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BTA21 DATASHEET

CONTENT

INTRODUCTION................................................................................................................................. 4

1.1

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

1.2

FEATURES ............................................................................................................................................ 5

1.3

APPLICATIONS ..................................................................................................................................... 6

GENERAL SPECIFICATION ............................................................................................................ 7

PHYSICAL CHARACTERISTIC....................................................................................................... 8

3.1

Pin Description.................................................................................................................................... 9

PHYSICAL INTERFACE…………………………………………………………………………..10

4.1

POWER SUPPLY ................................................................................................................................... .10

4.2

AUDIO

INTERFACES.......................................................................................................................................................10

4.2.1

ADC ........................................................................................................................................... 10

4.2.2

ADC Sample Rate Selection and Warping................................................................................ 11

4.2.3

ADC Gain................................................................................................................................... 11

4.2.4

DAC ........................................................................................................................................... 11

4.2.5

DAC Sample Rate Selection and Warping................................................................................ 11

4.2.6

DAC Gain................................................................................................................................... 11

4.2.7

Mono Operation ......................................................................................................................... 11

4.2.8

Audio Input Stage....................................................................................................................... 12

4.2.9

Microphone Input ...................................................................................................................... ..12

4.2.10

Audio Output Stage .................................................................................................................... 12

4.3

RF INTERFACE .................................................................................................................................... 12

4.4

GENERAL PURPOSE ANALOG IO ......................................................................................................... 12

4.5

GENERAL PURPOSE DIGITAL IO.......................................................................................................... 12

4.6

SERIAL INTERFACES............................................................................................................................ 13

4.6.1

UART ......................................................................................................................................... 13

4.6.3

SPI .............................................................................................................................................. 13

ELECTRICAL CHARACTERISTIC ............................................................................................... 14

5.1

ABSOLUTE MAXIMUM RATING ........................................................................................................... 14

5.2

RECOMMENDED OPERATING CONDITIONS .......................................................................................... 14

5.3

INPUT/OUTPUT TERMINAL CHARACTERISTICS .................................................................................... 14

5.3.1

Digital Terminals........................................................................................................................ 14

5.3.2

Internal CODEC - Analogue to Digital Converter .....................................................................15

5.3.3

Internal CODEC - Digital to Analogue Converter .....................................................................15

5.3.4

Microphone Input ....................................................................................................................... 16

5.3.5

Speaker Output ........................................................................................................................... 16

5.4

POWER CONSUMPTIONS....................................................................................................................... 16

RECOMMENDED TEMPERATURE REFLOW PROFILE......................................................... 17

PACKAGING INFORMATION ....................................................................................................... 18

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