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Skyworks Solutions Inc. SKY65344-21
- Part No.:
- SKY65344-21
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- RF Front End (LNA + PA)
- Package:
- 20-LQFN Exposed Pad
- Datasheet:
-
SKY65344-21.pdf
- Description:
- IC FRONT END 2.4-2.5GHZ 20-MCM
- Quantity:
- Payment:
- Shipping:
Inventory:4,814
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Product details
Overview
SKY65344-21 from Skyworks Solutions is a 2.4 GHz transmit/receive front-end module (FEM) with integrated low-noise amplifier, designed for ZigBee® and IEEE 802.15.4 systems. It delivers +20 dBm transmit output power, <2.2 dB receive noise figure, operates from a single 3.3 V supply, and integrates PA, T/R switch, LNA, baluns, and internal RF matching - enabling compact, high-performance 2.4 GHz ISM band radio designs.
For engineers reviewing the SKY65344-21 datasheet, SKY65344-21 pinout, SKY65344-21 application, or SKY65344-21 equivalent, key selection considerations include its 20-pin 6 × 6 mm MCM package, differential TX/RX interfaces (TX_P/TX_N, RX_P/RX_N), programmable power control via SDN/T_R pins, and seamless interoperability with Ember EM250/EM260/EM35x transceivers.
Technical Context
The SKY65344-21 implements a fully integrated bidirectional FEM architecture: its transmit path includes a harmonic-filtered high-efficiency PA delivering +20 dBm at the antenna port, while the receive path integrates a high-isolation T/R switch, LNA with 7–10 dB gain, and differential output balun. All RF ports are internally DC-blocked, eliminating external blocking capacitors.
Control logic uses two digital inputs: SDN (Pin 8) enables/disables the device, and T_R (Pin 20) selects between transmit (SDN=High, T_R=High) and receive (SDN=High, T_R=Low) modes. The bottom ground paddle must be connected to RF ground via thermal vias to ensure stable RF performance and thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 2400–2500 MHz - covers full 2.4 GHz ISM band for ZigBee and IEEE 802.15.4 operation. |
| Transmit Output Power | +19.5 to +20.0 dBm - sufficient for Class 1 ZigBee compliance without external PA stages. |
| Receive Noise Figure | <2.2 dB (typical) - ensures high sensitivity in low-SNR mesh network environments. |
| Supply Voltage | 3.3 V (2.7–3.6 V range) - compatible with standard low-voltage microcontroller and transceiver rails. |
| Operating Current (TX) | 105–130 mA - enables accurate power budgeting for battery-powered sensor nodes. |
| Operating Current (RX) | 7–10 mA - supports ultra-low-power listening modes in duty-cycled applications. |
| Package | 20-pin MCM, 6 × 6 mm - surface-mount footprint optimized for space-constrained IoT PCBs. |
Pinout & Package
SKY65344-21 is housed in a 20-pin, 6 × 6 mm Multi-Chip Module (MCM) surface-mount package (MSL3, 260 °C reflow compatible). The exposed bottom center paddle must be soldered to RF ground with thermal vias for optimal RF performance and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | BIAS1 / BIAS2 | DC bypass voltage inputs for TX and RX paths - require local decoupling to stabilize bias networks. |
| 2, 3 | TX_P / TX_N | Differential transmit input - accepts balanced OQPSK signals from ZigBee transceivers like EM35x. |
| 5, 6 | RX_P / RX_N | Differential receive output - delivers low-noise amplified signal to transceiver baseband inputs. |
| 8 | SDN | Shutdown enable - logic-high activates device; logic-low places SKY65344-21 in low-leakage shutdown mode (<10 µA). |
| 13 | ANT | Single-ended antenna port - connects directly to PCB trace or chip antenna with no external matching required. |
| 17, 9 | TX_VCC / RX_VCC | Separate 3.3 V supplies for TX and RX sections - allows independent power sequencing and noise isolation. |
| 20 | T_R | Transmit/receive mode control - high = TX, low = RX; used with SDN to configure three operational states. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PA + LNA + T/R Switch | Reduces bill-of-materials count by eliminating discrete amplifiers, switches, and matching networks. |
| Differential I/O Interfaces | Enables direct connection to Ember EM250/EM260/EM35x transceivers without external baluns or AC coupling. |
| Internal RF Matching | Eliminates need for external impedance-matching components on all RF ports - simplifies layout and improves yield. |
| Programmable Transmit Power | Supports dynamic output adjustment via input drive level - avoids need for external attenuators or DAC-controlled bias. |
| All-RF-Ports DC Blocked | Removes requirement for external DC-blocking capacitors - saves board area and reduces insertion loss. |
Applications
| ZigBee® Sensor Node | IEEE 802.15.4 Smart Home Hub |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 30 seconds in a mesh network. IC Role / Device Role / Timing Role: Front-end signal conditioning and amplification for 2.4 GHz OQPSK transmission and reception. Use Value: +20 dBm output extends link range; 7–10 mA RX current enables multi-year battery life in listen-before-talk protocols. |
Use Scenario: Central hub coordinating up to 50 end devices using concurrent receive and scheduled transmit bursts. IC Role / Device Role / Timing Role: Bidirectional RF interface managing antenna switching, PA enable timing, and LNA activation per packet. Use Value: High T/R switch isolation prevents TX leakage into RX path during simultaneous channel monitoring and beacon transmission. |
| ZigBee Lighting Control | Industrial Wireless Sensor Network |
|
Use Scenario: DALI-to-ZigBee gateway controlling LED drivers with real-time dimming commands and status reporting. IC Role / Device Role / Timing Role: Low-latency RF front-end supporting sub-10 ms command-response cycles over 2.4 GHz ISM band. Use Value: Fast SDN/T_R control logic enables <1 µs mode transitions - critical for time-sensitive lighting synchronization. |
Use Scenario: Ruggedized environmental monitor deployed in factory settings with metal enclosures and EMI exposure. IC Role / Device Role / Timing Role: Robust RF interface maintaining link integrity under VSWR up to 10:1 and ambient temperatures from –40 °C to +85 °C. Use Value: Ruggedness specification ensures no permanent degradation or parasitic oscillation even under antenna mismatch conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.4 GHz FEM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si2401-A-GM (Silicon Labs) | Lower TX output (+17 dBm), higher RX NF (3.5 dB), same 6 × 6 mm QFN but 16-pin; no differential I/O. | Requires external baluns and matching; suited for cost-sensitive, lower-range applications. | Select when system-level BOM cost outweighs RF performance and layout simplicity. |
| QPF4206 (Qorvo) | Higher TX power (+22 dBm), wider frequency coverage (2.4–2.5 GHz + 5 GHz), 24-pin 6 × 6 mm package; requires dual supply. | Designed for dual-band Wi-Fi/ZigBee coexistence; larger pin count increases routing complexity. | Select when future 5 GHz expansion or higher output headroom is required beyond ZigBee specs. |
Compared with Si2401-A-GM and QPF4206, the SKY65344-21 provides optimal balance of differential interface compatibility, +20 dBm output, and <2.2 dB NF specifically tuned for Ember-based ZigBee systems - reducing design risk and validation effort in certified mesh deployments.
Availability
SKY65344-21 is available at Aetrix Electronics and suitable for ZigBee sensor nodes, IEEE 802.15.4 smart home hubs, and industrial wireless sensor networks requiring stable component supply, consistent MSL3 handling, and long-term production continuity.
Supply support for SKY65344-21 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
Skyworks Solutions is a global leader in high-reliability analog and mixed-signal semiconductors for wireless infrastructure, mobile, automotive, and IoT applications.
The SKY65344-21 belongs to Skyworks' ZigBee-optimized FEM product line, engineered to simplify RF front-end design for low-power, standards-compliant 2.4 GHz mesh networking solutions.
FAQ
What is the operating frequency range of the SKY65344-21?
The SKY65344-21 operates across the full 2400–2500 MHz band, covering the entire 2.4 GHz ISM spectrum used by ZigBee, IEEE 802.15.4, and proprietary 2.4 GHz radios. Its internal matching and filtering are optimized for this range, with guaranteed performance including return loss ≥10 dB at all RF ports within this band.
Does the SKY65344-21 require external RF matching components?
No, the SKY65344-21 includes internal RF matching circuits on all ports - TX_P/TX_N, RX_P/RX_N, and ANT - eliminating the need for external matching networks. This reduces PCB area, assembly steps, and tuning variability, making it ideal for high-volume IoT manufacturing where consistency and yield are critical.
How does the SKY65344-21 interface with Ember EM35x transceivers?
The SKY65344-21 interfaces directly with Ember EM35x transceivers via its differential TX_P/TX_N and RX_P/RX_N ports, requiring no external baluns or level-shifting. Its 3.3 V supply compatibility, SDN/T_R control logic, and timing characteristics align precisely with EM35x reference designs - validated in the SKY65344-21-EVB and EM35X_SKY65344 reference platform.
What is the shutdown current consumption of the SKY65344-21?
When SDN is driven low, the SKY65344-21 enters shutdown mode with leakage current of 4–10 µA at 3.3 V supply and 25 °C. This ultra-low standby current supports energy harvesting and battery-operated applications where multi-year operation is required between maintenance cycles.
Is the SKY65344-21 compatible with lead-free reflow processes?
Yes, the SKY65344-21 is rated for MSL3 per JEDEC J-STD-020 and qualified for both leaded and lead-free solder reflow up to 260 °C peak temperature. Its packaging and internal die attach are engineered to withstand standard Pb-free thermal profiles without delamination or performance degradation.
SKY65344-21 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- 802.15.4, Zigbee®
- Frequency:
- 2.4GHz ~ 2.5GHz
- Features:
- SPDT
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-MCM (6x6)
SKY65344-21 FAQ
1.How can I place an order for SKY65344-21 through Aetrix?
Please submit a Request for Quotation (RFQ) for SKY65344-21 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 SKY65344-21 reliable?
The price and inventory of SKY65344-21 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SKY65344-21 is usually 5 days.
3.What payment methods are accepted for SKY65344-21?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SKY65344-21 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SKY65344-21?
SKY65344-21 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SKY65344-21 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 SKY65344-21?
For technical support, including SKY65344-21 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SKY65344-21 requirements.
6.How does Aetrix verify that SKY65344-21 is sourced from the original manufacturer or authorized distributors?
All SKY65344-21 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 SKY65344-21 meets industry standards.
7.What is the process for return or replacement of SKY65344-21?
All SKY65344-21 units undergo pre-shipment inspection (PSI). If there is an issue with SKY65344-21, 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 SKY65344-21 part is unused and in its original packaging.
Return procedure for SKY65344-21:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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