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figure 4: Typical performance curves

POWER SUPPLY REQUIREMENTS

The transmitter module requires a clean, well-regulated voltage. While it is

preferable to power the unit from a battery, the unit can also be powered from

a power supply as long as noise and ‘hash’ is less than 20mV. A 10µF

capacitor to ground on pin 5 (Vcc) and a 10

Ω series resistor will help in cases

where the quality of supply power is poor.

The module is not reverse polarity protected. Reverse supply voltages will

cause permanent damage. External polarity protection is recommended.

Figure 5: Suggested supply filter