www.docs.chipfind.ru
Features
I
136
A supply current
I
4.9MHz bandwidth
I
Output swings to within 20mV of either rail
I
Input voltage range exceeds the rail by >250mV
I
5.3V/
s slew rate
I
35mA short circuit output current
I
24nV/
Hz input voltage noise
I
Directly replaces LMC7101 in single supply
applications
I
Available in SOT23-5 package
Applications
I
Portable/battery-powered applications
I
PCMCIA, USB
I
Mobile communications, cellular phones, pagers
I
Notebooks and PDA's
I
Sensor Interface
I
A/D buffer
I
Active filters
I
Signal conditioning
I
Portable test instruments
General Description
The KM7101 is an ultra-low cost, low power, voltage
feedback amplifier that is pin compatible to the
LMC7101. If a standard pinout is required, use the
KM4170. The KM7101 uses only 136
A of supply
current and offers no crossover distortion. The input
common mode voltage range exceeds the negative
and positive rails.
The KM7101 offers high bipolar performance at a
low CMOS price. The KM7101 offers superior
dynamic performance with a 4.9MHz small signal
bandwidth and 5.3V/
s slew rate. The combination
of low power, high bandwidth, and rail-to-rail per-
formance make the KM7101 well suited for battery-
powered communication/computing systems.
KM7101
Ultra-Low Cost, 139
A, +2.7V, 4.9MHz Rail-to-Rail I/O Amplifier
www.fairchildsemi.com
REV. 1B March 2001
KM7101 Package
-
+
1
2
3
Out
+V
s
+In
-V
s
-In
5
4
SOT23-5
Large Signal Frequency Response
Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
1
10
V
o
= 4V
pp
V
s
= 5V
V
o
= 1V
pp
V
o
= 2V
pp
Output Swing vs. Load
Output Voltage (0.27V/div)
Input Voltage (0.4V/div)
-2.0
0
2.0
-1.35
0
1.35
R
L
= 10k
R
L
= 1k
R
L
= 75/100
R
L
= 200
R
L
= 100
R
L
= 75
DATA SHEET
KM7101
2
REV. 1B March 2001
Parameters
Conditions
TYP
Min & Max
UNITS
NOTES
Case Temperature
+25C
+25C
Frequency Domain Response
-3dB bandwidth
G = +1, Vo = 0.02V
pp
4.9
MHz
1
G = +2, Vo = 0.2V
pp
3.7
MHz
full power bandwidth
G = +2, Vo = 2V
pp
1.4 MHz
gain bandwidth product
2.2
MHz
Time Domain Response
rise and fall time
1V step
163
ns
overshoot
1V step
<1
%
slew rate
1V step
5.3 V/
s
Distortion and Noise Response
2nd harmonic distortion
1V
pp
, 10kHz
-75
dBc
3rd harmonic distortion
1V
pp
, 10kHz
-76
dBc
THD
1V
pp
, 10kHz
0.03
%
input voltage noise
>1MHz
24
nV/
Hz
DC Performance
input offset voltage
0.5
6
mV
2
average drift
5
V/C
input bias current
90
220
nA
2
average drift
32
pA/C
power supply rejection ratio
DC
83
55
dB
2
open loop gain
R
L
= 10k
90
dB
quiescent current
136
190
A
2
Input Characteristics
input resistance
12
M
input capacitance
2
pF
input common mode voltage range
-0.25 to 2.95
V
common mode rejection ratio
DC, V
cm
= 0V to V
s
81
55
dB
2
Output Characteristics
output voltage swing
R
L
= 10k
to V
s
/2
0.02 to 2.68
0.06 to 2.64
V
2
R
L
= 1k
to V
s
/2
0.05 to 2.63
V
R
L
= 200
to V
s
/2
0.11 to 2.52
V
output current
16
mA
short circuit output current
35
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) 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
lead temperature (10 sec)
+300C
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
KM7101 Electrical Characteristics
(V
s
= +2.7V, G = 2, R
L
= 10k
to V
s
/2, R
f
= 5k
; unless noted)
KM7101
DATA SHEET
REV. 1B March 2001
3
Parameters
Conditions
TYP
Min & Max
UNITS
NOTES
Case Temperature
+25C
+25C
Frequency Domain Response
-3dB bandwidth
G = +1, Vo = 0.02V
pp
4.3
MHz
1
G = +2, Vo = 0.2V
pp
3.0
MHz
full power bandwidth
G = +2, Vo = 2V
pp
2.3
MHz
gain bandwidth product
2.0
MHz
Time Domain Response
rise and fall time
1V step
110
ns
overshoot
1V step
<1
%
slew rate
1V step
9
V/
s
Distortion and Noise Response
2nd harmonic distortion
2V
pp
, 10kHz
-73
dBc
3rd harmonic distortion
2V
pp
, 10kHz
-75
dBc
THD
2V
pp
, 10kHz
0.03
%
input voltage noise
>1MHz
27
nV/
Hz
DC Performance
input offset voltage
1.5
8
mV
2
average drift
15
V/C
input bias current
90
270
nA
2
average drift
40
pA/C
power supply rejection ratio
DC
60
40
dB
2
open loop gain
R
L
= 10k
80
dB
quiescent current
160
235
A
2
Input Characteristics
input resistance
12
M
input capacitance
2
pF
input common mode voltage range
-0.25 to 5.25
V
common mode rejection ratio
DC, V
cm
= 0V to V
s
85
58
dB
2
Output Characteristics
output voltage swing
R
L
= 10k
to V
s
/2
0.04 to 4.96 0.08 to 4.92
V
2
R
L
= 1k
to V
s
/2
0.07 to 4.9
V
R
L
= 200
to V
s
/2
0.14 to 4.67
V
output current
30
mA
short circuit output current
60
mA
power supply operating range
5.0
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) For G = +1, Rf = 0.
2) 100% tested at +25C.
KM7101 Electrical Characteristics
(V
s
= +5V, G = 2, R
L
= 10k
to V
s
/2, R
f
= 5k
; unless noted)
KM7101 Performance Characteristics
(V
s
= +2.7, G = 2, R
L
= 10k
to V
s
/2, R
f
= 5k
; unless noted)
Non-Inverting Freq. Response V
s
= +5V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
G = 10
R
f
= 5k
1
10
G = 5
R
f
= 5k
G = 1
R
f
= 0
G = 2
R
f
= 5k
V
o
= 0.2V
pp
Inverting Frequency Response V
s
= +5V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
G = -10
R
f
= 5k
1
10
G = -5
R
f
= 5k
G = -1
R
f
= 5k
G = -2
R
f
= 5k
V
o
= 0.2V
pp
Non-Inverting Freq. Response V
s
= +2.7V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
G = 10
R
f
= 5k
1
10
G = 5
R
f
= 5k
G = 1
R
f
= 0
G = 2
R
f
= 5k
V
o
= 0.2V
pp
Inverting Frequency Response V
s
= +2.7V
Normalized Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
G = -10
1
10
G = -5
G = -1
G = -2
R
f
= 5k
Frequency Response vs. C
L
Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
1
10
C
L
= 100pF
R
s
= 100
C
L
= 10pF
R
s
= 0
C
L
= 50pF
R
s
= 0
C
L
= 20pF
R
s
= 0
+
-
5k
5k
R
s
C
L
R
L
V
o
= 0.05V
Frequency Response vs. R
L
Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
1
10
R
L
= 1k
R
L
= 50
R
L
= 10k
R
L
= 200
Large Signal Frequency Response
Magnitude (1dB/div)
Frequency (MHz)
0.01
0.1
1
10
V
o
= 4V
pp
V
s
= 5V
V
o
= 1V
pp
V
o
= 2V
pp
Open Loop Gain & Phase vs. Frequency
Open Loop Gain (dB)
Frequency (Hz)
10
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
-20
60
140
Phase
No load
0
Open Loop Phase (deg)
-180
-90
0
-135
-45
|Gain|
No load
Phase
R
L
= 10k
|Gain|
R
L
= 10k
V
s
= 5V
20
40
80
120
100
DATA SHEET
KM7101
4
REV. 1B March 2001
KM7101 Performance Characteristics
(V
s
= +2.7V, G = 2, R
L
= 10k
to V
s
/2, R
f
= 5k
; unless noted)
2nd & 3rd Harmonic Distortion; V
s
= +2.7V
Distortion (dBc)
Frequency (kHz)
0
20
40
60
80
3rd
R
L
= 1k
100
3rd
R
L
= 200
2nd
R
L
= 10k
2nd
R
L
= 1k
-90
-80
-70
-60
-50
-40
-30
-20
V
o
= 1V
pp
3rd
R
L
= 10k
2nd
R
L
= 200
2nd Harmonic Distortion vs. V
o
Distortion (dB)
Output Amplitude (V
pp
)
0.5
1
1.5
2
100kHz
50kHz
10kHz
2.5
-90
-80
-70
-60
-50
-40
-30
-20
10kHz, 20kHz
50kHz
3rd Harmonic Distortion vs. V
o
Distortion (dB)
Output Amplitude (V
pp
)
0.5
1
1.5
2
100kHz
50kHz
10kHz
2.5
-90
-80
-70
-60
-50
-40
-30
-20
20kHz
CMRR
CMRR (dB)
Frequency (Hz)
10
100
10000
1000
100000
-90
-80
-70
-60
0
-50
-40
-10
-30
-20
PSRR
PSRR (dB)
Frequency (Hz)
10
10000
1000
100
100000
-90
-70
-60
-50
-40
0
-30
-20
-10
-80
Output Swing vs. Load
Output Voltage (0.27V/div)
Input Voltage (0.4V/div)
-2.0
0
2.0
-1.35
0
1.35
R
L
= 10k
R
L
= 1k
R
L
= 75/100
R
L
= 200
R
L
= 100
R
L
= 75
Pulse Resp. vs. Common Mode Voltage
Output Voltage (0.5V/div)
Time (1
s/div)
1.2V offset
0.6V offset
No offset
-0.6V offset
-1.2V offset
KM7101
DATA SHEET
REV. 1B March 2001
5
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