www.fairchildsemi.com
KM4100/KM4101
Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers
Features
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General Description
The KM4100 (single) and KM4101 (single with disable)
are low cost, voltage feedback amplifiers. These amplifiers
are 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 KM4100 offers superior dynamic performance with
a 260MHz small signal bandwidth and 150V/µs slew rate.
The combination of low power, high output current
drive, and rail-to-rail performance make the KM4100
well suited for battery-powered communication/
computing systems.
The combination of low cost and high performance
make the KM4100 suitable for high volume applications in
both consumer and industrial applications such as
wireless phones, scanners, and color copiers.
Output Swing
260MHz bandwidth
Fully specified at +2.7V and +5V supplies
Output voltage range:
0.036V to 4.953V; Vs = +5; RL = 2kΩ
Input voltage range: -0.3V to +3.8V; Vs = +5
150V/µs slew rate
4.2mA supply current
Power down to Is = 127µA (KM4101)
±60mA linear output current
±90mA output short circuit current
Directly replaces AD8051 and LM7131 in single
supply applications
Small package options (SOT-23, SOIC)
Applications
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KM4100/KM4101 Packages
SOT23-5 (KM4100)
Out
-V
s
+In
1
2
3
-
Output Voltage (0.5V/div)
A/D driver
Active filters
CCD imaging systems
CD/DVD ROM
Coaxial cable drivers
High capacitive load driver
Portable/battery-powered applications
Twisted pair driver
Video driver
2.7
SOT23-6 (KM4101)
+V
s
Out
-V
s
1
2
3
-
5
6
5
4
+V
s
DIS
-In
0
Time (0.5µs/div)
V
s
= +2.7V
R
L
= 2kΩ
G = -1
+
SOIC (KM4100)
NC
+In
-V
s
-In
1
2
3
4
+
-
+
4
-In
+In
SOIC (KM4101)
+V
s
Out
NC
DIS
NC
+In
-V
s
-In
1
2
3
4
+
-
8
7
6
5
8
7
6
5
+V
s
Out
NC
DIS
REV. 1C March 2005
DATA SHEET
KM4100/KM4101
KM4100/KM4101 Electrical Characteristics
Parameters
Case Temperature
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
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
quiescent current (disabled)
Input Characteristics
input resistance
input capacitance
input common mode voltage range
common mode rejection ratio
Disable Characteristics (KM4101)
turn on time
turn off time
off isolation
Output Characteristics
output voltage swing
linear output current
short circuit output current
power supply operating range
G = +1, Vo = 0.05V
pp
G = +2, Vo = 0.2V
pp
G = +2, Vo = 2V
pp
0.2V step
1V step
0.2V step,
2.7V step, G = -1
1V
pp
, 5MHz
1V
pp
, 5MHz
1V
pp
, 5MHz
>1MHz
>1MHz
Conditions
(V
s
= +2.7V, G = 2, R
L
= 2kΩ to V
s
/2; unless noted)
TYP
+25°C
215
85
36
86
3.7
40
9
140
86
85
76
16
1.3
-1.6
10
3
7
0
57
75
3.9
58
4.3
1.5
-0.3 to 1.5
87
150
25
75
0.023 to 2.66
0.025 to 2.653
0.1 to 2.6
0.065 to 2.55
0.3 to 2.325
±60
±55
±90
2.7
2.5 to 5.5
±8
±8
±1
52
65
5
100
Min & Max
+25°C
MHz
MHz
MHz
MHz
ns
ns
%
V/µs
dBc
dBc
dB
nV/√Hz
pA/√Hz
mV
µV/°C
µA
nA/°C
µA
dB
dB
mA
µA
MΩ
pF
V
dB
ns
ns
dB
V
V
V
mA
mA
mA
V
1
1
1
1
UNITS
NOTES
1
2
2
2
2
2
2
2
DC
DC, V
cm
= 0V to V
s
- 1.5
72
2
5MHz, R
L
= 100Ω
R
L
= 10kΩ to V
s
/2
R
L
= 2kΩ to V
s
/2
R
L
= 150Ω to V
s
/2
-40°C to +85°C
2
2
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
NOTES:
1) Rf = 1kΩ was used used for optimal performance. (For G = +1, Rf = 0)
2) 100% tested at +25°C.
Absolute Maximum Ratings
supply voltage
0 to +6V
maximum junction temperature
+175°C
-65°C to +150°C
storage temperature range
lead temperature (10 sec)
+300°C
operating temperature range (recommended)
-40°C to +85°C
+V
s
+0.5V; -V
s
-0.5V
input voltage range
internal power dissipation
see power derating curves
Package Thermal Resistance
Package
5 lead SOT23
6 lead SOT23
8 lead SOIC
θ
JA
256°C/W
230°C/W
152°C/W
2
REV. 1C March 2005
KM4100/KM4101
DATA SHEET
KM4100/KM4101 Electrical Characteristics
Parameters
Case Temperature
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
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
quiescent current (disabled)
Input Characteristics
input resistance
input capacitance
input common mode voltage range
common mode rejection ratio
Disable Characteristics (KM4101)
turn on time
turn off time
off isolation
Output Characteristics
output voltage swing
linear output current
short circuit output current
power supply operating range
G = +1, Vo = 0.05V
pp
G = +2, Vo = 0.2V
pp
G = +2, Vo = 2V
pp
0.2V step
2V step
0.2V step,
5V step, G = -1
2V
pp
, 5MHz
2V
pp
, 5MHz
2V
pp
, 5MHz
>1MHz
>1MHz
Conditions
(V
s
= +5V, G = 2, R
L
= 2kΩ to V
s
/2; unless noted)
TYP
+25°C
260
90
40
90
3.6
40
7
150
70
78
68
16
1.3
1.4
10
3
7
0
57
78
4.2
127
4.3
1.5
-0.3 to 3.8
87
150
25
75
0.027 to 4.97
0.036 to 4.953
0.1 to 4.9
0.12 to 4.8
0.3 to 4.625
±60
±55
±90
5
2.5 to 5.5
±8
±8
±0.8
52
68
5.2
170
Min & Max
+25°C
MHz
MHz
MHz
MHz
ns
ns
%
V/µs
dBc
dBc
dB
nV/√Hz
pA/√Hz
mV
µV/°C
µA
nA/°C
µA
dB
dB
mA
µA
MΩ
pF
V
dB
ns
ns
dB
V
V
V
mA
mA
mA
V
1
1
1
1
UNITS
NOTES
1
2
2
2
2
2
2
2
DC
DC, V
cm
= 0V to V
s
- 1.5
72
2
5MHz, R
L
= 100Ω
R
L
= 10kΩ to V
s
/2
R
L
= 2kΩ to V
s
/2
R
L
= 150Ω to V
s
/2
-40°C to +85°C
2
2
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
NOTES:
1) Rf = 1kΩ was used used for optimal performance. (For G = +1, Rf = 0)
2) 100% tested at +25°C.
REV. 1C March 2005
3
DATA SHEET
KM4100/KM4101
KM4100/KM4101 Performance Characteristics
(V
s
= +5V, G = 2, R
f
= 2kΩ, R
L
= 2kΩ to V
s
/2; unless noted)
Non-Inverting Freq. Response V
s
= +5V
Normalized Magnitude (1dB/div)
G=2
R
f
= 1kΩ
G = 10
R
f
= 2kΩ
Normalized Magnitude (1dB/div)
G=1
R
f
= 0
Inverting Freq. Response V
s
= +5V
G = -2
R
f
= 2kΩ
G = -1
R
f
= 2kΩ
G=5
R
f
= 2kΩ
G = -10
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
0.1
1
Non-Inverting Freq. Response V
s
= +2.7
Frequency (MHz)
10
100
0.1
Normalized Magnitude (1dB/div)
Normalized Magnitude (1dB/div)
G=2
R
f
= 1kΩ
G=1
R
f
= 0
Inverting Freq. Response V
s
= +2.7
G = -2
R
f
= 2kΩ
G = -10
R
f
= 2kΩ
G = -1
R
f
= 2kΩ
Frequency (MHz)
1
10
100
G = 10
R
f
= 2kΩ
G=5
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
0.1
1
Frequency Response vs. C
L
Frequency (MHz)
10
100
0.1
Large Signal Frequency Response
Frequency (MHz)
1
10
100
Magnitude (1dB/div)
C
L
= 100pF
R
s
= 25Ω
Magnitude (1dB/div)
C
L
= 50pF
R
s
= 33Ω
V
o
= 1V
pp
-
1kΩ
+
1kΩ
R
s
C
L
R
L
C
L
= 20pF
R
s
= 20Ω
V
o
= 2V
pp
C
L
= 10pF
R
s
= 0Ω
0.1
1
Frequency Response vs. Temperature
Frequency (MHz)
10
100
0.1
100
1
Frequency (MHz)
10
Voltage Noise (nV/√Hz)
90
80
70
60
50
40
30
20
10
0
Input Voltage Noise
Frequency (MHz)
1
10
100
Magnitude (0.5dB/div)
100
1k
Frequency (Hz)
10k
100k
1M
4
REV. 1C March 2005
KM4100/KM4101
DATA SHEET
KM4100/KM4101 Performance Characteristics
(V
s
= +5V, G = 2, R
f
= 2kΩ, R
L
= 2kΩ to V
s
/2; unless noted)
-20
-30
-40
-50
-60
-70
-80
-90
0
5
2nd & 3rd Harmonic Distortion; V
s
= +5V
V
o
= 2V
pp
R
f
= 1kΩ
3rd
R
L
= 150Ω
-20
-30
-40
-50
-60
-70
-80
-90
2nd & 3rd Harmonic Distortion; V
s
= +2.7V
V
o
= 1V
pp
R
f
= 1kΩ
3rd
R
L
= 150Ω
2nd
R
L
= 150Ω
Distortion (dB)
Distortion (dB)
2nd
R
L
= 150Ω
3rd
R
L
= 2kΩ
2nd
R
L
= 2kΩ
3rd
R
L
= 2kΩ
2nd
R
L
= 2kΩ
-20
-30
-40
-50
-60
-70
-80
-90
2nd Harmonic Distortion vs. V
o
R
f
= 1kΩ
Frequency (MHz)
10
15
20
0
5
-20
-30
-40
-50
-60
-70
-80
-90
3rd Harmonic Distortion vs. V
o
R
f
= 1kΩ
Frequency (MHz)
10
15
20
Distortion (dB)
20MHz
10MHz
5MHz
Distortion (dB)
20MHz
10MHz
5MHz
0.5
-10
0
PSRR
Output Amplitude (V
pp
)
1.0
1.5
2.0
2.5
0.5
-40
-50
CMRR
Output Amplitude (V
pp
)
1.0
1.5
2.0
2.5
-30
-40
-50
-60
-70
1k
0.01
0.1
1
10
100
CMRR (dB)
PSRR (dB)
-20
-60
-70
-80
-90
0.01
0.1
1.0
10
100
80
70
Open Loop Gain & Phase vs. Frequency
Frequency (MHz)
0.8
0.6
0.4
0.2
0
Output Current
Frequency (MHz)
Open Loop Gain (dB)
Output Voltage (V)
60
50
40
30
20
10
0
|Gain|
Phase (degrees)
Linear output current +60mA
Phase
0
-45
-90
0.1
1
10
100
-0.2
-0.6
-0.8
-0.4
Short circuit current +90mA
-10
-20
0.01
-135
-180
Frequency (MHz)
-100
-50
Output Current (mA)
0
50
100
REV. 1C March 2005
5
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