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Low Cost 270 MHz
Differential Receiver Amplifiers
AD8129/AD8130
FEATURES
High speed
AD8130: 270 MHz, 1090 V/μs @ G = +1
AD8129: 200 MHz, 1060 V/μs @ G = +10
High CMRR
94 dB min, dc to 100 kHz
80 dB min @ 2 MHz
70 dB @ 10 MHz
High input impedance: 1 MΩ differential
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
CONNECTION DIAGRAM
+IN
1
–V
S 2
PD
3
REF
4
AD8129/
AD8130
+
8
7
6
5
–IN
+V
S
OUT
FB
02464-001
Figure 1.
The AD8129/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 1
and can be used for 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/AD8130 have very high input impedance
on both inputs, regardless of the gain setting.
APPLICATIONS
High speed differential line receivers
Differential-to-single-ended converters
High speed instrumentation amps
Level shifting
GENERAL DESCRIPTION
The AD8129/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.
120
110
100
90
CMRR (dB)
The AD8129/AD8130 have excellent common-mode rejection
(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/AD8130 have a wide power
supply range from single +5 V to ±12 V, allowing wide common-
mode and differential-mode voltage ranges while maintaining
signal integrity. The wide common-mode voltage range enables
the driver-receiver pair to operate without isolation transformers
in many systems where the ground potential difference between
drive and receive locations is many volts. The AD8129/AD8130
have considerable cost and performance improvements over
op amps and other multiamplifier receiving solutions.
+V
S
PD
3
1
8
4
7
6
5
2
80
70
60
50
40
02464-002
V
IN
V
OUT
30
10k
100k
1M
FREQUENCY (Hz)
10M
100M
R
G
R
F
02464-003
Figure 2. AD8129 CMRR vs. Frequency
–V
S
V
OUT
= V
IN
[1+(R
F
/R
G
)]
Figure 3. Typical Connection Configuration
Rev. C
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
AD8129/AD8130
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Connection Diagram ....................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
AD8129/AD8130 Specifications..................................................... 3
5 V Specifications ......................................................................... 3
±5 V Specifications....................................................................... 5
±12 V Specifications..................................................................... 7
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Typical Performance Characteristics ........................................... 10
AD8130 Frequency Response Characteristics........................ 10
AD8129 Frequency Response Characteristics........................ 13
AD8130 Harmonic Distortion Characteristics ...................... 16
AD8129 Harmonic Distortion Characteristics ...................... 18
AD8130 Transient Response Characteristics.......................... 23
AD8129 Transient Response Characteristics.......................... 26
Theory of Operation ...................................................................... 32
Op Amp Configuration ............................................................. 32
Applications..................................................................................... 33
Basic Gain Circuits..................................................................... 33
Twisted-Pair Cable, Composite Video Receiver with
Equalization Using an AD8130................................................... 33
Output Offset/Level Translator ................................................ 34
Resistorless Gain of 2 ................................................................. 35
Summer ....................................................................................... 35
Cable-Tap Amplifier .................................................................. 35
Power-Down ............................................................................... 36
Extreme Operating Conditions ................................................ 36
Power Dissipation....................................................................... 37
Layout, Grounding, and Bypassing.......................................... 38
Outline Dimensions ....................................................................... 39
Ordering Guide .......................................................................... 40
REVISION HISTORY
11/05—Rev. B to Rev. C
Changes to 5 V Specifications......................................................... 3
Changes to Table 4 and Maximum Power Dissipation Section.. 9
Changes to Figure 16...................................................................... 11
Changes to Figure 17...................................................................... 12
3/05—Rev. 0 to Rev. A
Changes to Specifications.................................................................2
Replaced Figure 3 ..............................................................................5
Changes to Ordering Guide .............................................................6
Updated Outline Dimensions....................................................... 27
Revision 0: Initial Version
9/05—Rev. A to Rev. B
Extended Temperature Range...........................................Universal
Deleted Figure 5................................................................................ 5
Added Thermal Resistance Section ............................................... 9
Updated Outline Dimensions ....................................................... 39
Changes to Ordering Guide .......................................................... 40
Rev. C | Page 2 of 40
AD8129/AD8130
AD8129/AD8130 SPECIFICATIONS
5 V SPECIFICATIONS
AD8129 G = +10, AD8130 G = +1, T
A
= 25°C, +V
S
= 5 V, −V
S
= 0 V, REF = 2.5 V, PD ≥ V
IH
, R
L
= 1 kΩ, C
L
= 2 pF, unless otherwise noted.
T
MIN
to T
MAX
= −40°C to +125°C, unless otherwise noted.
Table 1.
Model
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB
Flatness
Slew Rate
Settling Time
Rise and Fall Times
Output Overdrive Recovery
NOISE/DISTORTION
Second Harmonic/Third
Harmonic
Conditions
V
OUT
≤ 0.3 V p-p
V
OUT
= 1 V p-p
V
OUT
≤ 0.3 V p-p,
SOIC/MSOP
V
OUT
= 2 V p-p, 25%
to 75%
V
OUT
= 2 V p-p, 0.1%
V
OUT
≤ 1 V p-p, 10%
to 90%
Min
160
160
AD8129
Typ
185
185
25/40
930
20
1.8
20
V
OUT
= 1 V p-p, 5 MHz
V
OUT
= 2 V p-p, 5 MHz
V
OUT
= 1 V p-p, 10 MHz
V
OUT
= 2 V p-p, 10 MHz
V
OUT
= 2 V p-p, 10 MHz
V
OUT
= 2 V p-p, 10 MHz
f ≥ 10 kHz
f ≥ 100 kHz
f ≥ 100 kHz
AD8130, G = +2, NTSC
100 IRE, R
L
≥ 150 Ω
AD8130, G = +2, NTSC
100 IRE, R
L
≥ 150 Ω
DC to 100 kHz,
V
CM
= 1.5 V to 3.5 V
V
CM
= 1 V p-p @ 1 MHz
V
CM
= 1 V p-p @ 10 MHz
V
CM
= 1 V p-p @ 1 kHz,
V
OUT
= ±0.5 V dc
V
+IN
− V
−IN
= 0 V
86
80
70
80
1.25 to
3.7
±0.5
±0.75
1
4
3
4
−68/−75
−62/−64
−63/−70
−56/−58
−67
25
4.5
1
1.4
0.3
0.1
Max
Min
220
180
AD8130
Typ
250
205
25
930
20
1.5
30
−72/−79
−65/−71
−60/−62
−68/−68
−70
26
12.3
1
1.4
0.13
0.15
Max
Unit
MHz
MHz
MHz
V/μs
ns
ns
ns
dBc
dBc
dBc
dBc
dBc
dBm
nV/√Hz
pA/√Hz
pA/√Hz
%
Degrees
810
810
IMD
Output IP3
Input Voltage Noise (RTI)
Input Current Noise (+IN, −IN)
Input Current Noise
(REF, FB)
Differential Gain Error
Differential Phase Error
INPUT CHARACTERISTICS
Common-Mode Rejection
Ratio
96
86
80
96
dB
dB
dB
dB
V
V
V
MΩ
MΩ
pF
pF
CMRR with V
OUT
= 1 V p-p
Common-Mode Voltage
Range
Differential Operating Range
Differential Clipping Level
Resistance
Capacitance
70
72
1.25 to
3.8
±2.5
±2.8
6
4
3
4
±0.6
Differential
Common mode
Differential
Common mode
±0.85
±2.3
±3.3
Rev. C | Page 3 of 40
AD8129/AD8130
Model
Parameter
DC PERFORMANCE
Closed-Loop Gain Error
Open-Loop Gain
Gain Nonlinearity
Input Offset Voltage
Conditions
V
OUT
= ±1 V, R
L
≥ 150 Ω
T
MIN
to T
MAX
V
OUT
= ±1 V
V
OUT
= ±1 V
T
MIN
to T
MAX
T
MIN
to T
MAX
+V
S
= 5 V, −V
S
= −0.5 V
to +0.5 V
−V
S
= 0 V, +V
S
= +4.5 V
to +5.5 V
Min
AD8129
Typ
±0.25
20
86
250
0.2
2
−88
−100
±0.5
±1
T
MIN
to T
MAX
(+IN, −IN,
REF, FB)
(+IN, −IN, REF, FB)
T
MIN
to T
MAX
R
LOAD
≥ 150 Ω
To common
T
MIN
to T
MAX
PD ≤ V
IL
, in power-
down mode
Total supply voltage
T
MIN
to T
MAX
PD ≤ V
IL
PD ≤ V
IL
, T
MIN
to T
MAX
PD PIN
V
IH
V
IL
I
IH
I
IL
Input Resistance
Enable Time
OPERATING TEMPERATURE
RANGE
+V
S
− 1.5
PD = min V
IH
PD = max V
IL
PD ≤ +V
S
− 3 V
PD ≥ +V
S
− 2 V
−40
+V
S
− 2.5
−30
−50
12.5
100
0.5
+125
−40
12.5
100
0.5
+125
±2.25
9.9
33
0.65
1.1
35
−60/+55
−240
10
5
±0.08
0.2
±0.4
Max
±1.25
Min
AD8130
Typ
±0.1
20
71
200
0.4
20
−74
−90
±0.5
±1
5
±0.08
0.2
1.1
35
−60/+55
−240
10
±0.4
Max
±0.6
Unit
%
ppm/°C
dB
ppm
mV
μV/°C
mV
dB
dB
μA
μA
nA/°C
μA
nA/°C
V
mA
mA
μA/°C
pF
0.8
1.4
−80
−86
±2
±3.5
1.8
3.5
−70
−76
±2
±3.5
Input Offset Voltage vs.
Supply
Input Bias Current
(+IN, −IN)
Input Bias Current
(REF, FB)
Input Offset Current
OUTPUT PERFORMANCE
Voltage Swing
Output Current
Short-Circuit Current
Output Impedance
POWER SUPPLY
Operating Voltage Range
Quiescent Supply Current
3.9
3.9
±12.6
10.6
0.85
1
±2.25
9.9
33
0.65
±12.6
10.6
0.85
1
V
mA
μA/°C
mA
mA
V
V
μA
μA
kΩ
kΩ
μs
°C
+V
S
− 1.5
+V
S
− 2.5
−30
−50
Rev. C | Page 4 of 40
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