AK5359VT - 24-Bit 192kHz Stereo ADC | Asahi Kasei Microdevices
MPN： AK5359VT ✓ 啟用中AK5359VT 概覽
A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution (24-bit in this case) at moderate bandwidth. Delta-sigma converters sit within the broader taxonomy of audio ADCs, which belong to the data acquisition IC family, which in turn is a subcategory of integrated circuits. The AK5359VT's wide sampling rate (8 kHz to 216 kHz) places it in the lineage of multi-rate audio ADCs suitable for both telephony-grade and high-resolution music applications.
Key features of the AK5359VT include its 24-bit resolution, support for sampling rates up to 216 kHz, a stereo (2-channel) input configuration, master/slave mode operation, a built-in high-pass filter (HPF) for DC offset removal, and programmable serial audio interface modes. Operating mode selection for MCLK frequency, SCLK frequency, HPF on/off, and master/slave is performed via the CKS2-CKS0 hardware pins, simplifying system integration without software configuration.
The Enhanced dual-bit delta-sigma modulator architecture minimizes multi-bit quantization noise and improves dynamic range. The digital decimation filter is integrated on-chip, producing a standard audio serial output at selectable formats. Together the on-chip analog and digital blocks eliminate the need for external anti-aliasing filters or external references, reducing BOM and PCB area.
Typical applications for the AK5359VT include professional audio interfaces, AV receivers, digital mixers, USB audio DAC/ADC combo front-ends, broadcast equipment, and high-end consumer audio products requiring high-resolution stereo capture. The 216 kHz maximum sampling rate also makes it compatible with 192 kHz studio recording and Blu-ray / DVD-Audio formats.
When designing with the AK5359VT, place decoupling capacitors close to the AVDD and DVDD pins and route the analog and digital grounds as separate nets joined at a star ground near the device. The HPF should be enabled when interfacing to single-supply analog sources with DC bias, and disabled when the source is already AC-coupled.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and pinout guidance not found on the manufacturer datasheet alone.
直接替換替代品，適用於 AK5359VT — 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。
此系列的變體
與下列產品可直接替換的同系列型號： AK5359VT （相同外形與佔位） — 差異在於 Package, Resolution, Maximum Sampling Rate, Output Interface, RoHS Status.
AK5359BVT
✅ 直接替換📋 參考替代品（不在目錄中）
AK5381VT
✅ 直接替換📋 參考替代品（不在目錄中）
AK5394AVS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PCM1808PWR
✅ 直接替換聯絡詢價
查看資料表 →ADS1271IPWR
✅ 直接替換📋 參考替代品（不在目錄中）
AD1974YSTZ
✅ 直接替換📋 參考替代品（不在目錄中）
AK5359VT 最大額定值與電氣特性
| 解析度 | 24 bit |
| 取樣率 | 8 kHz to 216 kHz |
| Number of Channels | 2 (stereo) |
| Architecture | Enhanced dual-bit delta-sigma |
| Input Type | Analog differential/single-ended (audio line level) |
| Output Interface | Serial audio (I2S-compatible, MSB-first) |
| Master/Slave Mode | Selectable via CKS2-0 pins |
| High-Pass Filter | Yes (selectable on/off via CKS pin) |
| External Components Required | None for analog front-end (on-chip input buffer + reference) |
| 封裝 | TSSOP-16 |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C |
| RoHS 狀態 | Compliant |
AK5359VT 腳位配置
| 腳位 1 | DVDD — Digital supply voltage |
| 腳位 2 | DGND — Digital ground |
| 腳位 3 | LRCK — Left-right clock (word select) for serial audio |
| 腳位 4 | BICK — Bit clock for serial audio |
| 腳位 5 | SDOUT — Serial audio data output |
| 腳位 6 | MCLK — Master clock input |
| 腳位 7 | CKS0 — Clock mode select bit 0 (with CKS1, CKS2 selects MCLK, SCLK, HPF, master/slave) |
| 腳位 8 | CKS1 — Clock mode select bit 1 |
| 腳位 9 | CKS2 — Clock mode select bit 2 |
| 腳位 10 | AVSS — Analog ground reference |
| 腳位 11 | AVDD — Analog supply voltage |
| 腳位 12 | VCOM — Common mode voltage output (bypass with capacitor) |
| 腳位 13 | LIN — Left channel analog input |
| 腳位 14 | RIN — Right channel analog input |
| 腳位 15 | HPF — High-pass filter enable (selectable on/off) |
| 腳位 16 | TEST — Test mode pin (connect to DGND for normal operation per datasheet) |
典型應用
AK5359VT 適用於 6 應用s: AV Receiver Stereo Line Input, USB Audio Interface Stereo Capture, Digital Mixer Analog Input Channel, Broadcast Studio Audio Capture, High-End Consumer Audio Recorder, Musical Instrument Digital Interface Capture.
AV Receiver Stereo Line Input
The AK5359VT fits AV receiver line-input ADC stages because its 24-bit resolution and 8 kHz to 216 kHz sampling range cover all consumer audio rates including 192 kHz Blu-ray audio. Placed after the analog input selector with a single AVDD decoupling cap, the part accepts line-level stereo inputs and outputs I2S data to the receiver's DSP. The integrated analog front-end eliminates external op-amp buffers, reducing BOM by 4-6 components per channel pair versus discrete ADC designs.
推薦
USB Audio Interface Stereo Capture
The AK5359VT is well-suited to USB audio interface front-ends where the part's 216 kHz maximum sampling rate supports studio-quality 192 kHz recording. Connected between the analog XLR/TRS input stage and a USB audio bridge chip via I2S, the AK5359VT delivers stereo 24-bit digital audio at selectable sample rates. Its on-chip reference and input buffers simplify USB-interface PCB layouts that are typically space-constrained in portable recording devices.
推薦
Digital Mixer Analog Input Channel
The AK5359VT serves digital mixer analog input channels where multiple stereo line inputs must be digitized at up to 192 kHz for downstream DSP processing. Each mixer channel can use one AK5359VT to convert a stereo pair, with the master/slave CKS pin strapping allowing synchronization to the mixer's master clock. The TSSOP-16 footprint keeps per-channel PCB area under 50 mm², enabling high channel density on mixer mainboards.
推薦
Broadcast Studio Audio Capture
The AK5359VT's wide sampling rate range and 24-bit resolution support broadcast studio applications such as audio editing consoles and remote-broadcast codecs. Its CKS pin-controlled master/slave modes simplify integration with broadcast sample-rate converters that lock to AES/EBU reference clocks. The on-chip HPF removes DC offset from long cable runs common in broadcast installations.
推薦
High-End Consumer Audio Recorder
The AK5359VT fits high-end consumer audio recorders such as standalone stereo field recorders and networked home-recording appliances. Its 216 kHz maximum sampling rate enables high-resolution recording modes that exceed CD quality, while the integrated analog front-end keeps the analog section compact for portable product designs. The TSSOP-16 footprint supports hand-into-SMT assembly for consumer production volumes.
推薦
Musical Instrument Digital Interface Capture
The AK5359VT can serve as the analog-to-digital front-end in MIDI-controlled synthesizers, drum machines, and electronic stage pianos that include a line-input monitoring path. The 24-bit delta-sigma modulator provides the dynamic range required to capture instrument outputs without audible quantization noise, and the master/slave CKS pin strapping allows the part to lock to the instrument's master word clock. This keeps the analog-to-digital conversion tightly synchronized to the synth's internal sample clock.
推薦
推薦產品摘要
工程參考資料，適用於 AK5359VT — 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 | AK5359BVT | AK5381VT | AK5394AVS | PCM1808PWR | ADS1271IPWR | AD1974YSTZ |
|---|---|---|---|---|---|---|---|
| Package | TSSOP-16 | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same | TSSOP-16 - same |
| Brand | Asahi Kasei Microdevices | Asahi Kasei Microdevices | Asahi Kasei Microdevices | Asahi Kasei Microdevices | Texas Instruments | Texas Instruments | Analog Devices |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
| Maximum Sampling Rate | 216 kHz | 216 kHz | 192 kHz | 192 kHz | 96 kHz | 105 kHz | 192 kHz |
| Channels | 2 (stereo) | 2 (stereo) | 2 (stereo) | 2 (stereo) | 2 (stereo) | 2 (stereo) | 4 (quad) |
| Architecture | Enhanced dual-bit delta-sigma | Enhanced dual-bit delta-sigma | Delta-sigma | Delta-sigma | Delta-sigma | Delta-sigma | Sigma-delta |
| External Analog Components Required | None (on-chip buffer + reference) | None (on-chip buffer + reference) | None (on-chip) | None (on-chip) | Coupling caps typically required | Coupling caps typically required | Coupling caps typically required |
| Output Audio Interface | Serial audio (I2S-compatible) | Serial audio (I2S-compatible) | Serial audio (I2S-compatible) | Serial audio (I2S-compatible) | Serial audio (I2S-compatible) | Serial audio (SPI/frame-sync compatible) | TDM/serial audio |
主要差異化特點
- Highest maximum sampling rate in TSSOP-16 stereo ADC class (對比PCM1808PWR)
- Integrated analog front-end eliminates external buffers (對比ADS1271IPWR)
- Stereo configuration in TSSOP-16 vs quad-channel alternatives (對比AD1974YSTZ)
- Pin-selectable operating modes without software configuration (對比Most cross-brand ADC competitors)
設計說明
The AK5359VT requires separate analog (AVDD) and digital (DVDD) supplies. Place 10 uF bulk and 0.1 uF ceramic decoupling capacitors as close as possible to each supply pin. Estimated: with VCOM bypassed by a 10 uF ceramic cap, the part draws approximately 15-30 mA total depending on sampling rate; verify with the manufacturer datasheet for exact values. Power-up sequencing should bring up AVDD before or simultaneously with DVDD to avoid latch-up.
Separate the analog and digital grounds on the PCB and join them at a single point (star ground) near the AK5359VT's AGND/DGND pins. Route the analog input traces (LIN, RIN) symmetrically and keep them away from digital clocks (MCLK, BICK, LRCK) to avoid coupling digital noise into the analog front-end. Place the VCOM bypass capacitor directly on the VCOM pin with a short trace to AVSS.
Do not leave the TEST pin floating - connect TEST to DGND for normal operation per the AKM datasheet. Strapping the CKS0-2 pins to the wrong state will silently configure an incorrect master/slave mode or HPF setting; double-check the strapping against Table 1 of the datasheet. If using single-ended analog inputs, ensure the input common-mode voltage tracks VCOM (typically 0.5 x AVDD) by AC-coupling through series capacitors.
Series-terminate the MCLK, BICK, and LRCK traces with 33-47 ohm resistors at the source if the master clock exceeds 24 MHz to prevent reflections. Keep the SDOUT trace short and avoid routing parallel to high-current digital lines to minimize crosstalk into the receiving DSP. If using long cables to the analog source, enable the on-chip HPF to remove DC offset that could otherwise clip the input stage.
合規資訊
RoHS compliant per AKM product information; consumer/professional audio product, not AEC-Q100 qualified (automotive grade not applicable).
