TDA0161

TDA0161 PROXIMITY DETECTORS . . . OUTPUT CURRENT : 10mA OSCILLATOR FREQUENCY : 10 MHz SUPPLY VOLTAGE : + 4 TO + 35 V Minidip ORDERING NUMBER : TDA0161DP SO8 ORDERING NUMBER : TDA0161FP DESCRIPTION These monolithic integrated circuits are designed for metallic body detection by detecting the variations in high frequency Eddy current losses. With an external tuned circuit they act as oscillators. Output signal level is altered by an approaching metallic object. Output signal is determined by supply current changes. Independent of supply voltage, this current is high or low according to the presence or the absence of a close metallic object. SCHEMATIC DIAGRAM PIN CONNECTION (top view) April 1993 1/6 TDA0161 ABSOLUTE MAXIMUM RATINGS Symbol VCC Tj Tstg Parameter Supply Voltage Junction Temperature Storage Temperature Range Value 35 +150 –55 to +150 Unit V o C o C ELECTRICAL CHARACTERISTICS TDA0161DP -40oC < Tamb < +100oC TDA0161FP -40oC < Tamb < +100oC Ptot < 150mW, unless otherwise specified Symbol VCC ICC ICC Parameter Supply Voltage Reverse Voltage Limitation (ICC = -100 mA) TDA0161 Supply Current, Close Target (Tamb = +25oC) TDA0161 +4V < VCC < +35V Supply Current, Remote Target TDA0161 +4V < VCC < +35V Supply Current Transition Time C3 = 0 C3 ≠ 0 Oscillator Tuning Frequency Output Frequency (C3 = 0) Output Current Ripple - C3 = 0, C2 (pF) > 150/fosc (MHz) Negative Resistance on Terminals A and E 4kΩ < R1 < 50kΩ, fosc< 3 MHz Hysteresis at Detection Point C2 (Pf) > 150...