參數(shù)資料
型號： GC1012A-CQ
廠商： Texas Instruments, Inc.
英文描述： DIGITAL TUNER CHIP
中文描述： 數(shù)字調(diào)諧器芯片
文件頁數(shù)： 4/30頁
文件大小： 186K
代理商： GC1012A-CQ
GRAYCHIP,INC.
-iii-
FEBRUARY 18, 1998
GC1012A DIGITAL TUNER CHIP
DATA SHEET REV 0.0
This document contains information which may be changed at any time without notice
TABLE OF CONTENTS
1.0
FUNCTIONAL DESCRIPTION ....................................................................................................1
KEY FEATURES................................................................................................................................... 1
BLOCK DIAGRAM................................................................................................................................. 2
CONTROL INTERFACE........................................................................................................................ 2
DIGITAL OSCILLATOR......................................................................................................................... 3
MIXER................................................................................................................................................... 4
PROGRAMMABLE LOW PASS FILTER............................................................................................... 4
GAIN...................................................................................................................................................... 5
OUTPUT FORMATTING....................................................................................................................... 6
POWER DOWN AND KEEPALIVE MODES......................................................................................... 6
THE ONE SHOT PULSE GENERATOR............................................................................................... 6
DIAGNOSTICS...................................................................................................................................... 7
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
2.0
PIN DESCRIPTIONS ...................................................................................................................8
3.0
CONTROL REGISTERS............................................................................................................10
FREQUENCY WORD REGISTERS.................................................................................................... 11
SYNC MODE REGISTER ................................................................................................................... 12
FILTER MODE REGISTER................................................................................................................. 13
GAIN CONTROL REGISTERS ........................................................................................................... 14
OUTPUT MODE REGISTER............................................................................................................... 15
OUTPUT STATUS REGISTER........................................................................................................... 16
ONE SHOT ADDRESS ....................................................................................................................... 17
CHECKSUM REGISTER..................................................................................................................... 17
I AND Q OUTPUT REGISTERS.......................................................................................................... 17
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
SPECIFICATIONS.....................................................................................................................18
ABSOLUTE MAXIMUM RATINGS...................................................................................................... 18
RECOMMENDED OPERATING CONDITIONS.................................................................................. 18
THERMAL CHARACTERISTICS ........................................................................................................ 18
DC CHARACTERISTICS .................................................................................................................... 19
AC CHARACTERISTICS..................................................................................................................... 20
4.1
4.2
4.3
4.4
4.5
5.0
APPLICATION NOTES..............................................................................................................21
POWER AND GROUND CONNECTIONS.......................................................................................... 21
STATIC SENSITIVE DEVICE.............................................................................................................. 21
80 MHZ OPERATION.......................................................................................................................... 21
REDUCED VOLTAGE OPERATION................................................................................................... 21
SYNCHRONIZING MULTIPLE GC1012A CHIPS............................................................................... 22
PROCESSING COMPLEX DATA ....................................................................................................... 22
EXAMPLE RECEIVER ARCHITECTURE........................................................................................... 23
LATENCY THROUGH THE GC1012A................................................................................................ 24
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
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