TH72016KLD Melexis Inc, TH72016KLD Datasheet - Page 6

• Manufacturer Part Number: TH72016KLD
• Description: TRANSMITTER, FSK/ASK, 433MHZ, 10QFN
• Manufacturer: Melexis Inc

Specifications of TH72016KLD

• Transmitting Current: 14.5mA
• Data Rate: 40Kbps
• Frequency Range: 380MHz To 450MHz
• Modulation Type: ASK, FSK
• Rf Ic Case Style: QFN
• No. Of Pins: 10
• Supply Voltage Range: 1.95V To 5.5V
• Operating: RoHS Compliant
• Output Power: 10dBm
• Rohs Compliant: Yes

2.8 Mode Control Logic
The mode control logic allows two different
modes of operation as listed in the following
table. The mode control pin EN is pulled-down
internally. This guarantees that the whole circuit
is shut down if this pin is left floating.
2.9 Clock Output
The clock output CKOUT is CMOS-compatible and can be used to drive a microcontroller. The frequency of
the clock can be changed by the clock divider control signal CKDIV, that can be selected according to the
following table. A capacitor at pin CKOUT can be used to control the clock voltage swing and the spurious
emission.
2.10 Timing Diagrams
After enabling the transmitter by the EN signal, the power amplifier remains inactive for the time t
transmitter start-up time. The crystal oscillator starts oscillation and the PLL locks to the desired output fre-
quency within the time duration t
and then the RF carrier can be FSK or ASK modulated.
39010 72016
Rev. 007
RF carrier
FSKDTA
LOCK
high
high
high
low
low
low
EN
CKDIV
0
1
t
on
Fig. 5:
on
. After successful PLL lock, the LOCK signal turns on the power amplifier,
Timing diagrams for FSK and ASK modulation
Clock divider ratio
Page 6 of 16
16
4
t
LOCK
PSEL
EN
0
1
high
high
high
low
low
low
EN
CKOUT active
TX standby
TX active
t
Clock frequency / fc=433.92MHz
on
Mode
FSK/ASK Transmitter
3.39MHz
TH72016
848kHz
TX / CKOUT
Description
TX disabled
enabled
433MHz
Data Sheet
March/08
on
, the
t