SAA3004 Datasheet | Philips Semiconductors

DESCRIPTION The SAA3004 transmitter IC is designed for infrared remote control systems. It has a total of 448 mands which are divided into 7 sub-system groups with 64 mands each. The sub-system code may be selected by a press button, a slider switch or hard wired. The SAA3004 generates 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. The SAA3004 has the following features : - Flashed or modulated transmission - 7 sub-system addresses - Up to 64 mands per sub-system address - High-current remote output at VDD = 6 V (- IOH = 40 m A) - Low number of additional ponents - Key release detection by toggle bits - Very low stand- by current (< 2 µA) - Operational current < 2 m A at 6 V supply - Wide supply voltage range (4 to 11 V) - Ceramic resonator controlled frequency (typ. 450 k Hz) - Encapsulation: 20-lead plastic DIL or 20-lead plastic mini-pack (SO-20) PACKAGE OUTLINES SAA3004P: 20-lead DIL; plastic (SOT146); SOT146-1; 1996 December 11. SAA3004T: 20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 December 11. August 1982 Philips Semiconductors Product specification Remote control transmitter Fig.1 Transmitter with SAA3004. INPUTS AND OUTPUTS Key matrix inputs and outputs (DRV0N to DRV6N and SEN0N to SEN6N) The transmitter keyboard is arranged as a scanned matrix. The matrix consists of 7 driver outputs and 7 sense inputs as shown in Fig.1. The driver outputs DRV0N to DRV6N are open drain N-channel transistors and they are conductive in the stand-by mode. The 7 sense inputs (SEN0N to SEN6N) enable the generation of 56 mand codes. With 2 external diodes all 64 mands are addressable. The sense inputs have P-channel...