MCP3422A3-E/ST Ver la hoja de datos (PDF) - Microchip Technology

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MCP3422A3-E/ST

18-Bit, Multi-Channel ΔΣ Analog-to-Digital Converter with I2C™ Interface and On-Board Reference

Microchip Technology 

MCP3422/3/4

The MCP3422 and MCP3423 devices have two

differential input channels and the MCP3424 has four-

differential input channels. All electrical properties of

these three devices are the same except the

differences in the number of input channels and I2C

address bit selection options.

Package Types

The MCP3422 is available in 8-pin SOIC, DFN, and

MSOP packages. The MCP3423 is available in 10-pin

DFN, and MSOP packages. The MCP3424 is available

in 14-pin SOIC and TSSOP packages.

MCP3422

MSOP, SOIC

CH1+ 1

CH1- 2

VDD 3

SDA 4

8 CH2-

7 CH2+

6 VSS

5 SCL

MCP3423

MSOP

CH1+ 1

CH1- 2

VSS 3

CH2+ 4

CH2- 5

10 Adr1

9 Adr0

8 SCL

7 SDA

6 VDD

MCP3422

2x3 DFN*

CH1+ 1

8 CH2-

CH1- 2 EP 7 CH2+

VDD 3

9

6 VSS

SDA 4

5 SCL

MCP3423

3x3 DFN*

CH1+ 1

CH1- 2

VSS 3

CH2+ 4

CH2- 5

10 Adr1

9 Adr0

EP

11 8 SCL

7 SDA

6 VDD

* Includes Exposed Thermal Pad (EP); see Table 3-1.

MCP3424

SOIC, TSSOP

CH1+ 1

CH1- 2

CH2+ 3

CH2- 4

VSS 5

VDD 6

SDA 7

14 CH4-

13 CH4+

12 CH3-

11 CH3+

10 Adr1

9 Adr0

8 SCL

Functional Block Diagram

VSS

VDD

MCP3422

CH1+

CH1-

CH2+

PGA

Voltage Reference

(2.048V)

VREF

ΔΣ ADC

Converter

I2C

Interface

CH2-

Gain = 1,2,4, or 8

Clock

Oscillator

SCL

SDA

DS22088C-page 2

© 2009 Microchip Technology Inc.

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