beautypg.com

Pin descriptions and equivalent circuits – Rainbow Electronics ADC1175-50 User Manual

Page 4

background image

Pin Descriptions and Equivalent Circuits

(LLP pins in parentheses) (Continued)

Pin

No.

Symbol

Equivalent Circuit

Description

11,

13, 14
(9, 11,

12)

DV

DD

Positive digital supply pin. Connect to a clean, quiet
voltage source of +5V. AV

DD

and DV

DD

should have

a common source and be separately bypassed with
a 10 µF capacitor and a 0.1 µF ceramic chip
capacitor. See Section 4.0 for more information.

2, 24

(22,

24)

DV

SS

The ground return for the digital supply. AV

SS

and

DV

SS

should be connected together close to the

ADC1175-50.

15, 18

(13,

16)

AV

DD

Positive analog supply pin. Connect to a clean,
quiet voltage source of +5V. AV

DD

and DV

DD

should

have a common source and be separately bypassed
with a 10 µF capacitor and a 0.1 µF ceramic chip
capacitor. See Section 4.0 for more information.

20, 21

(18,

19)

AV

SS

The ground return for the analog supply. AV

SS

and

DV

SS

should be connected together close to the

ADC1175-50 package.

ADC1

175-50

www.national.com

4