SAA3008 Datasheet | Philips Semiconductors

DESCRIPTION The SAA3008 transmitter IC is designed for infrared remote control systems. It has a capacity for 1280 mands arranged in 20 sub-system address groups of 64 mands each. The subsystem address may be selected by press-button, slider switches or be hard-wired. mands are transmitted in patterns which are pulse distance coded. Modulated pulse transmissions allow a narrow-band receiver to be used for improved noise rejection. The modulation frequency of the SAA3008 is 38 k Hz which is 1⁄12 of the oscillator frequency of 455 k Hz (typical). Features - Modulated transmission - Ceramic resonator controlled frequency - Data-word-start with reference time of unique start pattern - Supply voltage range 2 V to 6.5 V - 40 m A output current capability - Very low standby current (< 4 µA at VDD = 6 V) - Up to 20 subsystem address groups; up to 1280 mands - Up to 64 mands per subsystem address; up to 1280 mands - Requires few additional ponents PACKAGE OUTLINES SAA3008P: 20-lead DIL; plastic (SOT146); SOT146-1; 1996 December 6. SAA3008T: 20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 December 6. December 1988 Philips Semiconductors Preliminary specification Infrared remote control transmitter (RECS 80 low voltage) Fig.1 SAA3008 application example. PINNING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Fig.2 Pinning diagram. 19 20 December 1988 3 REMO SEN6N SEN5N SEN4N SEN3N SEN2N SEN1N SEN0N ADRM VSS OSCI OSCO DRV0N DRV1N DRV2N DRV3N DRV4N DRV5N DRV6N VDD positive supply voltage drive outputs to key matrix address/mode control input ground (0 V) oscillator input oscillator output sense inputs from key matrix remote data output Philips Semiconductors Preliminary specification Infrared remote control transmitter (RECS 80 low voltage) FUNCTIONAL DESCRIPTION Key matrix (DRV0N -DRV6N and SEN0N-SEN6N) The transmitter keyboard is arranged as a scanned matrix with seven driver outputs (DRV0N to DRV6N) and seven sensing inputs (SEN0N to SEN6N)...