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參數資料
| 型號： | AD8133 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Triple Differential Driver With Output Pull-Down |
| 中文描述： | 具有輸出下拉的三路差分驅動器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 479K |
| 代理商： | AD8133 |
Triple Differential Driver
With Output Pull-Down
AD8133
FEATURES
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 that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Tel: 781.329.4700Fax: 781.326.8703
Triple high speed fully differential driver 225 MHz 3 dB large signal bandwidth
Easily drives 1.4 V p-p video signal into source-terminated
100 UTP cable
1600 V/μs slew rate
Fixed internal gain of 2
Internal common-mode feedback network
Output balance error 60 dB @ 50 MHz
Differential input and output
Differential-to-differential or single-ended-to-differential
operation
Adjustable output common-mode voltage
Output pull-down feature for line isolation
Low distortion: 64 dB SFDR @ 10 MHz on 5 V supply,
R
L, dm
= 200
Low offset: 4 mV typical output referred on 5 V supply
Low power: 26 mA @ 5 V for three drivers
Wide supply voltage range: +5 V to ±5 V
Available in space-saving packaging: 4 mm × 4 mm LFCSP
APPLICATIONS
KVM (keyboard-video-mouse) networking
UTP (unshielded twisted pair) driving
Differential signal multiplexing
GENERAL DESCRIPTION
The AD8133 is a major advancement beyond using discrete
op amps for driving differential RGB signals over twisted pair
cable. The AD8133 is a triple, low cost differential or single-
ended input to differential output driver, and each amplifier has
a fixed gain of 2 to compensate for the attenuation of line ter-
mination resistors. The AD8133 is specifically designed for RGB
signals but can be used for any type of analog signals or high speed
data transmission. The AD8133 is capable of driving either Cate-
gory 5 unshielded twisted pair (UTP) cable or differential printed
circuit board transmission lines with minimal signal degradation.
The outputs of the AD8133 can be set to a low voltage state to
be used with series diodes for line isolation, allowing easy dif-
ferential multiplexing over the same twisted pair cable. The
AD8133 driver can be used in conjunction with the AD8129
and AD8130 differential receivers.
FUNCTIONAL BLOCK DIAGRAM
AD8133
OPD
1
V
S–
2
–IN A
3
+IN A
4
V
S–
5
V
OCM
C
V
S+
–IN C
+IN C
V
S–
18
17
16
15
14
–OUT A
6
–OUT C
13
V
S
–
+
V
S
V
O
A
24
23
22
21
20
V
O
B
19
+
V
S
+
–
V
S
7
8
9
10
11
+
12
0
A
B
C
Figure 1.
FREQUENCY (MHz)
O
0
–20
–10
–40
–30
–60
–50
–80
–70
–100
–90
1
10
100
500
0
V
S
= +5V
V
S
= ±5V
V
OUT, dm
= 2V p-p
V
OUT, cm
/
V
OUT, dm
Figure 2. Output Balance vs. Frequency
Manufactured on Analog Devices’ next generation XFCB bipo-
lar process, the AD8133 has a large signal bandwidth of
225 MHz and a slew rate of 1600 V/μs. The AD8133 has an
internal common-mode feedback feature that provides output
amplitude and phase matching that is balanced to 60 dB at
50 MHz, suppressing harmonics and minimizing radiated elec-
tromagnetic interference (EMI).
The output common-mode level is easily adjustable by applying
a voltage to the V
OCM
input pin. The V
OCM
input can also be used
to transmit signals on the output common-mode voltages.
The AD8133 is available in a 24-lead LFCSP package and can
operate over the temperature range of 40°C to +85°C.
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