AS1122
Datasheet ꢀ Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
Pin Descriptions
Table 1. Pin Descriptions
Pin Number
Pin Name
SDI
Description
Serial Data Input
1
Serial Data Clock Input
Serial Data Clock Output
Serial Data Output
2
CLKI
5
CLKO
6
7:12, 19:24
13
SDO
Constant-Current Outputs 0:11
Power Supply Voltage
OUT0:OUT11
VDD
Interrupt Request Output. Open drain pin, can be left open if not used.
14
IRQ
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.
Reference Current Terminal. A resistor connected to this pin sets the maximum output currents (see
Setting Maximum Channel Current on page 15).
15
16
RST
IREF
Ground
18
3, 4, 17
25
GND
NC
Not Connected. Connect to GND if not used.
Ground. This pin must be connected to GND to ensure normal operation.
Thermal Pad
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