 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TFDT6501E-TR4 Datasheet(PDF) 8 Page - Vishay Siliconix |
|
||||||||||||||||||||||||||||||
TFDT6501E-TR4 Datasheet(HTML) 8 Page - Vishay Siliconix |
|
|
8 / 17 page  TFDU6101E/TFDS6401/TFDS6501E/TFDT6501E Vishay Semiconductors Rev. B1.6, 02–Nov–00 8 (17) www.vishay.com Document Number 82525 Recommended Circuit Diagram The only required component for designing an IrDA 1.3 solution using Vishay Telefunken transceivers is a current limiting resistor, R1, to the IRED. However, depending on the entire system design and board layout, additional components may be required (see figure KEIN MERKER). IRED Cathode IRED Anode Rxd Vcc GND Txd SD/Mode Mode TFDx6x0xE C2 C1 R2 R1 VCC2 Rxd GND VCC1 SD/Mode Txd Note: outlined components are optional depending on the quality of the power supply Figure 3. Recommended Application Circuit Vishay Telefunken 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/ Mode) and the output Rxd should be directly (DC) coupled to the I/O circuit. R1 is used for controlling the current through the IR emitter. For increasing the output power of the IRED, the value of the resistor should be reduced. Similarly, to reduce the output power of the IRED, the value of the resistor should be increased. For typical values of R1 see figure 4. For IrDA compliant operation, a current control resistor of 7.2 Ω is recommended. For compensating losses of the cos- metic window, reducing that value to 5.6 Ω is acceptable. The upper drive current limitation is dependent on the duty cycle and is given by the absolute maximum ratings on the data sheet. R2, C1 and C2 are optional and dependent on the quality of the supply voltage VCC and injected noise. An unstable power supply with dropping voltage during transmission may reduce sensitivity (and transmission range) of the transceiver. The placement of these parts is critical. It is strongly recommended to position C2 as near as possible to the transceiver power supply pins. An electrolytic capacitor should be used for C1 while a ceramic capacitor is used for C2. Table 1. Recommended Application Circuit Components Component Recommended Value Vishay Part Number C1 4.7 mF, Tantalum 293D 475X9 016B 2T C2 0.1 µF, Ceramic VJ 1206 Y 104 J XXMT R1 5 V supply voltage: 7.2 Ω , 0.25 W (recommend using two 3.6 W, 0.125 W resistors in series) 3.3 V supply voltage: 3.6 Ω , 0.25 W (recommend using two 1.8 W, 0.125 W resistors in series) CRCW–1206–3R60–F–RT1 CRCW–1206–1R80–F–RT1 R2 47 Ω , 0.125 W CRCW–1206–47R0–F–RT1 |
Similar Part No. - TFDT6501E-TR4 |
|
Similar Description - TFDT6501E-TR4 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
