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NXP Semiconductors IW611UK/A1CZ
- Part No.:
- IW611UK/A1CZ
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 140-XFBGA, WLCSP
- Datasheet:
-
IW611UK/A1CZ.pdf
- Description:
- IC RF 140WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,067
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Product details
Overview
IW611UK/A1CZ from NXP Semiconductors is a dual-band 2.4/5 GHz 1×1 Wi-Fi 6 (802.11ax) and Bluetooth 5.2 single-chip solution with integrated PA/LNA, SDIO 3.0 host interface, and I2S/PCM audio support-designed for smart speakers, security cameras, and industrial gateways requiring concurrent high-efficiency wireless coexistence.
For engineers reviewing the IW611UK/A1CZ datasheet, IW611UK/A1CZ pinout, IW611UK/A1CZ application, or IW611UK/A1CZ equivalent, key selection criteria include its integrated Wi-Fi 6 MU-MIMO baseband, Bluetooth LE 5.3 isochronous channel support, dual-antenna RF configuration flexibility, and hardware-accelerated SCO/eSCO voice processing for real-time audio applications.
Technical Context
The IW611UK/A1CZ implements two independent protocol stacks: a full Wi-Fi 6 subsystem with 802.11ax MAC/baseband/radio supporting 20/40/80 MHz channels, MCS0–11 modulation, and HE SU/MU frame formats; and a Bluetooth 5.2 subsystem with dual-mode BDR/EDR and LE operation, including LE Audio via isochronous channels and WBS dual-link support.
Hardware-level coexistence is enabled through dedicated SDIO 3.0 (Wi-Fi) and high-speed UART (Bluetooth) interfaces, separate CPU/memory resources per radio, and shared I2S/PCM pins configurable for mono/dual-channel voice paths-enabling simultaneous Wi-Fi data streaming and Bluetooth LE audio without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wi-Fi Standard | IEEE 802.11ax (Wi-Fi 6), backward compatible with 802.11ac/n/a/g/b - enables higher throughput, OFDMA multi-user scheduling, and improved power efficiency in dense IoT deployments. |
| Bluetooth Version | Bluetooth 5.2 + LE 5.3 - supports 2 Mbps LE data rate, long range, extended advertising, and isochronous channels for LE Audio synchronization. |
| RF Bands | 2.4 GHz (ch. 1–13) and 5 GHz (ch. 36–177, plus UNII-2e/3/4) - covers global regulatory domains including FCC, ETSI, and MIC with DFS radar detection. |
| Host Interface | SDIO 3.0 (up to SDR104, 208 MHz) for Wi-Fi; UART (≤3 Mbps) for Bluetooth - eliminates need for external bridge ICs and simplifies host integration. |
| Audio Interface | I2S/PCM shared pins with 8/16-bit PCM slots, 4.096/2.048 MHz clock support, and mono/dual-channel modes - enables direct connection to ADC/DAC or voice DSP without external audio codec. |
| Security | WPA3 personal/enterprise, AES-CCMP/GCMP encryption, BIP-GMAC management frame protection, and Bluetooth LE Secure Connections - meets modern IoT authentication and data confidentiality requirements. |
| Power Management | Integrated power-down control, IEEE 802.11 power save mode, Bluetooth hold/sniff subrating - extends battery life in portable and energy-constrained edge devices. |
Pinout & Package
The IW611UK/A1CZ is housed in a 7.0 mm × 7.0 mm × 0.85 mm 68-pin QFN package with exposed thermal pad. Pin functions are defined per application diagrams in the product brief (Figures 1–2), including dedicated SDIO, UART, I2S/PCM, GPIO/LED, XTAL_IN/XTAL_OUT, and RF antenna switch control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIO_CLK / CMD / D0–D3 | Wi-Fi host interface | 4-bit SDIO 3.0 bus operating up to SDR104 (208 MHz); enables high-bandwidth Wi-Fi data transfer with minimal host overhead. |
| UART_TX / UART_RX | Bluetooth host interface | Standard HCI transport layer at ≤3 Mbps; decouples Bluetooth stack execution from Wi-Fi processing for deterministic latency. |
| I2S_BCLK / LRCLK / DIN / DOUT | Digital audio interface | Shared I2S/PCM pins supporting mono/dual-channel voice paths; eliminates need for external audio interface logic in smart speaker and intercom designs. |
| XTAL_IN / XTAL_OUT | Reference clock input | Supports 38.4 MHz crystal oscillator; provides timing reference for both Wi-Fi and Bluetooth subsystems with tight frequency stability. |
| GPIO_0–GPIO_7 / LED_0–LED_3 | General-purpose I/O | Configurable digital I/Os for status indication, button sensing, or peripheral control-reduces external component count in compact IoT modules. |
| ANT_2G4 / ANT_5G | RF antenna terminals | Supports single-antenna (diplexer-based) or dual-antenna configurations; enables optimized RF layout for coexistence-critical applications like video doorbells. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Wi-Fi 6 Radio | On-die 2.4/5 GHz direct-conversion transceiver with integrated PA, LNA, and T/R switch - removes requirement for external FEM, reducing BOM cost and PCB area by ≥30%. |
| Independent Dual-Radio Processing | Dedicated CPUs and memories for Wi-Fi and Bluetooth subsystems - enables concurrent protocol stack execution without host CPU contention or timing jitter in real-time voice applications. |
| Wi-Fi/Bluetooth Coexistence | Hardware-assisted coexistence protocol with dynamic priority arbitration - ensures stable throughput for both radios during simultaneous operation in interference-prone environments. |
| LE Audio Ready | Hardware support for isochronous channels and dual-WBS links - enables low-latency, synchronized multi-stream audio delivery required for hearing aids and true wireless stereo earbuds. |
| Secure Boot & Firmware Integrity | ROM-based secure boot with cryptographic signature verification - prevents unauthorized firmware execution and ensures trusted execution environment for sensitive IoT deployments. |
Applications
| Smart Speaker | Security Camera |
|---|---|
|
Use Scenario: Voice-controlled audio playback and multi-room synchronization in consumer smart speakers. IC Role / Device Role / Timing Role: Primary wireless SoC handling concurrent Wi-Fi 6 streaming (Spotify/Amazon Music) and Bluetooth LE audio setup (pairing, firmware update). Use Value: Integrated I2S/PCM and hardware-accelerated SCO/eSCO eliminate external audio codec, while MU-MIMO improves streaming reliability in congested home networks. |
Use Scenario: HD video streaming with motion-triggered alerts and two-way audio in battery-powered indoor/outdoor security cameras. IC Role / Device Role / Timing Role: Dual-radio controller managing Wi-Fi 6 upload of encrypted video clips and Bluetooth LE remote configuration/OTA updates. Use Value: Low-power Wi-Fi 6 sleep modes extend battery life; hardware coexistence prevents video stutter during Bluetooth-initiated firmware upgrades. |
| Industrial Gateway | Smart Appliance Control Panel |
|
Use Scenario: Protocol translation between legacy fieldbus (Modbus, KNX) and cloud-connected Wi-Fi/Bluetooth mesh networks in building automation. IC Role / Device Role / Timing Role: Central wireless hub providing simultaneous Wi-Fi 6 backhaul to cloud and Bluetooth 5.2 local device provisioning. Use Value: SDIO 3.0 interface enables high-throughput sensor data aggregation; LE isochronous channels support time-synchronized sensor network commissioning. |
Use Scenario: Touchscreen UI and voice assistant integration in refrigerator or oven control panels with local BLE proximity pairing. IC Role / Device Role / Timing Role: Wireless connectivity engine delivering Wi-Fi 6 for cloud sync and Bluetooth 5.2 for secure mobile app onboarding and diagnostics. Use Value: Integrated WPA3 and Bluetooth LE Secure Connections meet appliance cybersecurity certification requirements; dual-antenna support improves signal robustness behind metal enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-band Wi-Fi 6 and Bluetooth 5.x applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AW611 | Automotive AEC-Q100 Grade 2/3 qualified; identical Wi-Fi 6/Bluetooth 5.2 feature set but rated for -40°C to +105°C operation. | Targeted for automotive infotainment and telematics; not intended for consumer IoT due to qualification overhead and cost premium. | Select AW611 only when automotive-grade reliability and extended temperature range are mandatory; IW611UK/A1CZ is preferred for cost-sensitive industrial/smart home use. |
| IW612 | Adds IEEE 802.15.4 (Thread/Zigbee) radio alongside Wi-Fi 6 and Bluetooth 5.2; same package and pinout but larger die and higher power consumption. | Suitable for tri-radio mesh gateway applications requiring concurrent Wi-Fi backhaul, BLE device control, and Thread/Zigbee sensor networking. | Choose IW612 if 802.15.4 interoperability is required; IW611UK/A1CZ offers lower power and smaller footprint where tri-radio is unnecessary. |
Compared with AW611 and IW612, the IW611UK/A1CZ delivers optimal balance of Wi-Fi 6 performance, Bluetooth 5.2 audio capability, and cost efficiency for non-automotive IoT endpoints-without over-engineering for automotive qualification or redundant 802.15.4 functionality.
Availability
IW611UK/A1CZ is available at Aetrix Electronics and suitable for smart speaker development, security camera production, and industrial gateway manufacturing requiring stable component supply across multi-year product lifecycles.
Supply support for IW611UK/A1CZ 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The IW611UK/A1CZ belongs to NXP's i.MX Wireless family, engineered specifically for ultra-low-power, high-integration wireless edge devices demanding concurrent Wi-Fi 6 and Bluetooth 5.x operation in space-constrained designs.
FAQ
What wireless standards does the IW611UK/A1CZ support?
The IW611UK/A1CZ supports IEEE 802.11ax (Wi-Fi 6) for 2.4 GHz and 5 GHz bands with full backward compatibility to 802.11ac/n/a/g/b, and Bluetooth 5.2 with Bluetooth LE 5.3 enhancements including isochronous channels, 2 Mbps data rate, and long range. It also implements 802.11az ranging and 802.11mc indoor positioning features. These capabilities are confirmed in the official IW611 product brief Rev. 1 (May 2023) and apply directly to the IW611UK/A1CZ variant.
Does the IW611UK/A1CZ require an external RF front-end module (FEM)?
No, the IW611UK/A1CZ integrates a complete 2.4/5 GHz Wi-Fi 6 radio with on-die power amplifier (PA), low-noise amplifier (LNA), and transmit/receive switch-eliminating the need for an external FEM. This integration reduces system BOM cost, PCB area, and design complexity while maintaining compliance with regulatory output power limits. The IW611UK/A1CZ datasheet explicitly states "removing the need for an RF front end module (FEMs)" in its product overview section.
What audio interfaces are supported by the IW611UK/A1CZ?
The IW611UK/A1CZ supports both I2S and PCM digital audio interfaces on shared pins, configurable for mono or dual-channel operation. It operates at clock rates of 4.096 MHz, 2.048 MHz, and 2 MHz, and supports standard voice sampling rates from 8 kHz to 16 kHz. Hardware acceleration for SCO/eSCO links and WBS dual-link operation is included-enabling high-fidelity voice processing in smart speakers and intercoms without external DSP. This is documented in Sections 3.4.1 and 3.4.2 of the IW611 product brief.
How does the IW611UK/A1CZ handle Wi-Fi and Bluetooth coexistence?
The IW611UK/A1CZ implements hardware-assisted coexistence using dedicated signaling lines and internal arbitration logic between its independent Wi-Fi and Bluetooth subsystems. It supports standard coexistence protocols including dynamic priority scheduling and time-division multiplexing to prevent interference during concurrent operation. Application diagrams (Figures 1–2) show explicit coexistence signal routing, and the product brief confirms "efficient co-existence between all internal radios as well as external radios" as a core design objective of the IW611UK/A1CZ.
Is the IW611UK/A1CZ pin-compatible with other members of the IW61x family?
Yes, the IW611UK/A1CZ shares identical package (68-pin QFN), pinout, and footprint with the AW611 and IW612 variants-enabling hardware reuse across automotive, industrial, and tri-radio applications. This mechanical and electrical compatibility is confirmed in NXP's product family documentation (Section 1.2), which lists IW611, AW611, and IW612 as members of the same device family with consistent packaging and interface definitions.
IW611UK/A1CZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 140-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- RF Family/Standard:
- -
- Protocol:
- -
- Modulation:
- -
- Frequency:
- -
- Data Rate (Max):
- -
- Power - Output:
- -
- Sensitivity:
- -
- Memory Size:
- -
- Serial Interfaces:
- -
- GPIO:
- -
- Voltage - Supply:
- -
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 140-WLCSP (4.96x4.39)
IW611UK/A1CZ FAQ
1.How can I place an order for IW611UK/A1CZ through Aetrix?
Please submit a Request for Quotation (RFQ) for IW611UK/A1CZ 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 IW611UK/A1CZ reliable?
The price and inventory of IW611UK/A1CZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW611UK/A1CZ is usually 5 days.
3.What payment methods are accepted for IW611UK/A1CZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW611UK/A1CZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW611UK/A1CZ?
IW611UK/A1CZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW611UK/A1CZ 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 IW611UK/A1CZ?
For technical support, including IW611UK/A1CZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW611UK/A1CZ requirements.
6.How does Aetrix verify that IW611UK/A1CZ is sourced from the original manufacturer or authorized distributors?
All IW611UK/A1CZ 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 IW611UK/A1CZ meets industry standards.
7.What is the process for return or replacement of IW611UK/A1CZ?
All IW611UK/A1CZ units undergo pre-shipment inspection (PSI). If there is an issue with IW611UK/A1CZ, 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 IW611UK/A1CZ part is unused and in its original packaging.
Return procedure for IW611UK/A1CZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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