AD8066AR Analog Devices Inc, AD8066AR Datasheet - Page 20
![IC OPAMP VF R-R DUAL LN LP 8SOIC](/photos/5/66/56684/505-8-soic_sml.jpg)
AD8066AR
Manufacturer Part Number
AD8066AR
Description
IC OPAMP VF R-R DUAL LN LP 8SOIC
Manufacturer
Analog Devices Inc
Series
FastFET™r
Datasheet
1.AD8065ARTZ-REEL7.pdf
(28 pages)
Specifications of AD8066AR
Slew Rate
180 V/µs
Mounting Type
Surface Mount
Rohs Status
RoHS non-compliant
Design Resources
Precision, Bipolar Configuration for the AD5426/32/43 8-Bit to12-Bit DACs (CN0036) Precision, Bipolar, Configuration for AD5450/1/2/3 8-14bit Multiplying DACs (CN0053)
Amplifier Type
Voltage Feedback
Number Of Circuits
2
Output Type
Rail-to-Rail
-3db Bandwidth
145MHz
Current - Input Bias
3pA
Voltage - Input Offset
400µV
Current - Supply
6.6mA
Current - Output / Channel
30mA
Voltage - Supply, Single/dual (±)
5 V ~ 24 V, ±2.5 V ~ 12 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Op Amp Type
Voltage Feedback
No. Of Amplifiers
2
Bandwidth
115MHz
No. Of Pins
8
Single Supply Voltage Min (+v)
5V
Settling Time
55ns
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Manufacturer:
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Quantity:
20 000
Part Number:
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Manufacturer:
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Quantity:
20 000
Company:
Part Number:
AD8066ARMZ-REEL7
Manufacturer:
AD
Quantity:
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Part Number:
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Part Number:
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Quantity:
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AD8065/AD8066
THEORY OF OPERATION
The AD8065/AD8066 are voltage feedback operational amplifiers
that combine a laser-trimmed JFET input stage with the Analog
Devices eXtra Fast Complementary Bipolar (XFCB) process,
resulting in an outstanding combination of precision and speed.
The supply voltage range is from 5 V to 24 V. The amplifiers feature
a patented rail-to-rail output stage capable of driving within 0.5 V
of either power supply while sourcing or sinking up to 30 mA.
Also featured is a single-supply input stage that handles common-
mode signals from below the negative supply to within 3 V of the
positive rail. Operation beyond the JFET input range is possible
because of an auxiliary bipolar input stage that functions with
input voltages up to the positive supply. The amplifiers operate as
if they have a rail-to-rail input and exhibit no phase reversal
behavior for common-mode voltages within the power supply.
With voltage noise of 7 nV/√Hz and −88 dBc distortion for
1 MHz, 2 V p-p signals, the AD8065/AD8066 are a great choice
for high resolution data acquisition systems. Their low noise,
sub-pA input current, precision offset, and high speed make
them superb preamps for fast photodiode applications. The
speed and output drive capability of the AD8065/AD8066 also
make them useful in video applications.
CLOSED-LOOP FREQUENCY RESPONSE
The AD8065/AD8066 are classic voltage feedback amplifiers
with an open-loop frequency response that can be approximated as
the integrator response shown in Figure 53. Basic closed-loop
frequency response for inverting and noninverting configurations
can be derived from the schematics shown.
80
60
40
20
0
R
V
G
I
0.01
Figure 53. Open-Loop Gain vs. Frequency and Basic Connections
V
E
R
F
A
0.1
FREQUENCY (MHz)
A = (2π ×
V
O
Rev. J | Page 20 of 28
f
1
crossover
)/s
NONINVERTING CLOSED-LOOP FREQUENCY
RESPONSE
Solving for the transfer function
where f
gain equals 0 db
At dc
Closed-loop −3 dB frequency
INVERTING CLOSED-LOOP FREQUENCY
RESPONSE
At dc
Closed-loop −3 dB frequency
10
V
I
V
V
V
V
f
f
V
V
−
V
V
−3
O
O
I
I
crossover
3dB
O
O
I
I
dB
=
=
=
=
=
(
s
=
R
R
−
R
(
G
f
R
is the frequency where the amplifier’s open-loop
F
crossover
100
F
f
R
R
F
R
crossover
2
+
G
+
F
V
π
G
+
R
−
E
R
f
crossover
×
R
2
G
G
R
π
G
)
F
×
f
s
crossover
)
×
A
+
+
R
×
f
F
2
2
crossover
R
= 65MHz
R
π
π
+
F
G
×
×
R
R
(
+
R
G
G
f
f
G
crossover
crossover
R
×
V
+
G
O
R
R
F
F
×
×
)
R
R
G
G