TI-LM392电压比较器
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FEATURES
ADVANTAGES
A B
1
8
OUTPUT A (Comparator)
V+
INVERTING INPUT B
NONINVERTING INPUT B
OUTPUT B (Operational Amplifier)
4
3
2
5
6
7
GND
NONINVERTING INPUT A
INVERTING INPUT A
− −
+ +
D, DGK, OR P PACKAGE
(TOP VIEW)
DESCRIPTION/ORDERING INFORMATION
LM392
LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR
SLOS466 – JANUARY 2006
• Wide Power-Supply Voltage Range • Additional Comparator Features
– Single Supply: 3 V to 32 V – Low Output Saturation Voltage:
250 mV at 4 mA
– Dual Supply: ±1.5 V to ±16 V
– Output Voltage Compatible With All Types
• Low Supply-Current Drain Essentially
of Logic Systems
Independent of Supply Voltage: 600 µ A
• Low Input Biasing Current: 50 nA
• Low Input Offset Voltage: 2 mV
• Eliminates Need for Dual Power Supplies
• Low Input Offset Current: 5 nA
• An Internally Compensated Operational
• Input Common-Mode Voltage Range Includes
Amplifier and a Precision Comparator in the
Ground
Same Package
• Allows Sensing at or Near Ground
• Differential Input Voltage Range Equals
xxx
Power-Supply Voltage
• Additional Operational Amplifier Features
– Internally Frequency Compensated for
Unity Gain
– Large DC Voltage Gain: 100 dB
– Wide Bandwidth (Unity Gain): 1 MHz
– Large Output Voltage Swing:
0 V to V+ – 1.5 V
The LM392 consists of two independent building-block circuits. One is a high-gain
internally-frequency-compensated operational amplifier, and the other is a precision voltage comparator. Both the
operational amplifier and the voltage comparator are designed to operate from a single power supply over a wide
range of voltages. Both circuits have input stages that force the common-mode input down to ground when
operating from a single power supply. Operation from split power supplies also is possible, and the low
power-supply current is independent of the magnitude of the supply voltage.
Applications include transducer amplifiers with pulse shapers, DC gain blocks with level detectors, and VCOs, as
well as all conventional operational amplifier or voltage-comparator circuits. The LM392 can be operated directly
from the standard 5-V power-supply voltage used in digital systems, and the output of the comparator interfaces
directly with either TTL or CMOS logic. In addition, the low-power drain makes the LM392 extremely useful in the
design of portable equipment.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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