Pin

Name

I/O

Description

24

ADC2

I

ADC input 2. Direct input when the ADC is operating in single-ended mode, positive differential input rela-

tive to ADC0 when the ADC is operating in differential mode.

25

ADC_EXT_

REF

I/O

ADC external reference voltage pin. The voltage at this pin can be used by the ADCs as a reference for

ratiometric measurements. With no external voltage or load applied, this pin presents a nominal 2.7 V out-

put through a 2.126 K source resistance. A low impedance external reference voltage in the range of 1 to

2.7 V may be applied to this pin as an option.

26

RSVD

-

Reserved pin. Leave unconnected.

27

RSVD

-

Reserved pin. Leave unconnected.

28

GND

-

Connect to the host circuit board ground plane.

29

RSVD

-

Reserved pin. Leave unconnected.

30

GND

-

Connect to the host circuit board ground plane.

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DNT90MCA/MPA - 09/26/12