AK4430ET - 24-Bit 192kHz Stereo DAC | Asahi Kasei
料号： AK4430ET ✗ 停产AK4430ET 概述
An audio DAC is a signal-conversion component that accepts digital audio samples and converts them into continuous analog voltages for amplifiers, headphones, powered speakers, or line-level equipment. The AK4430ET belongs to the delta-sigma DAC, audio DAC, digital-to-analog converter, and integrated audio-converter hierarchy. It combines a digital audio interface, a multi-bit modulator-based conversion stage, and analog output buffering within one device.
Principal features include 24-bit resolution, a maximum conversion rate of 192 ksps, two DAC channels, bipolar voltage output, and a 3.3 V single-supply operating range of 3 V to 3.6 V. The integrated output buffer supports a 2 Vrms signal level, reducing the need for a separate output-amplifier stage in many conventional line-output designs. A typical signal-to-noise ratio of 104 dB is listed for the device.
The multi-bit modulator architecture is intended to preserve linearity and improve total harmonic distortion plus noise performance. A charge pump in the output-buffer section generates the negative internal rail required for ground-referenced output. This architecture allows the converter to produce bipolar analog signals from a single positive supply while maintaining a compact 16-pin TSSOP footprint measuring approximately 4.4 mm by 5 mm.
Typical uses include digital audio players, compact hi-fi stereo systems, USB or network audio conversion, multichannel home-audio equipment, and powered-speaker input stages. The I2S interface makes the converter suitable for systems in which a digital audio processor or receiver supplies serialized stereo samples. The integrated buffer is particularly useful where component count, analog-output level, and board area are important design priorities.
A critical design consideration is the relationship between the 3 V to 3.6 V supply range, the selected output level, and the downstream amplifier input range. Designers should follow the manufacturer datasheet for pin assignments, supported audio formats, clock requirements, digital-interface voltages, and recommended decoupling. The component must be treated as an obsolete part, so new production designs should normally require an availability and lifecycle review before schematic release.
This page organizes the AK4430ET specifications, obsolete-product status, package information, application guidance, comparison framework, and sourcing workflow into one engineering-focused reference. It also identifies the absence of a verified drop-in substitute rather than presenting functionally similar converters as PCB-compatible replacements.
直接替换替代料： AK4430ET ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料AK4430ET 最大额定值与电气特性
| Converter Type | Stereo audio delta-sigma DAC |
| 分辨率 | 24 bit |
| Maximum Conversion Rate | 192 ksps |
| Number of DAC Channels | 2 channels |
| Number of Outputs per Chip | 2 outputs |
| Digital Audio Interface | I2S |
| Nominal Supply Voltage | 3.3 V |
| 工作电源电压 | 3 V to 3.6 V |
| Supply Type | Single supply |
| Integrated Output Buffer | 2 Vrms output buffer |
| Output Polarity | Bipolar voltage |
| Signal-to-Noise Ratio | 104 dB typical |
| 工作温度 | -20 °C to +85 °C |
| 封装 | 16-pin TSSOP |
| Package Length | 5 mm maximum |
| Package Width | 4.4 mm |
| Package Height | 0.9 mm maximum |
| 安装类型 | Surface mount |
| RoHS 状态 | Compliant |
| 生命周期状态 | Obsolete |
| Automotive Qualification | Not applicable |
AK4430ET 0.9 mm maximum 引脚配置指南
AK4430ET（0.9 mm maximum 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： AK4430ET.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AK4430ET 适用于 6 应用s: Compact Hi-Fi Digital Audio Player, Powered Stereo Speaker Input, USB and Network Audio Conversion, Digital Audio Receiver and TV System, Multichannel Home-Audio Expansion, Legacy Audio Equipment Repair.
Compact Hi-Fi Digital Audio Player
The AK4430ET fits compact stereo players that receive digital audio from a USB interface, network streamer, or embedded audio processor. Its 24-bit resolution and 192 ksps maximum rate support high-resolution PCM streams, while the integrated 2 Vrms buffer can feed a line-level amplifier without a separate output stage. The 16-pin TSSOP package also limits board area in portable or compact enclosures. The system designer should confirm that the source interface supplies a compatible I2S format and clock arrangement, and that the downstream amplifier accepts the converter’s bipolar 2 Vrms output.
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Powered Stereo Speaker Input
A powered-speaker module can use the AK4430ET to convert a digital stereo stream into a conventional analog line-level signal. The device’s two 2 Vrms outputs provide a useful starting point for an amplifier input, while its 104 dB typical signal-to-noise ratio supports audio playback with relatively low converter noise. The integrated charge pump permits ground-referenced operation from one positive supply, reducing the number of external supply rails. Confirm the powered amplifier’s input sensitivity, clipping level, and grounding arrangement so the full-scale DAC output does not overload its input stage.
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USB and Network Audio Conversion
The AK4430ET is suitable for the analog-output stage of a USB or network audio source that provides I2S data. Its interface supports digital audio rates up to 192 ksps, allowing it to accommodate high-resolution content when the upstream USB, network, or audio receiver supports the corresponding rate. The integrated 2 Vrms buffer simplifies the transition to an analog amplifier. Designers must verify master-clock generation, I2S word alignment, bit depth, de-emphasis requirements, and logic-level compatibility with the digital audio controller.
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Digital Audio Receiver and TV System
A digital television, set-top box, or home-theater receiver can use the AK4430ET to generate analog stereo audio from an I2S source. The 192 ksps capability supports high-rate digital streams, while the dual output channels and integrated buffer provide a compact path to a line amplifier or volume-control stage. Because the converter is obsolete, it is best suited to an existing platform refresh or a previously qualified architecture. Verify the television audio processor’s clocking, channel format, mute behavior, and analog-routing requirements before committing the design.
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Multichannel Home-Audio Expansion
Multiple AK4430ET devices can support additional stereo playback channels in a multichannel home-audio or media system. Each converter provides two 24-bit outputs at rates up to 192 ksps, allowing separate channel pairs to feed amplifiers or active speakers. A shared digital audio source may require synchronized clocks, and each device needs suitable local decoupling. The implementation must also account for channel-to-channel gain matching, amplifier input limits, and ground-return design because the converter’s 2 Vrms output can be high enough to clip a low-gain input stage.
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Legacy Audio Equipment Repair
The AK4430ET is directly relevant to maintenance and repair of legacy digital audio equipment because it is identified as obsolete. Replacing a failed unit in an existing board requires an exact package, pinout, supply, clock, and output-stage match rather than merely a similar converter. The 16-pin TSSOP format and specified 3 V to 3.6 V operating range help narrow the search, but the manufacturer datasheet should be used to verify every connection. For long-term maintenance, request condition, traceability, packaging, and availability information through the quote form.
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推荐产品汇总
工程参考数据： AK4430ET ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | 16-pin TSSOP |
| Brand | Asahi Kasei Microdevices |
| Converter Type | Stereo audio delta-sigma DAC |
| Resolution | 24 bit |
| Maximum Conversion Rate | 192 ksps |
| Digital Interface | I2S |
| Supply Voltage | 3 V to 3.6 V single supply |
| Integrated Output | 2 Vrms buffered stereo output |
| Signal-to-Noise Ratio | 104 dB typical |
| Operating Temperature | -20 °C to +85 °C |
设计说明
Do not treat a converter with matching resolution and sample rate as a drop-in substitute. Compatibility must include the 16-lead TSSOP footprint, pin-by-pin signal assignments, I2S clocking, logic levels, 3 V to 3.6 V supply range, and buffered analog-output architecture. The AK4430ET is obsolete, so a functional alternative should be treated as a redesign until the complete schematic comparison has been completed.
Follow the manufacturer datasheet’s recommended application circuit for input, output, and bypass capacitors. Place each decoupling component directly beside its associated power pin, keep the analog output routing short, and maintain a controlled ground return for the charge-pump and output-buffer sections. Review the complete pin-description table before assigning tracks because replacing an assumed capacitor connection with the wrong pin can impair operation or damage the converter.
The I2S and clock lines should be routed away from the analog output and charge-pump areas, with series damping considered when the digital source or board traces create edge ringing. Confirm master-clock, slave-clock, and data-line timing at the maximum intended sample rate. The 192 ksps capability is useful only when the upstream processor supplies valid timing and the full system clocking chain remains stable.
Design the 3.3 V supply to remain within the specified 3 V to 3.6 V operating range at the device pins, including startup and load transients. Use the datasheet’s recommended bypass network and account for the charge pump’s internal switching behavior when evaluating power-supply noise. Estimated current consumption cannot be calculated without the maximum-load operating mode, so consult the manufacturer’s electrical-characteristics table before sizing the regulator.
合规信息
RoHS-compliant status is identified in the AK4430ET product listing. The device is listed as obsolete and is not identified as an automotive-qualified product.