The Winbond W91445C is a versatile voiceband codec with integrated features designed for telecommunications and voice recording applications. This chip provides analog-to-digital (ADC) and digital-to-analog (DAC) conversion, enabling it to handle both incoming and outgoing audio signals. Its compact design and low power consumption make it suitable for a wide range of devices.

Applications

• Telephone answering machines
• Voice recorders
• Telecommunication equipment
• Interactive voice response (IVR) systems
• VoIP (Voice over Internet Protocol) devices

Features

• Single 5V power supply operation
• A-Law or μ-Law companding selectable
• Internal anti-aliasing filter
• Programmable gain adjustment
• Low power consumption
• Line drive capability
• 8-kHz sampling rate
• Built-in clock generator or external clock input

Benefits

• High-quality voice reproduction: The W91445C delivers clear and accurate voice signals, ensuring high-quality audio in communication and recording applications.
• Simplified system design: Integration of ADC, DAC, and filtering simplifies the overall system design, reducing component count and board space.
• Low power consumption: Low power consumption makes the W91445C suitable for battery-powered devices, extending their operational life.
• Flexible gain adjustment: Programmable gain settings allow for precise control over signal levels, optimizing audio performance in different environments.
• Cost-effective solution: The W91445C provides a cost-effective solution for voiceband codec applications, offering a balance of performance and price.

The W91445C employs either A-Law or μ-Law companding, selectable to meet various international standards and application requirements. Its internal anti-aliasing filter ensures that the input signals are properly conditioned, preventing unwanted artifacts from being introduced during the analog-to-digital conversion process. The ability to operate from a single 5V power supply simplifies integration into existing systems. The chip's compact package makes it suitable for space-constrained applications. It is designed to provide robust performance over a range of operating conditions, making it a reliable choice for demanding telecommunication and voice recording applications.