2

Pinout of ADNS-7550 Optical Mouse Sensor

Pin

Name

Description

1

VCSEL+VE

Positive Terminal of VCSEL

2

LASER_NEN

LASER Enable (Active LOW)

3

NCS

Chip select (active low input)

4

MISO

Serial data output (Master In/Slave Out)

5

SCLK

Serial clock input

6

MOSI

Serial data input (Master Out/Slave In)

7

MOTION

Motion Detect (active low output)

8

XYLASER

XYLASER

9

VDD5

5V Input

10

NC

No Connection

11

GND

Ground

12

RefB

3V output

13

RefA

1.8V regulator output

14

DGND

Digital Ground

15

VDDIO

IO Voltage input (1.65~3.6V)

16

VCSEL-VE

Negative Terminal of VCSEL

Figure 1. Device pin-out for ADNS-7550

Product Number

Vcsel Binning

Lot Code

Date Code

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

Item

Marking

Remarks

Product Number

A7550

Date Code

XYYWWZV

X = Subcon Code

YYWW = Date Code

Z = Sensor Die Source

V = VCSEL Die Source

VCSEL Binning

KL

Lot Code

VVV

Numeric

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PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-7550 Integrated Molded Lead-Frame DIP Sensor