Page 2

RF65

Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

3.4.15. Frequency Error Indicator....................................................................................................................... 26

3.4.16. Automatic Frequency Correction ............................................................................................................ 27

3.4.17. Optimized Setup for Low Modulation Index Systems ............................................................................. 28

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Table of Contents

Page

1.

General Description ................................................................................................................................................. 8

1.1.

Simplified Block Diagram .................................................................................................................................8

1.2.

Pin and Marking Diagram................................................................................................................................... 9

1.3.

Pin Description ......................................................................................................................................10

2.

Electrical Characteristics.......................................................................................................................................... 11

2.1.

ESD Notice....................................................................................................................................................... 11

2.2.

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

2.3.

Operating Range.............................................................................................................................................. 11

2.4.

Chip Specification ................................................................................................................................ 12

2.4.1. Power Consumption ................................................................................................................................. 12

2.4.2. Frequency Synthesis ................................................................................................................................ 12

2.4.3. Receiver ..................................................................................................................................................... 13

2.4.4. Digital Specification .................................................................................................................................. 14

3.

Chip Description...................................................................................................................................................... 15

3.1.

Power Supply Strategy..................................................................................................................................... 15

3.2.

Low Battery Detector........................................................................................................................................ 15

3.3.

Frequency Synthesis........................................................................................................................................ 15

3.3.1. Reference Oscillator ................................................................................................................................. 15

3.3.2. CLKOUT Output .......................................................................................................................................16

3.3.3. PLL Architecture ....................................................................................................................................... .16

3.3.4. Lock Time .................................................................................................................................................17

3.3.5. Lock Detect Indicator................................................................................................................................. 17

3.4.

Receiver Description ...............................................................................................................................17

3.4.1. Block Diagram ........................................................................................................................................... 17

3.4.2. LNA - Single to Differential Buffer .............................................................................................................18

3.4.3. Automatic Gain Control ............................................................................................................................. 18

3.4.4. Continuous-Time DAGC............................................................................................................................ 20

3.4.5. Quadrature Mixer - ADCs - Decimators..................................................................................................... 20

3.4.6. Channel Filter ............................................................................................................................................20

3.4.7. DC Cancellation ........................................................................................................................................21

3.4.8. Complex Filter - OOK ................................................................................................................................22

3.4.9. RSSI ............................................................................................................................................................ 22

3.4.10. Cordic ........................................................................................................................................................ 22

3.4.11. Bit Rate Setting .......................................................................................................................................22

3.4.12. FSK Demodulator ....................................................................................................................................23

3.4.13. OOK Demodulator ..................................................................................................................................24

3.4.14. Bit Synchronizer .................................................................................................................................... 26