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PDF AD8132 Data sheet ( Hoja de datos )
| Número de pieza | AD8132 | |
| Descripción | Low-Cost/ High-Speed Differential Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
High speed
350 MHz, −3 dB bandwidth
1200 V/μs slew rate
Resistor set gain
Internal common-mode feedback
Improved 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 Ω load
Low power: 10.7 mA @ 5 V
Power supply range: +2.7 V to ±5.5 V
Fully AEC-Q100 qualified (AD8132W)
APPLICATIONS
Low power differential ADC drivers
Differential gain and differential filtering
Video line drivers
Differential in/out level shifting
Single-ended input to differential output drivers
Active transformers
Automotive driver assistance
Automotive infotainment
GENERAL DESCRIPTION
The AD8132 is a low cost differential or single-ended input to
differential output amplifier with resistor set gain. The AD8132
is a major advancement over op amps for driving differential 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 using the next-generation of Analog Devices, Inc.,
XFCB bipolar process, 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.
Rev. I
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.
Low Cost, High Speed
Differential Amplifier
AD8132
CONNECTION DIAGRAM
–IN 1
VOCM 2
V+ 3
+OUT 4
AD8132
8 +IN
7 NC
6 V–
5 –OUT
NC = NO CONNECT
Figure 1.
The AD8132 is also used as a differential driver for the trans-
mission 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 is used for either
analog or digital video signals or for other high speed data trans-
mission. The AD8132 is capable of driving either a Category 3
or Category 5 twisted pair or coaxial cable with minimal line
attenuation. The AD8132 has considerable cost and performance
improvements over discrete line driver solutions.
Differential signal processing reduces the effects of ground noise
that plagues ground-referenced systems. The AD8132 can be used
for differential signal processing (gain and filtering) throughout a
signal chain, easily simplifying the conversion between differential
and single-ended components.
The AD8132W is the automotive grade version, qualified for
125°C operation per the AEC-Q100. See the Automotive
Products section for more details.
The AD8132 is available in both 8-lead SOIC and 8-lead MSOP
packages for operation over the extended industrial temperature
range of −40°C to +125°C.
6
VS = ±5V
G = +1
3 VO, dm = 2V p-p
RL, dm = 499Ω
0
–3
–6
–9
–12
1
10 100
FREQUENCY (MHz)
Figure 2. Large Signal Frequency Response
1k
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 ©2000–2009 Analog Devices, Inc. All rights reserved.
1 page  
AD8132
SPECIFICATIONS
±DIN TO ±OUT SPECIFICATIONS
At TA = 25°C, VS = ±5 V, VOCM = 0 V, G = +1, RL,dm = 499 Ω, RF = RG = 348 Ω, unless otherwise noted. For G = +2, RL,dm = 200 Ω, RF = 1000 Ω,
RG = 499 Ω. Refer to Figure 56 and Figure 57 for test setup and label descriptions. All specifications refer to single-ended input and
differential outputs, unless otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
−3 dB Large Signal Bandwidth
−3 dB Small Signal Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time
Overdrive Recovery Time
NOISE/HARMONIC PERFORMANCE
Second Harmonic
Third Harmonic
IMD
IP3
Input Voltage Noise (RTI)
Input Current Noise
Differential Gain Error
Differential Phase Error
INPUT CHARACTERISTICS
Offset Voltage (RTI)
Input Bias Current
Input Resistance
Input Capacitance
Input Common-Mode Voltage
CMRR
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Output Balance Error
Conditions
VOUT = 2 V p-p
AD8132W only, TMIN to TMAX
VOUT = 2 V p-p, G = +2
VOUT = 0.2 V p-p
VOUT = 0.2 V p-p, G = +2
VOUT = 0.2 V p-p
VOUT = 0.2 V p-p, G = +2
VOUT = 2 V p-p
AD8132W only, TMIN to TMAX
0.1%, VOUT = 2 V p-p
VIN = 5 V to 0 V step, G = +2
VOUT = 2 V p-p, 1 MHz, RL, dm = 800 Ω
VOUT = 2 V p-p, 5 MHz, RL, dm = 800 Ω
VOUT = 2 V p-p, 20 MHz, RL, dm = 800 Ω
VOUT = 2 V p-p, 1 MHz, RL, dm = 800 Ω
VOUT = 2 V p-p, 5 MHz, RL, dm = 800 Ω
VOUT = 2 V p-p, 20 MHz, RL, dm = 800 Ω
20 MHz, RL, dm = 800 Ω
20 MHz, RL, dm = 800 Ω
f = 0.1 MHz to 100 MHz
f = 0.1 MHz to 100 MHz
NTSC, G = +2, RL, dm = 150 Ω
NTSC, G = +2, RL, dm = 150 Ω
VOS, dm = VOUT, dm/2; VDIN+ = VDIN− = VOCM = 0 V
AD8132W only, TMIN to TMAX
TMIN to TMAX variation
TA = 25°C
AD8132W only, TMIN to TMAX
Differential
Common mode
ΔVOUT, dm/ΔVIN, cm; ΔVIN, cm = ±1 V; resistors matched to 0.01%
AD8132W only, TMIN to TMAX
Maximum ΔVOUT; single-ended output
ΔVOUT, cm/ΔVOUT, dm; ΔVOUT, dm = 1 V
Min Typ
Max Unit
300
280
1000
950
350
190
360
160
90
50
1200
15
5
MHz
MHz
MHz
MHz
MHz
MHz
MHz
V/μs
V/μs
ns
ns
−96
−83
−73
−102
−98
−67
−76
40
8
1.8
0.01
0.10
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBm
nV/√Hz
pA/√Hz
%
Degrees
±1.0 ±3.5 mV
±6 mV
10 μV/°C
3 7 μA
8 μA
12 MΩ
3.5 MΩ
1 pF
−4.7 to +3.0
V
−70 −60 dB
−60 dB
−3.6 to +3.6
+70
−70
V
mA
dB
Rev. I | Page 4 of 32
5 Page 
AD8132
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
–IN 1
VOCM 2
V+ 3
+OUT 4
AD8132
8 +IN
7 NC
6 V–
5 –OUT
NC = NO CONNECT
Figure 4. Pin Configuration
Table 9. Pin Function Descriptions
Pin No. Mnemonic Description
1 −IN
Negative Input.
2 VOCM
Voltage applied to this pin sets the common-mode output voltage with a ratio of 1:1. For example, 1 V dc on
VOCM sets the dc bias level on +OUT and −OUT to 1 V.
3 V+
Positive Supply Voltage.
4
+OUT
Positive Output. Note that the voltage at −DIN is inverted at +OUT (see Figure 64).
5
−OUT
Negative Output. Note that the voltage at +DIN is inverted at −OUT (see Figure 64).
6 V−
Negative Supply Voltage.
7 NC
No Connect.
8 +IN
Positive Input.
Rev. I | Page 10 of 32
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AD8132.PDF ] | |
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