Scheduled Release – April 2000
Product Brief
KM4112
50mA, Low Cost, +2.7V & +5V, 9MHz Rail-to-Rail Amplifier
March 2000
Preliminary
Features
s
s
s
s
s
s
s
s
s
s
s
50mA supply current
9MHz bandwidth
Fully specified at +2.7V and +5V supplies
Output voltage range: 0.03V to 4.95V; Vs = +5
Input voltage range: -0.3V to +3.8V; Vs = +5
12V/ms slew rate
±4mA linear output current
±6mA short circuit output current
30nV/ÖHz input voltage noise
Competes with low power CMOS amplifiers
Small package options (SOIC and SOT23)
Outperforms the competition in
single-supply applications at a
lower cost!
Advertised
Specifications
G = 1 BW
Noise
Slew rate
Supply current
KM4112
9
30
12
50
Applications
s
s
s
s
s
Typical Performance Plot
Portable/battery-powered applications
A/D buffer
Active filters
Signal conditioning
Portable test instruments
General Description
The KM4112 is an ultra-low power, low cost, voltage feed-
back amplifier. The KM4112 uses only 50mA of supply
current and is designed to operate on +2.7V, +5V, or
±2.5V supplies. The input voltage range extends 300mV
below the negative rail and 1.2V below the positive rail.
The KM4112 offers high bipolar performance at a low CMOS
price. The KM4112 offers superior dynamic performance
with a 9MHz small signal bandwidth and 12V/ms slew rate.
The combination of low power, high bandwidth, and rail-
to-rail performance make the KM4112 well suited for
battery-powered communication/computing systems.
P
e
r
m
i
l
i
a
n
TBD
Temperature
-40°C to +85°C
-40°C to +85°C
Typical CMOS
Amplifier
1
30
1
50
y
r
Units
MHz
nV/ÖHz
V/ms
mA
Ordering Information
Part No.
KM4112IT5
KM4112IC8
Package
5-pin SOT23
8-pin SOIC
Eval. Board*
KEB002
KEB003
*Evaluation boards are available to aid in the evaluation of these products. See the full data
sheet or website for complete ordering information.
For additional information or a complete data sheet,
visit us at
www.kotamicrocircuits.com
or call us at
970.667.7373 or call toll free at 1.877.667.7373.
SOT23-5 shown (not actual size)
other packages available
ISO-9001 Certified
© 2000 KOTA Microcircuits, Inc.
Printed in the U.S.A.
http://www.kotamicrocircuits.com
Patents Pending
Scheduled Release – April 2000
KM4112
Typical Specifications
Electrical Characteristics
(G = +2, R
f
= 10kW, R
L
= 10kW to V
s
/2, T
a
= +25°C, unless noted)
PARAMETERS
Frequency Domain Response
-3dB bandwidth
full power bandwidth
gain bandwidth product
Time Domain Response
rise and fall time
settling time to 0.1%
overshoot
slew rate
CONDITIONS
TYP
Vs = +2.7V
Preliminary
Available Packages
TYP
Vs = +5V
UNITS
Out
1
2
SOT23-5
5
+V
s
G = +1, V
o
= 0.2V
pp
G = +2, V
o
= 0.2V
pp
G = +2, V
o
= 2V
pp
x
x
x
x
y
x
y
x
y
y
x
x
x
x
x
x
y
x
x
x
x
9
3.5
2.7
4
y
x
y
12
y
y
x
30
x
0.5
2
0.2
0.1
0.02
63
70
50
MHz
MHz
MHz
MHz
ns
ns
%
V/ms
dBc
dBc
%
nV/Hz
pA/Hz
mV
mV/°C
mA
nA/°C
mA
dB
dB
mA
W
pF
V
dB
-V
s
+In
-
+
3
4
-In
Distortion and Noise Response
2nd harmonic distortion
3rd harmonic distortion
THD
input voltage noise
input current noise
DC Performance
input offset voltage
average drift
input bias current
average drift
input offset current
power supply rejection ratio
open loop gain
quiescent current
Pr
2V
2V
2V
2V
step
step
step
step
SOIC
NC
-In
+In
-V
s
1
2
3
4
-
+
8
7
6
5
NC
+V
s
Out
NC
el
DC
R
L
= 10kW to V
s
/2
R
L
= 2kW to V
s
/2
2V
pp
, 5MHz
2V
pp
, 5MHz
2V
pp
, 5MHz
>1MHz
>1MHz
Input Characteristics
input resistance
input capacitance
input common mode voltage range
common mode rejection ratio
DC
Output Characteristics
output voltage swing
linear output current
short circuit output current
power supply operating range
*x and y = TBD
im
x
x
x
x
Typical Circuit Configuration
+V
s
6.8mF
+
x
x
-0.3 to 3.8
72
0.03 to 2.65 0.03 to 4.95
x
x
x
±4
x
±6
2.5 to 5.5
in
V
V
mA
mA
V
In
+
-
0.01mF
Out
R
f
Absolute Maximum Ratings
supply voltage
maximum junction temperature
storage temperature range
lead temperature (10 sec)
operating temperature range
input voltage range
internal power dissipation
q
ja
for 5 lead SOT23
q
ja
for 8 lead SOIC
0 to +6V
+175°C
-65°C to +150°C
+300°C
-40° to +85°C
±V
s
see power derating curves in the full data sheet
256°C/W
152°C/W
For additional information or a complete data sheet,
visit us at
www.kotamicrocircuits.com
or call us
at 970.667.7373 or call toll free at 1.877.667.7373.
ar
KM4112
R
g
y
Life Support Policy
KOTA’s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of KOTA Microcircuits, Inc. As used herein:
1. Life support devices or systems are devices or systems which, a) are intended for surgical implant into the body, or b) support or sustain life, and whose failure to
perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device
or system, or to affect its safety or effectiveness.
KOTA does not assume any responsibility for use of any circuitry described, and KOTA reserves the right at any time without notice to change said circuitry and specifications.
