EVB72016

433MHz FSK/ASK Transmitter

Evaluation Board Description

3901272016 01

Page 1 of 12

EVB Description

Rev. 004

June/07

Features

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Fully integrated PLL-stabilized VCO

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Frequency range from 380 MHz to 450 MHz

!

Single-ended RF output

!

FSK through crystal pulling allows modulation

from DC to 40 kbit/s

!

High FSK deviation possible for wideband data

transmission

!

ASK achieved by on/off keying of internal

power amplifier up to 40 kbit/s

!

Wide power supply range from 1.95 V to 5.5 V

!

Microcontroller clock output

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Very low standby current

!

On-chip low voltage detector

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High over-all frequency accuracy

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FSK deviation and center frequency independ-

ently adjustable

!

Adjustable output power range from

-12 dBm to +10 dBm (at 50

Ω)

!

Adjustable current consumption from

3.8 mA to 11.0 mA

!

Conforms to EN 300 220 and similar standards

Ordering Information

Part No. (see paragraph 5)

EVB72016-433-FSK-C

Note:

EVB default population is FSK, ASK modification according to section 3.1.

Application Examples

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General digital data transmission

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Tire Pressure Monitoring Systems (TPMS)

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Remote Keyless Entry (RKE)

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Wireless access control

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Alarm and security systems

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Garage door openers

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Remote Controls

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Home and building automation

!

Low-power telemetry systems

Evaluation Board Example

General Description

The TH72016 evaluation board is designed to demonstrate the performance of the transmitter IC for conduc-

tive measurements. The power amplifier is matched to 50 Ohms by means of a

π-matching network to oper-

ate at a resonant frequency of 433 MHz.

The EVB72016 also features a clock output applicable to drive a microcontroller. The clock frequency can be

selected by an external logic signal.