AK7755EN

Digital Signal Processor Dsp Overview

The AK7755EN is a highly integrated digital signal processor (DSP) and audio CODEC manufactured by Asahi Kasei Microdevices. It features a mono ADC, stereo audio CODEC, microphone pre-amplifier, and line-out amplifier within a 36-pin QFN package. The device operates with a core voltage of 1.20V and I/O voltage of 3.30V, supporting an operating temperature range of -40°C to 85°C. It includes a floating-point DSP with 24-bit word length, running at a clock rate of 18.6MHz, and contains 54kB of on-chip RAM for user-programmable acoustic effects and hands-free functions.

Digital Signal Processor Dsp Feature Summary

• Integrated RAM-based DSP with 24-bit floating point data processing and 2560-step parallel processing power at fs=48kHz.
• Stereo 24-bit ADC with 102dB S/N ratio and Mono 24-bit ADC with 100dB S/N ratio, supporting sampling frequencies from 8kHz to 96kHz.
• Stereo 24-bit DAC with 106dB S/N ratio and single-ended line output amplifiers.
• Supports I2C and SPI interfaces for control, along with a 4-channel digital microphone interface.

Digital Signal Processor Dsp Applications

• High-performance hands-free communication systems
• Acoustic effect processors requiring programmable DSP algorithms
• Audio input/output modules for development platforms such as PIC32 Bluetooth kits

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pin compatibility and electrical specifications. Confirm that the supply chain source provides the original manufacturer's documentation rather than third-party interpretations. Ensure the component matches the 36-QFN package dimensions specified in the official mechanical drawings.

Digital Signal Processor Dsp Selection Notes

Select this component when a combined DSP and CODEC solution is required to minimize board space. The internal LDO allows for simplified power design if DVDD is supplied via the LDOE pin; otherwise, an external 1.2V supply is needed. Ensure the host system supports either I2C or SPI protocols based on the I2CSEL pin configuration.

Digital Signal Processor Dsp Part Context

The AK7755EN belongs to the AK7755 family of audio processors. It is designed for applications needing significant audio processing capabilities within a compact form factor. The device integrates analog front-end components with a powerful digital signal processor, reducing the need for external discrete amplifiers or separate DSP chips.

Digital Signal Processor Dsp Replacement Considerations

The AK7755EN-L is listed as an alternative part number within the same product family. Verify pinout and feature parity before substitution. No other cross-model substitutes are confirmed in the provided documentation.