www.fairchildsemi.com
KM4100/KM4101
Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers
Features
s
s
s
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
2.7
s
s
s
s
s
s
s
s
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
s
s
s
s
s
s
s
s
s
KM4100/KM4101 Packages
SOT23-5 (KM4100)
Out
-V
s
+In
1
2
+
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
SOT23-6 (KM4101)
+V
s
Out
-V
s
1
2
+
V
s
= +2.7V
R
L
= 2kΩ
G = -1
5
6
5
4
+V
s
DIS
-In
0
Time (0.5µs/div)
-
-
3
4
-In
+In
3
SOIC (KM4100)
NC
-In
+In
-V
s
1
2
3
4
-
+
SOIC (KM4101)
NC
+V
s
Out
NC
NC
-In
+In
-V
s
1
2
3
4
-
+
8
7
6
5
8
7
6
5
DIS
+V
s
Out
NC
REV. 1A February 2001
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
storage temperature range
-65°C to +150°C
lead temperature (10 sec)
+300°C
operating temperature range (recommended) -40°C to +85°C
input voltage range
+V
s
+0.5V; -V
s
-0.5V
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. 1A February 2001
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. 1A February 2001
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
Inverting Freq. Response V
s
= +5V
Normalized Magnitude (1dB/div)
Normalized Magnitude (1dB/div)
G=2
R
f
= 1kΩ
G = 10
R
f
= 2kΩ
G=5
R
f
= 2kΩ
G=1
R
f
= 0
G = -2
R
f
= 2kΩ
G = -1
R
f
= 2kΩ
G = -10
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
0.1
1
10
100
0.1
1
10
100
Frequency (MHz)
Non-Inverting Freq. Response V
s
= +2.7
Frequency (MHz)
Inverting Freq. Response V
s
= +2.7
Normalized Magnitude (1dB/div)
Normalized Magnitude (1dB/div)
G=1
R
f
= 0
G=2
R
f
= 1kΩ
G = -2
R
f
= 2kΩ
G = -1
R
f
= 2kΩ
G = 10
R
f
= 2kΩ
G=5
R
f
= 2kΩ
G = -10
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
0.1
1
10
100
0.1
1
10
100
Frequency (MHz)
Frequency Response vs. C
L
Frequency (MHz)
Large Signal Frequency Response
Magnitude (1dB/div)
C
L
= 100pF
R
s
= 25Ω
C
L
= 50pF
R
s
= 33Ω
+
-
1kΩ
1kΩ
Magnitude (1dB/div)
V
o
= 1V
pp
V
o
= 2V
pp
R
s
C
L
R
L
C
L
= 20pF
R
s
= 20Ω
C
L
= 10pF
R
s
= 0Ω
0.1
1
10
100
0.1
1
10
100
Frequency (MHz)
Frequency Response vs. Temperature
100
90
Frequency (MHz)
Input Voltage Noise
Voltage Noise (nV/√Hz)
1
10
Magnitude (0.5dB/div)
80
70
60
50
40
30
20
10
0
100
1k
10k
100k
1M
Frequency (MHz)
Frequency (Hz)
4
REV. 1A February 2001
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)
2nd & 3rd Harmonic Distortion; V
s
= +5V
-20
-30
V
o
= 2V
pp
R
f
= 1kΩ
2nd
R
L
= 150Ω
3rd
R
L
= 150Ω
2nd & 3rd Harmonic Distortion; V
s
= +2.7V
-20
-30
V
o
= 1V
pp
R
f
= 1kΩ
3rd
R
L
= 150Ω
2nd
R
L
= 150Ω
Distortion (dB)
Distortion (dB)
-40
-50
-60
-70
-80
-90
0
-40
-50
-60
-70
-80
-90
2nd
R
L
= 2kΩ
3rd
R
L
= 2kΩ
2nd
R
L
= 2kΩ
3rd
R
L
= 2kΩ
5
10
15
20
0
5
10
15
20
Frequency (MHz)
2nd Harmonic Distortion vs. V
o
-20
-30
R
f
= 1kΩ
Frequency (MHz)
3rd Harmonic Distortion vs. V
o
-20
R
f
= 1kΩ
-30
Distortion (dB)
-50
-60
-70
-80
-90
0.5
20MHz
Distortion (dB)
-40
-40
-50
20MHz
10MHz
-60
-70
-80
-90
10MHz
5MHz
5MHz
1.0
1.5
2.0
2.5
0.5
1.0
1.5
2.0
2.5
Output Amplitude (V
pp
)
PSRR
0
-10
-50
-20
-40
Output Amplitude (V
pp
)
CMRR
CMRR (dB)
1k
0.01
PSRR (dB)
-30
-40
-50
-60
-70
-80
-60
-70
0.1
1
10
100
-90
0.01
0.1
1.0
10
100
Frequency (MHz)
Open Loop Gain & Phase vs. Frequency
80
70
0.8
0.6
Frequency (MHz)
Output Current
Open Loop Gain (dB)
Output Voltage (V)
60
50
40
30
20
10
0
-10
-20
0.01
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-100
-50
0
50
100
Short circuit current +90mA
Linear output current +60mA
Phase (degrees)
|Gain|
0
Phase
-45
-90
-135
-180
0.1
1
10
100
Frequency (MHz)
Output Current (mA)
REV. 1A February 2001
5
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