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AD8045 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD8045
Description  3 nV/Hz Ultralow Distortion, High Speed Op Amp
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD8045 Datasheet(HTML) 1 Page - Analog Devices

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3 nV/√Hz Ultralow Distortion,
High Speed Op Amp
AD8045
Rev. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
FEATURES
Ultralow distortion
SFDR
−101 dBc @ 5 MHz
−90 dBc @ 20 MHz
−63 dBc @ 70 MHz
Third-order intercept
43 dBm @ 10 MHz
Low noise
3 nV/√Hz
3 pA/√Hz
High speed
1 GHz, −3 dB bandwidth (G = +1)
1350 V/µs slew rate
7.5 ns settling time to 0.1%
Standard and low distortion pinout
Supply current: 15 mA
Offset voltage: 1.0 mV max
Wide supply voltage range: 3.3 V to 12 V
APPLICATIONS
Instrumentation
IF and baseband amplifiers
Active filters
ADC drivers
DAC buffers
CONNECTION DIAGRAMS
1
2
5
6
7
8
NC
FEEDBACK
–IN
+IN
+VS
OUTPUT
NC
–VS
3
4
Figure 1. 8-Lead AD8045 LFCSP (CP-8)
1
FEEDBACK
2
–IN
3
+IN
–VS 4
8
+VS
NC
7
OUTPUT
NC
6
5
Figure 2. 8-Lead AD8045 SOIC/EP (RD-8)
GENERAL DESCRIPTION
The AD8045 is a unity gain stable voltage feedback amplifier
with ultralow distortion, low noise, and high slew rate. With a
spurious-free dynamic range of −90 dBc @ 20 MHz, the
AD8045 is an ideal solution in a variety of applications,
including ultrasound, ATE, active filters, and ADC drivers.
ADI’s proprietary next generation XFCB process and innovative
architecture enables such high performance amplifiers.
The AD8045 features a low distortion pinout for the LFCSP,
which improves second harmonic distortion and simplifies the
layout of the circuit board.
The AD8045 has 1 GHz bandwidth, 1350 V/µs slew rate, and
settles to 0.1% in 7.5 ns. With a wide supply voltage range (3.3 V
to 12 V) and low offset voltage (200 µV), the AD8045 is an ideal
candidate for systems that require high dynamic range, preci-
sion, and high speed.
The AD8045 amplifier is available in a 3 mm × 3 mm LFCSP
and the standard 8-lead SOIC. Both packages feature an
exposed paddle that provides a low thermal resistance path to
the PCB. This enables more efficient heat transfer, and increases
reliability. The AD8045 works over the extended industrial
temperature range (−40°C to +125°C).
FREQUENCY (MHz)
100
0.1
1
10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–120
–110
HD3 LFCSP
HD2 LFCSP
G = +1
VS =±5V
VOUT = 2V p-p
RL = 1kΩ
RS = 100Ω
Figure 3. Harmonic Distortion vs. Frequency for Various Packages


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