AK5388EQ - 24-Bit 4-Channel 216kHz Audio ADC | AKM
MPN： AK5388EQ ✗ 停產AK5388EQ 概覽
An audio ADC is a specialized data converter that converts four analog audio inputs into high-resolution digital samples for processing by a digital signal processor, audio codec, or digital mixing console. Audio ADCs occupy the interface portion of the signal chain between analog microphones, line-level sources, and digital audio equipment. Their channel count, sampling rate, dynamic range, distortion, clock architecture, and output interface determine how accurately the source signal can be captured and preserved.
The AK5388EQ provides four simultaneous 24-bit conversion channels at rates up to 216kHz. Its 120dB dynamic range and 110dB S/(N+D) are intended for high-end professional audio systems, while the optional mono mode extends dynamic range to 123dB. I2S-compatible digital output supports integration with digital audio processors. The converter uses AKM's Enhanced Dual Bit modulator architecture and sigma-delta conversion technology to combine high resolution with a digital decimation and filtering stage.
The 44-LQFP package provides separate analog, digital, and power connections for careful board partitioning. Operation is specified for commercial temperature screening from -10°C to 70°C. Supply information identifies operating ranges of 3V to 3.6V for one supply domain and 4.75V to 5.25V for another, allowing compatible analog and digital interface rails to be planned around the surrounding audio system.
Typical applications include professional recording consoles, multichannel digital mixers, studio monitors, broadcast and mastering equipment, digital audio workstations, and high-resolution multichannel converters. The four-channel architecture is particularly useful when capturing several microphones or stereo line pairs without deploying separate converter packages.
PCB implementation should preserve the separation between sensitive analog inputs and digital clock and data paths. Place input and reference-network components close to their associated pins, use a quiet ground-plane strategy, and route the I2S clock and data lines away from analog inputs. The AK5388EQ datasheet pin description and application circuit should govern the final footprint and external component selection.
This product page consolidates the converter's core performance, package, operating conditions, application guidance, verified alternatives, and design considerations into an engineering-focused reference. It supports component selection and board planning while keeping detailed implementation decisions anchored to the manufacturer datasheet.
直接替換替代品，適用於 AK5388EQ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
AK5388AEQ
✅ 直接替換📋 參考替代品（不在目錄中）
AK5388EQ 最大額定值與電氣特性
| ADC Architecture | Sigma-delta |
| Modulator Architecture | Enhanced Dual Bit |
| 解析度 | 24 bit |
| Channel Count | 4 channels |
| 取樣率 | 8kHz to 216kHz |
| Maximum Sampling Rate | 216kHz |
| Dynamic Range | 120dB |
| Signal-to-Noise-plus-Distortion Ratio | 110dB |
| Mono-Mode Dynamic Range | 123dB |
| Digital Audio Interface | I2S |
| Supply Range 1 | 3V to 3.6V |
| Supply Range 2 | 4.75V to 5.25V |
| 工作溫度 | -10°C to 70°C |
| Screening Level | Commercial |
| Package Type | LQFP-44 |
| Package Dimensions | 10mm x 10mm |
| Lead Pitch | 0.80mm |
| Package Construction | Lead-free plastic |
| Total Pin Count | 44 pins |
AK5388EQ lead-free plastic 腳位配置指南
AK5388EQ（lead-free plastic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AK5388EQ.
請參閱 資料表 以查看完整腳位配置。
典型應用
AK5388EQ 適用於 6 應用s: Professional Recording Console, Digital Studio Monitor, Broadcast Audio Processing, Digital Audio Workstation, High-Resolution Mastering System, Multichannel Musical Instrument Interface.
Professional Recording Console
The AK5388EQ fits a multichannel recording console because it converts four analog sources to 24-bit digital audio at rates up to 216kHz while preserving 120dB dynamic range. Its four-channel architecture can handle multiple microphone preamp outputs or stereo line pairs without using separate converter packages. The I2S interface connects the converter to a suitable DSP or digital mixer, while careful partitioning keeps sensitive inputs away from high-speed digital clock traces. The commercial -10°C to 70°C range and lead-free 44-LQFP construction suit controlled indoor equipment environments.
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Digital Studio Monitor
The AK5388EQ can provide high-resolution conversion for a professional digital studio monitor input stage. Its 24-bit operation and sampling rates from 8kHz to 216kHz accommodate high-rate playback and monitoring workflows, while 110dB S/(N+D) helps preserve low-level signal detail. Four channels allow separate conversion of stereo analog inputs and auxiliary monitoring paths. The I2S output can feed a digital signal processor before reconstruction, and the 10mm by 10mm LQFP footprint supports compact but carefully partitioned analog and digital PCB regions.
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Broadcast Audio Processing
The AK5388EQ is suitable for broadcast processing racks that require several high-resolution analog-to-digital conversions. Its four-channel sigma-delta architecture captures stereo program channels plus monitoring or auxiliary channels at up to 216kHz, and its 120dB dynamic range supports demanding studio and mastering workflows. The I2S interface provides a direct digital path to an audio processor, while the 123dB optional mono-mode rating adds headroom for specialized monitoring tasks. Robust grounding, controlled clock distribution, and short analog traces remain essential in shared broadcast equipment.
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Digital Audio Workstation
The AK5388EQ supports the multichannel conversion stage of a digital audio workstation by producing 24-bit samples at rates from 8kHz to 216kHz. Four channels reduce the number of converter packages needed when microphones, instruments, and line sources must be captured simultaneously. Its 110dB S/(N+D) and 120dB dynamic range are appropriate for studio-class recording paths, and I2S provides a straightforward interface to a DSP. Designers should treat the analog input network, reference components, clock source, and digital return path as one tightly controlled conversion subsystem.
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High-Resolution Mastering System
The AK5388EQ is appropriate for a high-resolution mastering and analog-to-digital archiving system that prioritizes low-level signal integrity. The converter provides four 24-bit channels, 120dB dynamic range, and optional 123dB dynamic range in mono mode, with sampling rates extending to 216kHz. Those characteristics support archival capture and critical listening paths when paired with an appropriate low-noise front end. Use the I2S output to reach the mastering DSP, and isolate the converter from high-current switching stages to preserve the measured noise and distortion performance.
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Multichannel Musical Instrument Interface
The AK5388EQ can serve in a multichannel instrument interface that captures several analog sources at high resolution. Its four-channel arrangement accommodates stereo instrument inputs or multiple balanced line channels, while 24-bit operation and 110dB S/(N+D) help retain quiet recording detail. The I2S output transfers data to the interface controller, and the 216kHz maximum rate supports high-resolution capture modes. Board placement should keep connectors and input conditioning away from the I2S clock lines, while the four-channel converter should receive filtering appropriate to each source bandwidth.
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推薦產品摘要
工程參考資料，適用於 AK5388EQ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AK5388AEQ |
|---|---|---|
| Package | 44-LQFP (10mm x 10mm, 0.80mm pitch) | 44-LQFP (10mm x 10mm, 0.80mm pitch) |
| Brand | Asahi Kasei Microdevices | Asahi Kasei Microdevices |
| Resolution | 24 bit | 24 bit |
| Channel Count | 4 channels | 4 channels |
| Dynamic Range | 120dB | 120dB |
| Maximum Sampling Rate | 216kHz | 192kHz |
主要差異化特點
- Higher specified maximum sampling rate in the primary listing (對比AK5388AEQ)
- Four-channel high-resolution conversion in one package (對比AK5388AEQ)
- Documented 120dB dynamic-range class (對比AK5388AEQ)
設計說明
Separate the analog input region from the I2S clock, data, and control paths. Place input filters and reference-network components close to the associated AK5388EQ pins, avoid digital traces beneath sensitive analog inputs, and provide an uninterrupted ground reference beneath the converter. The AK5388EQ uses both 3V-to-3.6V and 4.75V-to-5.25V supply domains, so route and decouple each domain according to the manufacturer application circuit.
Treat the converter clock as a high-priority signal even though the device is primarily an analog ADC. Use short traces from the clock source, avoid routing the clock adjacent to analog input nodes, and follow the recommended termination and filtering arrangement in the AKM manufacturer datasheet. Stable clock timing is important because sampling-edge jitter can degrade the otherwise high 24-bit conversion performance.
Do not substitute AK5388AEQ solely because it shares the AK5388 family name and headline resolution, dynamic range, and channel count. Verify its exact pin functions, supply requirements, package dimensions, clock mode, digital interface, and temperature grade before approving a drop-in change. For a new or revised layout, use the AK5388EQ package drawing and pin table as the controlling mechanical and electrical references.
Keep switching regulators, high-speed memory, and other noisy circuitry away from the analog input and converter ground region. If the switching stage must be nearby, use separate current paths and join them at a controlled ground reference rather than carrying return current beneath the ADC. This arrangement reduces the chance that switching ripple or ground displacement will erode the converter's specified 120dB dynamic range and 110dB S/(N+D).
The AK5388EQ is not a power semiconductor, so a safe-operating-area chart is not applicable. Thermal design should instead rely on the maximum power dissipation and junction-temperature limits in the manufacturer datasheet. Provide adequate copper around the 44-LQFP and avoid enclosing it in a thermally isolated pocket when the enclosure can retain heat. Verify the worst-case supply and clock activity conditions used in the final audio product.
合規資訊
The package is identified as lead-free plastic. RoHS, REACH, halogen-free, and conflict-minerals declarations are not stated in the available component records. AEC-Q100 qualification is not indicated.
