Dual 160 MHz
Rail-to-Rail Amplifier
AD8042
CONNECTION DIAGRAM
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
OUT1
1
8
+VS
–IN1
2
7
OUT2
+IN1
3
6
–IN2
–VS
4
5
+IN2
AD8042
01059-001
FEATURES
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 singlesupply, high speed analog-to-digital converters (ADCs).
APPLICATIONS
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.
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.
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
G = +1
CL = 5pF
RL = 2kΩ TO 2.5V
12
CLOSED-LOOP GAIN (dB)
9
G = +1
RL = 2kΩ TO 2.5V
5.0V
2.5V
6
3
0
–3
–6
01059-003
–9
–12
0V
1V
1µs
01059-002
–15
1
10
100
500
FREQUENCY (MHz)
Figure 3. Frequency Response
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.
Trademarks and registered trademarks are the property of their respective owners.
©2007 Analog Devices, Inc. All rights reserved.
AD8042
SPECIFICATIONS
TA = 25°C, VS = 5 V, RL = 2 kΩ to 2.5 V, unless otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth, VO < 0.5 V p-p
Bandwidth for 0.1 dB Flatness
Slew Rate
Full Power Response
Settling Time to 1%
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain Error (NTSC, 100 IRE)
Differential Phase Error (NTSC, 100 IRE)
Worst-Case Crosstalk
DC PERFORMANCE
Input Offset Voltage
Conditions
Min
Typ
G = +1
G = +2, RL = 150 Ω, RF = 200 Ω
G = –1, VOUT = 2 V step
VO = 2 V p-p
G = –1, VOUT = 2 V step
125
160
14
200
30
26
39
MHz
MHz
V/μs
MHz
ns
ns
–73
15
700
0.04
0.04
0.06
0.24
–63
dB
nV/√Hz
fA/√Hz
%
%
Degrees
Degrees
dB
130
fC = 5 MHz, VOUT = 2 V p-p, G = +2, RL = 1 kΩ
f = 10 kHz
f = 10 kHz
G = +2, RL = 150 Ω to 2.5 V
G = +2, RL = 75 Ω to 2.5 V
G = +2, RL = 150 Ω to 2.5 V
G = +2, RL = 75 Ω to 2.5 V
f = 5 MHz, RL = 150 Ω to 2.5 V
3
TMIN to TMAX
Offset Drift
Input Bias Current
12
1.2
TMIN to TMAX
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current (Per Amplifier)
Power Supply Rejection Ratio
OPERATING TEMPERATURE RANGE
RL = 1 kΩ
TMIN to TMAX
90
VCM = 0 V to 3.5 V
RL = 10 kΩ to 2.5 V
RL = 1 kΩ to 2.5 V
RL = 50 Ω to 2.5 V
TMIN to TMAX, VOUT = 0.5 V to 4.5 V
Sourcing
Sinking
G = +1
68
0.10 to 4.9
0.4 to 4.4
0.2
100
90
Rev. E | Page 3 of 16
72
−40
0.06
0.12
9
12
3.2
4.8
0.5
Unit
mV
mV
μV/°C
μA
μA
μA
dB
dB
300
1.5
−0.2 to +4
74
kΩ
pF
V
dB
0.03 to 4.97
0.05 to 4.95
0.36 to 4.45
50
90
100
20
V
V
V
mA
mA
mA
pF
3
VS– = 0 V to −1 V, or VS+ = 5 V to 6 V
Max
5.5
80
12
6.4
+85
V
mA
dB
°C
AD8042
TA = 25°C, VS = 3 V, RL = 2 kΩ to 1.5 V, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth, VO < 0.5 V p-p
Bandwidth for 0.1 dB Flatness
Slew Rate
Full Power Response
Settling Time to 1%
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain Error (NTSC, 100 IRE)
Differential Phase Error (NTSC, 100 IRE)
Worst-Case Crosstalk
DC PERFORMANCE
Input Offset Voltage
Conditions
Min
Typ
G = +1
G = +2, RL = 150 Ω, RF = 200 Ω
G = −1, VOUT = 2 V step
VO = 2 V p-p
G = −1, VOUT = 1 V step
120
140
11
170
25
30
45
MHz
MHz
V/μs
MHz
ns
ns
–56
16
500
0.10
0.10
0.12
0.27
–68
dB
nV/√Hz
fA/√Hz
%
%
Degrees
Degrees
dB
120
fC = 5 MHz, VOUT = 2 V p-p, G = −1, RL = 100 Ω
f = 10 kHz
f = 10 kHz
G = +2, RL = 150 Ω to 1.5 V, Input VCM = 1 V
RL = 75 Ω to 1.5 V, Input VCM = 1 V
G = +2, RL = 150 Ω to 1.5 V, Input VCM = 1 V
RL = 75 Ω to 1.5 V, Input VCM = 1 V
f = 5 MHz, RL = 1 kΩ to 1.5 V
3
TMIN to TMAX
Offset Drift
Input Bias Current
12
1.2
TMIN to TMAX
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current (Per Amplifier)
Power Supply Rejection Ratio
OPERATING TEMPERATURE RANGE
RL = 1 kΩ
TMIN to TMAX
90
VCM = 0 V to 1.5 V
RL = 10 kΩ to 1.5 V
RL = 1 kΩ to 1.5 V
RL = 50 Ω to 1.5 V
TMIN to TMAX, VOUT = 0.5 V to 2.5 V
Sourcing
Sinking
G = +1
66
0.1 to 2.9
0.3 to 2.6
0.2
100
90
Rev. E | Page 4 of 16
68
0
9
12
3.2
4.8
0.6
Unit
mV
mV
μV/°C
μA
μA
μA
dB
dB
300
1.5
–0.2 to +2
74
kΩ
pF
V
dB
0.03 to 2.97
0.05 to 2.95
0.25 to 2.65
50
50
70
17
V
V
V
mA
mA
mA
pF
3
VS– = 0 V to –1 V, or VS+ = 3 V to 4 V
Max
5.5
80
12
6.4
70
V
mA
dB
°C
AD8042
TA = 25°C, VS = ±5 V, RL = 2 kΩ to 0 V, unless otherwise noted.
Table 3.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth, VO < 0.5 V p-p
Bandwidth for 0.1 dB Flatness
Slew Rate
Full Power Response
Settling Time to 1%
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain Error (NTSC, 100 IRE)
Differential Phase Error (NTSC, 100 IRE)
Worst-Case Crosstalk
DC PERFORMANCE
Input Offset Voltage
Conditions
Min
Typ
G = +1
G = +2, RL = 150 Ω, RF = 200 Ω
G = −1, VOUT = 2 V step
VO = 2 V p-p
G = −1, VOUT = 2 V step
125
170
18
225
35
22
32
MHz
MHz
V/μs
MHz
ns
ns
–78
15
700
0.02
0.02
0.04
0.12
–63
dB
nV/√Hz
fA/√Hz
%
%
Degrees
Degrees
dB
145
fC = 5 MHz, VO = 2 V p-p, G = +2, RL = 1 kΩ
f = 10 kHz
f = 10 kHz
G = +2, RL = 150 Ω
G = +2, RL = 75 Ω
G = +2, RL = 150 Ω
G = +2, RL = 75 Ω
f = 5 MHz, RL = 150 Ω
3
TMIN to TMAX
Offset Drift
Input Bias Current
12
1.2
TMIN to TMAX
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current (Per Amplifier)
Power Supply Rejection Ratio
OPERATING TEMPERATURE RANGE
RL = 1 kΩ
TMIN to TMAX
90
VCM = –5 V to +3.5 V
RL = 10 kΩ
RL = 1 kΩ
RL = 50 Ω
TMIN to TMAX, VOUT = −4.5 V to +4.5 V
Sourcing
Sinking
G = +1
66
−4.8 to +4.8
−4 to +3.2
0.2
94
86
Rev. E | Page 5 of 16
68
−40
0.05
0.10
9.8
14
3.2
4.8
0.6
Unit
mV
mV
μV/°C
μA
μA
μA
dB
dB
300
1.5
−5.2 to +4
74
kΩ
pF
V
dB
−4.97 to +4.97
−4.9 to +4.9
−4.2 to +3.5
50
100
100
25
V
V
V
mA
mA
mA
pF
3
VS– = −5 V to −6 V, or VS+ = 5 V to 6 V
Max
6
80
12
7
+85
V
mA
dB
°C
AD8042
ABSOLUTE MAXIMUM RATINGS
Table 4.
1
1.3 W
0.9 W
±VS ± 0.5 V
±3.4 V
Observe Power
Derating Curves
−65°C to +125°C
300°C
While the AD8042 is internally short-circuit protected, this
may not be sufficient to guarantee that the maximum junction
temperature (150°C) is not exceeded under all conditions. To
ensure proper operation, it is necessary to observe the
maximum power derating curves.
2.0
8-LEAD PLASTIC-DIP PACKAGE
Specification is for the device in free air:
8-Lead PDIP: θJA = 90°C/W
8-Lead SOIC_N: θJA = 155°C/W.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
1.5
TJ = 150°C
1.0
8-LEAD SOIC PACKAGE
0.5
0
–50 –40 –30 –20 –10
01059-004
Storage Temperature Range (N, R)
Lead Temperature (Soldering, 10 sec)
Exceeding a junction temperature of 175°C for an extended
period can result in device failure.
Rating
12.6 V
MAXIMUM POWER DISSIPATION (W)
Parameter
Supply Voltage
Internal Power Dissipation1
8-Lead PDIP (N)
8-Lead SOIC_N (R)
Input Voltage (Common Mode)
Differential Input Voltage
Output Short-Circuit Duration
0
10
20
30
40
50
60
70
80
AMBIENT TEMPERATURE (°C)
Figure 4. Maximum Power Dissipation vs. Temperature
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
AD8042 is limited by the associated rise in junction temperature.
The maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of the
plastic, approximately 150°C. Exceeding this limit temporarily
can cause a shift in parametric performance due to a change in
the stresses exerted on the die by the package.
ESD CAUTION
Rev. E | Page 6 of 16
90
AD8042
OUTLINE DIMENSIONS
0.400 (10.16)
0.365 (9.27)
0.355 (9.02)
8
5
1
4
0.280 (7.11)
0.250 (6.35)
0.240 (6.10)
0.100 (2.54)
BSC
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.060 (1.52)
MAX
0.210 (5.33)
MAX
0.015
(0.38)
MIN
0.150 (3.81)
0.130 (3.30)
0.115 (2.92)
SEATING
PLANE
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
0.195 (4.95)
0.130 (3.30)
0.115 (2.92)
0.015 (0.38)
GAUGE
PLANE
0.430 (10.92)
MAX
0.005 (0.13)
MIN
0.014 (0.36)
0.010 (0.25)
0.008 (0.20)
0.070 (1.78)
0.060 (1.52)
0.045 (1.14)
070606-A
COMPLIANT TO JEDEC STANDARDS MS-001
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS.
Figure 44. 8-Lead Plastic Dual In-Line Package [PDIP]
Narrow Body (N-8)—Dimensions shown in inches and (millimeters)
5.00 (0.1968)
4.80 (0.1890)
8
1
5
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
SEATING
PLANE
6.20 (0.2441)
5.80 (0.2284)
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
0.25 (0.0099)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-A A
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
012407-A
4.00 (0.1574)
3.80 (0.1497)
Figure 45. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body (R-8)—Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model
AD8042AN
AD8042AR
AD8042AR-REEL
AD8042AR-REEL7
AD8042ARZ 1
AD8042ARZ-REEL1
AD8042ARZ-REEL71
AD8042ACHIPS
1
Temperature Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package Description
8-Lead PDIP
8-Lead SOIC_N
8-Lead SOIC_N, 13" Reel
8-Lead SOIC_N, 7" Reel
8-Lead SOIC_N
8-Lead SOIC_N, 13" Reel
8-Lead SOIC_N, 7" Reel
DIE
Z = RoHS Compliant Part.
Rev. E | Page 16 of 16
Package Option
N-8
R-8
R-8
R-8
R-8
R-8
R-8