SAK140

I II I SAK140 REVOLUTION COUNTER The SAK140 is a monolithic integrated circuit intended for use as a revolution counter in motor cars. It contains a stabilization circuit and a monostable multivibrator which converts the circuit input pulses into output current pulses of constant duration and amplitude. This pulse duration is determined by an external R -C network; by proper choice of R and C, the circuit can be easily adapted to any milliammeter. Together with the internal stabilization circuitry this makes the indication almost independent of temperature changes and supply voltage variations ~ QUICK REFERENCE DATA Supply voltage Power dissipation at n =6000 rpm; 10 = 12 rnA; Vp == 12 V Input pulse amplitude (pin 1) Output current (pin -9) Vp 10 to 18 V typo 130 mW > 3,5 V < SOmA -- PACKAGE OUTLINE plastic 16-lead dual in-line (see general section). August 1976 II II CIRCUIT DIAGRAM tv 120--~~----~~----~ 05 IUIIII »CIt ~ "-.o 01 013 .---+-------+---+---~--~----~------...