MCP6V37T-ESLASHMS datasheet(24/50 Pages) MICROCHIP

Part #	MCP6V37T-E/MS

Description	23 關A, 300 kHz Zero-Drift Op Amps

PDF	50 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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24 / 50 page

MCP6V36/6U/7/9

DS20006209A-page 24

 2019 Microchip Technology Inc.

4.4.3

OFFSET VOLTAGE CORRECTION

Figure 4-13 shows MCP6V36 (U2) correcting the input

offset voltage of another op amp (U1). R2 and C2

integrate the offset error seen at U1’s input; the

integration needs to be slow enough to be stable (with

the feedback provided by R1 and R3). R4 and R5

attenuate the integrator’s output; this shifts the

integrator pole down in frequency.

FIGURE 4-13:

Offset Correction.

4.4.4

PRECISION COMPARATOR

Use high gain before a comparator to improve the

latter’s performance. Do not use MCP6V36/6U/7/9 as

a comparator by itself; the VOS correction circuitry does

not operate properly without a feedback loop.

FIGURE 4-14:

Precision Comparator.

MCP6XXX

VDD/2

VIN

VOUT

VDD/2

MCP6V36

VIN

VDD/2

VOUT

MCP6V36

MCP6541

MCP6V37T-E/MS Datasheet(PDF) 24 Page - Microchip Technology