DESCRIPTION

The M3004LAB1/M3004LDtransmitter IC are designed for infrared remote control systems. It has a total of 448 commands which are divided into 7 sub-system groups with 64 commands each. The sub-system code may be selected by a press but ton, a slider switch or hard wired.The M3004LAB1/M3004LD generate the pattern for driving the output stage. These patterns are pulse distance coded. The pulses are infrared flashes or modulated. The transmission mode is defined in conjunction with the sub-system address. Modulated pulses allow receivers with narrow-band preamplifiers for improved noise rejection to be used. Flashed pulses require a wide-band preamplifier within the receiver.

. FLASHED OR MODULATED TRANSMISSION

. 7 SUB-SYSTEM ADDRESSES

. UP TO 64 COMMANDS PER SUB-SYSTEM ADDRESS

. HIGH-CURRENT REMOTE OUTPUT AT VDD = 6V (– IOH = 80mA)

. LOW NUMBER OF ADDITIONAL COMPONENTS

. KEY RELEASE DETECTION BY TOGGLE BITS

. VERY LOW STAND-BY CURRENT (< 2μA)

. OPERATIONAL CURRENT < 1mA AT 6V SUPPLY

. SUPPLY VOLTAGE RANGE 2 TO 6.5V

. CERAMIC RESONATOR CONTROLLED FREQUENCY (typ. 450kHz)