The LM567C is a precision tone decoder designed for frequency detection and signal conditioning in communication and control systems. It offers robust performance in noisy environments and is ideal for tone-based remote control, frequency monitoring, and selective signal detection.

Specifications

• Operating Voltage Range: 4.75 V to 9 V
• Center Frequency Range: 0.01 Hz to 500 kHz
• Power Consumption: Typically 2 mA at 5 V
• Input Signal Level: 25 mV to 500 mV peak
• Output Type: Digital (open collector)
• Package: 8-pin PDIP
• Temperature Range: 0 °C to +70 °C (commercial grade)

Features

• Adjustable Bandwidth: Narrow detection window for precise tone matching
• High Sensitivity: Detects low-level signals with minimal false triggering
• Phase-Locked Loop (PLL) Based: Stable frequency tracking and decoding
• Noise Immunity: Reliable operation in electrically noisy environments
• Easy Tuning: External resistor and capacitor set the center frequency
• Versatile Applications: Remote controls, tone signaling, frequency monitoring

Link to datasheet: https://www.ti.com/lit/ds/symlink/lm567c.pdf