AX5051 Datasheet, PDF (2/44 Pages) ON Semiconductor – Advanced multi-channel single chip UHF transceiver

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Table of Contents
1. Overview..................................................................................................... 5
1.1. Features ....................................................................................................... 5
1.2. Applications .................................................................................................. 5
2. Block Diagram............................................................................................. 6
3. Pin Function Descriptions ........................................................................... 7
3.1. Pin-out Drawing ............................................................................................ 8
4. Specifications.............................................................................................. 9
4.1. Absolute Maximum Ratings ............................................................................. 9
4.2. DC Characteristics ........................................................................................10
Supplies....................................................................................................... 10
Logic ...........................................................................................................12
4.3. AC Characteristics.........................................................................................13
Crystal Oscillator...........................................................................................13
RF Frequency Generation Subsystem (Synthesizer) ...........................................14
Transmitter ..................................................................................................16
Receiver ......................................................................................................16
SPI Timing ...................................................................................................18
5. Circuit Description .................................................................................... 19
5.1. Voltage Regulator .........................................................................................20
5.2. Crystal Oscillator ..........................................................................................20
5.3. SYSCLK Output ............................................................................................21
5.4. Power-on-reset (POR) and RESET_N Input.......................................................21
5.5. RF Frequency Generation Subsystem ..............................................................21
VCO ............................................................................................................22
VCO Auto-Ranging ........................................................................................22
Loop Filter and Charge Pump..........................................................................22
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AX5051