LM392MDA [NSC]
IC SPECIALTY ANALOG CIRCUIT, UUC, DIE, Analog IC:Other;
| 型号： | LM392MDA |
| 厂家： | 
National Semiconductor |
| 描述： | IC SPECIALTY ANALOG CIRCUIT, UUC, DIE, Analog IC:Other |
| 文件： | 总7页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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August 2000
LM392
Low Power Operational Amplifier/Voltage Comparator
n Power drain suitable for battery operation
n Pin-out is the same as both the LM358 dual op amp and
the LM393 dual comparator
General Description
The LM392 series consists of 2 independent building block
circuits. One is a high gain, internally frequency compen-
sated operational amplifier, and the other is a precision
voltage comparator. Both the operational amplifier and the
voltage comparator have been specifically designed to op-
erate from a single power supply over a wide range of
voltages. Both circuits have input stages which will
common-mode input down to ground when operating from a
single power supply. Operation from split power supplies is
also possible and the low power supply current is indepen-
dent of the magnitude of the supply voltage.
Features
n Wide power supply voltage range
Single supply: 3V to 32V
±
±
1.5V to 16V
Dual supply:
n Low supply current drain—essentially independent of
supply voltage: 600 µA
n Low input biasing current: 50 nA
n Low input offset voltage: 2 mV
n Low input offset current: 5 nA
n Input common-mode voltage range includes ground
n Differential input voltage range equal to the power
supply voltage
Application areas include transducer amplifier with pulse
shaper, DC gain block with level detector, VCO, as well as all
conventional operational amplifier or voltage comparator cir-
cuits. Both circuits can be operated directly from the stan-
dard 5 VDC power supply voltage used in digital systems,
and the output of the comparator will interface directly with
either TTL or CMOS logic. In addition, the low power drain
makes the LM392 extremely useful in the design of portable
equipment.
ADDITIONAL OP AMP FEATURES
n Internally frequency compensated for unity gain
n Large DC voltage gain: 100 dB
n Wide bandwidth (unity gain): 1 MHz
n Large output voltage swing: 0V to V+ − 1.5V
Advantages
n Eliminates need for dual power supplies
n An internally compensated op amp and a precision
comparator in the same package
ADDITIONAL COMPARATOR FEATURES
n Low output saturation voltage: 250 mV at 4 mA
n Output voltage compatible with all types of logic systems
n Allows sensing at or near ground
Connection Diagram
(Amplifier A = Comparator)
(Amplifier B = Operational Amplifier)
Dual-In-Line Package
DS007793-1
(Top View)
Order Number LM392M or LM392MX
See NS Package Number M08A
Order Number LM392N
See NS Package Number N08E
© 2001 National Semiconductor Corporation
DS007793
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.
LM392
Supply Voltage, V+
32V or 16V
±
Differential Input Voltage
Input Voltage
32V
−0.3V to +32V
Power Dissipation (Note 2)
Molded DIP (LM392N)
820 mW
530 mW
Small Outline Package (LM392M)
Output Short-Circuit to Ground (Note 3)
Continuous
50 mA
<
Input Current (VIN −0.3 VDC) (Note 4)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
ESD rating to be determined.
Soldering Information
0˚C to +70˚C
−65˚C to +150˚C
260˚C
Dual-in-Line Package
Soldering (10 seconds)
260˚C
Small Outline Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
215˚C
220˚C
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other
methods of soldering surface mount devices.
Electrical Characteristics
(V+ = 5 VDC; specifications apply to both amplifiers unless otherwise stated) (Note 5)
Parameter
Conditions
LM392
Typ
Units
Min
Max
±
±
5
Input Offset Voltage
TA = 25˚C, (Note 6)
2
mV
nA
Input Bias Current
IN(+) or IN(−), TA =25˚C, (Note 7) , VCM
0V
=
50
250
±
±
50
V+−1.5
Input Offset Current
IN(+) − IN(−), TA = 25˚C
V+ = 30 VDC, TA = 25˚C, (Note 8)
5
nA
V
Input Common-Mode Voltage Range
Supply Current
0
+
∞
∞
RL
RL
=
=
, V = 30 V
1
2
1
mA
mA
dB
+
Supply Current
, V = 5 V
0.5
Amplifier-to-Amplifier Coupling
f = 1 kHz to 20 kHz, TA = 25˚C, Input
Referred, (Note 9)
−100
±
Input Offset Voltage
(Note 6)
7
mV
nA
nA
V
Input Bias Current
IN(+) or IN(−)
IN(+) − IN(−)
V+ = 30 VDC, (Note 8)
400
150
V+−2
32
Input Offset Current
Input Common-Mode Voltage Range
Differential Input Voltage
0
Keep All VIN’s≥ 0 VDC (or V−, if used )
V
(Note 10)
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2
Electrical Characteristics (Continued)
(V+ = 5 VDC; specifications apply to both amplifiers unless otherwise stated) (Note 5)
Parameter
Conditions
LM392
Typ
Units
Min
Max
OP AMP ONLY
Large Signal Voltage Gain
V+ = 15 VDC, Vo swing = 1 VDC to 11 VDC
RL = 2 kΩ, TA = 25˚C
,
25
100
70
V/mV
Output Voltage Swing
RL = 2 kΩ, TA = 25˚C
DC, TA = 25˚C, VCM= 0, VDC to V+−1.5
0
V+−1.5
V
Common-Mode Rejection Ratio
65
dB
VDC
Power Supply Rejection Ratio
Output Current Source
DC, TA = 25˚C
65
20
10
100
40
dB
mA
mA
VIN(+) = 1 VDC, VIN(−) = 0 VDC
V+ = 15 VDC, Vo = 2 VDC, TA = 25˚C
VIN(−) = 1 VDC, VIN(+) = 0 VDC
V+ = 15 VDC, Vo =2VDC, TA = 25˚C
,
Output Current Sink
,
20
VIN(−) = 1 VDC, VIN(+) = 0 VDC
,
12
50
µA
V+ = 15 VDC, Vo =200 mV, TA = 25˚C
Input Offset Voltage Drift
Input Offset Current Drift
COMPARATOR ONLY
Voltage Gain
RS = 0Ω
RS = 0Ω
7
µV/˚C
10
pADC/˚C
RL ≥ 15 kΩ, V+ = 15 VDC, TA = 25˚C
50
6
200
300
V/mV
ns
Large Signal Response Time
VIN = TTL Logic Swing, VREF = 1.4 VDC
VRL = 5 VDC, RL = 5.1 kΩ, TA = 25˚C
Response Time
VRL = 5 VDC, RL = 5.1 kΩ, TA = 25˚C
1.3
16
µs
Output Sink Current
VIN(−) =1 VDC, VIN(+) = 0 VDC
,
mA
VO ≥1.5 VDC, TA = 25˚C
Saturation Voltage
VIN(−) ≥ 1 VDC, VIN(+) = 0,
ISINK ≤ 4 mA, TA = 25˚C
250
400
700
mV
mV
VIN(−) ≥ 1 VDC, VIN(+) = 0,
ISINK ≤ 4 mA
Output Leakage Current
VIN(−) = 0, VIN(+) ≥ 1 VDC
,
0.1
nA
Vo = 5 VDC, TA = 25˚C
VIN(−) = 0, VIN(+) ≥ 1 VDC
,
1.0
µA
Vo = 30 VDC
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2: For operating at temperatures above 25˚C, the LM392 must be derated based on a 125˚C maximum junction temperature and a thermal resistance of
122˚C/W which applies for the device soldered in a printed circuit board, operating in still air ambient. The dissipation is the total of both amplifiers — use external
resistors, where possible, to allow the amplifier to saturate or to reduce the power which is dissipated in the integrated circuit.
+
Note 3: Short circuits from the output to V can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output
+
current is approximately 40 mA for the op amp and 30 mA for the comparator independent of the magnitude of V . At values of supply voltage in excess of 15V,
continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.
Note 4: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP
transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action
+
on the IC chip. This transistor action can cause the output voltages of the amplifiers to go to the V voltage level (or to ground for a large overdrive) for the time
duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns
to a value greater than −0.3V (at 25˚C).
+
Note 5: These specifications apply for V = 5V, unless otherwise stated. For the LM392, temperature specifications are limited to 0˚C ≤ T ≤ +70˚C.
A
+
+
Note 6: At output switch point, V . 1.4V, R = 0Ω with V from 5V to 30V; and over the full input common-mode range (0V to V − 1.5V).
O
S
Note 7: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so
no loading change exists on the input lines.
Note 8: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode
+
voltage range is V − 1.5V, but either or both inputs can go to 32V without damage.
Note 9: Due to proximity of external components, insure that coupling is not originating via the stray capacitance between these external parts. This typically can
be detected as this type of capacitive coupling increases at higher frequencies.
Note 10: Positive excursions of input voltage may exceed the power supply level. As long as the other input voltage remains within the common-mode range, the
comparator will provide a proper output state. The input voltage to the op amp should not exceed the power supply level. The input voltage state must not be less
than −0.3V (or 0.3V below the magnitude of the negative power supply, if used) on either amplifier.
Note 11: The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained.
3
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Schematic Diagram
DS007793-2
Application Hints
Please refer to the application hints section of the LM193 and the LM158 datasheets.
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4
Physical Dimensions inches (millimeters) unless otherwise noted
S.O. Package (M)
Order Number LM392M or LM392MX
NS Package Number M08A
Molded Dual-In-Line Package (N)
Order Number LM392N
NS Package Number N08E
5
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Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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Americas
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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