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GP2W0110YPS Datasheet(PDF) 6 Page - Sharp Corporation |
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GP2W0110YPS Datasheet(HTML) 6 Page - Sharp Corporation |
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6 / 14 page  GP2W0110YPS/GP2W0114YPS Low Power Infrared Transceiver 6 IrDA Technical Information ELECTRICAL DESIGN APPLICATION TIPS The only external component needed for the GP2W0110YPS/GP2W0114YPS is a capacitor for fil- tering any power supply noise. Application Circuit and External Passive Components The value of the external component CX in these examples is a nominal 10 µF/6.3 V. However, it should be adjusted as necessary for power supply noise and frequency. VLEDA may be connected to VDD or driven sepa- rately from a different voltage source that is within the allowed range. The recommended operating voltage range for VDD is 2.0 V to 3.6 V, and the operating range for VLEDA is 2.0 V to 6.0 V. An example of Split Voltage Source design is shown in Figure 7. VDD provides power only to the receiver electronics. This regulated source can be at a lower potential than VLEDA (the voltage source for the LED). The VLEDA voltage may be directly driven from the battery as shown in Figure 7. The VDD associated with the Receiver interface electronics may be supported by a power regulator or other device providing an efficient regulated lower voltage source. This voltage may be as low as 2.0 V to 3.6 V, and the VLEDA potential may range from 2.0 Volts to 6.0 Volts. An alternative is to connect the VLEDA and VDD pins together as shown in Figure 8. This arrangement allows the GP2W0110YPS/GP2W0114YPS to be used in existing applications where both of these voltage sources are connected. It is footprint and interface compatible with previous SHARP GP2W0102YP/ GP2W0104YP/GP2W0106YP products. Figure 6. GP2W0110YPS/GP2W0114YPS Pin Connections Figure 7. Split Voltage Source Example Figure 8. Combining Voltage Sources 1 NC 2 NC 3 VDD 4 GND GP2W0110YPS-5 CX VDD GND SD RxD TxD 5 SD 6 RxD 7 TxD 8 LEDA LEDA + COMPONENT NOTE: Suitable CX value should be adjusted in accordance with the noise level and the power supply frequency. RECOMMENDED VALUES CX 10 µF/6.3 V (NOTE) RECEIVER INTERFACE ELECTRONICS RxD VLEDA VDD TxD SD GP2W0110YPS-6 RECEIVER INTERFACE ELECTRONICS RxD VLEDA VDD TxD SD GP2W0110YPS-7 |
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