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參數資料
| 型號： | AD815 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | High Output Current Differential Driver(高輸出電流差分驅動器) |
| 中文描述： | 高輸出電流差動驅動器（高輸出電流差分驅動器） |
| 文件頁數： | 14/16頁 |
| 文件大小： | 320K |
| 代理商： | AD815 |
AD815
REV. A
–14–
6
4
5
8
10
7
–15V
R
A
499
9
11
0.1μF
10μF
0.1μF
10μF
AMP1
AMP2
V
IN
+15V
V
CC
R
F
499
~
20pF
R
B
499
R
A
499
R
B
499
V
CC
250
(50
)
(OPTIONAL)
R
I
499
50
50
(OPTIONAL)
100
1/2
AD815
1/2
AD815
Figure 53. Single-Ended to Differential Driver
If a resistor (R
F
) is connected from the output of Amp 2 to the
+ input of Amp 1, negative feedback is provided which closes
the loop. An input resistor (R
I
) will make the circuit look like a
conventional inverting op amp configuration with differential
outputs. T he inverting input to this dual output op amp be-
comes Pin 4, the positive input of Amp 1.
T he gain of this circuit from input to either output will be
±
R
F
/
R
I
. Or the single-ended to differential gain will be 2
×
R
F
/R
I.
T he differential outputs can be applied to the primary of a
transformer. If each output can swing
±
10 V, the effective swing
on the transformer primary is 40 V p-p. T he optional capacitor
can be added to prevent any dc current in the transformer due
to dc offsets at the output of the AD815.
T welve Channel Video Distribution Amplifier
T he high current of the AD815 enables it to drive up to twelve
standard 75
reverse terminated video loads. Figure 54 is a
schematic of such an application.
T he input video signal is terminated in 75
and applied to the
noninverting inputs of both amplifiers of the AD815. Each
amplifier is configured for a gain of two to compensate for the
divide-by-two feature of each cable termination. Six separate
75
resistors for each amplifier output are used for the cable
back termination. In this manner, all cables are relatively
independent of each other and small disturbances on any cable
will not have an effect on the other cables.
When driving six video cables in this fashion, the load seen by
each amplifier output is resistive and is equal to 150
/6 or
25
. T he differential gain is 0.05% and the differential phase
is 0.45
°
.
+15V
6
8
7
–15V
9
11
0.1μF
10μF
10
5
4
100
100
75
VIDEO IN
499
0.1μF
10μF
499
499
499
12
×
75
12
×
VIDEO OUT
TO 75
CABLES
AD815
4
5
1/2
AD815
C2
0.1μF
C3
10μF
TP2
+15V
R10
R21
R18
R12
R9
J3
J6
R13
C10
0.1μF
C11
10μF
9
TP1
–15V
U1
R11
C13
R16
R15
U1
R6
R17
TP4
TP3
+15V
–15V
B2
B1
B3
C9
JP1
R20
J4
1
2
3
T1
J5
C1
R3
R7
R2
R4
J1
R5
R19
R1
R14
R8
2
1
10
9
R22
4
7
5
6
11
12
8
8
6
1
2
3
J2
J7
1
2
3
C6
11
10
7
1/2
AD815
Figure 55. AD815 Evaluation Board Schematic
Figure 54. AD815 Video Distribution Amp Driving
12 Video Cables
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PDF描述 |
|---|---|
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| AD8170AN | 250 MHz, 10 ns Switching Multiplexers w/Amplifier |
| AD8170AR | 250 MHz, 10 ns Switching Multiplexers w/Amplifier |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD815_05 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Output Current Differential Driver |
| AD8150 | 制造商:AD 制造商全稱:Analog Devices 功能描述:33 x 17, 1.5 Gbps Digital Crosspoint Switch |
| AD8150AST | 制造商:Rochester Electronics LLC 功能描述:LQFP 1.5GBPS 33X17 DIGITAL CROSSPOINT SW - Tape and Reel 制造商:Analog Devices 功能描述:IC SWITCH CROSSPOINT |
| AD8150ASTZ | 功能描述:IC CROSSPOINT SWIT 33X17 184LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:XStream™ 應用說明:Ultrasound Imaging Systems Application Note 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:250 系列:- 功能:開關 電路:單刀單擲 導通狀態電阻:48 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電流 - 電源:5µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應商設備封裝:48-LQFP（7x7） 包裝:托盤 |
| AD8150ASTZ | 制造商:Analog Devices 功能描述:IC DIGITAL CROSSPOINT SWITCH |
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