FSK transmitter chip - RF02

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Datasheet:

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Description

HOPE's RF02 is a single chip, low power, multi-channel FSK transmitter designed for use in applications requiring FCC or ETSI conformance for unlicensed use in the 433, 868, and 915MHz bands. Used in conjunction with Hope's FSK receiver, the RF02 transmitter features flexible, low cost, and highly integrated solution that does not require production alignments. All required RF functions are integrated. Only an external crystal and bypass filtering are needed for operation.

The RF02 features a completely integrated PLL for easy RF design, and its rapid settling time allows for fast frequency hopping, bypassing multipath fading and interference to achieve robust wireless links. In addition, highly stable and accurate FSK modulation is accomplished by direct closed-loop modulation with bit rates up to 115.2 kbps. The PLL's high resolution allows the use of multiple channels in any of the bands.

The integrated power amplifier of the transmitter has an open-collector differential output that directly drive a loop antenna with programmable output level. No additional matching network is required. An automatic antenna tuning circuit is built in to avoid costly trimming procedures and de-tuning due to the "hand effect".

For low-power applications, the device supports automatic activation from sleep mode. Active mode can be initiated by several wake-up events (on-chip timer timeout, low supply voltage detection).

FEATURES

Fully integrated (low BOM, easy design-in)
No alignment required in production
Fast settling, programmable, high-resolution PLL
Fast frequency hopping capability
Stable and accurate FSK modulation with programmable deviation
Programmable PLL loop bandwidth
Direct loop antenna drive
Automatic antenna tuning circuit
rogrammable output power level
PI bus for applications with microcontroller
Clock output for microcontroller
Integrated programmable crystal load capacitor
Multiple event handling options for wake-up activation
Wake-up timer
Low battery detection
2.2 to 5.4 V supply voltage
Low power consumption
Low standby current (0.3µA)
Compact 16-pin TSSOP package
Transmit bit synchronization

TYPICAL APPLICATIONS

Remote control
Home security and alarm
Wireless keyboard/mouse and other PC peripherals
Toy control
Remote keyless entry
Tire pressure monitoring
Telemetry
ersonal/patient data logging
Remote automatic meter reading

Programming Guide

RF02 transmitter programming guide