Table 7-1. Pin Functions (continued)

PIN

I/O(1)

DESCRIPTION

NAME

NO.

EN

6

AI

Device disable input. With POL pin floating, the device is enabled with EN pin floating or pulled low, and

the device is disabled if EN pin is pulled high. With POL pin grounded, the device is enabled with EN pin

pulled high, and the device is disabled with EN pin pulled low or floating.

NC

8

-

No connection. Keep this pin floating or grounded.

Thermal Pad

17

-

Ground reference for the device that is also the thermal pad used to conduct heat from the device. This

connection serves two purposes. The first purpose is to provide an electrical ground connection for the

device. The second purpose is to provide a low thermal-impedance path from the device die to the PCB.

This pad should be tied externally to a ground plane. Ground layer(s) are connected to thermal pad

through vias under thermal pad.

(1)

AI = Analog input, AO = Analog Output, AIO = Analog input Output, DI = Digital input, DO = Digital Output, DIO = Digital input Output,

P = Power

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