
0.1 F
Figure 5. Typical Applications Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8326ARE | 制造商:Analog Devices 功能描述:SP Amp Line Driver Amp Single 制造商:Rochester Electronics LLC 功能描述:TSSOP HIGH OUTPUT POWER CATV LINE DRIVER - Bulk |
| AD8326ARE-EVAL | 制造商:Analog Devices 功能描述:Evaluation Board For AD8326 High Output Power Programmable CATV Line Driver |
| AD8326ARE-REEL | 制造商:Analog Devices 功能描述:SP Amp Line Driver Amp Single 制造商:Analog Devices 功能描述:SP Amp Line Driver Amp Single ±5.25V/12.6V 28-Pin TSSOP EP T/R 制造商:Rochester Electronics LLC 功能描述:TSSOP HIGH OUTPUT POWER CATV LINE DRIVER - Tape and Reel |
| AD8326AREZ | 功能描述:IC LINE DVR CATV PROG 28TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| AD8326ARP | 制造商:Analog Devices 功能描述:SP AMP LINE DRVR AMP SGL 5.25V/12.6V 28PSOP-II - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:PSOP HIGH OUTPUT POWER CATV LINE DRIVER - Bulk |
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