- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384970 > TFBS5711 (Vishay Intertechnology,Inc.) IrDA with Smallest Footprint; Low Profile; PDF資料下載
參數(shù)資料
| 型號： | TFBS5711 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | IrDA with Smallest Footprint; Low Profile; |
| 中文描述： | 紅外線具有體積最小，低輪廓; |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 283K |
| 代理商： | TFBS5711 |
VISHAY
TFBS5711
Vishay Semiconductors
Document Number 82634
Rev. 1.3, 05-Dec-03
www.vishay.com
7
Recommended Circuit Diagram for
IrDA
and Remote Control Operation
In general Vishay transceivers are using the identical
circuit for IrDA and Remote Control operation. For
using the IrDA transceiver as an RC transmitter no
change of the operating circuit is necessary. Used
with a clean low impedance power supply the
TFBS5711 only needs an external series current lim-
iting resistor. However, depending on the entire sys-
tem design and board layout, additional external
components may be required (see figure 1).
The capacitor C1 is buffering the supply voltage and
eliminates the inductance of the power supply line.
This one should be a Tantalum or other fast capacitor
to guarantee the fast rise time of the IRED current.
The resistor R1 is the current limiting resistor and this
is supply voltage dependent, see derating curve in fig-
ure 4, to avoid too high internal power dissipation.
Vishay’s transceivers integrate a sensitive receiver
and a built-in power driver. The combination of both
needs a careful circuit board layout. The use of thin,
long, resistive and inductive wiring should be avoided.
The inputs (Txd, SD) and the output Rxd should be
directly (DC) coupled to the I/O circuit.
The capacitor C2 combined with the resistor R2 is the
low pass filter for smoothing the supply voltage.
R2, C1 and C2 are optional and dependent on the
quality of the supply voltages V
1
and V
2
and injected
noise. An unstable power supply with dropping volt-
age during transmission may reduce the sensitivity
(and transmission range) of the transceiver.
The placement of these parts is critical. It is strongly
recommended to position C2 as close as possible to
the transceiver power supply pins. An Tantalum
capacitor should be used for C1 while a ceramic
capacitor is used for C2.
In addition, when connecting the described circuit to
the power supply, low impedance wiring should be
used.
When extended wiring is used the inductance of the
power supply can cause dynamically a voltage drop
at V
2
. Often some power supplies are not apply to fol-
low the fast current rise time. In that case another 4.7
μ
F (type, see table under C1) at V
2
will be helpful.
Under extreme EMI conditions as placing an RF-
transmitter antenna on top of the transceiver, we rec-
ommend to protect all inputs by a low-pass filter, as a
minimum a 12 pF capacitor, especially at the Rxd
port.
Keep in mind that basic RF - design rules for circuit
design should be taken into account. Especially
longer signal lines should not be used without termi-
nation. See e.g. "The Art of Electronics" Paul Horow-
itz, Winfield Hill, 1989, Cambridge University Press,
ISBN: 0521370957.
Table 1.
Recommended Application Circuit Components
Figure 1. Recommended Application Circuit
IRED Anode
V
cc1
SD
Txd
Rxd
V
2
V
SD
Txd
Rxd
R1
R2
C1
C2
18560
Ground
GND
C3
V
cc2
1
Component
C1
C2
R1
Recommended Value
4.7
μ
F, 16 V
0.1
μ
F, Ceramic
Vishay Part Number
293D 475X9 016B
VJ 1206 Y 104 J XXMT
5 V supply voltage:
5.6
s. text 0.25 W (recommended
using two 2.8
, 0.125 W resistors in series).
3.3 V supply voltage:
2.0
s. text 0.25 W
47
, 0.125 W
e.g. 2 x CRCW-1206-2R0-F-RT1 for 3.3 V supply voltage
R2
CRCW-1206-47R0-F-RT1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TFBS5711-TR1 | Fast Infrared Transceiver Module (MIR, 1.152 Mbit/s) for IrDA |
| TFBS5711-TR3 | Fast Infrared Transceiver Module (MIR, 1.152 Mbit/s) for IrDA |
| TFBS6711 | Fast IrDA with Smallest Footprint; Low Profile; |
| TFBS6711-TR1 | Low Profile Fast Infrared Transceiver (FIR, 4 Mbit/s) for IrDA Applications |
| TFBS6711-TR3 | Low Profile Fast Infrared Transceiver (FIR, 4 Mbit/s) for IrDA Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TFBS5711-TR1 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Fast Infrared Transceiver Module (MIR, 1.152 Mbit/s) for IrDA |
| TFBS5711-TR3 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Fast Infrared Transceiver Module (MIR, 1.152 Mbit/s) for IrDA |
| TFBS6614 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Low Profile 4 Mbit/s (FIR) Infrared Transceiver Module with independent Logic Supply Voltage |
| TFBS6614 | 制造商:Vishay Intertechnologies 功能描述:IRDA TRANSCIEVER |
| TFBS6614-TR3 | 功能描述:紅外收發(fā)器 FIR 4 Mbits/s RoHS:否 制造商:Vishay Semiconductors 波長:900 nm 連續(xù)數(shù)據(jù)傳輸:115.2 Kbit/s 傳輸距離:1 m 輻射強度:60 mW/sr 半強度角度:44 deg 脈沖寬度:2 us 最大上升時間:100 ns 最大下降時間:100 ns LED 電源電壓:- 0.5 V to 6 V 最大正向電流:80 mA 工作電壓:2.4 V to 5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 尺寸:6 mm x 3.1 mm x 1.9 mm 封裝 / 箱體: 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。