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AD8045 Folha de dados(PDF) 1 Page - Analog Devices

Nome de Peças AD8045
Descrição Electrónicos  Low Power, 1 nV/?숰z, G ??10 Stable, Rail-to-Rail Output Amplifier
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

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Low Power, 1 nV/√Hz, G ≥ 10 Stable,
Rail-to-Rail Output Amplifier
Data Sheet
ADA4895-2
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Low wideband noise
1 nV/√Hz
2.6 pA/√Hz
Low 1/f noise: 2 nV/√Hz at 10 Hz
Low distortion (SFDR): −96 dBc at 100 kHz, V
OUT = 2 V p-p
Low power: 3 mA per amplifier
Low input offset voltage: 350 µV maximum
High speed
236 MHz, −3 dB bandwidth (G = +10)
943 V/µs slew rate
22 ns settling time to 0.1%
Rail-to-rail output
Wide supply range: 3 V to 10 V
Disable feature
APPLICATIONS
Low noise preamplifier
Ultrasound amplifiers
PLL loop filters
High performance ADC drivers
DAC buffers
GENERAL DESCRIPTION
The ADA4895-2 is a dual, high speed voltage feedback amplifier
that is gain ≥ 10 stable with low input noise, rail-to-rail output,
and quiescent current of 3 mA per amplifier. With a 1/f noise of
2 nV/√Hz at 10 Hz and a spurious-free dynamic range of −72 dBc
at 2 MHz, the ADA4895-2 is an ideal solution in a variety of
applications, including ultrasound, low noise preamplifiers, and
drivers of high performance ADCs. The Analog Devices, Inc.,
proprietary next generation SiGe bipolar process and innovative
architecture enable this high performance amplifier.
The ADA4895-2 has a large signal bandwidth of 146 MHz at a gain
of +10 with a slew rate of 943 V/µs, and settles to 0.1% in 22 ns.
The wide supply voltage range (3 V to 10 V) of the ADA4895-2
makes this amplifier an ideal candidate for systems that require
high dynamic range, high gain, precision, and high speed.
The ADA4895-2 is available in a 10-lead MSOP package and
operates over the extended industrial temperature range of
−40°C to +125°C.
FUNCTIONAL BLOCK DIAGRAM
OUT1
1
–IN1
2
+IN1
3
–VS 4
DISABLE1
5
+VS
10
OUT2
9
–IN2
8
+IN2
7
DISABLE2
6
ADA4895-2
Figure 1. 10-Lead MSOP
0
1
2
3
4
5
0
16
8
24
32
40
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
VOLTAGE
CURRENT
Figure 2. Input Voltage and Current Noise vs. Frequency
Table 1. Other Low Noise Amplifiers1
Part No.
VN @ 1 kHz
(nV/√Hz)
VN @ 100 kHz
(nV/√Hz)
BW (MHz)
Supply
Voltage (V)
AD8021
4.2
2.1
490
5 to 24
AD8045
6
3
1000
3.3 to 12
AD8099
7
0.95
510
5 to 12
ADA4841-1/
ADA4841-2
2.2
2.1
80
2.7 to 12
ADA4896-2
1
1
230
3 to 10
ADA4897-1/
ADA4897-2
1
1
230
3 to 10
ADA4898-1/
ADA4898-2
0.9
0.9
65
10 to 32
ADA4899-1
1.4
1
600
5 to 12
1 See www.analog.com for the latest selection of low noise amplifiers.
COMPANION PRODUCTS
ADCs: AD7944 (14-bit), AD7985 (16-bit), AD7986 (18-bit)
Additional companion products on the ADA4895-2 product page


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