LMC6464AMJQML datasheet(19/23 Pages) NSC

Part #	LMC6464AMJQML

Description	LMC6464QML Quad Micropower, Rail-to-Rail Input and Output CMOS Operational Amplifier

PDF	23 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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LMC6464QML

www.ti.com

SNOSAR8A – DECEMBER 2010 – REVISED MARCH 2013

(5)

where

τ = RC = 0.68 seconds

→t1 = 0.27 seconds.

and

(6)

→t2 = 0.75 seconds

Then,

(7)

(8)

= 1 Hz

LOW FREQUENCY NULL

Figure 55. High Gain Amplifier with Low Frequency Null

Output offset voltage is the error introduced in the output voltage due to the inherent input offset voltage VOS, of

an amplifier.

Output Offset Voltage = (Input Offset Voltage) (Gain)

In the above configuration, the resistors R5 and R6 determine the nominal voltage around which the input signal,

VI should be symmetrical. The high frequency component of the input signal VI will be unaffected while the low

frequency component will be nulled since the DC level of the output will be the input offset voltage of the

LMC6464 plus the bias voltage. This implies that the output offset voltage due to the top amplifier will be

eliminated.

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LMC6464AMJQML Datasheet(PDF) 19 Page - National Semiconductor (TI)