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AD8129 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8129
Beschreibung (AD8129 / AD8130) Low Cost 270 MHz Differential Receiver Amplifiers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 30 Seiten
AD8129 Datasheet, Funktion
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
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
80
70
60
50
40
30
10k
100k
1M
FREQUENCY (Hz)
10M
Figure 2. AD8129 CMRR vs. Frequency
100M
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
CONNECTION DIAGRAM
AD8129/
AD8130
+IN 1
8 –IN
–VS 2
PD 3
+
7 +VS
6 OUT
REF 4
5 FB
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.
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.
+VS
PD
3
1
VIN
8
7
6
4
2
5
VOUT
RG RF
–VS
VOUT = VIN [1+(RF/RG)]
Figure 3. Typical Connection Configuration
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 Datasheet, Funktion
AD8129/AD8130
±5 V SPECIFICATIONS
AD8129 G = +10, AD8130 G = +1, TA = 25°C, VS = ±5 V, REF = 0 V, PD ≥ VIH, RL = 1 kΩ, CL = 2 pF, unless otherwise noted. TMIN to TMAX
= −40°C to +125°C, unless otherwise noted.
Table 2.
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
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
CMRR with VOUT = 1 V p-p
Common-Mode Voltage
Range
Differential Operating
Range
Differential Clipping Level
Resistance
Capacitance
Conditions
VOUT ≤ 0.3 V p-p
VOUT = 2 V p-p
VOUT ≤ 0.3 V p-p,
SOIC/MSOP
VOUT = 2 V p-p,
25% to 75%
VOUT = 2 V p-p, 0.1%
VOUT ≤ 1 V p-p,
10% to 90%
VOUT = 1 V p-p, 5 MHz
VOUT = 2 V p-p, 5 MHz
VOUT = 1 V p-p, 10 MHz
VOUT = 1 V p-p, 10 MHz
VOUT = 2 V p-p, 10 MHz
VOUT = 2 V p-p, 10 MHz
f ≥ 10 kHz
f ≥ 100 kHz
f ≥ 100 kHz
AD8130, G = +2, NTSC
200 IRE, RL ≥ 150 Ω
AD8130, G = +2, NTSC
200 IRE, RL ≥ 150 Ω
DC to 100 kHz,
VCM = −3 V to +3.5 V
VCM = 1 V p-p @ 2 MHz
VCM = 1 V p-p @ 10 MHz
VCM = 2 V p-p @ 1 kHz,
VOUT = ±0.5 V dc
V+IN − V−IN = 0 V
Differential
Common mode
Differential
Common mode
Min
175
170
925
94
80
±0.6
AD8129
Typ Max
200
190
30/50
1060
20
1.7
30
−74/−84
−68/−74
−67/−81
−61/−70
−67
25
4.5
1
1.4
0.3
0.1
Min
240
140
950
110
70
100
±3.5
±0.5
±0.75
1
4
3
4
±0.85
90
80
±2.3
AD8130
Typ Max
270
155
45
1090
20
1.4
40
−79/−86
−74/−81
−74/−80
−74/−76
−70
26
12.5
1
1.4
0.13
0.15
110
70
83
±3.8
±2.5
±2.8 ±3.3
6
4
3
4
Unit
MHz
MHz
MHz
V/μs
ns
ns
ns
dBc
dBc
dBc
dBc
dBc
dBm
nV/√Hz
pA/√Hz
pA/√Hz
%
Degrees
dB
dB
dB
dB
V
V
V
pF
pF
Rev. C | Page 5 of 40

6 Page









AD8129 pdf, datenblatt
3
RL = 150Ω
2
1
VS = ±2.5V
0
–1 VS = ±5V
–2
VS = ±12V
–3
–4
–5
–6
–7
1
10
FREQUENCY (MHz)
100
400
Figure 11. AD8130 Frequency Response vs. Supply, RL = 150 Ω
3
G = +2
2 VOUT = 0.3V p-p
1 VS = ±2.5V
0
–1 VS = ±5V
–2 VS = ±12V
–3
–4
–5
–6
–7
1
10
FREQUENCY (MHz)
100
300
Figure 12. AD8130 Frequency Response vs. Supply,
G = +2, VOUT = 0.3 V p-p
3
G = +2
2 VOUT = 2V p-p
1
VS = ±2.5V
0
–1 VS = ±5V
–2 VS = ±12V
–3
–4
–5
–6
–7
1
10
FREQUENCY (MHz)
100
300
Figure 13. AD8130 Frequency Response vs. Supply,
G = +2, VOUT = 2 V p-p
AD8129/AD8130
3
G = +2
2 VS = ±5V
1
RF = RG = 750Ω
RF = RG = 1kΩ
0
–1 RF = RG = 499Ω
–2
–3 RF = RG = 250Ω
–4
–5
–6
–7
1
10
FREQUENCY (MHz)
100
300
Figure 14. AD8130 Frequency Response for Various RF/RG
0.3
G = +2
0.2 RL = 1kΩ
VS = ±2.5V
0.1
0
–0.1
–0.2
–0.3 VS = ±5V
–0.4
–0.5
–0.6
–0.7
1
VS = ±12V
10
FREQUENCY (MHz)
Figure 15. AD8130 Fine Scale Response vs. Supply,
G = +2, RL = 1 kΩ
100
0.3
G = +2
0.2 RL = 150Ω
0.1 VS = ±2.5V
0
–0.1
–0.2
VS = ±5V
–0.3
–0.4
VS = ±12V
–0.5
–0.6
–0.7
1
10
FREQUENCY (MHz)
Figure 16. AD8130 Fine Scale Response vs. Supply,
G = +2, RL = 150 Ω
100
Rev. C | Page 11 of 40

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