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Uhf ask/fsk transmitter block, Features, Description – Rainbow Electronics ATAR862-8 User Manual

Page 4: Atar862-8, Uhf ask/fsk transmitter block features

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ATAR862-8

4589B–4BMCU–02/03

UHF ASK/FSK Transmitter Block

Features

Integrated PLL Loop Filter

ESD Protection (4 kV HBM/200 V MM, Except Pin 2: 4 kV HBM/100 V MM) also at ANT1/ANT2

High Output Power (5.5 dBm) with Low Supply Current (8.5 mA Typically)

Modulation Scheme ASK/FSK

– FSK Modulation is Achieved by Connecting an Additional Capacitor between the XTAL Load Capacitor and the Open-

drain Output of the Modulating Microcontroller

Easy to Design-in Due to Excellent Isolation of the PLL from the PA and Power Supply

Single Li-cell for Power Supply

Supply Voltage 2.0 V to 4.0 V in the Temperature Range of -40

°C to +85°C/+125°C

Single-ended Antenna Output with High Efficient Power Amplifier

CLK Output for Clocking the Microcontroller

One-chip Solution with Minimum External Circuitry

125

°C Operation for Tire Pressure Systems

Description

The PLL transmitter block has been developed for the demands of RF low-cost transmission systems, at data rates up to
32 kbaud. The transmitting frequency range is 686 MHz to 928 MHz. It can be used in both FSK and ASK systems.