AN2719 Freescale Semiconductor / Motorola, AN2719 Datasheet - Page 5

• Manufacturer Part Number: AN2719
• Description: A Transmitter Using Tango3 (Step-by-step Design for ISM Bands)
• Manufacturer: Freescale Semiconductor / Motorola

The transmitter is composed of three parts:
Specifications
This leads to the following definition of the Tango3 RF Module for 433 MHz:
Tango3 RF Module
Schematic
The main improvements over typical application schematics are:
Freescale Semiconductor
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An MCU board with battery and all logic components
A Tango3 RF module with all RF components, reusable for other designs
An antenna
433.92 MHz operating frequency
+10 dBm output power
Output matched to 50 Ω
100% ASK capability (OOK)
100 kHz deviation FSK
Data rate up to 10 kbps with Manchester coding
1.9V–3.6V power supply
Low current
Tango3 circuit with dedicated crystal
Power amplifier using an external transistor
Low-pass matching network between the power amplifier and the 50 Ω output
Additional power amplifier around Q1
Low-pass filtering and impedance matching network to 50 Ω
Figure 3. Transmitter Using the Tango3 RF Module
A Transmitter Using Tango3, Rev. 0
Tango3 RF Module
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