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HomeProductsIntegrated Circuits (ICs)Interface - Encoders, Decoders, ConvertersBU94604KV-E2
BU94604KV-E2 Image
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BU94604KV-E2 - Rohm Semiconductor

Manufacturer Part Number
BU94604KV-E2
Manufacturer
LAPIS Technology
Allelco Part Number
32D-BU94604KV-E2
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
17,540 pcs available, New & Original
Parts Description
IC DECODER AAC WMA MP3 64-VQFP
Package
64-VQFP (12x12)
Data sheet
BU94604KV-E2.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 17540
  • Unit Price: $25.473
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $25.473 $25.47
200+ $10.165 $2,033.00
500+ $9.825 $4,912.50
1000+ $9.657 $9,657.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BU94604KV-E2 Tech Specifications
Rohm Semiconductor - BU94604KV-E2 technical specifications, attributes, parameters and parts with similar specifications to Rohm Semiconductor - BU94604KV-E2

Product Attribute Attribute Value
Manufacturer LAPIS Technology
Voltage - Supply, Digital -
Voltage - Supply, Analog -
Type -
Supplier Device Package 64-VQFP (12x12)
Series -
Product Attribute Attribute Value
Package / Case 64-LQFP
Package Tape & Reel (TR)
Mounting Type Surface Mount
Base Product Number BU94604
Applications -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

BU94604KV-E2 Image
BU94604KV-E2 (1)

Manufacturer Part Number

BU94604KV-E2

Manufacturer

rohm-semi

Introduction

The BU94604KV-E2 is a high-performance interface encoder-decoder chip designed for a variety of applications. It provides flexible and versatile functionality, allowing seamless integration into various electronic systems.

Product Features and Performance

Advanced encoder-decoder capabilities for efficient data transmission and reception

Supports multiple communication protocols and interfaces

High-speed operation with low power consumption

Robust design for reliable and stable performance

Configurable settings to adapt to diverse application requirements

Product Advantages

Versatile functionality to address a wide range of applications

Optimized for energy-efficient operation

Reliable and durable performance for long-term use

Ease of integration into various electronic systems

Key Reasons to Choose This Product

Comprehensive feature set to meet diverse application needs

Proven reliability and stability for dependable operation

Energy-efficient design for cost-effective and environmentally-friendly solutions

Seamless integration into a variety of electronic systems

Quality and Safety Features

Rigorous quality control and testing procedures

Compliance with industry safety standards and regulations

Compatibility

Compatible with a variety of communication protocols and interface requirements

Application Areas

Suitable for a wide range of applications, including industrial automation, consumer electronics, and communication systems

Product Lifecycle

["The BU94604KV-E2 is an obsolete product, meaning it is no longer in active production.","There may be equivalent or alternative models available from the manufacturer or other industry providers. Customers are advised to contact our website's sales team for more information on available options and potential replacements."]

Frequently Asked Questions(FAQ)

How does the BU94604KV-E2 support real-time audio decoding in compact consumer electronics, and what architectural considerations are implied by its 64-pin VQFP package?
The BU94604KV-E2 integrates dedicated hardware decoders for AAC, WMA, and MP3 formats, enabling efficient real-time processing without requiring a host microcontroller to manage decoding overhead. Its 64-pin VQFP (12x12 mm) package reflects a balance between functional density and thermal dissipation needs typical of portable devices like digital media players or Bluetooth speakers. The surface-mount design allows integration into space-constrained PCBs while maintaining signal integrity through optimized pinout allocation for control interfaces and audio output paths.
What are the key differences between using the BU94604KV-E2 versus software-based decoding solutions in terms of power consumption and system complexity?
Unlike software-based decoding that relies on general-purpose processors and consumes significant CPU cycles and memory bandwidth, the BU94604KV-E2 performs hardware-level decoding with lower latency and reduced active power draw. This offloads computational tasks from the main processor, simplifying firmware development and freeing up system resources. In battery-powered applications, this translates to extended operational life, as the dedicated codec operates at fixed power levels regardless of content bitrate—unlike variable-load software implementations that may spike during complex audio frames.
Can the BU94604KV-E2 be used in automotive infotainment systems, and what environmental or reliability factors must be considered given its MSL rating and packaging?
While the BU94604KV-E2 is not inherently automotive-grade, it could potentially be deployed in non-critical infotainment subsystems where commercial temperature ranges suffice. However, its Moisture Sensitivity Level (MSL) of 3 indicates sensitivity to humidity during assembly; therefore, proper storage, baking, and reflow profile management are essential. Automotive designs would require additional qualification beyond datasheet specifications, including extended temperature cycling, vibration testing, and EMC compliance, which this device does not explicitly guarantee.
How does the base product number BU94604 inform variant selection, and what role does the "-E2" suffix play in differentiating the BU94604KV-E2 from other versions?
The base number BU94604 identifies a family of audio decoders supporting multiple compression standards, while the "-E2" suffix typically denotes a specific revision with improved manufacturing yield, updated internal logic, or minor electrical refinements—though exact changes are proprietary. Manufacturers often use such suffixes to indicate process optimizations or enhanced reliability without altering core functionality. Designers should consult application notes or errata sheets to determine whether the "-E2" version offers advantages such as reduced standby current or better noise performance under load.
What interface protocols does the BU94604KV-E2 support for receiving encoded audio data, and how do these impact PCB layout and timing requirements?
The BU94604KV-E2 supports standard serial interfaces such as I²S or SPI, allowing direct connection to microcontrollers or memory devices. These interfaces dictate strict timing constraints during data transfer, necessitating careful trace routing to minimize skew and jitter, especially at higher bitrates. For example, clock signals must maintain impedance control and length matching to avoid misalignment with word clocks. Additionally, pull-up resistors on control lines and proper termination reduce reflections, ensuring stable communication across varying cable lengths in end products.
In a multi-channel audio system, can multiple BU94604KV-E2 units operate simultaneously without interference, and what grounding or isolation strategies are recommended?
Multiple BU94604KV-E2 devices can coexist on the same PCB provided their digital and analog domains are properly segregated. Cross-talk between adjacent ICs can be mitigated by placing ground planes beneath high-speed traces, using guard rings around sensitive analog inputs, and minimizing shared return currents through star-point grounding. Since each decoder generates its own decoded analog output, separate power rails and decoupling capacitors per IC help prevent supply ripple from degrading SNR—particularly important when driving low-impedance headphones or line-level outputs.
How does the supply voltage range of the BU94604KV-E2 affect compatibility with common system power architectures like 3.3V or 5V logic?
Although explicit supply voltages aren’t detailed in the provided parameters, most modern audio codecs like the BU94604KV-E2 are designed for single 3.3V operation to align with prevalent logic families. If interfacing with 5V systems, level-shifting circuitry may be required on control pins, but care must be taken not to exceed absolute maximum ratings. Designers should verify actual operating voltage from full datasheets, as incorrect assumptions could lead to degraded performance or premature failure due to overdrive stress on input stages.
What are the implications of using the BU94604KV-E2 in a RoHS3-compliant design, particularly regarding halogenated flame retardants and material restrictions?
RoHS3 compliance ensures the BU94604KV-E2 meets updated European Union directives restricting hazardous substances, including certain phthalates and improved cadmium limits. This affects not only the semiconductor die and mold compound but also solder finishes and packaging materials. Designers sourcing components must confirm full chain-of-custody documentation to avoid compliance gaps in global markets, especially since some regions impose stricter thresholds than others for electronic waste handling and recycling programs.

Parts with Similar Specifications

The three parts on the right have similar specifications to Rohm Semiconductor BU94604KV-E2

Product Attribute BU94604BKV-E2 BU94601KV-E2 BU94603KV-E2 BU94605KV-E2
Part Number BU94604BKV-E2 BU94601KV-E2 BU94603KV-E2 BU94605KV-E2
Manufacturer Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor
Type - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply, Digital - 1.14V ~ 1.26V 11.4V ~ 16.5V 1.65V ~ 3.6V
Series - - - -
Voltage - Supply, Analog - 3.14V ~ 3.46V 11.4V ~ 16.5V 3V ~ 3.6V
Applications - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

BU94604KV-E2 Datasheet PDF

Download BU94604KV-E2 pdf datasheets and Rohm Semiconductor documentation for BU94604KV-E2 - Rohm Semiconductor.

Datasheets
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
BU94604KV-E2 Image

BU94604KV-E2

Rohm Semiconductor
32D-BU94604KV-E2

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