MTX-102-433DR-B【PDF 7/10 页】MODULE TRANSMITTER 433MHZ 18DIP

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Sheet目录55

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-Page 7-

MTX-102

UHF AM TRANSMITTER MODULE

Digital Section

Calibration time

Note 5, ASK=HIGH

Power amplifier output hold off time

from STBY

Note 6, STDBY transition from LOW

to HIGH Crystal, ESR < 20ohms

Transmitter Stabilization Time from

STBY

From External Reference (500mVpp)

Crystal, ESR < 20ohms

Maximum Data Rate

Duty cycle of modulating signal=50%

kbits/s

ASK pin

Input high voltage

Input low voltage

0.75VCC 0.6VCC

0.3VCC 0.25VCC

ASK input current

ASK = 0V, 5.0V input current

-10

0.1

礎

Regulator Enable Input

Input Low Voltage

Regulator OFF

0.6

Input High Voltage

Regulator ON

2.0

Enable Input Current

REG-EN = 0.6V; Regulator OFF

0.01

礎

Electrical Characteristics - CONT.

Note 1. Exceeding the absolute maximum rating may damage the device.

Note 2. The device is not guaranteed to function outside its operating rating.

Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series

with 100pF.

Note 4. Supply current and output power are a function of the voltage input on the PC (power control) pin. All

specifications in the Electrical Characteristics table applies for condition VPC = 350mV. Increasing the

voltage on the PC pin will increase transmit power and also increase MARK supply current. Refer to the

graphs "Output Power Versus PC Pin Voltage" and "Mark Current Versus PC Pin Voltage."

Note 5. When the device is first powered up or it loses power momentarily, it goes into the calibration mode

to tune up the transmit antenna.

Note 6. After the release of the STDBY, the device requires an initialization time to settle the REFOSC and

the internal PLL. The first MARK state (ASK HIGH) after exit from STDBY needs to be longer than the

initialization time. The subsequent low to high transitions will be treated as data modulation whereby the

envelope transition time will apply.

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