ADPD103

Data Sheet

Rev. B | Page 10 of 52

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

INT

PDSO

DVDD

AGND

VREF

AVDD

PD1

PD8

NIC

NIC

NIC

NIC

NIC

NIC

1

2

3

4

5

6

7

17

18

19

20

21

16

15

ADPD103

TOP VIEW

(Not to Scale)

NOTES

1. NIC = NONBONDED PAD, CAN BE GROUNDED.

2. EXPOSED PAD (DIGITAL GROUND). CONNECT THE

EXPOSED PAD TO GROUND.

Figure 4. 28-Lead LFCSP Pin Configuration

Table 10. 28-Lead LFCSP Pin Function Descriptions

Pin No.

Mnemonic

Description

1

INT

DO

Interrupt Output.

2

PDSO

DO

Power-Down Status Output.

3

DVDD

S

1.8 V Digital Supply.

4

AGND

S

Analog Ground.

5

VREF

REF

Internally Generated ADC Voltage Reference. Buffer this pin with a 1 µF capacitor to AGND.

6

AVDD

S

1.8 V Analog Supply.

7

PD1

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

8

PD2

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

9

PD3

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

10

PD4

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

11

PDC

AO

Photodiode Common Cathode Bias.

12

PD5

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

13

PD6

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

14

PD7

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

15

PD8

AI

Photodiode Current Input (Anode). If not in use, leave this pin floating.

16 to 22

NIC

R

Not Internally Connected (Nonbonded Pad). This pin can be grounded.

23

LEDX1

AO

LED Driver 1 Current Sink. If not in use, leave this pin floating.

24

LEDX3

AO

LED Driver 3 Current Sink. If not in use, leave this pin floating.

25

LEDX2

AO

LED Driver 2 Current Sink. If not in use, leave this pin floating.

26

LGND

S

LED Driver Ground.

27

SCL

DI

28

SDA

DIO

EPAD (DGND)

S

Exposed Pad (Digital Ground). Connect the exposed pad to ground.

1

DO means digital output, S means supply, REF means voltage reference, AI means analog input, AO means analog output, R means reserved, DI means digital input,

and DIO means digital input/output.