LMC567CM

Functionally Similar to LM567
LMCMOS tone decoder which is functionally similar
? 2-V to 9-V Supply Voltage Range to the industry standard LM567. The device consists
? Low Supply Current Drain of a twice frequency voltage-controlled oscillator
? No Increase in Current With Output Activated (VCO) and quadrature dividers which establish the
reference signals for phase and amplitude detectors.
? Operates to 500-kHz Input Frequency
? High Oscillator Stability The phase detector and VCO form a phase-locked
loop (PLL) which locks to an input signal frequency
? Ground-Referenced Input which is within the control range of the VCO. When
? Hysteresis Added to Amplitude Comparator the PLL is locked and the input signal amplitude
? Out-of-Band Signals and Noise Rejected exceeds an internally pre-set threshold, a switch to
ground is activated on the output pin. External ? 20-mA Output Current Capability