LM6142 and LM6144
17 MHz Rail-to-Rail Input-Output Operational Amplifiers
General Description
Using patent pending new circuit topologies, the LM6142/44
provides new levels of performance in applications where
low voltage supplies or power limitations previously made
compromise necessary. Operating on supplies of 1.8V to
over 24V, the LM6142/44 is an excellent choice for battery
operated systems, portable instrumentation and others.
The greater than rail-to-rail input voltage range eliminates
concern over exceeding the common-mode voltage range.
The rail-to-rail output swing provides the maximum possible
dynamic range at the output. This is particularly important
when operating on low supply voltages.
High gain-bandwidth with 650 A/Amplifier supply current
opens new battery powered applications where previous
higher power consumption reduced battery life to unaccept-
able levels. The ability to drive large capacitive loads without
oscillating functionally removes this common problem.
Features
At V
S
= 5V. Typ unless noted.
n
Rail-to-rail input CMVR -0.25V to 5.25V
n
Rail-to-rail output swing 0.005V to 4.995V
n
Wide gain-bandwidth: 17 MHz at 50 kHz (typ)
n
Slew rate:
Small signal, 5V/s
Large signal, 30V/s
n
Low supply current 650 A/Amplifier
n
Wide supply range 1.8V to 24V
n
CMRR 107 dB
n
Gain 108 dB with R
L
= 10k
n
PSRR 87 dB
Applications
n
Battery operated instrumentation
n
Depth sounders/fish finders
n
Barcode scanners
n
Wireless communications
n
Rail-to-rail in-out instrumentation amps
Connection Diagrams
8-Pin CDIP
DS012057-14
Top View
8-Pin DIP/SO
DS012057-1
Top View
14-Pin DIP/SO
DS012057-2
Top View
August 2000
LM6142
l
and
LM6144
17
MHz
Rail-to-Rail
Input-Output
Operational
Amplifiers
2000 National Semiconductor Corporation
DS012057
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
2500V
Differential Input Voltage
15V
Voltage at Input/Output Pin
(V+) + 0.3V, (V-) - 0.3V
Supply Voltage (V+ - V-)
35V
Current at Input Pin
10 mA
Current at Output Pin (Note 3)
25 mA
Current at Power Supply Pin
50 mA
Lead Temperature
(soldering, 10 sec)
260C
Storage Temp. Range
-65C to +150C
Junction Temperature (Note 4)
150C
Operating Ratings
(Note 1)
Supply Voltage
1.8V
V+
24V
Junction Temperature Range
LM6142, LM6144
-40C
T
J
+85C
Thermal Resistance (
JA
)
N Package, 8-Pin Molded DIP
115C/W
M Package, 8-Pin Surface Mount
193C/W
N Package, 14-Pin Molded DIP
81C/W
M Package, 14-Pin Surface Mount
126C/W
5.0V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C, V+ = 5.0V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V+/2. Boldface limits apply at the temperature extremes.
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
V
OS
Input Offset Voltage
0.3
1.0
2.5
mV
2.2
3.3
max
TCV
OS
Input Offset Voltage
3
V/C
Average Drift
I
B
Input Bias Current
170
250
300
nA
max
0V
V
CM
5V
180
280
526
526
I
OS
Input Offset Current
3
30
30
nA
80
80
max
R
IN
Input Resistance, C
M
126
M
CMRR
Common Mode
0V
V
CM
4V
107
84
84
dB
min
Rejection Ratio
78
78
0V
V
CM
5V
82
66
66
79
64
64
PSRR
Power Supply
5V
V
+
24V
87
80
80
Rejection Ratio
78
78
V
CM
Input Common-Mode
-0.25
0
0
V
Voltage Range
5.25
5.0
5.0
A
V
Large Signal
R
L
= 10k
270
100
80
V/mV
Voltage Gain
70
33
25
min
V
O
Output Swing
R
L
= 100k
0.005
0.01
0.01
V
0.013
0.013
max
4.995
4.98
4.98
V
4.93
4.93
min
R
L
= 10k
0.02
V max
4.97
V min
R
L
= 2k
0.06
0.1
0.1
V
0.133
0.133
max
4.90
4.86
4.86
V
4.80
4.80
min
LM6142
and
LM6144
www.national.com
2
5.0V DC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25C, V+ = 5.0V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V+/2. Boldface limits apply at the temperature extremes.
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
I
SC
Output Short
Sourcing
13
10
8
mA
Circuit Current
4.9
4
min
LM6142
35
35
mA
max
Sinking
24
10
10
mA
5.3
5.3
min
35
35
mA
max
I
SC
Output Short
Sourcing
8
6
6
mA
Circuit Current
3
3
min
LM6144
35
35
mA
max
Sinking
22
8
8
mA
4
4
min
35
35
mA
max
I
S
Supply Current
Per Amplifier
650
800
800
A
880
880
max
5.0V AC Electrical Characteristics
Unless Otherwise Specified, All Limits Guaranteed for T
J
= 25C, V+ = 5.0V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V
S
/2. Boldface limits apply at the temperature extremes.
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
SR
Slew Rate
8 V
p-p
@
V
CC
12V
25
15
13
V/s
R
S
>
1 k
13
11
min
GBW
Gain-Bandwidth Product
f = 50 kHz
17
10
10
MHz
6
6
min
m
Phase Margin
38
Deg
Amp-to-Amp Isolation
130
dB
e
n
Input-Referred
f = 1 kHz
16
Voltage Noise
i
n
Input-Referred
f = 1 kHz
0.22
Current Noise
T.H.D.
Total Harmonic Distortion
f = 10 kHz, R
L
= 10 k
,
0.003
%
LM6142
and
LM6144
www.national.com
3
2.7V DC Electrical Characteristics
Unless Otherwise Specified, All Limits Guaranteed for T
J
= 25C, V+ = 2.7V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V
+
/2. Boldface limits apply at the temperature extreme
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
V
OS
Input Offset Voltage
0.4
1.8
2.5
mV
4.3
5
max
I
B
Input Bias Current
150
250
300
nA
526
526
max
I
OS
Input Offset Current
4
30
30
nA
80
80
max
R
IN
Input Resistance
128
M
CMRR
Common Mode
0V
V
CM
1.8V
90
dB
min
Rejection Ratio
0V
V
CM
2.7V
76
PSRR
Power Supply
3V
V+
5V
79
Rejection Ratio
V
CM
Input Common-Mode
-0.25
0
0
V min
Voltage Range
2.95
2.7
2.7
V max
A
V
Large Signal
R
L
= 10k
55
V/mV
Voltage Gain
min
V
O
Output Swing
R
L
= 100k
0.019
0.08
0.08
V
0.112
0.112
max
2.67
2.66
2.66
V
2.25
2.25
min
I
S
Supply Current
Per Amplifier
510
800
800
A
880
880
max
2.7V AC Electrical Characteristics
Unless Otherwise Specified, All Limits Guaranteed for T
J
= 25C, V+ = 2.7V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V
+
/2. Boldface limits apply at the temperature extreme
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
GBW
Gain-Bandwidth Product
f = 50 kHz
9
MHz
m
Phase Margin
36
Deg
G
m
Gain Margin
6
dB
LM6142
and
LM6144
www.national.com
4
24V Electrical Characteristics
Unless Otherwise Specified, All Limits Guaranteed for T
J
= 25C, V+ = 24V, V- = 0V, V
CM
= V
O
= V+/2 and R
L
>
1 M
to
V
S
/2. Boldface limits apply at the temperature extreme
LM6144AI
LM6144BI
Symbol
Parameter
Conditions
Typ
LM6142AI
LM6142BI
Units
(Note 5)
Limit
Limit
(Note 6)
(Note 6)
V
OS
Input Offset Voltage
1.3
2
3.8
mV
4.8
4.8
max
I
B
Input Bias Current
174
nA
max
I
OS
Input Offset Current
5
nA
max
R
IN
Input Resistance
288
M
CMRR
Common Mode
0V
V
CM
23V
114
dB
min
Rejection Ratio
0V
V
CM
24V
100
PSRR
Power Supply
0V
V
CM
24V
87
Rejection Ratio
V
CM
Input Common-Mode
-0.25
0
0
V min
Voltage Range
24.25
24
24
V max
A
V
Large Signal
R
L
= 10k
500
V/mV
Voltage Gain
min
V
O
Output Swing
R
L
= 10 k
0.07
0.15
0.15
V
0.185
0.185
max
23.85
23.81
23.81
V
23.62
23.62
min
I
S
Supply Current
Per Amplifier
750
1100
1100
A
1150
1150
max
GBW
Gain-Bandwidth Product
f = 50 kHz
18
MHz
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Charactenstics.
Note 2: Human body model, 1.5 k
in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150C.
Note 4: The maximum power dissipation is a function of T
J(max)
,
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is P
D
= (T
j(max)
- T
A
)/
JA
. All numbers apply for packages soldered directly into a PC board.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: For guaranteed military specifications see military datasheet MNLM6142AM-X.
LM6142
and
LM6144
www.national.com
5
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