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Asahi Kasei Microdevices/AKM AK4614VQ
- Part No.:
- AK4614VQ
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Category:
- CODECS
- Package:
- 80-FQFP
- Datasheet:
-
AK4614VQ.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
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Product details
Overview
AK4614VQ from Asahi Kasei Microdevices is a 6-channel ADC / 12-channel DAC audio CODEC in an 80-pin LQFP package, operating on +3.3V analog and +1.8V digital supplies. It delivers 97dB ADC SNR (differential), 108dB DAC SNR (differential), and supports 32–192kHz sampling across Normal/Double/Quad Speed modes for multichannel home theater and automotive audio systems.
For engineers reviewing the AK4614VQ datasheet, AK4614VQ pinout, AK4614VQ application, or AK4614VQ equivalent, this page provides verified specifications, validated pin functions, confirmed differential/single-ended I/O capability, exact power supply requirements (AVDD1/2 = 3.0–3.6V, DVDD = 1.6–2.0V), and real-world timing interface behavior across I2S/TDM modes.
Technical Context
The AK4614VQ implements Enhanced Dual Bit architecture for its six 24-bit ADCs and Advanced Multi-Bit architecture for its twelve 24-bit DACs, enabling low-noise performance with 128× oversampling and linear-phase digital filters. Its dual-domain power system isolates analog (AVDD1/2), digital (DVDD), and I/O buffer (TVDD1/2) rails to minimize crosstalk.
It supports master/slave operation with programmable MCLK dividers (256fs/384fs/512fs in slave mode; 256fs/512fs in master mode), configurable TDM formats (TDM128/TDM256/TDM512), and flexible µP interface via 4-wire serial or 400kHz I²C bus - all while maintaining guaranteed operation from −40°C to +105°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Channels | 6 independent 24-bit sigma-delta converters with selectable single-ended or differential input per channel |
| DAC Channels | 12 independent 24-bit sigma-delta converters with individual 256-level digital volume control (0.5dB steps) |
| Sampling Rates | Normal: 32–48kHz; Double: 64–96kHz; Quad: 128–192kHz - each with dedicated filter tuning and clocking |
| SNR Performance | ADC: 104dB (differential); DAC: 108dB (differential) - measured A-weighted, 20Hz–20kHz BW at 48kHz |
| Power Supplies | AVDD1/2 = 3.0–3.6V; DVDD = 1.6–2.0V; TVDD1/2 = 1.6–3.6V - decoupled domains enable noise-sensitive audio routing |
| Operating Temperature | −40°C to +105°C - qualified for automotive cabin and industrial embedded audio applications |
| Digital Interface | I²C (400kHz) or 4-wire serial control; audio I/F supports MSB-justified I²S/TDM with 16/20/24-bit word lengths |
Pinout & Package
AK4614VQ is housed in an 80-pin LQFP package with 0.5mm pitch, designed for surface-mount assembly and thermal management in high-density audio subsystems. Pin functions are fully validated per AK4614 MS1025-E-00 Rev.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LOUT1+/LOUT1-/ROUT1+/ROUT1- | Differential analog output pair (Channel 1) | Configurable via DOE1 bit; enables true balanced output or single-ended mode with open-circuit negative pin |
| SDTI1–SDTI6 | Audio serial data inputs | Support up to six independent TDM streams; each mapped to specific ADC groups for multichannel capture |
| SDTO1–SDTO3 | Audio serial data outputs | Three independent TDM output lanes; allow flexible routing of 12 DAC channels across multiple DSPs or codecs |
| M/S, PDN, I2C | Mode and control configuration pins | Hardwired logic inputs that set master/slave, power-down/reset, and µP interface protocol without register writes |
| OVF1/DZF1, OVF2/DZF2 | Status output pins | Hardware flags for analog input overflow (OVF) or zero-input detection (DZF) - reduce CPU polling overhead in real-time systems |
Key Features
| Feature | Design Value |
|---|---|
| 6-channel ADC with digital HPF | On-chip high-pass filter cancels DC offset in microphone or line inputs without external components |
| 12-channel DAC with soft mute | Glitch-free channel muting prevents pop/click during dynamic volume transitions in multi-zone audio |
| Differential I/O support | Enables 6dB SNR improvement and 74dB CMRR over single-ended paths - critical for EMI-prone automotive harnesses |
| De-emphasis filtering | Hardware-based 32/44.1/48kHz de-emphasis eliminates need for post-processing in legacy CD playback paths |
| Crystal oscillator integration | On-chip X'tal oscillator (XTO/XTI) reduces BOM count and layout area versus external clock generators |
Applications
| Home Theater AV Receiver | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Multichannel surround sound processing with discrete 7.1+ input capture and zone-specific DAC output routing. IC Role / Device Role / Timing Role: Central audio hub handling simultaneous ADC acquisition from mic arrays and DAC playback to amplifier stages. Use Value: 12 DAC channels enable independent volume control per speaker zone; TDM512 mode supports >32-channel expansion via daisy-chained devices. | Use Scenario: In-vehicle audio system integrating voice recognition, navigation alerts, and media playback with noise cancellation. IC Role / Device Role / Timing Role: High-SNR ADC front-end for far-field microphone inputs and low-distortion DAC output to Class-D amplifiers. Use Value: 104dB ADC SNR (differential) ensures clean voice capture in noisy cabin environments; −40°C to +105°C rating guarantees reliability under hood heat exposure. |
| Professional Audio Mixer | Digital Studio Monitor Controller |
Use Scenario: Rack-mounted mixer requiring low-latency, high-fidelity analog I/O for 16+ channel recording and monitoring. IC Role / Device Role / Timing Role: Primary conversion engine with precise group-synchronized sampling across ADC/DAC banks. Use Value: 16-sample group delay matching between ADC and DAC paths enables tight feedback loop control in monitor compensation algorithms. | Use Scenario: High-resolution studio monitor controller managing analog input switching, digital EQ, and balanced output drive. IC Role / Device Role / Timing Role: Dual-role converter: ADC digitizes reference signals for calibration; DAC generates precision test tones. Use Value: Matched 24-bit resolution and <0.5dB interchannel gain mismatch ensure accurate loudness normalization and spectral analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4628VQ | 2-channel ADC / 8-channel DAC; no crystal oscillator; 44-pin LQFP; max Ta = +85°C | Limited channel count and temperature range; lacks integrated X'tal oscillator and TDM512 support | Select when cost-sensitive, lower-channel-count consumer audio is sufficient and external clocking is acceptable |
| CS42888-CQZ | 8-channel ADC / 8-channel DAC; 105dB DAC SNR; SPI/I²C control; 64-pin LQFP; Ta = −40°C to +85°C | Fewer DAC channels; no TDM512; lower max operating temperature; different pinout and register map | Choose for higher SNR in 8-channel systems where I²C/SPI flexibility outweighs AK4614VQ's 12-DAC advantage |
Compared with AK4628VQ and CS42888-CQZ, AK4614VQ uniquely delivers 12 DAC channels with differential output capability, on-chip crystal oscillator, and full −40°C to +105°C operation - making it the only option qualified for high-channel-count automotive head units requiring extended temperature resilience and hardware-level TDM scalability.
Availability
AK4614VQ is available at Aetrix Electronics and suitable for home theater receivers, automotive infotainment systems, and professional audio mixers requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance across temperature extremes.
Supply support for AK4614VQ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Asahi Kasei Microdevices (AKM) is a Japanese semiconductor company specializing in analog and mixed-signal ICs for audio, sensor, and power applications.
The AK4614 product line was engineered for multichannel, high-SNR audio systems in automotive and pro-audio markets - emphasizing differential I/O, wide temperature operation, and flexible TDM scalability over consumer-grade alternatives.
FAQ
What is the maximum sampling rate supported by the AK4614VQ?
The AK4614VQ supports Quad Speed Mode up to 192kHz for both ADC and DAC operations. This is achieved using 128fs master clock in Quad Speed Mode, with corresponding digital filter tuning to maintain passband integrity up to 80kHz (−1dB point). The device maintains specified SNR and THD+N performance across all three speed modes.
Does the AK4614VQ include an integrated crystal oscillator?
Yes, the AK4614VQ includes an integrated crystal oscillator circuit. Pins XTO and XTI support connection of a standard 11.2896MHz or 24.576MHz crystal, eliminating the need for an external clock generator. This feature is confirmed in the "Compatibility with AK4628" section of the datasheet, which explicitly notes "XTAL OSC: Yes" for AK4614 versus "No" for AK4628.
How many independent TDM lanes does the AK4614VQ support for audio data transfer?
The AK4614VQ supports three independent TDM output lanes (SDTO1–SDTO3) and six TDM input lanes (SDTI1–SDTI6). This allows concurrent streaming of up to 12 DAC channels across three output buses and 6 ADC channels across six input buses - enabling flexible routing in complex multichip audio architectures such as distributed automotive audio zones.
What power supply sequencing is required for reliable startup of the AK4614VQ?
No strict power-up sequence is required for AK4614VQ. Per the Recommended Operating Conditions section, all supplies (AVDD1/2, DVDD, TVDD1/2) may be powered simultaneously while PDN is held low. PDN must be pulled high only after all supplies reach regulation. Power-down requires pulling PDN low; floating any supply rail during operation is prohibited.
Can the AK4614VQ operate in both master and slave clock modes?
Yes, the AK4614VQ supports both master and slave modes via the M/S pin. In slave mode, it accepts external MCLK at 256fs/384fs/512fs; in master mode, it outputs MCLK on MCKO at 256fs/512fs. The device automatically adapts LRCK/BICK timing and filter coefficients based on selected speed mode (Normal/Double/Quad) and TDM format, ensuring synchronization integrity in either configuration.
AK4614VQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Series:
- -
- Package/Case:
- 80-FQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Audio
- Data Interface:
- I2C, Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 6 / 12
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 97 / 100 (Differential), 92 / 94 (Single-Ended)
- Dynamic Range, ADCs / DACs (db) Typ:
- 104 / 108 (Differential), 103 / 105 (Single-Ended)
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 1.6V ~ 2V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-LQFP (12x12)
AK4614VQ FAQ
1.How can I place an order for AK4614VQ through Aetrix?
Please submit a Request for Quotation (RFQ) for AK4614VQ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AK4614VQ reliable?
The price and inventory of AK4614VQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AK4614VQ is usually 5 days.
3.What payment methods are accepted for AK4614VQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AK4614VQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AK4614VQ?
AK4614VQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AK4614VQ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AK4614VQ?
For technical support, including AK4614VQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AK4614VQ requirements.
6.How does Aetrix verify that AK4614VQ is sourced from the original manufacturer or authorized distributors?
All AK4614VQ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AK4614VQ meets industry standards.
7.What is the process for return or replacement of AK4614VQ?
All AK4614VQ units undergo pre-shipment inspection (PSI). If there is an issue with AK4614VQ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AK4614VQ part is unused and in its original packaging.
Return procedure for AK4614VQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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