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AD8065 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8065
Beschreibung Op Amps
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 28 Seiten
AD8065 Datasheet, Funktion
Data Sheet
FEATURES
Qualified for automotive applications
FET input amplifier
1 pA input bias current
Low cost
High speed: 145 MHz, −3 dB bandwidth (G = +1)
180 V/µs slew rate (G = +2)
Low noise
7 nV/√Hz (f = 10 kHz)
0.6 fA/√Hz (f = 10 kHz)
Wide supply voltage range: 5 V to 24 V
Single-supply and rail-to-rail output
Low offset voltage 1.5 mV maximum
High common-mode rejection ratio: −100 dB
Excellent distortion specifications
SFDR −88 dBc @ 1 MHz
Low power: 6.4 mA/amplifier typical supply current
No phase reversal
Small packaging: SOIC-8, SOT-23-5, and MSOP-8
GENERAL DESCRIPTION
The AD8065/AD80661 FastFET™ amplifiers are voltage feedback
amplifiers with FET inputs offering high performance and ease
of use. The AD8065 is a single amplifier, and the AD8066 is a
dual amplifier. These amplifiers are developed in the Analog
Devices, Inc. proprietary XFCB process and allow exceptionally
low noise operation (7.0 nV/√Hz and 0.6 fA/Hz) as well as
very high input impedance.
With a wide supply voltage range from 5 V to 24 V, the ability to
operate on single supplies, and a bandwidth of 145 MHz, the
AD8065/AD8066 are designed to work in a variety of applications.
For added versatility, the amplifiers also contain rail-to-rail outputs.
Despite the low cost, the amplifiers provide excellent overall
performance. The differential gain and phase errors of 0.02%
and 0.02°, respectively, along with 0.1 dB flatness out to 7 MHz,
make these amplifiers ideal for video applications. Additionally,
they offer a high slew rate of 180 V/µs, excellent distortion (SFDR
of −88 dBc @ 1 MHz), extremely high common-mode rejection
of −100 dB, and a low input offset voltage of 1.5 mV maximum
under warmed up conditions. The AD8065/AD8066 operate
using only a 6.4 mA/amplifier typical supply current and are
capable of delivering up to 30 mA of load current.
1 Protected by U. S. Patent No. 6,262,633.
Rev. K
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
High Performance, 145 MHz
FastFET Op Amps
AD8065/AD8066
APPLICATIONS
Automotive driver assistance systems
Photodiode preamps
Filters
A/D drivers
Level shifting
Buffering
CONNECTION DIAGRAMS
AD8065
VOUT 1
5 +VS
AD8065
NC 1
8 NC
–VS 2
–IN 2
7 +VS
+IN 3
4 –IN
TOP VIEW
(Not to Scale)
+IN 3
6 VOUT
–VS 4 TOP VIEW 5 NC
(Not to Scale)
VOUT1 1
–IN1 2
+IN1 3
AD8066
8 +VS
7 VOUT2
6 –IN2
–VS 4
5 +IN2
TOP VIEW
(Not to Scale)
Figure 1.
The AD8065/AD8066 are high performance, high speed, FET
input amplifiers available in small packages: SOIC-8, MSOP-8,
and SOT-23-5. They are rated to work over the industrial
temperature range of −40°C to +85°C.
The AD8065WARTZ-REEL7 is fully qualified for automotive
applications. It is rated to operate over the extended temperature
range (−40°C to +105°C), up to a maximum supply voltage
range of ±5 V only.
24
21 G = +10
18
VO = 200mV p-p
15 G = +5
12
9
G = +2
6
3
G = +1
0
–3
–6
0.1
1 10 100
FREQUENCY (MHz)
Figure 2. Small Signal Frequency Response
1000
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2002–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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AD8065 Datasheet, Funktion
AD8065/AD8066
Data Sheet
SPECIFICATIONS ±12 V
@ TA = 25°C, VS = ±12 V, RL = 1 kΩ, unless otherwise noted.
Table 2.
Parameter
Conditions
Min Typ
Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VO = 0.2 V p-p (AD8065)
100 145
MHz
G = +1, VO = 0.2 V p-p (AD8066)
100 115
MHz
Bandwidth for 0.1 dB Flatness
Input Overdrive Recovery
G = +2, VO = 0.2 V p-p
G = +2, VO = 2 V p-p
G = +2, VO = 0.2 V p-p
G = +1, −12.5 V to +12.5 V
50 MHz
40 MHz
7 MHz
175 ns
Output Overdrive Recovery
G = −1, −12.5 V to +12.5 V
170 ns
Slew Rate
G = +2, VO = 4 V step
130 180
V/µs
Settling Time to 0.1%
G = +2, VO = 2 V step
55 ns
G = +2, VO = 10 V step
250 ns
NOISE/HARMONIC PERFORMANCE
SFDR
fC = 1 MHz, G = +2, VO = 2 V p-p
−100
dBc
Third-Order Intercept
Input Voltage Noise
fC = 5 MHz, G = +2, VO = 2 V p-p
fC = 1 MHz, G = +2, VO = 10 V p-p
fC = 10 MHz, RL = 100 Ω
f = 10 kHz
−67 dBc
−85 dBc
24 dBm
7 nV/√Hz
Input Current Noise
f = 10 kHz
1 fA/√Hz
Differential Gain Error
NTSC, G = +2, RL = 150 Ω
0.04 %
Differential Phase Error
NTSC, G = +2, RL = 150 Ω
0.03 Degrees
DC PERFORMANCE
Input Offset Voltage
VCM = 0 V, SOIC package
0.4 1.5 mV
Input Offset Voltage Drift
1 17 µV/°C
Input Bias Current
SOIC package
3 7 pA
Input Offset Current
TMIN to TMAX
25 pA
2 10 pA
TMIN to TMAX
2 pA
Open-Loop Gain
VO = ±10 V, RL = 1 kΩ
103 114
dB
INPUT CHARACTERISTICS
Common-Mode Input Impedance
1000 || 2.1
GΩ || pF
Differential Input Impedance
1000 || 4.5
GΩ || pF
Input Common-Mode Voltage Range
FET Input Range
−12 to +8.5
−12.0 to +9.5
V
Common-Mode Rejection Ratio
VCM = −1 V to +1 V
VCM = −1 V to +1 V (SOT-23)
−85 −100
−82 −91
dB
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
RL = 1 kΩ
−11.8 to +11.8 −11.9 to +11.9
V
Output Current
RL = 350 Ω
VO = 22 V p-p, SFDR ≥ −60 dBc, f = 500 kHz
−11.25 to +11.5
30
V
mA
Short-Circuit Current
120 mA
Capacitive Load Drive
30% overshoot G = +1
25 pF
POWER SUPPLY
Operating Range
5 24 V
Quiescent Current per Amplifier
6.6 7.4 mA
Power Supply Rejection Ratio
±PSRR
−84 −93
dB
Rev. K | Page 6 of 28

6 Page









AD8065 pdf, datenblatt
AD8065/AD8066
–30
–40 G = +2
–50
–60
–70
–80
–90
–100
HD2 RL = 150
HD2 RL = 1k
HD3 RL = 1k
HD3 RL = 150
–110
–120
0.1 1 10 100
FREQUENCY (MHz)
Figure 16. Harmonic Distortion vs. Frequency for Various Loads
(See Figure 43)
–30
–40 G = +2
VS = ±12V
–50 F = 1MHz
–60
–70 HD2 RL = 150
–80 HD3 RL = 150
–90
–100
–110
HD3 RL = 300
HD2 RL = 300
–120
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
OUTPUT AMPLITUDE (V p-p)
Figure 17. Harmonic Distortion vs. Amplitude for Various Loads VS = ±12 V
(See Figure 43)
50
45 VS = ±12V
RL = 100
40
VS = ±5V
35
30
VS = +5V
25
20
15
1
10
FREQUENCY (MHz)
Figure 18. Third-Order Intercept vs. Frequency and Supply Voltage
Data Sheet
–40
–50
–60
HD2 G = +2
–70 HD3 G = +2
HD2 G = +1
–80
–90
–100
HD3 G = +1
–110
0.1 1 10 100
FREQUENCY (MHz)
Figure 19. Harmonic Distortion vs. Frequency for Various Gains
(See Figure 42 and Figure 43)
–20
–30
VS = ±12V
G = +2
–40
HD2 VO = 20V p-p
–50 HD3 VO = 20V p-p
–60
HD2 VO = 10V p-p
–70
–80 HD3 VO = 10V p-p
–90
–100
HD2 VO = 2V p-p
–110
HD3 VO = 2V p-p
–120
0.1
1.0 10.0
FREQUENCY (MHz)
Figure 20. Harmonic Distortion vs. Frequency for Various Amplitudes
(See Figure 43)
100
10
1
10 100 1k 10k 100k 1M 10M 100M 1G
FREQUENCY (Hz)
Figure 21. Voltage Noise
Rev. K | Page 12 of 28

12 Page





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