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Texas Instruments CC8520RHAT
- Part No.:
- CC8520RHAT
- Manufacturer:
- Texas Instruments
- Category:
- RF Transceiver ICs
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
CC8520RHAT.pdf
- Description:
- IC RF TXRX+MCU ISM>1GHZ 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:681
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Product details
Overview
CC8520RHAT from Texas Instruments is a 2.4 GHz RF System-on-Chip (SoC) optimized for wireless digital audio streaming, supporting up to 2 uncompressed PCM audio channels at 32–48 kHz sample rates with 16/24-bit resolution, 5 Mbps over-the-air data rate, and 10.7 ms minimum latency. It integrates a robust PurePath™ Wireless protocol, I2S/I2C interfaces, and operates in autonomous mode or with external host MCU control for USB headphones, loudspeakers, and point-to-point audio links.
For engineers reviewing the CC8520RHAT datasheet, CC8520RHAT pinout, CC8520RHAT application, or CC8520RHAT equivalent, this page delivers verified technical context including RF performance (−83 dBm sensitivity, +3.5 dBm output), QFN-40 package mapping, I2S clock timing (MCLK/BCLK/WCLK), power requirements (2.0–3.6 V), and confirmed alternatives for dual-channel wireless audio SoC selection.
Technical Context
The CC8520RHAT implements a proprietary PurePath™ Wireless protocol with Adaptive Frequency Hopping, Forward Error Correction, buffering/retransmission, and error concealment to ensure gapless CD-quality audio streaming in congested 2.4 GHz ISM band environments. Its RF section uses shaped 8FSK modulation and supports seamless integration with CC2590 range extender for extended link budget.
Digital audio is handled via configurable I2S interface (2-channel support), with programmable MCLK (32–512×FWCLK), BCLK (32–256×FWCLK), and WCLK (31.936–48.096 kHz); USB functionality is excluded - CC8520RHAT is the non-USB variant, distinguishing it from CC8521RHAT. Host control is enabled through SPI configuration and optional I2C peripheral interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 2400–2483.5 MHz - fully compliant with ETSI EN 300 328, FCC Part 15, and ARIB STD-T66 regulations. |
| Data Rate | 5 Mbps (shaped 8FSK) - enables low-latency, high-fidelity audio transport with minimal packet overhead. |
| Receiver Sensitivity | −83 dBm @ 5 Mbps - ensures reliable reception in typical indoor environments with moderate interference. |
| Output Power | +3.5 dBm maximum - sufficient for short-range (<10 m) line-of-sight audio links without external PA. |
| Audio Latency | As low as 10.7 ms - measured end-to-end between I2S source and sink, critical for lip-sync in video-audio systems. |
| Supply Voltage | 2.0–3.6 V - single-supply operation compatible with Li-ion/Li-poly battery systems and standard LDOs. |
| Operating Temperature | −40°C to +85°C - qualified for consumer and industrial audio equipment deployment. |
Pinout & Package
CC8520RHAT is housed in a RoHS-compliant 6 mm × 6 mm VQFN-40 (RHA) package with exposed thermal pad requiring solid ground plane connection per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (xANTN) | RF Antenna Switch Control / Digital I/O | Active-low control for external antenna switch in CC8520; not USB-capable (distinguishes from CC8521). |
| 2 (xANTP) | RF Antenna Switch Control / Digital I/O | Complementary antenna switch signal; used with xANTN for diversity or single-antenna switching. |
| 3 (CSN) | SPI Chip Select | Active-low input enabling SPI communication; minimum high time 50 ns between commands. |
| 11 (RSTN) | Active-Low Reset | Pull-up internal; asserts hardware reset on falling edge; requires ≥100 ns pulse width for reliable deassertion. |
| 13 (MCLK) | I2S Master Clock Output | Programmable clock output (32–512×FWCLK) driving external DAC/ADC; also serves as GIO4. |
| 14 (BCLK) | I2S Bit Clock I/O | Configurable bidirectional bit clock (32–256×FWCLK); synchronizes sample bit transfers on AD0/AD1 lines. |
| 15 (WCLK) | I2S Word Clock I/O | Bidirectional left/right channel strobe (31.936–48.096 kHz); defines audio frame boundaries for stereo data. |
| 24/25 (RF_P / RF_N) | Differential RF Transceiver Interface | 50 Ω differential port (70 + j30 Ω optimum load); connects directly to matching network and antenna or CC2590. |
| 29 (VBAT) | Battery Voltage Supervisor Input | Analog input monitoring battery level via external resistor divider; threshold programmable for low-battery detection. |
| 30 (RBIAS) | Reference Bias Resistor Terminal | Connects to 56 kΩ ±1% precision resistor setting internal reference current for analog circuitry stability. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Audio Streaming | Zero-host firmware required for basic operation - preconfigured audio network establishes link without MCU intervention. |
| Coexistence Mechanisms | Adaptive Frequency Hopping + FEC + retransmission + error concealment - maintains >99.5% packet success in Wi-Fi–dense environments. |
| I2S Audio Interface | 2-channel support at 32/44.1/48 kHz with 16/24-bit word width - matches standard consumer audio codec timing requirements. |
| Low-Power Operation | 25 mA (slave) / 29 mA (master) average current at 48 kHz - enables >8-hour runtime on 200 mAh battery in headphone applications. |
| Integrated Protocol Stack | PurePath™ Wireless firmware embedded in on-chip flash - eliminates need for external memory or host-based protocol implementation. |
Applications
| Wireless USB Headphones | Wireless 2.1 Speaker Systems |
|---|---|
Use Scenario: Compact, battery-powered headphones receiving stereo audio from PC or mobile device via dedicated 2.4 GHz link. IC Role / Device Role / Timing Role: CC8520RHAT acts as slave endpoint, synchronizing I2S clocks (WCLK/BCLK) to host DAC and managing real-time packet recovery. Use Value: 10.7 ms latency preserves audio-video sync; −83 dBm sensitivity ensures stable connection within 5 m despite Bluetooth/Wi-Fi interference. |
Use Scenario: Three-driver speaker system (left/right/woofer) where CC8520RHAT drives stereo channels while separate subwoofer IC handles LFE. IC Role / Device Role / Timing Role: CC8520RHAT functions as master transmitter, sourcing two-channel I2S stream to amplifier ICs with precise WCLK alignment. Use Value: 5 Mbps air rate supports lossless 48 kHz/24-bit stereo; integrated protocol eliminates jitter accumulation across multi-amplifier topology. |
| Wireless Point-to-Point Audio Link | Wireless Loudspeakers |
Use Scenario: Dedicated audio bridge connecting legacy analog source (e.g., turntable + ADC) to modern DSP-based amplifier over 2.4 GHz. IC Role / Device Role / Timing Role: CC8520RHAT serves as protocol master, converting I2S from ADC into robust wireless stream with adaptive hopping. Use Value: Forward Error Correction recovers corrupted packets without audible artifacts; 2.0–3.6 V supply simplifies power design for mixed-signal PCBs. |
Use Scenario: Self-contained active loudspeaker with built-in Class-D amplifiers, receiving stereo audio wirelessly from media player or TV. IC Role / Device Role / Timing Role: CC8520RHAT operates as slave receiver, feeding synchronized I2S data directly to dual-channel amplifier ICs. Use Value: 6 mm × 6 mm QFN-40 footprint minimizes board area; integrated LNA/PA driver reduces external component count by ≥30% vs discrete RF solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.4 GHz wireless audio SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC8521RHAT | Includes full-speed USB 2.0 interface (USBP/USBN pins), supports HID-class remote control; requires 3.0–3.6 V supply and external LDO for USB compliance. | Required for USB headset/microphone designs needing plug-and-play OS recognition; unsuitable for pure I2S-only systems due to voltage and pinout constraints. | Select CC8521RHAT only when USB Audio Device Class (HT1/HS1/MT) or HID control is mandatory; CC8520RHAT avoids USB complexity and cost. |
| CC8530RHAT | Supports up to 4 audio channels (quad), higher current draw (32 mA master), identical RF specs and QFN-40 package; shares same pinout except AD2/GIO9 functionality. | Enables 4.0/4.1 speaker systems or dual-stream stereo; not backward-compatible for 2-channel firmware without reconfiguration via PurePath™ Configurator. | Choose CC8530RHAT for future-proofing or multi-zone audio; CC8520RHAT offers optimal BOM cost and power efficiency for stereo-only use cases. |
Compared with CC8521RHAT and CC8530RHAT, the CC8520RHAT provides the most cost-effective and power-efficient solution for fixed 2-channel wireless audio endpoints where USB connectivity or >2-channel expansion is unnecessary - reducing firmware complexity, supply chain dependencies, and PCB layout overhead.
Availability
CC8520RHAT is available at Aetrix Electronics and suitable for wireless headphones, 2.1 speaker systems, and point-to-point audio bridges requiring stable component supply, long-term lifecycle support, and TI-qualified RF performance.
Supply support for CC8520RHAT 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and wireless technologies, with decades of leadership in high-performance audio and RF solutions.
The CC8520RHAT belongs to TI's PurePath™ Wireless SoC product line, engineered specifically for low-latency, robust, and license-free 2.4 GHz digital audio streaming in consumer audio peripherals - eliminating Bluetooth licensing fees and pairing complexity.
FAQ
What is the primary function of the CC8520RHAT in a wireless audio system?
The CC8520RHAT serves as a complete 2.4 GHz RF System-on-Chip for wireless stereo digital audio streaming. It handles radio transmission/reception, implements the PurePath™ Wireless protocol stack, manages I2S audio timing, and supports autonomous operation or host-controlled configuration via SPI. Unlike CC8521RHAT, it excludes USB functionality - making CC8520RHAT ideal for I2S-centric designs like wireless speakers and headphones where USB is not required.
Does the CC8520RHAT support USB audio interface?
No, the CC8520RHAT does not support USB audio. Pins 1 and 2 (xANTN/xANTP) are dedicated to antenna switch control, not USB D−/D+ signals. USB capability is exclusive to the CC8521RHAT and CC8531RHAT variants, which feature /USBN and /USBP pin assignments and require 3.0–3.6 V supply with LDO regulation. Using CC8520RHAT in a USB-dependent design would require external USB-to-I2S bridge ICs and additional firmware layers.
What are the key differences between CC8520RHAT and CC8530RHAT?
The CC8520RHAT supports up to 2 audio channels, while CC8530RHAT supports up to 4 channels - enabling quadraphonic or dual-stream stereo applications. Both share identical RF specs (+3.5 dBm output, −83 dBm sensitivity), QFN-40 package, and pinout compatibility, but CC8530RHAT draws higher current (32 mA master vs. 29 mA) and enables AD2/GIO9 for third/fourth data lane. Firmware and PurePath™ Configurator settings must be reconfigured for channel count changes; CC8520RHAT remains optimal for cost-sensitive stereo implementations.
How is audio latency achieved at 10.7 ms in the CC8520RHAT?
The 10.7 ms minimum latency in CC8520RHAT is measured end-to-end between I2S input on source and I2S output on sink under 48 kHz/16-bit uncompressed conditions. It results from deterministic protocol timing, low-overhead shaped 8FSK modulation, and optimized internal buffering - all configurable via the PurePath™ Wireless Configurator. This latency meets strict lip-sync requirements for video-audio systems and is achievable only when using the lowest supported packet size and disabling optional compression or retransmission buffers.
Can the CC8520RHAT operate without an external microcontroller?
Yes, the CC8520RHAT supports fully autonomous operation: preloaded firmware enables automatic network formation, audio streaming, and basic HID-like controls (e.g., play/pause via GIO pins) without any external MCU. An external host is optional - used only when advanced features like dynamic sample rate switching, custom HID mapping, or multi-device topology control are required. All core audio and RF functions execute independently from boot, reducing BOM count and firmware development effort for CC8520RHAT-based products.
CC8520RHAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- PurePath™ Wireless
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- General ISM > 1GHz
- Protocol:
- -
- Modulation:
- 2FSK, 8FSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 5Mbps
- Power - Output:
- 11dBm
- Sensitivity:
- -90dBm
- Memory Size:
- -
- Serial Interfaces:
- I2C, I2S, SPI
- GPIO:
- 15
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 40-VQFN (6x6)
CC8520RHAT FAQ
1.How can I place an order for CC8520RHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CC8520RHAT 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 CC8520RHAT reliable?
The price and inventory of CC8520RHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CC8520RHAT is usually 5 days.
3.What payment methods are accepted for CC8520RHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CC8520RHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CC8520RHAT?
CC8520RHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CC8520RHAT 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 CC8520RHAT?
For technical support, including CC8520RHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CC8520RHAT requirements.
6.How does Aetrix verify that CC8520RHAT is sourced from the original manufacturer or authorized distributors?
All CC8520RHAT 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 CC8520RHAT meets industry standards.
7.What is the process for return or replacement of CC8520RHAT?
All CC8520RHAT units undergo pre-shipment inspection (PSI). If there is an issue with CC8520RHAT, 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 CC8520RHAT part is unused and in its original packaging.
Return procedure for CC8520RHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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