Analog Devices AD8041 Datasheet
160 MHz Rail-to-Rail
FREQUENCY – MHz
VS = +5V
G = +2
R
F
= 400Ω
0
100
NORMALIZED GAIN – dB
80
60
40
20
0
+2
+1
–2
–1
–8
–7
–6
–5
–4
–3
a
FEATURES
Fully Specified for +3 V, +5 V, and 65 V Supplies
Output Swings Rail to Rail
Input Voltage Range Extends 200 mV Below Ground
No Phase Reversal with Inputs 1 V Beyond Supplies
Disable/Power-Down Capability
Low Power of 5.2 mA (26 mW on +5 V)
High Speed and Fast Settling on +5 V:
160 MHz –3 dB Bandwidth (G = +1)
160 V/ms Slew Rate
30 ns Settling Time to 0.1%
Good Video Specifications (R
Gain Flatness of 0.1 dB to 30 MHz
0.03% Differential Gain Error
0.038 Differential Phase Error
Low Distortion
–69 dBc Worst Harmonic @ 10 MHz
Outstanding Load Drive Capability
Drives 50 mA 0.5 V from Supply Rails
Cap Load Drive of 45 pF
APPLICATIONS
Power Sensitive High Speed Systems
Video Switchers
Distribution Amplifiers
A/D Driver
Professional Cameras
CCD Imaging Systems
Ultrasound Equipment (Multichannel)
Single-Supply Multiplexer
PRODUCT DESCRIPTION
The AD8041 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.
= 150 V, G = +2)
L
Amplifier with Disable
AD8041
CONNECTION DIAGRAM
8-Pin Plastic Mini-DIP and SOIC
NC
1
–INPUT
2
+INPUT
3
AD8041
–V
4
S
(Top View)
NC = NO CONNECT
The output voltage swing extends to within 50 mV of each rail,
providing the maximum output dynamic range. Additionally, it
features gain flatness of 0.1 dB to 30 MHz while offering differential gain and phase error of 0.03% and 0.03° on a single +5 V
supply. This makes the AD8041 ideal for professional video
electronics such as cameras, video switchers or any high speed
portable equipment. The AD8041’s low distortion and fast settling make it ideal for buffering high speed A-to-D converters.
The AD8041 has a high speed disable feature useful for multiplexing or for reducing power consumption (1.5 mA). The disable logic interface is compatible with CMOS or open-collector
logic. The AD8041 offers low power supply current of 5.8 mA
max and can run on a single +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 160 V/µs of slew
rate on a single +5 V supply make the AD8041 useful in many
general purpose high speed applications where dual power supplies of up to ±6 V and single supplies from +3 V to +12 V are
needed. The AD8041 is available in 8-pin plastic DIP and
SOIC over the industrial temperature range of –40°C to +85°C.
8
DISABLE
7
+V
OUTPUT
6
NC
5
S
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
5V
2.5V
0V
1V
200ns
Figure 1. Output Swing: Gain = –1, VS = +5 V
Figure 2. Frequency Response: Gain = +2, VS = +5 V
© Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700 Fax: 617/326-8703
AD8041–SPECIFICATIONS
(@ TA = +258C, VS = +5 V, RL = 2 kΩ to 2.5 V, unless otherwise noted)
AD8041A
Parameter Conditions Min Typ Max Units
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth, V
Bandwidth for 0.1 dB Flatness G = +2, R
Slew Rate G = –1, V
Full Power Response V
Settling Time to 0.1% G = –1, V
< 0.5 V p-p G = +1 130 160 MHz
O
= 2 V p-p 24 MHz
O
= 150 Ω 30 MHz
L
= 2 V Step 130 160 V/µs
O
= 2 V Step 35 ns
O
Settling Time to 0.01% 55 ns
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion f
Input Voltage Noise f = 10 kHz 16 nV/√
Input Current Noise f = 10 kHz 600 fA/√
Differential Gain Error (NTSC) G = +2, R
Differential Phase Error (NTSC) G = +2, R
= 5 MHz, VO = 2 V p-p, G = +2, RL = 1 kΩ –72 dB
C
= 150 Ω to 2.5 V 0.03 %
L
= 150 Ω to 2.5 V 0.03 Degrees
L
G = +2, R
= 75 Ω to 2.5 V 0.01 %
L
Hz
Hz
G = +2, RL = 75 Ω to 2.5 V 0.19 Degrees
DC PERFORMANCE
Input Offset Voltage 27mV
T
MIN–TMAX
8mV
Offset Drift 10 µV/°C
Input Bias Current 1.2 2 µA
T
MIN–TMAX
3 µA
Input Offset Current 0.2 0.5 µA
Open-Loop Gain R
= 1 kΩ 86 95 dB
L
T
MIN–TMAX
90 dB
INPUT CHARACTERISTICS
Input Resistance 160 kΩ
Input Capacitance 1.8 pF
Input Common-Mode Voltage Range –0.2 to 4 V
Common-Mode Rejection Ratio VCM = 0 V to 3.5 V 74 80 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing: R
Output Voltage Swing: R
Output Voltage Swing: R
Output Current V
= 10 kΩ 0.05 to 4.95 V
L
= 1 kΩ 0.35 to 4.75 0.1 to 4.9 V
L
= 50 Ω 0.4 to 4.4 0.3 to 4.5 V
L
= 0.5 V to 4.5 V 50 mA
OUT
Short Circuit Current Sourcing 90 mA
Sinking 150 mA
Capacitive Load Drive G = +1 45 pF
POWER SUPPLY
Operating Range 312V
Quiescent Current 5.2 5.8 mA
Quiescent Current (Disabled) 1.4 1.7 mA
Power Supply Rejection Ratio VS = 0, +5 V, ±1 V 72 80 dB
DISABLE CHARACTERISTICS V
Turn-Off Time R
Turn-On Time R
Off Isolation (Pin 8 Tied to –V
)R
S
Off Voltage (Device Disabled) <+V
On Voltage (Device Enabled) Open or +V
Specifications subject to change without notice.
= 2 V p-p @ 10 MHz, G = + 2
O
= RL = 2 kΩ 120 ns
F
= RL = 2 kΩ 230 ns
F
= 100 Ω, f = 5 MHz, G = +2, RF = 1 kΩ 70 dB
L
– 0.25 V
S
S
V
–2–
REV. 0
AD8041
SPECIFICATIONS
Parameter Conditions Min Typ Max Units
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth, V
Bandwidth for 0.1 dB Flatness G = +2, R
Slew Rate G = –1, V
Full Power Response V
Settling Time to 0.1% G = –1, V
Settling Time to 0.01% 55 ns
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion f
Input Voltage Noise f = 10 kHz 16 nV/√
Input Current Noise f = 10 kHz 600 fA/√
Differential Gain Error (NTSC) G = +2, R
Differential Phase Error (NTSC) G = +2, RL = 150 Ω to 1.5 V, Input VCM = 1 V 0.05 Degrees
DC PERFORMANCE
Input Offset Voltage 27mV
Offset Drift 10 µV/°C
Input Bias Current 1.2 2.3 µA
Input Offset Current 0.2 0.6 µA
Open-Loop Gain R
INPUT CHARACTERISTICS
Input Resistance 160 kΩ
Input Capacitance 1.8 pF
Input Common-Mode Voltage Range –0.2 to 2 V
Common-Mode Rejection Ratio VCM = 0 V to 1.5 V 72 80 dB
(@ TA = +258C, VS = +3 V, RL = 2 kΩ to 1.5 V, unless otherwise noted)
AD8041A
< 0.5 V p-p G = +1 120 150 MHz
O
= 2 V p-p 20 MHz
O
= 5 MHz, VO = 2 V p-p, G = –1, RL = 100 Ω –55 dB
C
T
MIN–TMAX
T
MIN–TMAX
= 1 kΩ 85 94 dB
L
T
MIN–TMAX
= 150 Ω 25 MHz
L
= 2 V Step 120 150 V/µs
O
= 2 V Step 40 ns
O
= 150 Ω to 1.5 V, Input VCM = 1 V 0.07 %
L
8mV
3 µA
89 dB
Hz
Hz
OUTPUT CHARACTERISTICS
Output Voltage Swing: R
Output Voltage Swing: R
Output Voltage Swing: R
Output Current V
= 10 kΩ 0.05 to 2.95 V
L
= 1 kΩ 0.45 to 2.7 0.1 to 2.9 V
L
= 50 Ω 0.5 to 2.6 0.25 to 2.75 V
L
= 0.5 V to 2.5 V 50 mA
OUT
Short Circuit Current Sourcing 70 mA
Sinking 120 mA
Capacitive Load Drive G = +1 40 pF
POWER SUPPLY
Operating Range 312V
Quiescent Current 5.0 5.6 mA
Quiescent Current (Disabled) 1.3 1.5 mA
Power Supply Rejection Ratio VS = 0, +3 V, ±0.5 V 68 80 dB
DISABLE CHARACTERISTICS V
Turn-Off Time R
Turn-On Time R
Off Isolation (Pin 8 Tied to –V
)R
S
Off Voltage (Device Disabled) <+V
On Voltage (Device Enabled) Open or +V
Specifications subject to change without notice.
= 2 V p-p @ 10 MHz, G = +2
O
= RL = 2 kΩ 90 ns
F
= RL = 2 kΩ 170 ns
F
= 100 Ω, f = 5 MHz, G = +2, RF = 1 kΩ 70 dB
L
– 0.25 V
S
S
V
REV. 0
–3–
AD8041–SPECIFICATIONS
(@ TA = +258C, VS = 65 V, RL = 2 kΩ to 0 V, unless otherwise noted)
AD8041A
Parameter Conditions Min Typ Max Units
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth, V
Bandwidth for 0.1 dB Flatness G = +2, R
Slew Rate G = –1, V
Full Power Response V
Settling Time to 0.1% G = –1, V
< 0.5 V p-p G = +1 140 170 MHz
O
= 2 V p-p 26 MHz
O
= 150 Ω 32 MHz
L
= 2 V Step 140 170 V/µs
O
= 2 V Step 30 ns
O
Settling Time to 0.01% 50 ns
NOISE/DISTORTION PERFORMANCE
Total Harmonic Distortion f
Input Voltage Noise f = 10 kHz 16 nV/√
Input Current Noise f = 10 kHz 600 fA/√
Differential Gain Error (NTSC) G = +2, R
Differential Phase Error (NTSC) G = +2, R
= 5 MHz, VO = 2 V p-p, G = +2, RL = 1 kΩ –77 dB
C
= 150 Ω 0.02 %
L
= 150 Ω 0.03 Degrees
L
G = +2, R
= 75 Ω 0.02 %
L
Hz
Hz
G = +2, RL = 75 Ω 0.10 Degrees
DC PERFORMANCE
Input Offset Voltage 27mV
T
MIN–TMAX
8mV
Offset Drift 10 µV/°C
Input Bias Current 1.2 2.3 µA
T
MIN–TMAX
3 µA
Input Offset Current 0.2 0.6 µA
Open-Loop Gain R
= 1 kΩ 90 99 dB
L
T
MIN–TMAX
95 dB
INPUT CHARACTERISTICS
Input Resistance 160 kΩ
Input Capacitance 1.8 pF
Input Common-Mode Voltage Range –5.2 to 4 V
Common-Mode Rejection Ratio VCM = –5 V to 3.5 V 72 80 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing: R
Output Voltage Swing: R
Output Voltage Swing: R
Output Current V
= 10 kΩ –4.95 to +4.95 V
L
= 1 kΩ –4.45 to +4.6 –4.8 to +4.8 V
L
= 50 Ω –4.3 to +3.2 –4.5 to +3.8 V
L
= –4.5 V to 4.5 V 50 mA
OUT
Short Circuit Current Sourcing 100 mA
Sinking 160 mA
Capacitive Load Drive G = +1 50 pF
POWER SUPPLY
Operating Range 312V
Quiescent Current 5.8 6.5 mA
Quiescent Current (Disabled) 1.6 2.2 mA
Power Supply Rejection Ratio VS = –5, +5 V, ±1 V 68 80 dB
DISABLE CHARACTERISTICS V
Turn-Off Time R
Turn-On Time R
Off Isolation (Pin 8 Tied to –V
)R
S
Off Voltage (Device Disabled) <+V
On Voltage (Device Enabled) Open or +V
Specifications subject to change without notice.
= 2 V p-p @ 10 MHz, G = +2
O
= 2 kΩ 120 ns
F
= 2 kΩ 320 ns
F
= 100 Ω, f = 5 MHz, G = +2, RF = 1 kΩ 70 dB
L
– 0.25 V
S
S
–4–
REV. 0
AD8041
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +12.6 V
Internal Power Dissipation
2
1
Plastic Package (N) . . . . . . . . . . . . . . . . . . . . . . . 1.3 Watts
Small Outline Package (R) . . . . . . . . . . . . . . . . . . 0.9 Watts
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ±V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ±3.4 V
Output Short Circuit Duration
. . . . . . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range N, R . . . . . . . . –65°C to +125°C
Operating Temperature Range (A Grade) . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . +300°C
NOTES
1
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and 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.
2
Specification is for the device in free air:
8-Pin Plastic Package: θJA = 90°C/Watt
8-Pin SOIC Package: θJA = 160°C/Watt.
ORDERING GUIDE
Temperature Package
Model Range Option
AD8041AN –40°C to +85°C 8-Pin Plastic DIP
AD8041AR –40°C to +85°C 8-Pin Plastic SOIC
AD8041AR-REEL REEL-SOIC
AD8041-EB Evaluation Board
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
AD8041 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 may cause a shift in parametric performance due to a
change in the stresses exerted on the die by the package. Exceeding a junction temperature of +175°C for an extended period can result in device failure.
While the AD8041 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-PIN MINI-DIP PACKAGE
1.5
1.0
0.5
MAXIMUM POWER DISSIPATION – Watts
0
–50 90–40 –30 –20 –10 0 10 20 30 50 60 70 8040
8-PIN SOIC PACKAGE
AMBIENT TEMPERATURE – °C
TJ = +150°C
Figure 3. Maximum Power Dissipation vs. Temperature
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8041 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.
REV. 0
–5–
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