AD8129AR-REEL1 AD [Analog Devices], AD8129AR-REEL1 Datasheet

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AD8129AR-REEL1

Manufacturer Part Number
AD8129AR-REEL1
Description
Low-Cost 270 MHz Differential Receiver Amplifiers
Manufacturer
AD [Analog Devices]
Datasheet
a
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
120
110
100
90
80
70
60
50
40
30
10k
100k
√Hz
√Hz
FREQUENCY – Hz
1M
10M
100M
Differential Receiver Amplifiers
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.
V
SO-8 (R) and Micro_SO-8 (RM)
IN
V
R
OUT
CONNECTION DIAGRAM
G
REF
–V
+IN
= V
PD
S
IN
1
2
3
4
[1+(R
PD
(Top View)
Low-Cost 270 MHz
AD8129/AD8130
R
AD8129/
AD8130
F
F
+
/R
G
+V
–V
)]
S
S
8
7
6
5
–IN
+V
OUT
FB
S
V
OUT

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AD8129AR-REEL1 Summary of contents

Page 1

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 ...

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AD8129/AD8130–SPECIFICATIONS 5 V SPECIFICATIONS (AD8129 G = 10, AD8130 otherwise noted – +85 C, unless otherwise noted.) MIN MAX Model Parameter Conditions DYNAMIC PERFORMANCE ≤ 0.3 V p-p –3 dB ...

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V SPECIFICATIONS (AD8129 G = 10, AD8130 unless otherwise noted – +85 C, unless otherwise noted.) MIN MAX Model Parameter Conditions DYNAMIC PERFORMANCE ≤ 0.3 V p-p –3 dB ...

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AD8129/AD8130–SPECIFICATIONS 5 V SPECIFICATIONS (AD8129 G = 10, AD8130 unless otherwise noted – +85 C, unless otherwise noted.) MIN MAX Model Parameter Conditions DYNAMIC PERFORMANCE ≤ 0.3 V p-p –3 ...

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... AD8129AR –40ºC to +85ºC 1 AD8129AR-REEL –40ºC to +85ºC 2 AD8129AR-REEL7 –40ºC to +85ºC AD8129ARM –40ºC to +85ºC 3 AD8129ARM-REEL –40ºC to +85ºC 2 AD8129ARM-REEL7 –40ºC to +85ºC AD8129-EVAL AD8130AR –40ºC to +85ºC 1 AD8130AR-REEL –40ºC to +85ºC ...

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AD8129/AD8130 AD8130 Frequency Response Characteristics ( pF 0 OUT 2. 0.3V p-p S OUT ...

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750 499 – – 250 F G –3 – ...

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AD8129/AD8130 AD8129 Frequency Response Characteristics ( 0 OUT 0.3V p-p OUT 2.5V ...

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0 909 /100 0.4 499 /54.9 0.2 SOIC 0 –0.2 499 /54.9 0.2 909 /100 SOIC 0 2k /221 –0.2 –0.4 –0 100 300 FREQUENCY – MHz µ ...

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AD8129/AD8130 AD8130 Harmonic Distortion Characteristics ( pF unless otherwise noted – p-p OUT – 12V S –72 – ...

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AD8129 Harmonic Distortion Characteristics ( pF unless otherwise noted – p-p OUT –57 – 10 12V S –69 G ...

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AD8129/AD8130 – p-p –45 OUT – 5MHz C –57 –63 –69 HD2 –75 –81 HD3 –87 –5 –4 –3 –2 – ...

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V = 2.5V S –90 –100 V = 5V, 12V S –110 –120 10k 100k 1M 10M 100M FREQUENCY – Hz –30 –40 –50 –60 – 2.5V –80 S –90 –100 –110 ...

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AD8129/AD8130 AD8130 Transient Response Characteristics ( pF p-p OUT V = 2.5V S 5.00ns 250mV ± 2.5V ...

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p-p OUT 10pF 5V 2pF S L 5.00ns 250mV OUT 1.00V 5.00ns ...

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AD8129/AD8130 AD8129 Transient Response Characteristics ( 221 , 2. p-p OUT S 5.00ns 250mV ± ...

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p OUT C = 20pF L 250mV 5.00ns ± ± OUT 1.00V 5.00ns p 20pF L 2V p-p 1V p-p 12.5ns ...

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AD8129/AD8130 –5 –4 –3 –2 – DIFFERENTIAL INPUT – –1.0 ...

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TOTAL SUPPLY VOLTAGE – V 4.00 3.75 AD8130 3.50 AD8129 3. 3. 100mV 2.50 OUT AC AT 1kHz 2.25 ...

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AD8129/AD8130 THEORY OF OPERATION The AD8129/AD8130 use an architecture called active feed- back which differs from that of conventional op amps. The most obvious differentiating feature is the presence of two sepa- rate pairs of differential inputs compared to a ...

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APPLICATIONS Basic Gain Circuits The gain of the AD8129/AD8130 can be set with a pair of feed- back resistors. The basic configuration is shown in Figure 5. The gain equation is the same as that of a conventional op amp: ...

Page 22

AD8129/AD8130 –10 –20 –30 –40 –50 –60 –70 –80 10k 100k 1M FREQUENCY – Hz The feedback network is between Pins 6 and 5 and from Pin 5 to ground. C1 and R create a corner frequency ...

Page 23

AD8129/ AD8130 0 OFFSET – 0.1 F –V A way around this is to apply the offset voltage to a voltage divider whose attenuation factor ...

Page 24

AD8129/AD8130 The center conductor connects to the positive differential input of the AD8130. The amplitude of the video signal at this point is unity, because it is between the two termination resistors. The AD8130 provides a high impedance to this ...

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Power Dissipation The AD8129/AD8130 can operate with supply voltages from + ± The major reason for such a wide supply range is to provide a wide input common-mode range for systems that might require this. This ...

Page 26

AD8129/AD8130 0.0098 (0.25) 0.0040 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead SOIC (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.2440 (6.20) 0.1574 (4.00) 0.2284 (5.80) 0.1497 (3.80 PIN 1 0.0500 (1.27) BSC 0.0688 (1.75) 0.0532 ...

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