LM7322MAX/NOPB

Voltage - Input Offset:	700µV
Base Part Number:	LM7322
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply, Single/Dual (±):	2.5 V ~ 32 V, ±1.25 V ~ 16 V
Current - Output / Channel:	100mA
Current - Supply:	2.5mA
Series:	--
Current - Input Bias:	1.1µA
Gain Bandwidth Product:	20MHz
Slew Rate:	18 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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• Introduction

The LM7322MAX/NOPB is a rail-to-rail, low power, instrumentation amplifier and buffer amplifier specifically designed for measurement electronic designs and other applications requiring accurate, high-performance amplification and buffering. It operates from a single 2.7 V to 5.5 V supply and is designed to provide a wide range of gain options with enhanced performance and flexibility. With its operating temperature range extending from -40°C to +105°C and its low quiescent current of 15 μA, this amplifier is tailored for applications in portable and hand-held instruments.

• Application Field

The LM7322MAX/NOPB provides wide dynamic range and accuracy on low-voltage systems and operates in a wide range of circumstances, including automotive, industrial and medical environments.The amplifier is optimally designed for use in portable, battery-powered instrumentation applications, such as multimeters, signal analyzers, handheld meters, portable scopes, and any other instrument requiring accurate amplifier and buffer performance.The LM7322MAX/NOPB also offers a fully protected input stage that prevents damage from over currents or reversing the supply voltage. This protection helps guard against accidental misoperation, eliminating the time-consuming debugging task for system designers.

• Working Principle

The LM7322MAX/NOPB includes a rail-to-rail input stage and buffer to accommodate large input signals and provide precise linearity and AC performance over the full band from DC to the full-power bandwidth of the input signal. The amplifier has a gain range of 1 to 10 and can be set in steps of 0.1 using an external resistor network (EQN). The amplifier can provide up to 10dB of gain with a gain accuracy of ±0.1dB and THD+N of less than -90dB.To ensure disturbance-free operation, the LM7322MAX/NOPB’s output pins are isolated from the input of the previous stage. This isolation enables the current sensing that is necessary for DC applications, providing a high degree of accuracy.The LM7322MAX/NOPB also includes master/slave modes of operation for stereo applications. The master/slave mode allows for split regulated power supplies for each amplifier and keeps the output at a constant level despite changing the input power. This eliminates the need for a separate tracking system or expensive op-amps.

• Conclusion

The LM7322MAX/NOPB is specifically designed for a wide range of measurements and accuracy in portable, low-power applications. Its rail-to-rail input stage and buffer provide precise linearity, low-noise and outstanding AC performance, making it ideal for a variety of instrumentation, industrial, automotive and medical applications. With its operating temperature range extending from -40°C to +105°C and its low quiescent current of 15 μA, the LM7322MAX/NOPB is a great choice for portable and hand-held instruments.

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