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LMC6442

DUAL OP-AMP, 0.0095 MHz BAND WIDTH, CDIP8

器件类别:配件   

厂商名称:National Semiconductor(TI )

厂商官网:http://www.ti.com

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LMC6442 Dual Micropower Rail-to-Rail Output Single Supply Operational Amplifier
August 2000
LMC6442
Dual Micropower Rail-to-Rail Output Single Supply
Operational Amplifier
General Description
The LMC6442 is ideal for battery powered systems, where
very low supply current (less than one microamp per ampli-
fier) and Rail-to-Rail output swing is required. It is character-
ized for 2.2V to 10V operation, and at 2.2V supply, the
LMC6442 is ideal for single (Li-Ion) or two cell (NiCad or
alkaline) battery systems.
The LMC6442 is designed for battery powered systems that
require long service life through low supply current, such as
smoke and gas detectors, and pager or personal communi-
cations systems.
Operation from single supply is enhanced by the wide com-
mon mode input voltage range which includes the ground (or
negative supply) for ground sensing applications. Very low
(5fA, typical) input bias current and near constant supply
current over supply voltage enhance the LMC6442’s perfor-
mance near the end-of-life battery voltage.
Designed for closed loop gains of greater than plus two (or
minus one), the amplifier has typically 9.5 KHz GBWP (Gain
Bandwidth Product). Unity gain can be used with a simple
compensation circuit, which also allows capacitive loads of
up to 300 pF to be driven, as described in the Application
Notes section.
For compact assembly the LMC6442 is available in the
MSOP 8 pin package, about one half the size required by the
SOIC 8 pin package. 8 pin DIP and 8 pin SOIC are also
available.
Features
(Typical, V
S
= 2.2V)
n
Output Swing to within 30 mV of supply rail
n
High voltage gain
103 dB
n
Gain Bandwidth Product
9.5 KHz
n
Guaranteed for:
2.2V, 5V, 10V
n
Low Supply Current
0.95 µA/Amplifier
n
Input Voltage Range
−0.3V to V
+
-0.9V
n
2.1 µW/Amplifier
Power consumption
n
Stable for A
V
≥+2
or A
V
−1
Applications
n
n
n
n
n
n
n
n
Portable instruments
Smoke/gas/CO/fire detectors
Pagers/cell phones
Instrumentation
Thermostats
Occupancy sensors
Cameras
Active badges
Connection Diagram
10006440
Top View
© 2004 National Semiconductor Corporation
DS100064
www.national.com
LMC6442
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)
Differential Input Voltage
Voltage at Input/Output Pin
Supply Voltage (V
+
− V
):
Current at Input Pin (Note 10)
Current at Output Pin(Notes 3, 7)
Lead Temp. (soldering 10 sec)
Storage Temp. Range:
2 kV
Junction Temp. (Note 4)
150˚C
Operating Ratings
(Note 1)
Supply Voltage
Junction Temperature
Range: LMC6442AI, LMC6442I
Thermal Resistance (θ
JA
)
M Package, 8-pin Surface
Mount
MSOP Package
N Package, 8-pin Molded DIP
193˚C/W
235˚C/W
115˚C/W
1.8V
V
S
11V
−40˚C
<
T
J
<
+85˚C
±
Supply Voltages
(V
+
) + 0.3V, (V
) − 0.3V
16V
±
5 mA
±
30 mA
260˚C
−65˚C to +150˚C
2.2V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.2V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Typ
(Note 5)
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
DC Electrical Characteristics
V
OS
TCV
OS
I
B
Input Offset Voltage
Temp. coefficient of
input offset voltage
Input Bias Current
Input Offset Current
Common Mode
Rejection Ratio
Common Mode Input
Capacitance
Power Supply
Rejection Ratio
Input Common-Mode
Voltage Range
V
S
= 2.5 V to 10V
(Note 14)
(Note 14)
−0.1V
V
CM
≤0.5V
−0.75
0.4
0.005
0.0025
92
4.7
75
75
1.05
0.95
−0.2
0
75
75
1.05
0.95
−0.2
0
4
2
67
67
4
2
67
67
±
3
±
4
±
7
±
8
mV
max
µV/˚C
pA
max
pA
max
dB min
pF
dB
min
V
min
V
max
dB
min
V
min
mV
max
µA
min
I
OS
CMRR
C
IN
PSRR
V
CM
95
1.3
CMRR
50 dB
−0.3
100
94
103
2.18
22
50
50
1.90
2.10
2.2
2
A
V
Large Signal Voltage
Gain
Output Swing
Sourcing (Note 11)
Sinking(Note 11)
V
O
= 0.22V to 2V
V
ID
= 100 mV (Note 13)
V
ID
= −100 mV (Note 13)
80
2.15
2.15
60
60
18
17
20
19
2.4
3.0
80
2.15
2.15
60
60
18
17
20
19
2.6
3.2
V
O
I
SC
Output Short Circuit
Current
Sourcing, V
ID
= 100 mV
(Notes 12, 13)
Sinking, V
ID
= −100 mV
(Notes 12, 13)
I
S
Supply Current (2
amplifiers)
R
L
= open
V
+
= 1.8V, R
L
= open
µA
max
AC Electrical Characteristics
SR
Slew Rate (Note 8)
V/ms
www.national.com
LMC6442
2.2V Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 2.2V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Parameter
Gain-Bandwidth
Product
Phase Margin
(Note 15)
Conditions
Typ
(Note 5)
9.5
63
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
KHz
Degree
Symbol
GBWP
φ
m
5V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Typ
(Note 5)
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
DC Electrical Characteristics
V
OS
TCV
OS
I
B
Input Offset Voltage
Temp. coefficient of
input offset voltage
Input Bias Current
Input Offset Current
Common Mode
Rejection Ratio
Common Mode Input
Capacitance
Power Supply
Rejection Ratio
Input Common-Mode
Voltage Range
V
S
= 2.5 V to 10V
(Note 14)
(Note 14)
−0.1V
V
CM
≤3.5V
−0.75
0.4
±
3
±
4
±
7
±
8
mV
max
µV/˚C
pA
max
pA
max
dB
min
pF
0.005
0.0025
102
4.1
4
2
70
70
4
2
70
70
I
OS
CMRR
C
IN
PSRR
V
CM
95
4.1
75
75
3.85
3.75
−0.2
0
75
75
3.85
3.75
−0.2
0
dB
min
V
min
V
max
dB
min
V
min
mV
max
µA
min
µA
max
V/ms
KHz
Degree
CMRR
50 dB
−0.4
100
94
103
4.99
20
500
350
1.90
A
V
Large Signal Voltage
Gain
Output Swing
Sourcing (Note 11)
Sinking (Note 11)
V
O
= 0.5V to 4.5V
V
ID
= 100 mV
(Note 13)
V
ID
= −100 mV
(Note 13)
80
4.95
4.95
50
50
300
200
200
150
2.4
3.0
2.5
80
4.95
4.95
50
50
300
200
200
150
2.6
3.2
2.5
V
O
I
SC
Output Short Circuit
Current
Sourcing, V
ID
= 100 mV
(Notes 12, 13)
Sinking, V
ID
= −100 mV
(Notes 12, 13)
I
S
Supply Current (2
amplifiers)
Slew Rate (Note 8)
Gain-Bandwidth
Product
Phase Margin
R
L
= open
AC Electrical Characteristics
SR
GBWP
φ
m
4.1
10
(Note 15)
64
3
www.national.com
LMC6442
5V Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Parameter
Total Harmonic
Distortion
Conditions
A
V
= +2, f = 100 Hz,
R
L
= 10MΩ, V
OUT
= 1 Vpp
Typ
(Note 5)
0.08
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
%
Symbol
THD
10V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 10V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Typ
(Note 5)
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
DC Electrical Characteristics
V
OS
TCV
OS
I
B
Input Offset Voltage
Temp. coefficient of
input offset voltage
Input Bias Current
Input Offset Current
Common Mode
Rejection Ratio
Common Mode Input
Capacitance
Power Supply
Rejection Ratio
Input Common-Mode
Voltage Range
V
S
= 2.5 V to 10V
(Note 14)
(Note 14)
−0.1V
V
CM
≤8.5V
−1.5
0.4
±
3
±
4
±
7
±
8
mV
max
µV/˚C
pA
max
pA
max
dB
min
pF
0.005
0.0025
105
3.5
4
2
70
70
4
2
70
70
I
OS
CMRR
C
IN
PSRR
V
CM
95
9.1
75
75
8.85
8.75
−0.2
0
75
75
8.85
8.75
−0.2
0
dB
min
V
min
V
max
dB
min
V
min
mV
max
µA
min
µA
max
V/ms
KHz
Degree
nV/
Hz
CMRR
50 dB
−0.4
120
100
104
9.99
22
2100
900
1.90
A
V
Large Signal Voltage
Gain
Output Swing
Sourcing (Note 11)
Sinking (Note 11)
V
O
= 0.5V to 9.5V
V
ID
= 100 mV
(Note 13)
V
ID
= −100 mV(Note 13)
80
9.97
9.97
50
50
1200
1000
600
500
2.4
3.0
2.5
80
9.97
9.97
50
50
1200
1000
600
500
2.6
3.2
2.5
V
O
I
SC
Output Short Circuit
Current
Sourcing, V
ID
= 100 mV
(Notes 12, 13)
Sinking, V
ID
= −100 mV
(Notes 12, 13)
I
S
Supply Current (2
amplifiers)
Slew Rate(Note 8)
Gain-Bandwidth
Product
Phase Margin
Input-Referred
Voltage Noise
R
L
= open
AC Electrical Characteristics
SR
GBWP
φ
m
e
n
4.1
10.5
(Note 15)
R
L
= open
f = 10 Hz
4
68
170
www.national.com
LMC6442
10V Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 10V, V
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 1 MΩ to V
+
/2.
Boldface
limits apply at the temperature extremes.
Parameter
Input-Referred
Current Noise
Crosstalk Rejection
Conditions
R
L
= open
f = 10 Hz
(Note 9)
Typ
(Note 5)
0.0002
85
LMC6442AI
Limit
(Note 6)
LMC6442I
Limit
(Note 6)
Units
pA/
Hz
dB
Symbol
i
n
Electrical Characteristics (continued)
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2:
Human body model, 1.5 kΩ 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 150˚C. Output currents in excess of
±
30 mA over long term may adversely affect reliability.
Note 4:
The maximum power dissipation is a function of T
J(max)
,
θ
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is P
D
= (T
J(max)
- T
A
)/
θ
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 unless otherwise specified.
Note 7:
Do not short circuit output to V
+
,when V
+
is greater than 13V or reliability will be adversely affected.
Note 8:
Slew rate is the slower of the rising and falling slew rates.
Note 9:
Input referred, V
+
= 10V and R
L
= 10 MΩ connected to 5V. Each amp excited in turn with 1 KHz to produce about 10 Vpp output.
Note 10:
Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings.
Note 11:
R
L
connected to V
+
/2. For Sourcing Test, V
O
>
V
+
/2. For Sinking tests, V
O
<
V
+
/2.
Note 12:
Output shorted to ground for sourcing, and shorted to V+ for sinking short circuit current test.
Note 13:
V
ID
is differential input voltage referenced to inverting input.
Note 14:
Limits guaranteed by design.
Note 15:
See the Typical Performance Characteristics and Application Notes sections for more details.
Typical Performance Characteristics
V
S
= 5V, Single Supply, T
A
= 25˚C unless otherwise
specified
Total Supply Current
vs Supply Voltage
(Negative Input Overdrive)
Total Supply Current
vs Supply Voltage
10006408
10006409
5
www.national.com
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