AK4493EQ

AK4493EQ is a high‑performance 32‑bit stereo DAC IC from Asahi Kasei Microdevices (AKM). It uses a delta‑sigma DAC core to convert digital audio into analog output and is designed for hi‑fi and consumer audio applications. It typically accepts PCM digital inputs (via I2S, left‑justified, etc.) at wide sampling rates and can handle DSD data formats, with on‑chip digital filters and programmable options. The device emphasizes high dynamic range and low distortion, making it suitable for compact DAC modules, sound bars, and portable/embedded audio gear. In use, it requires an external I/V stage and a reconstruction/anti‑alias analog filter, plus proper power supply decoupling and grounding. For exact performance specs (SNR, THD+N, max sample rate), interfaces, and pinout, consult the latest AKM AK4493EQ datasheet.

Equivalent high‑end 24‑bit stereo DACs to AK4493EQ include:
- ESS ES9028PRO
- ESS ES9018K2M
- Cirrus Logic CS4398
- TI PCM5102A
- TI PCM1794A
- Analog Devices AD1955
Note: exact pinout, I/V requirements, and performance vary; verify compatibility for your design.

Key features of the AK4493EQ (32-bit DAC):
- 32-bit stereo DAC
- PCM input up to 768 kHz (32-bit)
- DSD input via DoP (up to DSD128, 5.6 MHz)
- Differential current-output requiring external I/V and reconstruction LPF
- Wide dynamic range and low distortion: typical SNR ~120 dB; THD+N ~-110 dB
- Multiple digital filter options (min-phase and linear-phase)
- Flexible digital I/O: I2S, left-justified, right-justified; DSD over PCM
- Soft mute, de-emphasis control, and power-down features
- Low jitter and robust performance for high-end audio applications
Note: AK4493EQ is designed for external analog reconstruction and is commonly used in high-quality DAC designs.

- Pin count: 28 pins (QFN/LQFP variants).
- Function: 2-channel (stereo) 24-bit DAC that decodes PCM audio from a digital input (I2S/left- or right-justified formats) and provides differential current outputs (Iout) for L/R. Requires external I/V conversion and reconstruction (LPF) to produce the analog audio signals.

- Manufacturer: Asahi Kasei Microdevices Corporation (AKM).
- What kind of company: A Japanese semiconductor company that designs and manufactures analog and digital ICs, including audio DACs/ADCs; a subsidiary of Asahi Kasei Corporation, a diversified chemical/materials group.

AK4493EQ is a high-resolution stereo DAC. Typical application areas:
- Consumer hi‑fi and multimedia gear (DACs in amplifiers, CD/DVD/Blu‑ray players, network/streaming players)
- USB/PC audio interfaces and external DAC dongles
- Headphone DAC/amps and desktop audio systems
- Professional audio and production (studio monitors, digital mixers, mastering gear)
- Embedded/OEM solutions (AV receivers, soundbars, set‑top boxes, automotive infotainment)
These cover devices needing high-quality digital-to-analog conversion with low distortion and wide dynamic range.

AK4493EQ is provided in a 28-pin LQFP package.