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SNAD02C

8-CHANNEL 10-BIT ADC

Sonix Technology Co., Ltd 

SNAD02C

8-CHANNEL 10-BIT ADC

======== CONTENTS ========

1. GENERAL DESCRIPTION.......................................................................................................................................3

2. FEATURES....................................................................................................................................................................3

3. APPLICATIONS ..........................................................................................................................................................3

4. BLOCK DIAGRAM.....................................................................................................................................................4

5. PIN ASSIGNMENTS ...................................................................................................................................................4

6. FUNCTIONAL DESCRIPTIONS .............................................................................................................................5

6.1.

INTERFACE FORMAT..................................................................................................................................5

6.2.

CHANNEL SETTING....................................................................................................................................7

6.3.

CONTROL REGISTER SETTING...................................................................................................................7

6.4.

ADC READ TIMING ..................................................................................................................................8

6.5.

TIMING OF DIGITAL INPUT READING........................................................................................................9

6.6.

POWER DOWN & CHANNEL WAKE-UP..................................................................................................10

6.7.

BANDGAP REFERENCE.............................................................................................................................11

6.8.

INPUT CHANNEL PAD (CHANNEL 0~6) .................................................................................................12

6.9.

BATTERY MONITORING (CHANNEL 7 ONLY) .........................................................................................13

7. ELECTRICAL CHARACTERISTICS ..................................................................................................................14

8. APPLICATION CIRCUITS .....................................................................................................................................15

9. EXAMPLE PROGRAMS .........................................................................................................................................16

9.1.

PROGRAM 1: SET CONFIGURATION OF SNAD02C...............................................................................23

9.2.

PROGRAM 2: READ ADC RESULT FROM CHANNEL 1...........................................................................23

9.3.

PROGRAM 3: READ DIGITAL INPUT DATA FROM CH4, CH3, CH2 .......................................................23

9.4.

PROGRAM 4: POWER-DOWN SNAD02C AND HOST, AND WAKE-UP ...................................................24

9.5.

PROGRAM 5: BATTERY LOW DETECTION ..............................................................................................24

10.

PAD DIAGRAM...................................................................................................................................26

Version: 1.3

1

July 31, 2003

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