TRC105 RFM, TRC105 Datasheet - Page 9

• Manufacturer Part Number: TRC105
• Description: IC TXRX 300MHZ-510MHZ 32TQFN
• Manufacturer: RFM

Specifications of TRC105

• Frequency: 300MHz ~ 510MHz
• Data Rate - Maximum: 200kbps
• Modulation Or Protocol: FSK, OOK
• Applications: General Purpose
• Power - Output: 13dBm
• Sensitivity: -112dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 3mA
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN
• Wireless Frequency: 300 MHz to 510 MHz
• Output Power: 13 dBm
• Operating Supply Voltage: 2.1 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 1.7 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, OOK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 583-1159-2

After filtering, the I and Q signals are each amplified by a chain of 11 amplifiers having 6 dB of gain each. The
outputs of these amplifiers and their intermediate 3 dB nodes are used to evaluate the received signal strength
(RSSI). Limiter are located behind the 11 amplifiers of the I and Q chains and the signals at the output of these
limiters are used by the FSK demodulator. The RSSI output is used by the OOK demodulator. The global band-
width of the whole base-band chain is given by the bandwidths of the passive filter, the Butterworth filter, the am-
plifier chain and the limiter. The maximum achievable global bandwidth when the bandwidths of the first three
blocks are programmed at their upper limit is about 350 kHz.
2.4 Crystal Oscillator
Crystal specifications for the TRC105 reference oscillator are given in Table 3. RFM recommends the XTL1020
crystal which is specifically designed for use with the TRC105. Note that crystal frequency error will directly trans-
late to carrier frequency, bit rate and frequency deviation error.
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Nominal frequency
Load capacitance for Fs
Motional resistance
Motional capacitance
Shunt capacitance
Calibration tolerance at 25 °C
Stability over temperature range
(-40 °C to 85 °C)
Aging in first 5 years
Specification
Technical support +1.800.704.6079
Figure 5
Table 3
13.5
Min
5
1
1
-
-
-
-
(fundamental)
12.80000
Typical
15
-
-
-
-
-
Max
16.5
±10
±15
50
20
±2
7
-
ppm (1)
ppm/yr
Units
MHz
ppm
pF
pF
fF
Ω
TRC105 - 11/01/10
Page 9 of 66