Data Sheet

ManualsBrandsNational Control Devices ManualsIO Expansion & ADCs4-Channel I2C 4-20mA Current Receiver Board w/ I2C Interface

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© 2009 Microchip Technology Inc. DS22226A-page 3

MCP3426/7/8

MCP3427 Functional Block Diagram

MCP3428 Functional Block Diagram

V

SS

V

DD

CH1+

CH1-

PGA

SCL

SDA

MUX

I

2

C

Interface

Gain = 1, 2, 4, or 8

Adr1

Adr0

CH2+

CH2-

Voltage Reference

Clock

(2.048V)

V

REF

ΔΣ ADC

Converter

Oscillator

MCP3427

V

SS

V

DD

CH1+

CH1-

PGA

SCL

SDA

MUX

I

2

C

Interface

Gain = 1, 2, 4, or 8

Adr1

Adr0

CH2+

CH2-

CH3+

CH3-

CH4+

CH4-

Voltage Reference

Clock

(2.048V)

V

REF

ΔΣ ADC

Converter

Oscillator

MCP3428