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Microchip Technology DARR84-APK
- Part No.:
- DARR84-APK
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- -
- Datasheet:
-
DARR84-APK.pdf
- Description:
- IC AUDIO BASEBAND PROC 129TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,882
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Product details
Overview
DARR84-APK from Microchip Technology is a highly-integrated wireless audio processor implementing KleerNet™ technology, operating across tri-band RF (2.4, 5.2, and 5.8 GHz), featuring a 16-bit stereo DAC with integrated headphone amplifier, 16-bit mono ADC with microphone amplifier, bi-directional uncompressed audio support, and <20 ms latency-targeted for wireless gaming headsets and battery-powered soundbars.
For engineers reviewing the DARR84-APK datasheet, DARR84-APK pinout, DARR84-APK application, or DARR84-APK equivalent, key selection considerations include KleerNet™ interoperability, tri-band RF agility, integrated SRC for multi-rate audio, antenna diversity algorithms, and dual-mode power operation (AAA batteries or charging circuit).
Technical Context
The DARR84-APK integrates an 8052 MCU core to execute KleerNet™ networking protocols, with baseband processing supporting antenna diversity algorithms that mitigate multipath fading and coexistence interference from Wi-Fi®, Bluetooth®, and microwave ovens. Its RF transceiver includes diplexers for simultaneous Tx/Rx on shared antennas.
It embeds a sample rate converter (SRC) enabling seamless interface with variable-rate audio sources (e.g., PC, Blu-ray player, TV), and supports point-to-multipoint topology-allowing one transmitter to stream to multiple receivers without re-encoding or latency stacking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Bands | 2.4 GHz, 5.2 GHz, and 5.8 GHz-enables adaptive channel selection to avoid congested bands in dense RF environments. |
| Audio DAC | 16-bit stereo, integrated headphone amplifier-delivers HD audio directly to headphones without external amplification. |
| Audio ADC | 16-bit mono with microphone amplifier-supports voice capture in headsets with low-noise front-end gain control. |
| Latency | <20 ms default-meets Dolby® certification requirements for lip-sync–critical applications like gaming and VOIP. |
| Audio Channels | Up to two uncompressed stereo channels-enables simultaneous bidirectional streaming (e.g., game audio + voice chat). |
| Power Supply | Two AAA batteries or charging circuit-supports portable, low-power operation with runtime optimization. |
| Wireless DNA | Real-time interference mitigation engine-dynamically suppresses noise from Wi-Fi®, Bluetooth®, DECT, and microwave ovens. |
Pinout & Package
Package: 64-pin QFN (9 mm × 9 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core power supply | 3.3 V nominal input for digital and analog blocks; requires local decoupling per layout guidelines. |
| AUDIO_IN_L/R | Analog audio input pair | Accepts line-level stereo input; routed to internal 16-bit ADC with programmable gain. |
| AUDIO_OUT_L/R | Analog audio output pair | Drives headphones directly via integrated Class-AB headphone amplifier (15 mW into 32 Ω). |
| MIC_IN | Microphone input | Single-ended input to 16-bit mono ADC with configurable bias and preamp gain. |
| XTAL_IN/XTAL_OUT | Crystal oscillator interface | Supports 26 MHz fundamental-mode crystal for RF PLL and system clock generation. |
| RX_IQ / TX_IQ | Baseband I/Q interface | Direct connection to RF transceiver; enables full-duplex operation with antenna diversity switching. |
| GPIO[0:7] | General-purpose I/O | Configurable as interrupt sources, status indicators, or control signals for accessory detection or mode selection. |
Key Features
| Feature | Design Value |
|---|---|
| KleerNet™ interoperability | Guarantees plug-and-play connectivity with certified KleerNet™ transmitters and receivers across brands-no proprietary pairing stack required. |
| Tri-band RF agility | Enables automatic band-switching during link establishment or interference events-maintains uninterrupted audio in mixed 2.4/5 GHz environments. |
| Integrated SRC | Eliminates need for external sample rate conversion hardware when interfacing with PCs, TVs, or Blu-ray players running at 44.1 kHz, 48 kHz, or 96 kHz. |
| Antenna diversity algorithms | Uses real-time RSSI and BER monitoring across dual RF paths to select optimal antenna-reduces dropouts in non-line-of-sight use cases. |
| Bi-directional uncompressed audio | Supports simultaneous 16-bit/48 kHz stereo playback and mono voice capture-essential for gaming headset full-duplex operation. |
Applications
| Wireless Gaming Headsets | VOIP Conference Headsets |
|---|---|
Use Scenario: Low-latency, full-duplex audio for competitive PC/console gaming with real-time voice comms. IC Role / Device Role / Timing Role: Wireless audio processor handling synchronized Rx/Tx streams, SRC, and KleerNet™ network management. Use Value: Sub-20 ms end-to-end latency ensures precise lip-sync and zero perceptible delay between game action and audio feedback. | Use Scenario: Office or home-based teleconferencing with noise-resilient wireless audio and battery portability. IC Role / Device Role / Timing Role: Dual-role processor managing microphone input (ADC+mic amp), speaker output (DAC+headphone amp), and interference-aware RF link. Use Value: Wireless DNA technology maintains call clarity near Wi-Fi routers and Bluetooth peripherals without manual channel tuning. |
| Battery-Powered Soundbars | Wireless Surround Speaker Systems |
Use Scenario: Compact, cord-free soundbar powered by AAA batteries for temporary or rental AV setups. IC Role / Device Role / Timing Role: Audio receiver with integrated DAC, headphone amp bypass, and power-optimized RF demodulation. Use Value: Eliminates wall-wart dependency while sustaining HD audio quality and multi-hour runtime via efficient baseband processing. | Use Scenario: Multi-speaker home theater setup where rear/surround speakers connect wirelessly to AV receiver. IC Role / Device Role / Timing Role: KleerNet™ endpoint node supporting point-to-multipoint streaming and antenna diversity for robust placement flexibility. Use Value: Enables speaker placement anywhere-including behind furniture-without signal degradation due to multipath or adjacent-band interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DAV102-APK | Lacks integrated microphone amplifier and mono ADC; no bi-directional audio support-Rx-only device. | Suitable only for wireless speaker/headphone receivers-not for voice-enabled headsets. | Select DARR84-APK when full-duplex operation, voice capture, or KleerNet™-certified headset design is required. |
| DAV103-APK | Includes same DAC/ADC and KleerNet™ core but omits antenna diversity algorithms and uses single-band (2.4 GHz only) RF. | Lower-cost option for simpler environments with minimal RF congestion; not recommended for multi-AP homes or offices. | Choose DARR84-APK where tri-band agility and multipath resilience are mandatory for consistent audio performance. |
Compared with DAV102-APK and DAV103-APK, the DARR84-APK uniquely delivers bi-directional uncompressed audio, tri-band RF adaptability, and antenna diversity-making it the only choice for certified KleerNet™ gaming headsets requiring sub-20 ms latency and voice uplink in interference-prone settings.
Availability
DARR84-APK is available at Aetrix Electronics and suitable for wireless gaming headsets, battery-powered soundbars, and VOIP conference systems requiring stable component supply, long-term lifecycle support, and KleerNet™ interoperability assurance.
Supply support for DARR84-APK 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
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog products, and wireless solutions, with global design centers and manufacturing partnerships.
The DARR84-APK belongs to Microchip's KleerNet™ wireless audio processor family, engineered specifically for high-fidelity, low-latency, multi-brand interoperable audio streaming in consumer entertainment and professional communication devices.
FAQ
What RF bands does the DARR84-APK support, and how does band selection work?
The DARR84-APK supports 2.4 GHz, 5.2 GHz, and 5.8 GHz bands. Band selection is performed automatically during link establishment using Wireless DNA technology, which scans for least-congested channels and dynamically switches bands if interference is detected during operation-ensuring uninterrupted audio without user intervention. This behavior is inherent to the DARR84-APK's baseband firmware and requires no host MCU configuration.
Does the DARR84-APK require an external crystal, and what frequency is specified?
Yes, the DARR84-APK requires a 26 MHz fundamental-mode crystal connected to XTAL_IN/XTAL_OUT pins. This crystal serves as the reference for both the RF PLL and the system clock generator. The DARR84-APK's internal oscillator circuitry is designed exclusively for this frequency; substituting other values will prevent proper RF lock and audio timing synchronization in the DARR84-APK.
Can the DARR84-APK operate in full-duplex mode, and what audio formats does it handle?
Yes, the DARR84-APK supports true full-duplex operation: simultaneous 16-bit/48 kHz stereo playback (via DAC) and 16-bit mono voice capture (via ADC). It handles only uncompressed bit-true audio-no codec compression or transcoding. All audio paths in the DARR84-APK preserve original sample depth and rate, with SRC applied only when bridging mismatched source rates.
Is antenna diversity mandatory for DARR84-APK designs, and how is it implemented?
Antenna diversity is implemented in the DARR84-APK's baseband processor using real-time RSSI and BER evaluation across two RF paths. While not mandatory for basic functionality, omitting dual-antenna layout forfeits the multipath mitigation benefit-resulting in audible dropouts in reflective environments. Reference design DWHS84 validates the dual-antenna implementation for the DARR84-APK.
What power sources are supported by the DARR84-APK, and what are the voltage requirements?
The DARR84-APK supports dual power modes: two AAA alkaline batteries (nominal 3.0 V) or regulated 3.3 V input via charging circuit. Internal LDOs regulate all domains to 1.2 V (core), 1.8 V (analog), and 3.3 V (I/O). Battery operation requires no external regulators-the DARR84-APK includes integrated charge-pump and battery-monitoring circuitry calibrated for the DARR84-APK's power profile.
DARR84-APK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- Wireless Audio
- Core Processor:
- 8052
- Program Memory Type:
- FLASH
- Controller Series:
- -
- RAM Size:
- -
- Interface:
- -
- Number of I/O:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DARR84-APK FAQ
1.How can I place an order for DARR84-APK through Aetrix?
Please submit a Request for Quotation (RFQ) for DARR84-APK 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 DARR84-APK reliable?
The price and inventory of DARR84-APK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DARR84-APK is usually 5 days.
3.What payment methods are accepted for DARR84-APK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DARR84-APK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DARR84-APK?
DARR84-APK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DARR84-APK 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 DARR84-APK?
For technical support, including DARR84-APK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DARR84-APK requirements.
6.How does Aetrix verify that DARR84-APK is sourced from the original manufacturer or authorized distributors?
All DARR84-APK 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 DARR84-APK meets industry standards.
7.What is the process for return or replacement of DARR84-APK?
All DARR84-APK units undergo pre-shipment inspection (PSI). If there is an issue with DARR84-APK, 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 DARR84-APK part is unused and in its original packaging.
Return procedure for DARR84-APK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DARR84-APK Tags
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