LMC567是TI公司的一款锁相环(PLL)/振荡器产品，LMC567是Low Power Tone Decoder，本页介绍了LMC567的产品说明、应用、特性等，并给出了与LMC567相关的TI元器件型号供参考。
LMC567 - Low Power Tone Decoder - 锁相环(PLL)/振荡器 - 特殊逻辑 - TI公司（Texas Instruments，德州仪器）
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 components set up the oscillator to run at twice the input frequency and determine the phase and amplitude filter time constants.
- Functionally Similar to LM567
- 2V to 9V Supply Voltage Range
- Low Supply Current Drain
- No Increase in Current with Output Activated
- Operates to 500 kHz Input Frequency
- High Oscillator Stability
- Ground-referenced Input
- Hysteresis Added to Amplitude Comparator
- Out-of-band Signals and Noise Rejected
- 20 mA Output Current Capability
