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參數資料
| 型號： | AD8129-EVAL |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low-Cost 270 MHz Differential Receiver Amplifiers |
| 中文描述： | 低成本270 MHz的差分接收器放大器 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 510K |
| 代理商： | AD8129-EVAL |
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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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD8129/AD8130
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2001
Low-Cost 270 MHz
Differential Receiver Amplifiers
CONNECTION DIAGRAM
(Top View)
SO-8 (R) and Micro_SO-8 (RM)
AD8129/
AD8130
1
2
3
4
+IN
–IN
–V
S
+V
S
PD
OUT
REF
FB
8
7
6
5
+
FEATURES
High Speed
AD8130: 270 MHz, 1090 V/ s @ G = 1
AD8129: 200 MHz, 1060 V/ s @ G = 10
High CMRR
94 dB Min, DC to 100 kHz
80 dB Min @ 2 MHz
70 dB @ 10 MHz
High-Input Impedance: 1 M
Input Common-Mode Range 10.5 V
Low Noise
AD8130: 12.5 nV/
√
Hz
AD8129: 4.5 nV/
√
Hz
Low Distortion, 1 V p-p @ 5 MHz:
AD8130, –79 dBc Worst Harmonic @ 5 MHz
AD8129, –74 dBc Worst Harmonic @ 5 MHz
User-Adjustable Gain
No External Components for G = 1
Power Supply Range +4.5 V to 12.6 V
Power-Down
Differential
APPLICATIONS
High-Speed Differential Line Receiver
Differential-to-Single-Ended Converter
High-Speed Instrumentation Amp
Level-Shifting
GENERAL DESCRIPTION
The AD8129 and AD8130 are designed as receivers for the
transmission of high-speed signals over twisted-pair cables to
work with the AD8131 or AD8132 drivers. Either can be
used for analog or digital video signals and for high-speed
data transmission. The AD8129 and AD8130 are differential-
to-single-ended amplifiers with extremely high CMRR at high
frequency. Therefore, they can also be effectively used as
high-speed instrumentation amps or for converting differential
signals to single-ended signals.
The AD8129 is a low-noise high-gain (10 or greater) version
intended for applications over very long cables where signal
attenuation is significant. The AD8130 is stable at a gain of one
and can be used for those applications where lower gains are
required. Both have user adjustable gain to help compensate for
losses in the transmission line. The gain is set by the ratio of
two resistor values. The AD8129 and AD8130 have very high
input impedance on both inputs regardless of the gain setting.
The AD8129 and AD8130 have excellent common-mode rejec-
tion (70 dB @ 10 MHz) allowing the use of low cost unshielded
twisted-pair cables without fear of corruption by external noise
sources or crosstalk.
The AD8129 and AD8130 have a wide power supply range
from single 5 V supply to
±
12 V, allowing wide common-mode
and differential-mode voltage ranges while maintaining signal
integrity. The wide common-mode voltage range will enable
the driver receiver pair to operate without isolation transform-
ers in many systems where the ground potential difference
between drive and receive locations is many volts. The AD8129
and AD8130 have considerable cost and performance improve-
ments over op amps and other multi-amplifier receiving solutions.
120
110
100
90
80
70
60
50
40
30
10k
100k
1M
10M
100M
FREQUENCY
–
Hz
C
–
Figure 1. AD8129 CMRR vs. Frequency
R
F
V
OUT
V
IN
R
G
V
OUT
= V
IN
[1+(R
F
/R
G
)]
PD
+V
S
–
V
S
Figure 2. Typical Connection Configuration
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