BT740

Datasheet

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3

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Features & Benefits ................................................................................................................................................5

Application Areas....................................................................................................................................................5

Bluetooth® Profiles Supported...............................................................................................................................5

1

Specifications......................................................................................................................................................6

1.1

Detailed Specifications ...............................................................................................................................6

2

Hardware Specifications.....................................................................................................................................8

2.1

Hardware Specifications.............................................................................................................................8

2.2

Pin Definitions ............................................................................................................................................9

2.3

Electrical Specifications ........................................................................................................................... 11

2.3.1

Absolute Maximum Ratings............................................................................................................. 11

2.3.2

Recommended Operating Parameters............................................................................................ 11

3

I/O Characteristics ........................................................................................................................................... 13

3.1

Power Consumption ................................................................................................................................ 13

3.2

Typical Current Consumption in mA........................................................................................................ 13

4

Functional Description..................................................................................................................................... 14

4.1

UART Interface......................................................................................................................................... 14

4.2

SPI Bus ..................................................................................................................................................... 15

4.3

PCM Interface.......................................................................................................................................... 15

4.4

General Purpose I/O and ADC ................................................................................................................. 15

4.4.1

GPIO................................................................................................................................................. 15

4.4.2

ADC .................................................................................................................................................. 15

4.5

BT740-SA On-board Chip Antenna Characteristics ................................................................................. 15

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Hardware Integration Suggestions.................................................................................................................. 16

5.1

Circuit....................................................................................................................................................... 16

5.2

PCB Layout on Host PCB - General .......................................................................................................... 16

5.3

PCB Layout on Host PCB for BT740-SA .................................................................................................... 17

5.3.1

Antenna keep-out on host PCB ....................................................................................................... 17

5.3.2

Antenna Keep-out and Proximity to Metal or Plastic...................................................................... 18

5.4

External Antenna Integration with BT740-SC.......................................................................................... 18

6

Mechanical Details .......................................................................................................................................... 19

6.1

BT740-SC Mechanical Details .................................................................................................................. 19

6.2

BT740-SA Mechanical Details .................................................................................................................. 19