MICRF507 Micrel Semiconductor, MICRF507 Datasheet - Page 2

• Manufacturer Part Number: MICRF507
• Description: 470MHz to 510MHz Low-Power FSK Transceiver
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
RadioWire
Ordering Information ......................................................................................................................................................... 4
Block Diagram .................................................................................................................................................................... 4
Pin Configuration ............................................................................................................................................................... 5
Pin Description ................................................................................................................................................................... 5
Absolute Maximum Ratings
Operating Ratings
Electrical Characteristics
Functional Description .................................................................................................................................................... 10
Clock Generation ............................................................................................................................................................. 15
Crystal Oscillator (XCO) .................................................................................................................................................. 16
Data Interface and Bit Synchronization ......................................................................................................................... 17
Frequency Synthesizer.................................................................................................................................................... 20
Receiver ............................................................................................................................................................................ 24
XCOtune Procedure Example ......................................................................................................................................... 27
Transmitter........................................................................................................................................................................ 28
System Modes and Initialization..................................................................................................................................... 33
Message Coding and Formatting ................................................................................................................................... 34
March 2010
Control (3-wire) Interface ...................................................................................................................................... 10
Reading ................................................................................................................................................................. 13
Control Interface Timing........................................................................................................................................ 14
Power-on Reset .................................................................................................................................................... 14
BITSYNC_CLK (Receiver Bit Synchronization Clock).......................................................................................... 17
BITRATE_CLK (Transmitter Bit Rate Clock) ........................................................................................................ 17
MODULATOR_CLK (VCO Modulator Clock)........................................................................................................ 17
Sync_en = 0 .......................................................................................................................................................... 19
Sync_en = 1 .......................................................................................................................................................... 19
Additional Considerations in the Use of Synchronizer (Sync_en = 1) .................................................................. 19
VCO....................................................................................................................................................................... 22
Charge Pump ........................................................................................................................................................ 22
PLL Filter ............................................................................................................................................................... 22
Lock Detect ........................................................................................................................................................... 23
Front End............................................................................................................................................................... 24
Sallen-Key Filters .................................................................................................................................................. 25
Switched Capacitor Filter ...................................................................................................................................... 25
RSSI ...................................................................................................................................................................... 25
FEE ....................................................................................................................................................................... 26
Power Amplifier ..................................................................................................................................................... 28
Frequency Modulation........................................................................................................................................... 29
Divider Modulation ................................................................................................................................................ 30
VCO Modulation and the Modulator...................................................................................................................... 30
Modulator Filter ..................................................................................................................................................... 32
Start-up and Initialization....................................................................................................................................... 33
Modes of Operation............................................................................................................................................... 33
Mode Transitions................................................................................................................................................... 33
DC Balanced Line Coding..................................................................................................................................... 34
Message Formatting: Preamble............................................................................................................................ 34
®
FSK Transceiver Selection Guide................................................................................................................ 4
(2)
........................................................................................................................................................... 7
(4)
............................................................................................................................................... 7
(1)
........................................................................................................................................... 7
2
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M9999-032210-B
MICRF507