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KM4270 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 KM4270
功能描述  Dual, Low Cost, 2.7V and 5V, Rail-to-Rail I/O Amplifier
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

KM4270 数据表(HTML) 1 Page - Fairchild Semiconductor

  KM4270 Datasheet HTML 1Page - Fairchild Semiconductor KM4270 Datasheet HTML 2Page - Fairchild Semiconductor  
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Pr
eliminary
Preliminary
February 2001
KM4270
Dual, Low Cost, +2.7V and +5V,
Rail-to-Rail I/O Amplifier
Product Brief
Features at 2.7V
I
160
µA supply current per amplifier
I
4.9MHz bandwidth
I
Output swings to within 20mV of either rail
I
Input voltage range exceeds the rail by >250mV
I
5.3V/
µs slew rate
I
35mA short circuit output current
I
24nV/
√Hz input voltage noise
I
Directly replaces MAX4126, OPA2340, LMV822,
and TLV2462 in single supply applications
I
Available in SOIC and MSOP package options
Applications
I
Portable/battery-powered applications
I
PCMCIA, USB
I
Mobile communications, cellular phones, pagers
I
Notebooks and PDA’s
I
Sensor Interface
I
A/D buffer
I
Active filters
I
Signal conditioning
I
Portable test instruments
General Description
The KM4270 is a dual ultra-low cost, low power,
voltage feedback amplifier. At 5V, the KM4270 uses
only 160
µA of supply current per amplifier and is
designed to operate from a supply range of 2.5V to
5.5V. The input voltage range exceeds the negative
and positive rails. The KM4170 (single) and KM4470
(quad) are also available.
The KM4270 offers high bipolar performance at a low
CMOS price. The KM4270 offers superior dynamic
performance with a 4.9MHz small signal bandwidth
and 5.3V/
µs slew rate. The combination of low power,
high bandwidth, and rail-to-rail performance make
the KM4270 well suited for battery-powered com-
munication/computing systems.
© 2001 Fairchild Semiconductor
Corporation
www.fairchildsemi.com
Patents Pending
Outperforms the competition in
single-supply applications at a
lower cost!
Advertised 5V
KM4270
Competitors
Units
Specifications
A
B
C
D
G = 1 BW
4.3
5
5.5
5.6
6.4
MHz
Noise
27
22
25
24
11
nV/
√Hz
Slew rate
9
2
6.0
2
1.6
V/
µs
Supply current
160
850
750
250
550
µA
Available Packages
Ordering Information
Part No.
Package
Container
Pack Qty
Eval Bd*
KM4270IC8
SOIC-8
Rail
95
KEB006
KM4270IC8TR3
SOIC-8
Reel
2500
KEB006
KM4270IM8
MSOP-8
Rail
50
KEB010
KM4270IM8TR3
MSOP-8
Reel
4000
KEB010
Temperature range for all parts: -40°C to +85°C.
* Evaluation boards are available to aid in the evaluation of these products. See the full
data sheet or website for complete information.
-
+
-
+
1
2
3
4
Out1
-In1
+In1
-Vs
+Vs
Out2
-In2
+In2
8
7
6
5
SOIC
-
+
-
+
1
2
3
4
Out1
-In1
+In1
-Vs
+Vs
Out2
-In2
+In2
8
7
6
5
MSOP
MSOP-8
(not actual size)
SOIC-8
(not actual size)


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