參數(shù)資料
型號(hào)： TRC102
廠商： RF Monolithics, Inc.
英文描述： 400-1000MHz RF Transceiver
中文描述： 400 - 1000MHz的射頻收發(fā)器
文件頁(yè)數(shù)： 5/40頁(yè)
文件大小： 449K
代理商： TRC102
5
These values are what the RF port pins want to “see” as an antenna load for maximum power transfer.
Antennas ideally suited for this would be a Dipole, Folded Dipole, and Loop. For all transmit antenna
applications a bias or “choke” inductor must be included since the RF outputs are open-collector type.
The TRC102 may also drive a single ended 50 Ohm load, such as a monopole antenna, using the
matching circuit as shown in Figure 1. Use of a balun would provide an optimum power transfer, but the
matching circuit of Figure 1 has been optimized for use with discrete components, reducing the cost
associated with use of a balun. The matching component values for a 50 Ohm load for each band are
given in Table 2.
Table 2.
Ref Des
433
C1
5.1pF
C2
2.7pF
C4
.1uF
C7
100pF
L1
36nH
L2
390nH
L3
47nH
Antenna Design Considerations
The TRC102 was designed to drive a differential output such as a Dipole antenna or a Loop. The loop
antenna is ideally suited for applications where compact size is required. The dipole is typically not an
attractive option for compact designs due to its inherent size at resonance and distance needed away
from a ground plane to be an efficient antenna. A monopole antenna can be used with the addition of a
balun or by using the matching circuit in Figure 1.
PCB Layout Considerations
Optimal PCB layout is very critical. For optimal transmit and receive performance, the trace lengths at the
RF pins must be kept as short as possible. Using small, surface mount components, like 0402 or 0603,
will yield the best performance as well as keep the RF port compact. Make all RF connections short and
direct. A good rule of thumb to adhere to is add 1nH of series inductance for every 0.1” of trace length.
The crystal oscillator is also affected by additional trace length as it adds parasitic capacitance to the
overall load of the crystal. To minimize this effect place the crystal as close as possible to the chip and
make all connections short and direct. This will minimize the effects of “frequency pulling” that stray
capacitance may introduce and allows the internal load capacitance of the chip to be more effective in
properly loading the crystal oscillator circuit.
If using an external processor, the TRC102 provides an on-chip clock for that purpose. Even though this
is an integrated function, long runs of the clock signal may radiate and cause interference. This can
degrade receiver performance as well as add harmonics or unwanted modulation to the transmitter.
Keep clock connections as short as possible and surround the clock trace with an adjacent ground plane
pour where needed. This will help in reducing any radiation or crosstalk due to long runs of the clock
signal.
Good power supply bypassing is also essential. Large decoupling capacitors should be placed at the
point where power is applied to the PCB. Smaller value decoupling capacitors should then be placed at
each power point of the chip as well as bias nodes for the RF port. Poor bypassing lends itself to
conducted interference which can cause noise and spurious signals to couple into the RF sections,
significantly reducing performance.
868
2.7pF
1.2pF
.1uF
100pF
8.7nH
100nH
22nH
916
2.7pF
1.2pF
.1uF
100pF
8.7nH
100nH
22nH
相關(guān)PDF資料
PDF描述
TRF2052 LOW-VOLTAGE 2-GHz SYNTHESIZER
TRF2052PW LOW-VOLTAGE 2-GHz SYNTHESIZER
TRF2432_07 Dual-Band IQ/IF TRANSCEIVER WITH DUAL VCO SYNTHESIZERS
TriCore 32-bit microcontrollers(32位微控制器)
TRR-8A33 Connectorized High-speed GaAs PIN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TRC1028 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100M Single Port Transformer Modules
TRC103 功能描述:射頻接收器 Transceiver 868-960 MHz, Multi-chnl FSK RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel
TRC1036 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100M Single Port Transformer Modules
TRC104 功能描述:射頻收發(fā)器 Transceiver 2.4 GHz Multi-channel GFSK RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
TRC1044 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100M Single Port Transformer Modules
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*