KA2181

KA2181 REMOTE CONTROL PREAMPLIFIER REMOTE CONTROL PREAMPLIFIER The KA2181 is a silicon monolithic integrated circuit designed for a remote control preamplifier of infrared signals. This device has features of low power, high sensitivity and wide supply voltage. 8-SIP FUNCTIONS AMP ABLC LIMITER & LEVEL SHIFT PEAK DET SHAPING FEATURES Wide operation voltage VCC=6 to 14.4V Low power consumption ICC=2.5mA Typ. ORDERING INFORMATION High input sensitivity 50µVP-P Typ. Peak detector Device Package Operating Temperature Small size package 8-SIP KA2181 8-SIP -20°C ~+75°C A minimum number of parts are required Designed for use with the KS5803 remote control transmitter IC. BLOCK DIAGRAM + VCC 6 ~14.4V + Tuning Coil Peak Hold Capacitor 3 BIAS Input Limiter & Level shift PIN-Photo Diode 4 8 Power Supply ABLC 6 By-pass Capacitor 5 Ground Shaping 7 AMP Peak DET 1 Output 2 Integral Capacitor + Fig. 1 KA2181 REMOTE CONTROL PREAMPLIFIER ABSOLUTE MAXIMUM RATINGS (TA=25° C) Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCC PD TOPR TSTG Value 15 270 -20~+75 -45~+125 Unit V mW °C °C RECOMMENDED OPERATING CONDITIONS Characteristic Power Supply Input Frequency Symbol VCC f IN Min. 6.0 30 Typ. 8.5 Max. 14.4 50 Unit V KHz ELECTERICAL CHARACTERISTICS (TA=25° C, VCC=8.5V, fIN=40KHz) Characteristic Symbol ICC VIN 1 VIN 2 AVL υ IN γ IN VOL IOH Test Conditions Min. 1.5 2.1 3.4 40 Typ. 2.5 2.6 4.1 60...