AS1705V

Overview

The AS1705V is a mono audio amplifier IC from the AS1702/3/4/5 series, manufactured by austriamicrosystems (now AMS). It is designed for use on a dedicated demoboard that supports jumper-configurable input resistance, gain, and output impedance. The device operates with a differential signal source and requires a power supply voltage between 2.7V and 5.5V. Key configuration jumpers allow setting the shutdown mode and selecting specific operational parameters for testing and evaluation.

Feature Summary

• Supports configurable gain settings via onboard jumpers
• Allows selection of output impedance for different load conditions
• Features adjustable input resistance for IN+ and IN- terminals
• Includes dedicated measurement points for OUT+, OUT-, and BIAS-GND

Applications

• Audio amplifier evaluation and testing
• Development of portable audio devices
• Demonstration of differential signal processing
• Prototyping of low-voltage audio systems

Procurement Notes

Verify the exact part number suffix to ensure compatibility with the intended application. Confirm the manufacturer's current status as austriamicrosystems has undergone corporate changes. Check for updated datasheets or application notes from the current manufacturer entity to ensure accurate configuration guidelines are followed during design and implementation.

Selection Notes

Select this component when evaluating mono audio amplification within the AS170x family. Ensure the design accommodates the required 2.7V to 5.5V supply range. Consider the available jumper configurations for gain and impedance matching if using the official demoboard for initial validation. Verify pinout and package compatibility with the target PCB layout.

Part Context

The AS1705V belongs to the AS1702/3/4/5 series of audio amplifiers. These components are often evaluated using a common demoboard platform that supports multiple variants in the series. The series is characterized by its flexibility in configuration through external jumpers, allowing engineers to test various operating conditions without modifying the hardware.

Replacement Considerations

The AS1702, AS1703, and AS1704 are part of the same series and share the same demoboard platform. However, jumper settings differ significantly between the AS1702 and the AS1703/04/05 group, particularly regarding input resistance and gain configuration. Direct substitution requires verifying these specific configuration differences.