Microchip Technology MCP3424EV Data Sheet

DS22088C-page 2

© 2009 Microchip Technology Inc.

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 I

2

C

address bit selection options. 

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.

4

5

6

9

CH2-

 V

SS

CH3+

Adr1

Adr0

3

12

CH2+

CH3-

2

13

CH1-

CH4+

1

14

CH1+

CH4-

7

8

 SDA

SCL

 V

DD

11

10

2

3

4

7

8

9

CH1-

V

DD

SDA

Adr0

 V

SS

SCL

1

10

CH1+

Adr1

5

6

CH2-

CH2+

2

3

4

5

6

7

CH1-

V

DD

SDA

CH2+

V

SS

SCL

1

8

CH1+

CH2-

2x3 DFN*

V

DD

CH1-

SDA

CH2+

V

SS

1

2

3

4

8

7

6

5 SCL

CH2-

CH1+

* Includes Exposed Thermal Pad (EP); see 

EP

9

3x3 DFN*

V

SS

CH1-

CH2+

Adr0

SCL

1

2

3

4

10

9

8

7 SDA

Adr1

CH1+

EP

11

CH2-

5

6 V

DD

V

SS

V

DD

PGA

SCL

SDA

MUX

I

2

C

Interface

Gain = 1,2,4, or 8

Voltage Reference

Clock

(2.048V)

V

REF

ΔΣ ADC

Converter

Oscillator

CH1+

CH1-

CH2+

CH2-