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| BL9148 General infrared Ray Remote Control Transmitter Description The BL9148 is CMOS LSI developed for use n the general infrared ray remote control transmitter. The circuit has 10 functions ombining with BL9149 while it has 18 functions combining with BL9150.And total 75 commands can be transmitted: 63 commands by continuous keys, as multiple keying is possible, and 12 commands by single-shot keys. Pin Assignment GND XT XT K1 K2 K3 K4 K5 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V DD TX OUT TEST Code K3 K2 K1 K0 DIP 16 PIN Features n n n n n n Wide range of operating supply voltage (VDD=2.2~5.5V) CMOS structure assures extremely low power dissipation Multiple Keying is possible. Less external parts Adaptable to other models as code bits are available. An oscillator can be constructed only by connecting an LC or ceramic resonator. Applications Use as remote control transmitters in audios, air conditioners, toys and others. Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax BL9148 86-64852222 Zip.200233 BL9148 General infrared Ray Remote Control Transmitter Application Circuit V DD =3V 2SA1015 47F 10K 2SC1815 TLN105 10 T1 XOUT 16 15 14 13 V DD TX OUT TEST Code BL9148 GND 1 XT 2 455K XT 3 100p X 8 K1 4 K2 5 K3 6 K4 7 K5 8 12 K3 11 K2 10 K1 9 K0 K1~K6 KEY MATRIX T1~T3 1 7 13 2 8 14 3 9 15 4 10 16 5 11 17 6 12 18 Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 |
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