www.fairchildsemi.com
KM4200
Dual, Low Cost, +2.7V & +5V, 260MHz Rail-to-Rail Amplifier
Features
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General Description
The KM4200 is a dual, low cost, voltage feedback
amplifier. This amplifier 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 KM4100 (single) and KM4101 (single
with disable) are also available.
The KM4200 offers superior dynamic performance with
a 260MHz small signal bandwidth and 145V/µs slew
rate. The combination of low power, high output current
drive, and rail-to-rail performance make the KM4200
well suited for battery-powered communication/
computing systems.
The combination of low cost and high performance
make the KM4200 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
145V/µs slew rate
4.2mA supply current per amplifier
±55mA linear output current
±85mA short circuit current
Directly replaces AD8052 and AD8042 in single
supply applications
Small package options (SOIC and MSOP)
Applications
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KM4200 Packages
SOIC
Out1
+In1
-V
s
-In1
1
2
3
4
+
-
-
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
8
7
+
+V
s
6
5
Out2
-In2
+In2
0
Time (0.5µs/div)
V
s
= +2.7V
R
L
= 2kΩ
G = -1
MSOP
Out1
+In1
-V
s
-In1
1
2
3
4
+
-
-
8
7
+
+V
s
6
5
Out2
-In2
+In2
REV. 1B March 2005
DATA SHEET
KM4200
KM4200 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
crosstalk
DC Performance
input offset voltage
average drift
input bias current
average drift
input offset current
power supply rejection ratio
open loop gain
quiescent current per amplifier
Input Characteristics
input resistance
input capacitance
input common mode voltage range
common mode rejection ratio
Output Characteristics
output voltage swing
linear output current
short circuit output current
power supply operating range
(V
s
= +2.7V, G = 2, R
L
= 2kΩ to V
s
/2; unless noted)
TYP
+25°C
MIN & MAX
+25°C
MHz
MHz
MHz
MHz
ns
ns
%
V/µs
dBc
dBc
dB
nV/√Hz
pA/√Hz
dB
±8
±8
±1
52
65
5
mV
µV/°C
µA
nA/°C
µA
dB
dB
mA
MΩ
pF
V
dB
V
V
V
mA
mA
mA
V
1
UNITS
NOTES
CONDITIONS
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
10MHz
215
85
36
86
3.7
40
9
130
79
82
77
16
1.3
65
-1.6
10
3
7
0.1
57
75
3.9
4.3
1.8
-0.3 to 1.5
87
1
1
1
1
1
2
2
2
2
2
2
DC
DC, V
cm
= 0V to V
s
- 1.5
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
72
2
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
±55
±50
±85
2.7
2.5 to 5.5
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
+175°C
maximum junction temperature
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
8 lead SOIC
8 lead MSOP
θ
JA
152°C/W
206°C/W
2
REV. 1B March 2005
KM4200
DATA SHEET
KM4200 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
crosstalk
DC Performance
input offset voltage
average drift
input bias current
average drift
input offset current
power supply rejection ratio
open loop gain
quiescent current per amplifier
Input Characteristics
input resistance
input capacitance
input common mode voltage range
common mode rejection ratio
Output Characteristics
output voltage swing
linear output current
short circuit output current
power supply operating range
(V
s
= +5V, G = 2, R
L
= 2kΩ to V
s
/2; unless noted)
TYP
+25°C
Min & Max
+25°C
MHz
MHz
MHz
MHz
ns
ns
%
V/µs
dBc
dBc
dB
nV/√Hz
pA/√Hz
dB
±8
±8
±0.8
52
68
5.2
mV
µV/°C
µA
nA/°C
µA
dB
dB
mA
MΩ
pF
V
dB
V
V
V
mA
mA
mA
V
1
UNITS
NOTES
Conditions
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
10MHz
260
90
40
90
3.6
40
7
145
71
78
70
16
1.3
62
1.4
10
3
7
0.1
57
78
4.2
4.3
1.8
-0.3 to 3.8
87
1
1
1
1
1
2
2
2
2
2
2
DC
DC, V
cm
= 0V to V
s
- 1.5
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
72
2
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
±55
±50
±85
5
2.5 to 5.5
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. 1B March 2005
3
DATA SHEET
KM4200
KM4200 Performance Characteristics
Non-Inverting Freq. Response V
s
= +5V
(V
s
= +5V, G = 2, R
f
= 2kΩ, R
L
= 2kΩ to V
s
/2; unless noted)
Inverting Frequency Response V
s
= +5V
Normalized Magnitude (2dB/div)
G=2
R
f
= 1kΩ
G = 10
R
f
= 2kΩ
G=5
R
f
= 2kΩ
Normalized Magnitude (1dB/div)
G=1
R
f
= 0
G = -1
R
f
= 2kΩ
G = -10
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
G = -2
R
f
= 2kΩ
0.1
1
Non-Inverting Freq. Response V
s
= +2.7
Frequency (MHz)
10
100
0.1
Normalized Magnitude (2dB/div)
G=2
R
f
= 1kΩ
G = 10
R
f
= 2kΩ
G=5
R
f
= 2kΩ
Normalized Magnitude (1dB/div)
G=1
R
f
= 0
Inverting Frequency Response V
s
= +2.7V
G = -1
R
f
= 2kΩ
Frequency (MHz)
1
10
100
G = -10
R
f
= 2kΩ
G = -5
R
f
= 2kΩ
G = -2
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
V
o
= 2V
pp
-
1kΩ
+
1kΩ
R
s
C
L
R
L
C
L
= 20pF
R
s
= 20Ω
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. 1B March 2005
KM4200
DATA SHEET
KM4200 Performance Characteristics
-20
-30
-40
-50
-60
-70
-80
-90
0
5
(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
2nd & 3rd Harmonic Distortion; V
s
= +5V
V
o
= 2V
pp
R
f
= 1kΩ
2nd
R
L
= 150Ω
3rd
R
L
= 150Ω
2nd & 3rd Harmonic Distortion; V
s
= +2.7V
V
o
= 1V
pp
R
f
= 1kΩ
3rd
R
L
= 150Ω
2nd
R
L
= 150Ω
3rd
R
L
= 2kΩ
Distortion (dBc)
3rd
R
L
= 2kΩ
2nd
R
L
= 2kΩ
Distortion (dBc)
2nd
R
L
= 2kΩ
-20
-30
-40
-50
-60
-70
-80
-90
2nd Harmonic Distortion vs. V
o
R
f
= 1kΩ
20MHz
10MHz
5MHz
2MHz
Frequency (MHz)
10
15
20
0
5
-20
-30
-40
-50
-60
-70
-80
2.5
-90
3rd Harmonic Distortion vs. V
o
R
f
= 1kΩ
20MHz
Frequency (MHz)
10
15
20
Distortion (dBc)
Distortion (dBc)
10MHz
5MHz
0.5
-10
0
PSRR
Output Amplitude (V
pp
)
1.0
1.5
2.0
0.5
-40
-50
CMRR
Output Amplitude (V
pp
)
1.0
1.5
2MHz
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)
50
40
30
20
10
0
|Gain|
Output Voltage (V)
60
Linear output current ±55mA
Phase (degrees)
Phase
0
-45
-90
0.1
1
10
100
-0.2
-0.6
-0.8
-0.4
Short circuit current ±85mA
-10
-20
0.01
-135
-180
Frequency (MHz)
-100
-50
Output Current (mA)
0
50
100
REV. 1B March 2005
5
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