February 2001
KM4270
Product Brief
Dual, Low Cost, +2.7V and +5V,
Rail-to-Rail I/O Amplifier
Preliminary
Outperforms the competition in
single-supply applications at a
SOIC-8
(not actual size)
MSOP-8
(not actual size)
lower cost!
Advertised 5V
Specifications
G = 1 BW
Noise
Slew rate
Supply current
KM4270
4.3
27
9
160
A
5
22
2
850
Competitors
B
C
5.5 5.6
25
24
6.0
2
750 250
Features at 2.7V
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I
I
I
I
I
I
I
I
160碌A(chǔ) supply current per amplifier
4.9MHz bandwidth
Output swings to within 20mV of either rail
Input voltage range exceeds the rail by >250mV
5.3V/碌s slew rate
35mA short circuit output current
24nV/鈭欻z input voltage noise
Directly replaces MAX4126, OPA2340, LMV822,
and TLV2462 in single supply applications
Available in SOIC and MSOP package options
Available Packages
SOIC
Out1
1
2
3
4
8
7
-
+
Applications
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Portable/battery-powered applications
PCMCIA, USB
Mobile communications, cellular phones, pagers
Notebooks and PDA鈥檚
Sensor Interface
A/D buffer
Active filters
Signal conditioning
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碌A(chǔ) 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/碌s 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.
漏 2001 Fairchild Semiconductor
Corporation
Patents Pending
P
e
r
m
i
l
-In1
+In1
-V
s
i
-
+
a
n
+V
s
Out1
Out2
-In2
+In2
-In1
+In1
-V
s
6
5
y
r
D
6.4
11
1.6
550
Units
MHz
nV/鈭欻z
V/碌s
碌A(chǔ)
MSOP
8
-
+
1
2
3
4
+V
s
Out2
-In2
+In2
7
-
+
6
5
Ordering Information
Part No.
Package
KM4270IC8
SOIC-8
KM4270IC8TR3
SOIC-8
KM4270IM8
MSOP-8
KM4270IM8TR3 MSOP-8
Container
Rail
Reel
Rail
Reel
Pack Qty
95
2500
50
4000
Eval Bd*
KEB006
KEB006
KEB010
KEB010
Temperature range for all parts: -40擄C to +85擄C.
* Evaluation boards are available to aid in the evaluation of these products. See the full
data sheet or website for complete information.
www.fairchildsemi.com
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