LMP7712MMX

Voltage - Input Offset:	10µV
Base Part Number:	LMP7712
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply, Single/Dual (±):	1.8 V ~ 5.5 V
Current - Output / Channel:	66mA
Current - Supply:	1.3mA
Series:	LMP®, PowerWise®
Current - Input Bias:	0.1pA
Gain Bandwidth Product:	17MHz
Slew Rate:	11.5 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The LMP7712MMX is a high performance instrumentation amplifier IC suitable for precision analog signal conditioning and signal sensing applications. It is a low power, highly-integrated component from Texas Instruments (TI) and features a wide range of features and functions, such as low offset voltage, high common mode rejection ratio, low temperature drift, low power consumption, and high reliability. The IC is basically a single chip solution that contains an amplifying component, an operational amplifier (op-amp), and a buffer amplifier. It offers low noise, high precision, and low power consumption. It is commonly used in signal conditioning and signal sensing applications, such as automotive, aerospace, factory automation and medical/healthcare systems.

Overview

The LMP7712MMX is an ultra-low power, high-performance analog signal conditioning amplifier. The IC combines both a high-precision amplifier and an op-amp in one package to offer excellent signal processing capabilities. It contains an amplifying component, an op-amp, and a buffer amplifier, which together form a complete circuit for signal conditioning and signal sensing. The amplifier is designed for low-power applications, as it consumes only 150 µA of power at supply voltage. The amplifier offers a wide range of features and functions, including low offset voltage, high common mode rejection ratio, low temperature drift, low current consumption and high reliability. The amplifier offers a die-size of just 0.5mm x 1.2mm and operates over the temperature range of -40 °C to +125 °C, making it suitable for a range of applications. The amplifier features low input offset voltage of 0.2 mV, low gain drift of 0.001 %/°C, and a wide common-mode input voltage range up to AVDD + 0.2 V. It also features a high common-mode rejection ratio (CMMR) of 76 dB, low power consumption, and low harmonic distortion. The amplifier is able to provide a high gain of 1.005 to 103 with a bandwidth of 1 MHz and maximum output swing of ±600 mV. The amplifier is ideal for use in applications that involve the conditioning, sensor signal conditioning, temperature compensation, filtering and control.

Working Principle

The LMP7712MMX consists of an inverting amplifier, an op-amp and a buffer amplifier. The inverting amplifier consists of two matched transistors, connected in series, which provide a gain of 1. The op-amp is connected to the inverting amplifier, providing a gain of gain 10,000. The buffer amplifier is connected to the op-amp to provide a gain of 1,000. The three stages of gain form the basis of the LMP7712MMX working principle, providing a net gain of 10 million.The input signal passes through the inverted amplifier stage, with the two matched transistors providing a gain of 1. This helps to reduce common-mode voltage errors on the input and reduce noise. The signal then passes through the op-amp and the buffer amplifier. The op-amp is connected in a gain of 10,000 and provides the required gain for the signal conditioning. The buffer amplifier is connected in a gain of 1,000 and provides the needed output drive characteristics.Overall, the working principle of the LMP7712MMX is to provide a high gain, low noise, and low power Instrumentation Amplifier. It is suitable for precision analog signal conditioning and signal sensing applications.

Applications

The LMP7712MMX is a versatile amplifier IC that can be used in various applications. It is suitable for automotive, aerospace, factory automation, and medical/healthcare systems. The IC is widely used in signal sensing applications, such as automotive chassis vibration monitoring systems, automotive engine control systems, and aerospace fuel pressure feedback systems. It is also used in industrial process control systems, such as process temperature and pressure control systems.The IC is widely used in medical/healthcare systems for measurement and monitoring of patient vital signs, such as heartbeat, respiration, and body temperature. It is also used in medical imaging systems, such as CAT scanners and MRI machines. The IC is also used for motion control applications, such as robotic motors and motion control systems.

Conclusion

The LMP7712MMX is a high performance instrumentation amplifier IC from Texas Instruments (TI) suitable for precision analog signal conditioning and signal sensing applications. It is low power, low noise, and high precision. It contains an amplifying component, an op-amp and a buffer amplifier, which together provide a high gain of 10 million. The IC is integrated into various applications, such as automotive, aerospace, factory automation, and medical/healthcare systems.

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