Current - Input Bias:	13µA
Base Part Number:	LMH6626
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 (±):	5 V ~ 12 V, ±2.5 V ~ 6 V
Current - Output / Channel:	80mA
Current - Supply:	12mA
Voltage - Input Offset:	100µV
Series:	--
-3db Bandwidth:	85MHz
Gain Bandwidth Product:	1.3GHz
Slew Rate:	360 V/µs
Output Type:	--
Number of Circuits:	2
Amplifier Type:	Voltage Feedback
Part Status:	Active
Packaging:	Tube

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LMH6626MA/NOPB Application Field and Working Principle

Introduction

The LMH6626MA/NOPB is a less-than 32mW single supply, low power, rail-to-rail, instrumentation amplifier that combines low offset and noise with high gain accuracy and wide bandwidth.

Application Field

The LMH6626MA/NOPB is ideal for applications such as sensor conditioning and many data acquisition systems in the following markets:

• Medical
• Instrumentation
• Aerospace/Defense
• Industrial
• Consumer

The amplifier is designed to operate with a single supply voltage of +2.7V to +5.5V. Its design also simplifies layout of the PCB as the amplifier requires minimal external components. The amplifier can also drive cables that are up to 25 feet long.

Working Principle

The LMH6626MA/NOPB Instrumentation Amplifier operates using a differential amplifier, with a gain set by means of external resistors. The differential amplifier is often used to amplify small signals that are difficult to amplify using a single-ended configuration.The differential amplifier amplifies the voltage difference between two inputs, that is it will output a signal, which is the difference between two inputs multiplied by the gain of the amplifier. The amplifier has differential inputs and a single-ended output.The gain of the LMH6626MA/NOPB Amplifier is set by means of external feedback resistors, the amplifier can increase and decrea the gain depending on the ratio of the external resistors. A higher ratio of feedback resistor to sense resistor create a higher gain.The LMH6626MA/NOPB also has a low input-offset voltage and low input-bias current which ensures great accuracy even with low-resolution input signals. It achieves a maximum bandwidth of 50kHz @ +3V supply voltage, and an excellent balance between power and noise requirements.

Conclusion

The LMH6626MA/NOPB instrumentation amplifier is a great choice for many data acquisition systems and sensor conditioning, in both industrial and consumer applications. The amplifier offers low noise, low offset and high gain accuracy, while using minimal external components and a low power consumption. It provides a high bandwidth and ensures great accuracy with its low input-offset voltage and low input-bias current.

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