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ADA4891-2 Datasheet(PDF) 1 Page - Analog Devices

Part # ADA4891-2
Description  Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

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Low Cost CMOS, High Speed,
Rail-to-Rail Amplifiers
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
FEATURES
High speed and fast settling
−3 dB bandwidth: 220 MHz (G = +1)
Slew rate: 170 V/μs
Settling time to 0.1%: 28 ns
Video specifications (G = +2, RL = 150 Ω)
0.1 dB gain flatness: 25 MHz
Differential gain error: 0.05%
Differential phase error: 0.25°
Single-supply operation
Wide supply range: 2.7 V to 5.5 V
Output swings to within 50 mV of supply rails
Low distortion: 79 dBc SFDR at 1 MHz
Linear output current: 125 mA at −40 dBc
Low power: 4.4 mA per amplifier
APPLICATIONS
Imaging
Consumer video
Active filters
Coaxial cable drivers
Clock buffers
Photodiode preamp
Contact image sensor and buffers
GENERAL DESCRIPTION
The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple),
and ADA4891-4 (quad) are CMOS, high speed amplifiers that
offer high performance at a low cost. The amplifiers feature true
single-supply capability, with an input voltage range that extends
300 mV below the negative rail.
In spite of their low cost, the ADA4891 family provides high
performance and versatility. The rail-to-rail output stage enables
the output to swing to within 50 mV of each rail, enabling maxi-
mum dynamic range.
The ADA4891 family of amplifiers is ideal for imaging applica-
tions, such as consumer video, CCD buffers, and contact image
sensor and buffers. Low distortion and fast settling time also
make them ideal for active filter applications.
The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are avail-
able in a wide variety of packages. The ADA4891-1 is available
in 8-lead SOIC and 5-lead SOT-23 packages. The ADA4891-2
is available in 8-lead SOIC and 8-lead MSOP packages. The
ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and
14-lead TSSOP packages. The amplifiers are specified to operate
over the extended temperature range of −40°C to +125°C.
CONNECTION DIAGRAMS
NC 1
–IN 2
+IN 3
–VS 4
NC
8
+VS
7
OUT
6
NC
5
ADA4891-1
NC = NO CONNECT
Figure 1. 8-Lead SOIC_N (R-8)
OUT 1
+IN 3
–VS 2
+VS
5
–IN
4
ADA4891-1
Figure 2. 5-Lead SOT-23 (RJ-5)
ADA4891-2
OUT1 1
–IN1 2
+IN1 3
–VS 4
+VS
8
OUT2
7
–IN2
6
+IN2
5
NC = NO CONNECT
Figure 3. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8)
PD1 1
OUT2
14
PD2 2
–IN2
13
PD3 3
+IN2
12
+VS 4
–VS
11
+IN1 5
+IN3
10
–IN1 6
–IN3
9
OUT1 7
OUT3
8
ADA4891-3
Figure 4. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14)
+VS
+IN2
OUT2
OUT4
+IN4
–VS
+IN3
OUT3
+IN1
OUT1 1
2
3
4
5
6
7
14
13
12
11
10
9
8
–IN1
–IN2
–IN4
–IN3
ADA4891-4
Figure 5. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14)


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