TRC102 データシートの表示（PDF） - Unspecified

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TRC102

400 - 1000MHz RF Transceiver

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2. Functional Description

The TRC102 is a low power, frequency agile, zero-IF, multi-channel FSK transceiver for use in the 433,

868, and 916 MHz bands. All RF and baseband functions are completely integrated requiring only a

single 10MHz crystal as a reference source and an external low-cost processor. Functions include:

• PLL synthesizer

• Power Amp

• LNA

• I/Q Mixers

• I/Q Demodulators

• Baseband Filters

• Baseband Amplifiers

• RSSI

• Low Battery Detector

• Wake-up Timer/Duty Cycle Mode

• Valid Data Detection/Data Quality

The TRC102 is ideal for Frequency Hopping Spread Spectrum (FHSS) applications requiring frequency

agility to meet FCC and ETSI requirements. Use of a low-cost microcontroller is all that is needed to

create a complete data link. The TRC102 incorporates different sleep modes to reduce overall current

consumption and extend battery life. It is ideal for applications operating from typical lithium coin cells.

2.1 TRC102 Typical Application Circuit

Figure 1. Typical Application Circuit for Monopole Antenna (50 Ohm Load)

RF Transmitter Matching

The RF pins are high impedance and differential. The optimum differential load for the RF port at a given

frequency band is shown in Table 1.

TABLE 1.

TRC102

Admittance

Impedance (Ohm)

L

433 MHz

1.4e-3 – j7.1e-3

27 + j136

52nH

868 MHz

2e-3 – j1.5e-2

8.7 + j66

12.5nH

916 MHz

2.2e-3 – j1.55e-2

9 + j63

11.2nH

4

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