micrf405 Micrel Semiconductor, micrf405 Datasheet - Page 2

• Manufacturer Part Number: micrf405
• Description: Micrf405 290mhz To 980mhz Ism Band Ask/fsk Transmitter
• Manufacturer: Micrel Semiconductor

April 2006
Table of Contents
General Description ................................................................................................................................................................... 1
Features ..................................................................................................................................................................................... 1
Applications................................................................................................................................................................................ 1
Table of Contents....................................................................................................................................................................... 2
Ordering Information .................................................................................................................................................................. 3
Block Diagram............................................................................................................................................................................ 3
Pin Configuration........................................................................................................................................................................ 4
Absolute Maximum Ratings
Operating Ratings
Electrical Characteristics ............................................................................................................................................................ 5
Electrical Characteristics (cont.)................................................................................................................................................. 6
Data and Configuration Interface ............................................................................................................................................... 7
Data Interface and Data Transfer............................................................................................................................................. 13
Main Modes of Operation ......................................................................................................................................................... 18
Power Amplifier ........................................................................................................................................................................ 18
Frequency Synthesizer............................................................................................................................................................. 19
Crystal Oscillator (XCO) ........................................................................................................................................................... 21
VCO ......................................................................................................................................................................................... 22
Charge Pump and PLL Filter.................................................................................................................................................... 24
Modulation................................................................................................................................................................................ 27
Bit Description .......................................................................................................................................................................... 34
Typical Application Circuit ........................................................................................................................................................ 42
Package Information ................................................................................................................................................................ 45
Micrel
Programming Interface Timing .............................................................................................................................................. 8
Writing to the Control Registers in MICRF405....................................................................................................................... 9
What to write: ........................................................................................................................................................................ 9
How to write:.......................................................................................................................................................................... 9
The two different ways to “program the chip” are: ................................................................................................................. 9
Writing to a Single Register ................................................................................................................................................... 9
How to write:.......................................................................................................................................................................... 9
Writing to All Registers ........................................................................................................................................................ 10
What to write ....................................................................................................................................................................... 10
How to write:........................................................................................................................................................................ 10
Writing to n Registers Having Incremental Addresses......................................................................................................... 10
What to write ....................................................................................................................................................................... 11
Writing to n Registers Having Non-Incremental Addresses................................................................................................. 12
Reading from the Control Registers in MICRF405 .............................................................................................................. 12
Reading from the Interrupt Register .................................................................................................................................... 12
Packet Engine Overview: .................................................................................................................................................... 14
How to transmit a Packet with the Packet Engine: .............................................................................................................. 15
Programming Summary....................................................................................................................................................... 17
Bit rate settings.................................................................................................................................................................... 30
Modulator ............................................................................................................................................................................ 30
Deviation setting.................................................................................................................................................................. 31
Shaping ............................................................................................................................................................................... 31
Modulator saturation............................................................................................................................................................ 31
Lock Detect ......................................................................................................................................................................... 32
Low Dropout Regulator (LDO) and Low Battery Detector.................................................................................................... 33
(2)
................................................................................................................................................................... 5
(1)
..................................................................................................................................................... 5
2
MICRF405
[phone]
M9999-041906