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AD1970 Datasheet(PDF) 2 Page - Analog Devices

Part No. AD1970
Description  Digital BTSC Encoder with Integrated ADC and DAC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD1970 Datasheet(HTML) 2 Page - Analog Devices

 
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AD1970
Rev. 0 | Page 2 of 20
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Package Characteristics (48-Lead LQFP).................................. 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Theory of Operation ........................................................................ 9
Signal Processing ............................................................................ 10
Background of BTSC ................................................................. 10
Performance Factors .................................................................. 10
Separation Alignment ................................................................ 11
Phase Linearity of the External Analog Filter......................... 11
Input Levels ................................................................................. 11
Clocking and PLL....................................................................... 11
Crystal Oscillator........................................................................ 11
General Purpose Input/Output (GPIO) Pins ......................... 11
Power-Up Sequence ................................................................... 11
Control Port .................................................................................... 12
I2C Port Overview ...................................................................... 12
I2C Address Decoding................................................................ 12
Input Level Control.................................................................... 13
Output Level Control................................................................. 13
I2C Read/Write Data Formats................................................... 14
Analog Input/Output ..................................................................... 16
ADC Input................................................................................... 16
DAC Output................................................................................ 16
Serial Data Port........................................................................... 16
Serial Data Modes ...................................................................... 16
Typical Applications Circuit.......................................................... 18
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 19
REVISION HISTORY
4/05—Revision 0: Initial Version


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