DIO2240

Version 1.2, Jan 2026

www.dioo.com

© 2026 Dioo Microcircuits Co., Ltd. Jiangsu

1

1. Pin Assignment and Functions

Figure 1. TSSOP-8 (Top view)

Figure 2. SOIC-8 (Top view)

Figure 3. MSOP-8 (Top view)

Pin No.

Pin Name

I/O

Description

TSSOP-8

SOIC-8 /

MSOP-8

1

4

NC

-

No internal connection. Connect to ground or leave floating

2

8

IN+

Analog input

Connect to supply side of shunt resistor

3

1

IN-

Analog input

Connect to load side of shunt resistor

4

2

GND

Analog

Ground

5

6

VS

-

Power supply. 2.7 V to 5.5 V

6

3

REF2

Analog input

Reference 2 voltage. Connect to 0 V to VS (1)

7

7

REF1

Analog input

Reference 1 voltage. Connect to 0 V to VS (1)

8

5

OUT

Analog output

Output voltage

Note:

(1) Do not connect the REF1 pin or the REF2 pin to any voltage source lower than GND or higher than VS.