MCP6482-ESLASHMS datasheet(5/50 Pages) MICROCHIP

部件名	MCP6482-E/MS

功能描述	4 MHz, Low-Input Bias Current Op Amps

PDF	50 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

5 / 50 page

 2012-2013 Microchip Technology Inc.

DS20002322C-page 5

MCP6481/2/4

1.3

Test Circuits

The circuit used for most DC and AC tests is shown in

Figure 1-1. This circuit can independently set VCM and

VOUT (refer to Equation 1-1). Note that VCM is not the

circuit’s common mode voltage ((VP +VM)/2), and that

VOST includes VOS plus the effects (on the input offset

error, VOST) of temperature, CMRR, PSRR and AOL.

EQUATION 1-1:

FIGURE 1-1:

AC and DC Test Circuit for

Most Specifications.

F RG



DD 2



 2



OUT

DD 2





–

 V

OST





Where:

GDM = Differential Mode Gain

(V/V)

VCM = Op Amp’s Common Mode

Input Voltage

(V)

VOST = Op Amp’s Total Input Offset

Voltage

(mV)

OST

IN +

IN–

–

VDD

VOUT

CB2

CB1

100 k



100 k



VDD/2

100 k



100 k



20 pF

10 k



1µF

100 nF

VIN–

VIN+

6.8 pF

MCP648X

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