Micrel

MICRF506BML/YML

July 2006

2

M9999-092904

+1 408-944-0800

General Description....................................................................................................................................................1

Features......................................................................................................................................................................1

Applications ................................................................................................................................................................1

RadioWire® RF Selection Guide ................................................................................................................................4

Ordering Information...................................................................................................................................................4

Block Diagram ............................................................................................................................................................4

Pin Configuration ........................................................................................................................................................5

Pin Description............................................................................................................................................................5

Absolute Maximum Ratings

(1) .....................................................................................................................................6

Operating Ratings

(2) ....................................................................................................................................................6

Electrical Characteristics

(4) .........................................................................................................................................6

Programming ..............................................................................................................................................................9

Writing to the control registers in MICRF506 ...........................................................................................................10

Writing to a Single Register ......................................................................................................................................10

Writing to All Registers .............................................................................................................................................11

Writing to n Registers having Incremental Addresses..............................................................................................11

Writing to n Registers having Non-Incremental Addresses......................................................................................12

Reading from the control registers in MICRF506 .....................................................................................................12

Programming interface timing...................................................................................................................................12

Power on Reset ........................................................................................................................................................13

Programming summary ............................................................................................................................................14

Frequency Synthesizer.............................................................................................................................................15

Crystal Oscillator (XCO)........................................................................................................................................16

VCO ......................................................................................................................................................................17

Charge Pump ........................................................................................................................................................18

PLL Filter...............................................................................................................................................................18

Lock Detect ...........................................................................................................................................................18

Modes of Operation ..............................................................................................................................................18

Transceiver Sync/Non-Synchronous Mode..............................................................................................................19

Data Interface ...........................................................................................................................................................19

Receiver....................................................................................................................................................................20

Front End ..............................................................................................................................................................20

Sallen-Key Filters..................................................................................................................................................20

Switched Capacitor Filter ......................................................................................................................................21

RSSI......................................................................................................................................................................21

FEE .......................................................................................................................................................................22

Bit Synchronizer....................................................................................................................................................23

Transmitter................................................................................................................................................................24

Power Amplifier.....................................................................................................................................................24

Modulator ..............................................................................................................................................................26

Using the XCO-tune Bits ..........................................................................................................................................28

Typical Application....................................................................................................................................................30