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PDF AD8042 Data sheet ( Hoja de datos )
| Número de pieza | AD8042 | |
| Descripción | Dual 160 MHz Rail-to-Rail Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Single AD8041 and quad AD8044 also available
Fully specified at +3 V, +5 V, and ±5 V supplies
Output swings to within 30 mV of either rail
Input voltage range extends 200 mV below ground
No phase reversal with inputs 0.5 V beyond supplies
Low power of 5.2 mA per amplifier
High speed and fast settling on 5 V
160 MHz, −3 dB bandwidth (G = +1)
200 V/μs slew rate
39 ns settling time to 0.1%
Good video specifications (RL = 150 Ω, G = +2)
Gain flatness of 0.1 dB to 14 MHz
0.02% differential gain error
0.04° differential phase error
Low distortion: −64 dBc worst harmonic @ 10 MHz
Drives 50 mA 0.5 V from supply rails
APPLICATIONS
Video switchers
Distribution amplifiers
Analog-to-digital drivers
Professional cameras
CCD Imaging systems
Ultrasound equipment (multichannel)
GENERAL DESCRIPTION
The AD8042 is a low power voltage feedback, high speed amplifier
designed to operate on +3 V, +5 V, or ±5 V supplies. It has true
single-supply capability with an input voltage range extending
200 mV below the negative rail and within 1 V of the positive rail.
5.0V
G = +1
RL = 2kΩ TO 2.5V
2.5V
0V
1V 1µs
Figure 1. Output Swing: Gain = +1, VS = +5 V
Rev. E
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.
Dual 160 MHz
Rail-to-Rail Amplifier
AD8042
CONNECTION DIAGRAM
OUT1 1
8 +VS
–IN1 2
7 OUT2
+IN1 3
6 –IN2
–VS 4 AD8042
5 +IN2
Figure 2. 8-Lead PDIP and 8-Lead SOIC_N
The output voltage swing extends to within 30 mV of each rail,
providing the maximum output dynamic range. Additionally, it
features gain flatness of 0.1 dB to 14 MHz while offering differential
gain and phase error of 0.04% and 0.06° on a single 5 V supply.
This combination of features makes the AD8042 useful for
professional video electronics, such as cameras, video switchers,
or any high speed portable equipment. The low distortion and
fast settling of the AD8042 make it ideal for buffering single-
supply, high speed analog-to-digital converters (ADCs).
The AD8042 offers a low power supply current of 12 mA
maximum and can run on a single 3.3 V power supply. These
features are ideally suited for portable and battery-powered
applications where size and power are critical.
The wide bandwidth of 160 MHz along with 200 V/μs of slew
rate on a single 5 V supply make the AD8042 useful in many
general-purpose, high speed applications where single supplies
from +3.3 V to +12 V and dual power supplies of up to ±6 V are
needed. The AD8042 is available in 8-lead PDIP and 8-lead
SOIC_N packages.
15
VS = 5V
12 G = +1
CL = 5pF
9 RL = 2kΩ TO 2.5V
6
3
0
–3
–6
–9
–12
–15
1
10
FREQUENCY (MHz)
100
Figure 3. Frequency Response
500
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
©2007 Analog Devices, Inc. All rights reserved.
1 page  
AD8042
TA = 25°C, VS = 3 V, RL = 2 kΩ to 1.5 V, unless otherwise noted.
Table 2.
Parameter
Conditions
Min Typ
Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth, VO < 0.5 V p-p G = +1
120 140
MHz
Bandwidth for 0.1 dB Flatness
G = +2, RL = 150 Ω, RF = 200 Ω
11 MHz
Slew Rate
G = −1, VOUT = 2 V step
120 170
V/μs
Full Power Response
VO = 2 V p-p
25 MHz
Settling Time to 1%
G = −1, VOUT = 1 V step
30 ns
Settling Time to 0.1%
45 ns
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion
fC = 5 MHz, VOUT = 2 V p-p, G = −1, RL = 100 Ω
–56
dB
Input Voltage Noise
f = 10 kHz
16 nV/√Hz
Input Current Noise
f = 10 kHz
500 fA/√Hz
Differential Gain Error (NTSC, 100 IRE)
G = +2, RL = 150 Ω to 1.5 V, Input VCM = 1 V
0.10
%
RL = 75 Ω to 1.5 V, Input VCM = 1 V
0.10 %
Differential Phase Error (NTSC, 100 IRE)
G = +2, RL = 150 Ω to 1.5 V, Input VCM = 1 V
0.12
Degrees
RL = 75 Ω to 1.5 V, Input VCM = 1 V
0.27 Degrees
Worst-Case Crosstalk
f = 5 MHz, RL = 1 kΩ to 1.5 V
–68 dB
DC PERFORMANCE
Input Offset Voltage
3 9 mV
TMIN to TMAX
12 mV
Offset Drift
12 μV/°C
Input Bias Current
1.2 3.2 μA
TMIN to TMAX
4.8 μA
Input Offset Current
0.2 0.6 μA
Open-Loop Gain
RL = 1 kΩ
90 100
dB
TMIN to TMAX
90 dB
INPUT CHARACTERISTICS
Input Resistance
300 kΩ
Input Capacitance
1.5 pF
Input Common-Mode Voltage Range
–0.2 to +2
V
Common-Mode Rejection Ratio
VCM = 0 V to 1.5 V
66 74
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
RL = 10 kΩ to 1.5 V
0.03 to 2.97
V
RL = 1 kΩ to 1.5 V
0.1 to 2.9 0.05 to 2.95
V
RL = 50 Ω to 1.5 V
0.3 to 2.6 0.25 to 2.65
V
Output Current
TMIN to TMAX, VOUT = 0.5 V to 2.5 V
50 mA
Short-Circuit Current
Sourcing
50 mA
Sinking
70 mA
Capacitive Load Drive
G = +1
17 pF
POWER SUPPLY
Operating Range
3 12 V
Quiescent Current (Per Amplifier)
5.5 6.4 mA
Power Supply Rejection Ratio
VS– = 0 V to –1 V, or VS+ = 3 V to 4 V
68 80
dB
OPERATING TEMPERATURE RANGE
0 70 °C
Rev. E | Page 4 of 16
5 Page 
AD8042
12.0
VS = ±5V
11.5
11.0
VS = +5V
10.5
10.0
9.5
VS = +3V
9.0
8.5
8.0
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
Figure 23. Supply Current vs. Temperature
10
VS = 5V
0
–10
–20
–30
–40
–PSRR
–50
+PSRR
–60
–70
–80
–90
10k
100k
1M 10M
FREQUENCY (Hz)
Figure 24. PSRR vs. Frequency
100M 500M
10
9
8
7
6
5
4
3
2
1
0
0.1
VS = ±5V
RL = 2kΩ
G = –1
1 10
FREQUENCY (MHz)
Figure 25. Output Voltage vs. Frequency
100
50
VS = 5V
VOUT = 100mV STEP
40
30
G = +2
20
G = +3
10
0
0 20 40 60 80 100 120 140 160 180 200
LOAD CAPACITANCE (pF)
Figure 26. Overshoot vs. Load Capacitance
6
VS = 5V
5 RF = 2kΩ
RL = 2kΩ to 2.5V
4
3
G = +2
2
1
0
–1
G = +10
G = +2
RF = 200Ω
–2
G = +5
–3
–4
1 10 100
FREQUENCY (MHz)
Figure 27. Closed-Loop Gain vs. Frequency Response
500
–10
VS = 5V
–20 VIN = 0.6V p-p
G = +2
–30 RF = 1kΩ
–40
VOUT1
VOUT2
, RL
=
1kΩ
TO
2.5V
–50
VOUT1
VOUT2
, RL
=
150Ω
TO
2.5V
–60
–70
–80
–90
VOUT2
VOUT1
, RL
= 150Ω
TO
2.5V
–100
–110
0.1
VOUT2
VOUT1
, RL
=
1kΩ
TO
2.5V
1 10
FREQUENCY (MHz)
100 200
Figure 28. Crosstalk (Output-to-Output) vs. Frequency
Rev. E | Page 10 of 16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet AD8042.PDF ] | |
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