LMC6772QMMX/NOPB

Current - Output (Typ):	30mA
Base Part Number:	LMC6772
Supplier Device Package:	8-VSSOP
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C
Hysteresis:	--
Propagation Delay (Max):	10µs
CMRR, PSRR (Typ):	75dB CMRR, 80dB PSRR
Current - Quiescent (Max):	20µA
Series:	--
Current - Input Bias (Max):	0.04pA @ 5V
Voltage - Input Offset (Max):	10mV @ 5V
Voltage - Supply, Single/Dual (±):	2.7 V ~ 15 V, ±1.35 V ~ 7.5 V
Output Type:	Open Drain
Number of Elements:	2
Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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What is LMC6772QMMX/NOPB?

LMC6772QMMX/NOPB is a low-power, quad-channel, rail-to-rail or fixed-output, single/quad-channel comparator integrated circuit. It is an application specific integrated circuit (ASIC) from Texas Instruments, Inc. (TI). LMC6772QMMX/NOPB consists of four comparators with high precision, wide range, low input bias current and high frequency operation. The main function of this device is to compare two voltage or current signals and produce either a complementary or single-ended output.

Application Field of LMC6772QMMX/NOPB

LMC6772QMMX/NOPB is commonly used in a wide range of applications such as automotive, industrial, medical and consumer electronics, to name a few.It offers one of the widest ranges of operating range in COMPARATORs and is capable of low-input bias current, making it suitable for multiple applications. Applications that require accurate and high-frequency comparison of signals, such as motor control, positioning control, and data acquisition, can benefit from its ability to provide low-input bias current, wide range operation and high speed response.It can be used to compare two analogue signals simultaneously and indicate the relationship between them. This device is suitable for use in systems such as switch debouncing, timing circuits, window comparator, detection of temperature/pressure, low-battery detection and analog-to-digital conversion.

Working Principle of LMC6772QMMX/NOPB

The main function of this device is to compare two analogue signals and provide its results in the form of a single-ended or complementary output. The comparator circuitry inside the device consists of two sections—the Input Stage and the Output Stage. In the Input Stage, the two input signals (IN1, IN2) are pre-amplified and provided to the comparator which compares their magnitude. The comparator circuitry also contains an offset voltage which serves to offset the voltage comparison between the two inputs. The Output Stage consists of logic circuitry that produces the output of the device. Depending on the relationship between the two input signals, the output state is either ‘high’ or ‘low’ with a normal recovery time. The device also has two additional features, the Open-Drain Output and the Low-Voltage Detect (LVD). The Open-Drain configuration ensures that the output of the device is not affected by the voltage of the external circuit. This is because the Open-Drain feature pulls the output state ‘low’ when the external circuit is ‘high’, and vice versa. The Low-Voltage Detect (LVD) feature of the device monitors the supply voltage and prevents the output from going ‘high’ or ‘low’ if the supply voltage drops below specified values. This protects the device from damage due to external power supply instability.

Conclusion

LMC6772QMMX/NOPB is an integrated circuit that is used in a wide variety of applications such as automotive, industrial and consumer electronics. It has two main functions, to compare two analogue signals and indicate the relation between them, and to provide a single-ended or complementary output. It can also provide protection against voltage drops due to its open-drain output and low-voltage detect features.

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