AS1704

Overview

The AS1704 is a single-channel audio amplifier manufactured by AMS-OSRAM USA INC. It is designed for operation with power supply voltages ranging from 2.7V to 5.5V. The device supports differential signal inputs and provides configurable output impedance settings of 0, 4, or 8 Ohms. It features integrated shutdown control via dedicated pins and is available in compact packages such as the 10-TFSOP and 10-DFN.

Feature Summary

• Supports differential input signal processing
• Configurable output impedance options
• Integrated shutdown mode control

Applications

• Audio circuit evaluation using demoboard testing
• Portable electronic devices requiring low voltage operation
• Headphone and speaker driver circuits

Procurement Notes

Verify the specific package variant (e.g., TFSOP or DFN) against design requirements. Confirm that the manufacturer documentation aligns with current product specifications. Ensure compatibility with the intended power supply range and load impedance settings before integration into final designs.

Selection Notes

Select this component when a single-channel audio amplifier is required for low-voltage applications. Consider the availability of demoboard resources for initial validation. Evaluate the package size constraints relative to the chosen footprint. Verify pinout compatibility if replacing existing designs.

Part Context

This part belongs to the AS1702/3/4/5 family of audio amplifiers. The series shares similar operational characteristics but varies in gain configurations and internal resistor settings. The AS1704 specifically utilizes fixed internal gain settings distinct from the programmable variants within the same family line.

Replacement Considerations

AS1703 and AS1705 are confirmed substitutes within the same family. Verify jumper configurations on evaluation boards when switching between these variants due to differing gain and input resistance settings.