The XR567ACP is a general-purpose tone decoder integrated circuit manufactured by Exar Corporation. This device is designed to detect a specific frequency within an audio signal and provide a logic output when that frequency is present. It is commonly used in applications such as remote control systems, alarm systems, and touch-tone decoding.

Applications:

• Remote control systems
• Alarm systems
• Touch-tone decoding
• Frequency shift keying (FSK) decoders
• Ultrasonic receivers
• Carrier current remote control
• Precision oscillators
• Wide band FSK demodulators

Features:

• Highly stable center frequency
• Adjustable bandwidth
• High noise immunity
• Logic compatible output
• Wide supply voltage range
• Frequency adjustable with a single external resistor

Benefits:

• Precise frequency detection: Stable center frequency ensures accurate detection of the target frequency.
• Flexible bandwidth adjustment: Adjustable bandwidth allows for fine-tuning the decoder to specific application requirements.
• Reliable operation in noisy environments: High noise immunity ensures reliable performance even in noisy environments.
• Easy integration with digital systems: Logic compatible output simplifies interfacing with microcontrollers and other digital circuits.
• Simple frequency adjustment: Frequency can be easily adjusted with a single external resistor.

Additional Details:

The XR567ACP operates from a supply voltage range of 4.75V to 9V. The center frequency is determined by an external timing resistor and capacitor. The bandwidth is adjustable via an external filter capacitor. The output of the decoder is normally high and switches low when the input frequency is within the detection bandwidth. Key specifications include a typical operating frequency range of 0.01Hz to 500kHz, a typical bandwidth of 1% to 14%, and a typical output sink current of 100mA. The device is packaged in an 8-pin DIP package. It provides a cost-effective and reliable solution for tone decoding applications.