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AD8132AR-AD8132ARM-AD8132ARM-REEL-AD8132AR-REEL
Low-Cost, High-Speed Differential Amplifier
REV.0
Low-Cost, High-Speed
Differential Amplifier
FUNCTIONAL BLOCK DIAGRAM
FEATURES
High Speed
350 MHz –3 dB Bandwidth
1200 V/�s Slew rate
Resistor-Settable Gain
Internal Common-Mode Feedback to Improve Gain
and Phase Balance –68 dB @ 10 MHz
Separate Input to Set the Common-Mode Output
Voltage
Low Distortion –99 dBc SFDR @ 5 MHz 800 � Load
Low Power 10.7 mA @ 5 V
Power Supply Range +2.7 V to �5.5 V
APPLICATIONS
Low Power Differential ADC Driver
Differential Gain and Differential Filtering
Video Line Driver
Differential In/Out Level-Shifting
Single-Ended Input to Differential Output Driver
Active Transformer
GENERAL DESCRIPTIONThe AD8132 is a low-cost differential or single-ended input to
differential output amplifier with resistor-settable gain. The
AD8132 is a major advancement over op amps for driving differ-
ential input ADCs or for driving signals over long lines. The
AD8132 has a unique internal feedback feature that provides
output gain and phase matching balanced to –68 dB at 10 MHz,
suppressing harmonics, and reducing radiated EMI.
Manufactured on ADI’s next generation of XFCB bipolar pro-
cess, the AD8132 has a –3 dB bandwidth of 350 MHz and
delivers a differential signal with –99 dBc SFDR at 5 MHz,
despite its low cost. The AD8132 eliminates the need for a
transformer with high-performance ADCs, preserving the low
frequency and dc information. The common-mode level of the
differential output is adjustable by applying a voltage on the VOCM
pin, easily level-shifting the input signals for driving single supply
ADCs. Fast overload recovery preserves sampling accuracy.
The AD8132 can also be used as a differential driver for the
transmission of high-speed signals over low-cost twisted pair or
coaxial cables. The feedback network can be adjusted to boost
the high-frequency components of the signal. The AD8132 can
be used for either analog or digital video signals or for other high-
speed data transmission. The AD8132 is capable of driving either
cat3 or cat5 twisted pair or coaxial with minimal line attenu-
ation. The AD8132 has considerable cost and performance
improvements over discrete line driver solutions.
Differential signal processing reduces the effects of ground noise
which plagues ground referenced systems. The AD8132 can be
used for differential signal processing (gain and filtering) through-
out a signal chain, easily simplifying the conversion between
differential and single-ended components.
The AD8132 is available in both SOIC and µSOIC packages for
operation over –40°C to +85°C temperatures.
FREQUENCY – MHz
GAIN
dB
–121001kFigure 1.Large Signal Frequency Response
AD8132–SPECIFICATIONS
(@ 25�C, VS = �5 V, VOCM = 0 V, G = 1, RL,dm = 499 �, RF = RG = 348 � unless
otherwise noted. For G = 2, RL,dm = 200 �, RF = 1000 �, RG = 499 �. Refer to TPC 1 and TPC 10 for test setup and label descriptions. All
specifications refer to single-ended input and differential outputs unless otherwise noted.)
AD8132
(@ 25�C, VS = 5 V, VOCM = 2.5 V, G = 1, RL,dm = 499 �, RF = RG = 348 � unless
otherwise noted. For G = 2, RL,dm = 200 �, RF = 1000 �, RG = 499 �. Refer to TPC 1 and TPC 10 for test setup and label descriptions. All
specifications refer to single-ended input and differential outputs unless otherwise noted.)
AD8132–SPECIFICATIONS
AD8132–SPECIFICATIONSDYNAMIC PERFORMANCE
NOISE/HARMONIC PERFORMANCE
DC PERFORMANCE
Specifications subject to change without notice.
(@ 25�C, VS = 3 V, VOCM = 1.5 V, G = 1, RL,dm = 499 �, RF = RG = 348 � unless
otherwise noted. For G = 2, RL,dm = 200 �, RF = 1000 �, RG = 499 �. Refer to TPC 1 and TPC 10 for test setup and label descriptions. All
specifications refer to single-ended input and differential outputs unless otherwise noted.)
AD8132
ABSOLUTE MAXIMUM RATINGS1, 2Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5.5 V
VOCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . 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: θJA = 121°C/W
8-Lead µSOIC: θJA = 142°C/W
Figure 2.Plot of Maximum Power Dissipation vs.
Temperature
ORDERING GUIDENOTES13" Reels of 2500 each.7" Reels of 1000 each.13" Reels of 3000 each.
PIN FUNCTION DESCRIPTIONS
PIN CONFIGURATION
CAUTIONESD (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 AD8132 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.
AD8132TPC 1.Basic Test Circuit, G = 1
TPC 4.0.1 dB Flatness vs. Frequency;
CF = 0.5 pF
FREQUENCY – MHz
GAIN
dB101001kTPC 7.Large Signal Response vs.
Temperature
TPC 2.Small Signal Frequency
Response
TPC 5.Large Signal Frequency
Response; CF = 0 pF
TPC 8.Large Signal Frequency
Response vs. RF
TPC 3.0.1 dB Flatness vs. Frequency;
CF = 0 pF
FREQUENCY – MHz
GAIN
dB101001kTPC 6.Large Signal Frequency
Response; CF = 0.5 pF
FREQUENCY – MHz
IMPEDANCE
0.1100TPC 9.Closed-Loop Single-Ended
ZOUT vs. Frequency; G = 1
–Typical Performance Characteristics
TPC 11.Small Signal Frequency
Response
FREQUENCY – MHz
GAIN
dB101001kTPC 14.Small Signal Frequency
Response vs. RF
TPC 17.Test Circuit for Output
Balance
FREQUENCY – MHz
GAIN
dB101001k
5.5TPC 12.0.1 dB Flatness vs.
Frequency
TPC 15.Test Circuit for Various
Gains
FREQUENCY – MHz
RTI BALANCE ERROR
dB101001k
–75TPC 18.RTI Output Balance
Error vs. Frequency
TPC 10.Basic Test Circuit, G = 2
TPC 13.Large Signal Frequency
Response
TPC 16.Large Signal Response for
Various Gains
AD8132 TPC 19.Harmonic Distortion Test Circuit,
G = 1, RL,dm = 800 Ω
FREQUENCY – MHz
DISTORTION
dBc
–100304010–110TPC 20.Harmonic Distortion vs.
Frequency, G = 1
TPC 23.Harmonic Distortion vs.
Differential Output Voltage, G = 1
TPC 21.Harmonic Distortion vs.
Frequency, G = 1
TPC 24.Harmonic Distortion vs.
Differential Output Voltage, G = 1
TPC 22.Harmonic Distortion vs.
Differential Output Voltage, G = 1
RLOAD – �
DISTORTION
dBc
9001000TPC 25.Harmonic Distortion vs.
RLOAD, G = 1
RLOAD – �
DISTORTION
dBc
9001000TPC 26.Harmonic Distortion vs.
RLOAD, G = 1
RLOAD – �
DISTORTION
dBc
9001000TPC 27.Harmonic Distortion vs.
RLOAD, G = 1
TPC 28.Harmonic Distortion Test Circuit, G = 2, RL,dm = 800 Ω
FREQUENCY – MHz
DISTORTION
dBc50
–40TPC 29.Harmonic Distortion vs.
Frequency, G = 2
FREQUENCY – MHz
DISTORTION
dBc50
–20TPC 30.Harmonic Distortion vs.
Frequency, G = 2
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
DISTORTION
dBc
–120TPC 31.Harmonic Distortion vs.
Differential Output Voltage, G = 2
AD8132TPC 32.Harmonic Distortion vs.
Differential Output Voltage, G = 2
FREQUENCY – MHz
OUT
dBm (Re:50
–9020.5TPC 35.Intermodulation
Distortion, G = 1
TPC 38.Large Signal Transient
Response, G = 1
RLOAD – �
DISTORTION
dBc
9001000TPC 33.Harmonic Distortion vs.
RLOAD, G = 2
FREQUENCY – MHz
INTERCEPT
dBm (Re:50010702030405060TPC 36.Third Order Intercept vs.
Frequency, G = 1
TPC 39.Large Signal Transient
Response, G = 1
RLOAD – �
DISTORTION
dBc
9001000TPC 34.Harmonic Distortion vs.
RLOAD, G = 2
TPC 37.Small Signal Transient
Response, G = 1
TPC 40.Large Signal Transient
Response, G = 1
