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AS1122

Datasheet - P i n o u t

4 Pinout

Pin Assignments

Figure 2. Pin Assignments (Top View)

Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

1

SDI

Serial Data Input

2

CLKI

Serial Data Clock Input

5

CLKO

Serial Data Clock Output

6

SDO

Serial Data Output

7:12, 19:24

OUT0:OUT11

Constant-Current Outputs 0:11

13

VDD

Power Supply Voltage

14

IRQ

Interrupt Request Output. Open drain pin, can be left open if not used.

15

RST

Reset Input. Pull this pin to high to reset all registers (set to default values) and to put the device into

shutdown. Connect this pin to GND for normal operation.

16

IREF

Reference Current Terminal. A resistor connected to this pin sets the maximum output currents (see

Setting Maximum Channel Current on page 15).

18

GND

Ground

3, 4, 17

NC

Not Connected. Connect to GND if not used.

25

Thermal Pad

Ground. This pin must be connected to GND to ensure normal operation.