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AD8131ARADN/a2482avaiLow-Cost, High-Speed Differential Driver
AD8131ARMAD ?N/a17avaiLow-Cost, High-Speed Differential Driver
AD8131ARM-REEL |AD8131ARMREELADN/a1186avaiLow-Cost, High-Speed Differential Driver
AD8131ARM-REEL7 |AD8131ARMREEL7ADN/a989avaiLow-Cost, High-Speed Differential Driver
AD8131AR-REEL |AD8131ARREELADN/a5000avaiLow-Cost, High-Speed Differential Driver
AD8131AR-REEL7 |AD8131ARREEL7ADN/a77avaiLow-Cost, High-Speed Differential Driver


AD8131AR-REEL ,Low-Cost, High-Speed Differential DriverFEATURESHigh Speed400 MHz –3 dB Full Power Bandwidth18 +D–D ININ2000 V/ms Slew Rate750V 750VVFixed ..
AD8131AR-REEL7 ,Low-Cost, High-Speed Differential DriverCHARACTERISTICSOffset Voltage V = V ; V = V = V = 2.5 V – 3 –7mVOS,dm OUT,dm DIN+ DIN– OCM to T Var ..
AD8132AR ,Low-Cost, High-Speed Differential AmplifierGENERAL DESCRIPTION Differential signal processing reduces the effects of ground noiseThe AD8132 is ..
AD8132ARM ,Low-Cost, High-Speed Differential AmplifierSPECIFICATIONS (@ 25C, V = 5 V, V = 2.5 V, G = 1, R = 499 , R = R = 348  unlessS OCM L,dm F Goth ..
AD8132ARM-REEL ,Low-Cost, High-Speed Differential AmplifierCHARACTERISTICS; Single-Ended Output –3.6 to +3.6 VOutput Voltage Swing Maximum ∆ VOUTOutput Curren ..
AD8132ARM-REEL ,Low-Cost, High-Speed Differential AmplifierSPECIFICATIONS S OCM L,dm F Gotherwise noted. For G = 2, R = 200 , R = 1000 , R = 499 . Refer to ..
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AD8131AR-AD8131ARM-AD8131ARM-REEL-AD8131ARM-REEL7-AD8131AR-REEL-AD8131AR-REEL7
Low-Cost, High-Speed Differential Driver
REV. 0
Low-Cost, High-Speed
Differential Driver
FUNCTIONAL BLOCK DIAGRAM
FEATURES
High Speed
400 MHz –3 dB Full Power Bandwidth
2000 V/ms Slew Rate
Fixed Gain of 2 with No External Components
Internal Common-Mode Feedback to Improve Gain
and Phase Balance
–60 dB @10 MHz
Separate Input to Set the Common-Mode Output
Voltage
Low Distortion
68 dB SFDR @ 5 MHz 200 V Load
Low Power 7.5 mA @ 3 V
Power Supply Range +2.7 V to 65 V
APPLICATIONS
Video Line Driver
Digital Line Driver
Low Power Differential ADC Driver
Differential In/Out Level Shifting
Single-Ended Input to Differential Output Driver
GENERAL DESCRIPTION

The AD8131 is a differential or single-ended input to differen-
tial output driver requiring no external components for a fixed
gain of 2. The AD8131 is a major advancement over op amps
for driving signals over long lines or for driving differential input
ADCs. The AD8131 has a unique internal feedback feature that
provides output gain and phase matching that are balanced to
–60 dB at 10 MHz, reducing radiated EMI and suppressing
harmonics. Manufactured on ADI’s next generation XFCB
bipolar process, the AD8131 has a –3 dB bandwidth of 400 MHz
and delivers a differential signal with very low harmonic distortion.
The AD8131 is a differential driver for the transmission of
high-speed signals over low-cost twisted pair or coax cables.
The AD8131 can be used for either analog or digital video
signals or for other high-speed data transmission. The AD8131
driver is capable of driving either Cat3 or Cat5 twisted pair or coax
with minimal line attenuation. The AD8131 has considerable
cost and performance improvements over discrete line driver
solutions.
The AD8131 can replace transformers in a variety of applica-
tions preserving low frequency and dc information. The AD8131
does not have the susceptibility to magnetic interference and
hysteresis of transformers, while being smaller in size, easier
to work with, and has the high reliability associated with ICs.
The AD8131’s differential output also helps balance the input
for differential ADCs, optimizing the distortion performance of
the ADCs. The common-mode level of the differential output
is adjustable by a voltage on the VOCM pin, easily level-shifting
the input signals for driving single supply ADCs with dual supply
signals. Fast overload recovery preserves sampling accuracy.
The AD8131 will be available in both SOIC and mSOIC packages
for operation over –408C to +858C.
Figure 1.Output Balance Error vs. Frequency
AD8131–SPECIFICATIONS
DYNAMIC PERFORMANCE
NOISE/HARMONIC PERFORMANCE
INPUT CHARACTERISTICS
DYNAMIC PERFORMANCE
DC PERFORMANCE
(@ 258C, VS = 65 V, VOCM = 0, G = 2, RL,dm = 200 V, unless otherwise noted. Refer to
Figures 2 and 37 for test setup and label descriptions. All specifications refer to single-ended input and differential outputs unless noted.)
AD8131SPECIFICATIONS
(@ 258C, VS = 5 V, VOCM = 2.5 V, G = 2, RL,dm = 200 V, unless otherwise noted. Refer to Figures 2 and 37
for test setup and label descriptions. All specifications refer to single-ended input and differential outputs unless noted.)
AD8131
CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8131 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS1

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5.5 V
VOCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –VS
Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . 250 mW
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . . .300°C
NOTESStresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only, functional operation of the
device at these or any other conditions above listed in the operational section of this
specification is not implied. Exposure to Absolute Maximum Ratings for any
extended periods may affect device reliability.Thermal resistance measured on SEMI standard 4-layer board.
8-Lead SOIC qJA = 121°C/W
8-Lead mSOIC qJA = 142°C/W
ORDERING GUIDE

AD8131AR-REEL
AD8131AR-REEL7
AD8131ARM
AD8131ARM-REEL
AD8131ARM-REEL7
PIN FUNCTION DESCRIPTIONS

2VOCM
PIN CONFIGURATION+DIN–DIN7NCVOCM6V+V–5–OUT+OUT
AD8131
NC = NO CONNECT1.5kV
750V750V
Figure 2.Basic Test Circuit
FREQUENCY – MHz
GAIN – dB100010100

Figure 5.Large Signal Frequency
Response
FREQUENCY – MHz
DISTORTION – dBc
–110304060

Figure 8.Harmonic Distortion vs.
Frequency
FREQUENCY – MHz
GAIN – dB100010100

Figure 3.Small Signal Frequency
Response
FREQUENCY – MHz
GAIN – dB100010100

Figure 6.Large Signal Frequency
Response
FREQUENCY – MHz
DISTORTION – dBc
–40

Figure 9.Harmonic Distortion vs.
Frequency
FREQUENCY – MHz
GAIN – dB100010100

Figure 4.Small Signal Frequency
Response
Figure 7.Harmonic Distortion Test
Circuit (RL,dm = 800 W)
Figure 10.Harmonic Distortion vs.
Differential Output Voltage
AD8131
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
DISTORTION – dBc
4.0

Figure 11.Harmonic Distortion vs.
Differential Output Voltage
RLOAD – V
DISTORTION – dBc
9001000

Figure 14.Harmonic Distortion vs.
RLOAD
FREQUENCY – MHz
INTERCEPT – dBm30
0102040607080

Figure 17.Third Order Intercept vs.
Frequency
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
DISTORTION – dBc
1.75

Figure 12.Harmonic Distortion vs.
Differential Output Voltage
RLOAD – V
DISTORTION – dBc
9001000

Figure 15.Harmonic Distortion vs.
RLOAD
Figure 18.Large Signal Transient
Response
Figure 13.Harmonic Distortion vs.
RLOAD
Figure 16.Intermodulation Distortion
Figure 19.Small Signal Transient
Response
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