KM4100/KM4101 Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers
-
+
1
2
3
Out
-V
s
+In
+V
s
-In
6
4
5
DIS
SOT23-6 (KM4101)
-
+
1
2
3
4
NC
-In
+In
-V
s
DIS
+V
s
Out
NC
8
7
6
5
SOIC (KM4101)
Features
s
260MHz bandwidth
s
Fully specified at +2.7V and +5V supplies
s
Output voltage range:
0.036V to 4.953V; Vs = +5; RL = 2k
s
Input voltage range: -0.3V to +3.8V; Vs = +5
s
150V/
s slew rate
s
4.2mA supply current
s
Power down to Is = 127
A (KM4101)
s
60mA linear output current
s
90mA output short circuit current
s
Directly replaces AD8051 and LM7131 in single
supply applications
s
Small package options (SOT-23, SOIC)
Applications
s
A/D driver
s
Active filters
s
CCD imaging systems
s
CD/DVD ROM
s
Coaxial cable drivers
s
High capacitive load driver
s
Portable/battery-powered applications
s
Twisted pair driver
s
Video driver
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/
s
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.
KM4100/KM4101
Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers
www.fairchildsemi.com
REV. 1A February 2001
Output Swing
Output Voltage (0.5V/div)
Time (0.5
s/div)
2.7
0
V
s
= +2.7V
R
L
= 2k
G = -1
KM4100/KM4101 Packages
-
+
1
2
3
Out
-V
s
+In
+V
s
-In
5
4
SOT23-5 (KM4100)
-
+
1
2
3
4
NC
-In
+In
-V
s
NC
+V
s
Out
NC
8
7
6
5
SOIC (KM4100)
DATA SHEET
KM4100/KM4101
2
REV. 1A February 2001
Parameters
Conditions
TYP
Min & Max
UNITS
NOTES
Case Temperature
+25C
+25C
Frequency Domain Response
-3dB bandwidth
G = +1, Vo = 0.05V
pp
215
MHz
1
G = +2, Vo = 0.2V
pp
85
MHz
full power bandwidth
G = +2, Vo = 2V
pp
36
MHz
gain bandwidth product
86
MHz
Time Domain Response
1
rise and fall time
0.2V step
3.7
ns
settling time to 0.1%
1V step
40
ns
overshoot
0.2V step,
9
%
slew rate
2.7V step
,
G = -1
140
V/
s
Distortion and Noise Response
2nd harmonic distortion
1V
pp
, 5MHz
86
dBc
1
3rd harmonic distortion
1V
pp
, 5MHz
85
dBc
1
THD
1V
pp
, 5MHz
76
dB
1
input voltage noise
>1MHz
16
nV/
Hz
input current noise
>1MHz
1.3
pA/
Hz
DC Performance
input offset voltage
-1.6
8
mV
2
average drift
10
V/C
input bias current
3
8
A
2
average drift
7
nA/C
input offset current
0
1
A
2
power supply rejection ratio
DC
57
52
dB
2
open loop gain
75
65
dB
2
quiescent current
3.9
5
mA
2
quiescent current (disabled)
58
100
A
2
Input Characteristics
input resistance
4.3
M
input capacitance
1.5
pF
input common mode voltage range
-0.3 to 1.5
V
common mode rejection ratio
DC, V
cm
= 0V to V
s
- 1.5
87
72
dB
2
Disable Characteristics (KM4101)
turn on time
150
ns
turn off time
25
ns
off isolation
5MHz, R
L
= 100
75
dB
Output Characteristics
output voltage swing
R
L
= 10k
to V
s
/2
0.023 to 2.66
V
R
L
= 2k
to V
s
/2
0.025 to 2.653
0.1 to 2.6
V
2
R
L
= 150
to V
s
/2
0.065 to 2.55
0.3 to 2.325
V
2
linear output current
60
mA
-40C to +85C
55
mA
short circuit output current
90
mA
power supply operating range
2.7
2.5 to 5.5
V
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 = 1k
was used used for optimal performance. (For G = +1, Rf = 0)
2) 100% tested at +25C.
Absolute Maximum Ratings
Package Thermal Resistance
supply voltage
0 to +6V
Package
JA
maximum junction temperature
+175C
5 lead SOT23
256C/W
storage temperature range
-65C to +150C
6 lead SOT23
230C/W
lead temperature (10 sec)
+300C
8 lead SOIC
152C/W
operating temperature range (recommended) -40C to +85C
input voltage range
+V
s
+0.5V; -V
s
-0.5V
internal power dissipation
see power derating curves
KM4100/KM4101 Electrical Characteristics
(V
s
= +2.7V, G = 2, R
L
= 2k
to V
s
/2; unless noted)
KM4100/KM4101
DATA SHEET
REV. 1A February 2001
3
Parameters
Conditions
TYP
Min & Max
UNITS
NOTES
Case Temperature
+25C
+25C
Frequency Domain Response
-3dB bandwidth
G = +1, Vo = 0.05V
pp
260
MHz
1
G = +2, Vo = 0.2V
pp
90
MHz
full power bandwidth
G = +2, Vo = 2V
pp
40
MHz
gain bandwidth product
90
MHz
Time Domain Response
1
rise and fall time
0.2V step
3.6
ns
settling time to 0.1%
2V step
40
ns
overshoot
0.2V step,
7
%
slew rate
5V step
,
G = -1
150
V/
s
Distortion and Noise Response
2nd harmonic distortion
2V
pp
, 5MHz
70
dBc
1
3rd harmonic distortion
2V
pp
, 5MHz
78
dBc
1
THD
2V
pp
, 5MHz
68
dB
1
input voltage noise
>1MHz
16
nV/
Hz
input current noise
>1MHz
1.3
pA/
Hz
DC Performance
input offset voltage
1.4
8
mV
2
average drift
10
V/C
input bias current
3
8
A
2
average drift
7
nA/C
input offset current
0
0.8
A
2
power supply rejection ratio
DC
57
52
dB
2
open loop gain
78
68
dB
2
quiescent current
4.2
5.2
mA
2
quiescent current (disabled)
127
170
A
2
Input Characteristics
input resistance
4.3
M
input capacitance
1.5
pF
input common mode voltage range
-0.3 to 3.8
V
common mode rejection ratio
DC, V
cm
= 0V to V
s
- 1.5
87
72
dB
2
Disable Characteristics (KM4101)
turn on time
150
ns
turn off time
25
ns
off isolation
5MHz, R
L
= 100
75
dB
Output Characteristics
output voltage swing
R
L
= 10k
to V
s
/2
0.027 to 4.97
V
R
L
= 2k
to V
s
/2
0.036 to 4.953
0.1 to 4.9
V
2
R
L
= 150
to V
s
/2
0.12 to 4.8
0.3 to 4.625
V
2
linear output current
60
mA
-40C to +85C
55
mA
short circuit output current
90
mA
power supply operating range
5
2.5 to 5.5
V
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 = 1k
was used used for optimal performance. (For G = +1, Rf = 0)
2) 100% tested at +25C.
KM4100/KM4101 Electrical Characteristics
(V
s
= +5V, G = 2, R
L
= 2k
to V
s
/2; unless noted)
4
REV. 1A February 2001
KM4100/KM4101 Performance Characteristics
(V
s
= +5V, G = 2, R
f
= 2k
, R
L
= 2k
to V
s
/2; unless noted)
Non-Inverting Freq. Response V
s
= +5V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.1
1
G = 10
R
f
= 2k
10
100
G = 5
R
f
= 2k
G = 1
R
f
= 0
G = 2
R
f
= 1k
Inverting Freq. Response V
s
= +5V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.1
1
G = -10
R
f
= 2k
10
100
G = -5
R
f
= 2k
G = -2
R
f
= 2k
G = -1
R
f
= 2k
Non-Inverting Freq. Response V
s
= +2.7
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.1
1
G = 10
R
f
= 2k
10
100
G = 5
R
f
= 2k
G = 1
R
f
= 0
G = 2
R
f
= 1k
Inverting Freq. Response V
s
= +2.7
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.1
1
G = -10
R
f
= 2k
10
100
G = -5
R
f
= 2k
G = -2
R
f
= 2k
G = -1
R
f
= 2k
Frequency Response vs. C
L
Magnitude (1dB/div)
Frequency (MHz)
0.1
1
10
100
C
L
= 100pF
R
s
= 25
C
L
= 50pF
R
s
= 33
C
L
= 20pF
R
s
= 20
C
L
= 10pF
R
s
= 0
+
-
1k
1k
R
s
C
L
R
L
Large Signal Frequency Response
Magnitude (1dB/div)
Frequency (MHz)
0.1
1
10
100
V
o
= 1V
pp
V
o
= 2V
pp
Frequency Response vs. Temperature
Magnitude (0.5dB/div)
Frequency (MHz)
1
10
100
Input Voltage Noise
Voltage Noise (nV/
Hz)
Frequency (Hz)
1k
10k
100k
1M
0
10
20
30
40
50
60
70
80
90
100
DATA SHEET
KM4100/KM4101
REV. 1A February 2001
5
KM4100/KM4101 Performance Characteristics
(V
s
= +5V, G = 2, R
f
= 2k
, R
L
= 2k
to V
s
/2; unless noted)
2nd & 3rd Harmonic Distortion; V
s
= +5V
Distortion (dB)
Frequency (MHz)
0
5
10
15
3rd
R
L
= 150
20
2nd
R
L
= 150
3rd
R
L
= 2k
2nd
R
L
= 2k
-90
-80
-70
-60
-50
-40
-30
-20
V
o
= 2V
pp
R
f
= 1k
2nd & 3rd Harmonic Distortion; V
s
= +2.7V
Distortion (dB)
Frequency (MHz)
0
5
10
15
2nd
R
L
= 150
20
3rd
R
L
= 150
3rd
R
L
= 2k
2nd
R
L
= 2k
-90
-80
-70
-60
-50
-40
-30
-20
V
o
= 1V
pp
R
f
= 1k
2nd Harmonic Distortion vs. V
o
Distortion (dB)
Output Amplitude (V
pp
)
0.5
1.0
1.5
2.0
20MHz
10MHz
5MHz
2.5
-90
-80
-70
-60
-50
-40
-30
-20
R
f
= 1k
3rd Harmonic Distortion vs. V
o
Distortion (dB)
Output Amplitude (V
pp
)
0.5
1.0
1.5
2.0
20MHz
10MHz
5MHz
2.5
-90
-80
-70
-60
-50
-40
-30
-20
R
f
= 1k
PSRR
PSRR (dB)
Frequency (MHz)
1k
0.01
0.1
1
100
-70
-60
-50
-40
-30
-20
-10
0
10
CMRR
CMRR (dB)
Frequency (MHz)
0.01
0.1
1.0
10
100
-90
-80
-70
-60
-50
-40
Open Loop Gain & Phase vs. Frequency
Open Loop Gain (dB)
Frequency (MHz)
-20
-10
0
10
20
-180
-135
-90
-45
0
30
40
50
60
70
80
0.01
0.1
1
10
100
Phase (degrees)
|Gain|
Phase
Output Current
Output Voltage (V)
Output Current (mA)
-100
-50
0
50
100
Linear output current +60mA
-0.8
-0.6
-0.2
0
0.2
0.4
0.6
0.8
-0.4
Short circuit current +90mA
KM4100/KM4101
DATA SHEET
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