Texas Instruments Incorporated

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GC1012B 3.3V DIGITAL TUNER CHIP

SLWS138B

This document contains information which may be changed at any time without notice

TABLE OF CONTENTS

1.0

FUNCTIONAL DESCRIPTION .................................................................................................... 1

1.1

KEY FEATURES ....................................................................................................................................1

1.2

BLOCK DIAGRAM .................................................................................................................................2

1.3

CONTROL INTERFACE ........................................................................................................................2

1.4

DIGITAL OSCILLATOR..........................................................................................................................3

1.5

MIXER ....................................................................................................................................................4

1.6

PROGRAMMABLE LOW PASS FILTER................................................................................................4

1.7

GAIN.......................................................................................................................................................5

1.8

OUTPUT FORMATTING ........................................................................................................................6

1.9

POWER DOWN AND KEEPALIVE MODES ..........................................................................................6

1.10

THE ONE SHOT PULSE GENERATOR ................................................................................................6

1.11

DIAGNOSTICS.......................................................................................................................................7

2.0

PIN DESCRIPTIONS ................................................................................................................... 8

3.0

CONTROL REGISTERS............................................................................................................10

3.1

FREQUENCY WORD REGISTERS.....................................................................................................11

3.2

SYNC MODE REGISTER ....................................................................................................................12

3.3

FILTER MODE REGISTER ..................................................................................................................13

3.4

GAIN CONTROL REGISTERS ............................................................................................................14

3.5

OUTPUT MODE REGISTER................................................................................................................15

3.6

OUTPUT STATUS REGISTER ............................................................................................................16

3.7

ONE SHOT ADDRESS ........................................................................................................................17

3.8

CHECKSUM REGISTER .....................................................................................................................17

3.9

I AND Q OUTPUT REGISTERS...........................................................................................................17

4.0

SPECIFICATIONS ..................................................................................................................... 18

4.1

ABSOLUTE MAXIMUM RATINGS .......................................................................................................18

4.2

RECOMMENDED OPERATING CONDITIONS...................................................................................18

4.3

THERMAL CHARACTERISTICS .........................................................................................................18

4.4

DC CHARACTERISTICS .....................................................................................................................19

4.5

AC CHARACTERISTICS .....................................................................................................................20

5.0

APPLICATION NOTES.............................................................................................................. 21

5.1

POWER AND GROUND CONNECTIONS...........................................................................................21

5.2

STATIC SENSITIVE DEVICE ..............................................................................................................21

5.3

100 MHZ OPERATION ........................................................................................................................21

5.4

REDUCED VOLTAGE OPERATION....................................................................................................21

5.5

SYNCHRONIZING MULTIPLE GC1012B CHIPS ................................................................................22

5.6

PROCESSING COMPLEX DATA ........................................................................................................22

5.7

EXAMPLE RECEIVER ARCHITECTURE ............................................................................................23

5.8

LATENCY THROUGH THE GC1012B.................................................................................................24