EVB72006
315MHz FSK/ASK Transmitter
Evaluation Board Description
Features
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Fully integrated PLL-stabilized VCO
Frequency range from 290 MHz to 350 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
Very low standby current
On-chip low voltage detector
High over-all frequency accuracy
FSK deviation and center frequency indepen-
dently adjustable
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Adjustable output power range from
-12 dBm to +11 dBm (at 50
Ω)
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Adjustable current consumption from
3.6 mA to 10.7 mA
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Conforms to FCC part 15 and similar standards
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Ordering Information
Part No. (see paragraph 5)
EVB72006-315-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
Tire Pressure Monitoring Systems (TPMS)
Remote Keyless Entry (RKE)
Wireless access control
Alarm and security systems
Garage door openers
Remote Controls
Home and building automation
Low-power telemetry systems
Evaluation Board Example
General Description
The TH72006 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 315 MHz.
The EVB72006 also features a clock output applicable to drive a microcontroller. The clock frequency can be
selected by an external logic signal.
39012 72006 01
Rev. 004
Page 1 of 12
EVB Description
Dec/07
MELEXIS [ Melexis Microelectronic Systems ]
