LMC567 Datasheet | National Semiconductor

Description The LMC567 is a low power general purpose LMCMOS™ tone decoder which is functionally similar to the industry standard LM567. It consists of a twice frequency voltage-controlled oscillator (VCO) and quadrature dividers which establish the reference signals for phase and amplitude detectors. The phase detector and VCO form a phase-locked loop (PLL) which locks to an input signal frequency which is within the control range of the VCO. When the PLL is locked and the input signal amplitude exceeds an internally pre-set threshold, a switch to ground is activated on the output pin. External ponents set up the oscillator to run at twice the input frequency and determine the phase and amplitude filter time constants. Features n n n n n n n n n n Functionally similar to LM567 2V to 9V supply voltage range Low supply current drain No increase in current with output activated Operates to 500 k Hz input frequency High oscillator stability Ground-referenced input Hysteresis added to amplitude parator Out-of-band signals and noise rejected 20 m A output current capability Block Diagram (with External ponents) DS008670-1 Order Number LMC567CM or LMC567CN See NS Package Number M08A or N08E LMCMOS™ is a trademark of National Semiconductor Corp. © 1999 National Semiconductor Corporation DS008670 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage, Pin 3 Supply Voltage, Pin 4 Output Voltage, Pin 8 Voltage at All Other Pins Output Current, Pin 8 Package Dissipation Operating Temperature Range (TA) 2 Vp- p 10V 13V Vs to Gnd 30 m A 500 m W - 25˚C to +125˚C Storage Temperature Range - 55˚C to +150˚C Soldering Information Dual-In-Line Package Soldering (10 sec.) 260˚C Small Outline Package Vapor Phase (60 sec.) 215˚C Infrared (15 sec.) 220˚C See AN-450 “Surface Mounting Methods and Their Effect on Product...