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Analog Devices Inc. 111317-HMC541LP3
- Part No.:
- 111317-HMC541LP3
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
111317-HMC541LP3.pdf
- Description:
- BOARD EVAL HMC541LP3E
- Quantity:
- Payment:
- Shipping:
Inventory:4,459
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Product details
Overview
111317-HMC541LP3 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC 1-bit digital positive-control RF attenuator with 10 dB attenuation range, DC–5 GHz bandwidth, <1 dB typical insertion loss, ±0.2 dB typical step error, and +50 dBm IIP3. It operates from a single +5 V supply and interfaces via TTL/CMOS-compatible control voltage on pin 14 (V1), serving as a precision signal-level control element in RF front-ends and IF paths.
For engineers reviewing the 111317-HMC541LP3 datasheet, 111317-HMC541LP3 pinout, 111317-HMC541LP3 application, or 111317-HMC541LP3 equivalent, key selection criteria include its broadband DC–5 GHz coverage, low distortion at high input power (+27 dBm P0.1dB), tight attenuation accuracy, exposed-ground paddle thermal performance, and requirement for external AC-ground capacitors on pins 5 and 8.
Technical Context
The 111317-HMC541LP3 implements a single-pole, single-throw GaAs-based switched-attenuator topology with off-chip AC-grounding via external capacitors on ACG1/ACG2 (pins 5 and 8), enabling near-DC operation. Its control logic uses positive-voltage activation (0–0.8 V = 10 dB state; +2.0–+5.0 V = reference insertion-loss state).
It delivers stable RF performance across –40°C to +85°C, with return loss ≥25 dB below 2.5 GHz and ≥15 dB up to 5 GHz on both RF1 and RF2 ports, and exhibits fast switching (tRISE/tFALL ≤20 ns, tON/tOFF ≤23 ns) under TTL/CMOS drive without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Attenuation Range | 10 dB - fixed binary step between two states, enabling coarse but precise RF power adjustment |
| Frequency Range | DC – 5 GHz - supports baseband through microwave bands including ISM, WiMAX, and VSAT |
| Insertion Loss | ≤1.3 dB (typ.) at 2–3.5 GHz - minimizes signal path degradation in cascaded RF stages |
| IIP3 | +50 dBm - ensures linearity in multi-tone environments such as cellular base station receivers |
| Step Accuracy | ±0.2 dB (typ.) - enables predictable gain/loss budgeting in calibrated test and comms systems |
| Supply Voltage | +5 V ±10% - compatible with standard logic rails; draws only 1.5 mA typical current |
| Switching Speed | tON/tOFF ≤23 ns - supports high-speed AGC and TDD timing in modern wireless protocols |
Pinout & Package
111317-HMC541LP3 is housed in a 3×3 mm leadless surface-mount package (LP3) with an exposed metal paddle requiring solder connection to PCB RF ground. Pin layout follows a 4×4 QFN configuration with internal ground symmetry and dedicated RF and control terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd | +5 V DC bias supply input; decoupling required near pin |
| 2, 11 | RF1, RF2 | 50 Ω DC-coupled RF ports; require external blocking capacitors for DC isolation |
| 5, 8 | ACG1, ACG2 | AC ground terminals; must connect to RF ground via external capacitor (e.g., 1000 pF) |
| 14 | V1 | Positive TTL/CMOS control input; 0–0.8 V selects 10 dB state, +2.0–+5.0 V selects reference state |
| 3, 4, 6, 7, 9, 10, 12, 13, 15, 16 | N/C | No-connect pins; must be tied to PCB RF ground for optimal RF shielding and thermal dissipation |
| Package Bottom | Exposed Paddle | Thermal and RF ground interface; mandatory solder connection to maximize power handling and stability |
Key Features
| Feature | Design Value |
|---|---|
| DC–5 GHz Operation | Enabled by external AC-ground capacitors on ACG1/ACG2, supporting baseband and microwave IF/RF routing |
| +50 dBm Input IP3 | Preserves signal integrity in dense-spectrum environments like LTE/WiFi coexistence without intermodulation distortion |
| ±0.2 dB Step Accuracy | Reduces calibration overhead in automated test equipment and closed-loop RF power control systems |
| Single +5 V Supply | Eliminates need for dual-rail or negative supplies, simplifying power architecture in compact RF modules |
| TTL/CMOS-Compatible Control | Direct interfacing with FPGA/GPIO without level shifters, reducing BOM count and layout complexity |
Applications
| Cellular Infrastructure | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Dynamic range control in macrocell and small-cell transceiver front-ends during UL/DL switching. IC Role / Device Role / Timing Role: 1-bit digital attenuator placed between LNA and mixer to manage signal levels and prevent ADC saturation. Use Value: Maintains system SNR over wide input power ranges using only one control line and no additional bias circuitry. |
Use Scenario: Programmable signal attenuation in RF signal generators and vector network analyzer calibration paths. IC Role / Device Role / Timing Role: Precision loss element in automated calibration loops where repeatability and speed are critical. Use Value: Delivers ±0.2 dB step accuracy and ≤23 ns switching to support high-throughput production testing. |
| ISM Band Wireless Systems | Microwave Radio & VSAT |
|
Use Scenario: Output power leveling in 2.4/5.8 GHz ISM transmitters for regulatory compliance and EIRP control. IC Role / Device Role / Timing Role: Final-stage RF attenuator controlled by microcontroller GPIO to adjust transmit power in real time. Use Value: Operates up to 5 GHz with <1.3 dB insertion loss, preserving PA efficiency while meeting spectral mask requirements. |
Use Scenario: Gain stabilization in outdoor point-to-point microwave radios operating at 6–42 GHz (IF section). IC Role / Device Role / Timing Role: IF-path attenuator in heterodyne receiver chains to maintain constant intermediate frequency amplitude. Use Value: DC–5 GHz bandwidth covers common IF frequencies (e.g., 70 MHz, 140 MHz, 750 MHz), enabling reuse across radio platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1-bit digital RF attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC624LP4E | 10 dB range, DC–6 GHz, 3×3 mm LP4 package, requires dual supply (Vdd = +5 V, Vctl = –5 V) | Negative-control interface limits direct replacement in TTL/CMOS systems without level shifting | Select when higher frequency margin (up to 6 GHz) is needed and negative control is acceptable |
| Qorvo QM11025 | 10 dB range, DC–5.5 GHz, 2×2 mm DFN, +3.3 V supply, CMOS-compatible control | Smaller footprint and lower supply voltage, but IIP3 = +44 dBm (6 dB lower than 111317-HMC541LP3) | Select for space-constrained 3.3 V systems where moderate linearity suffices |
Compared with HMC624LP4E and QM11025, the 111317-HMC541LP3 offers superior linearity (+50 dBm IIP3), proven DC–5 GHz stability with minimal external components, and seamless integration into existing +5 V TTL designs-making it optimal for high-fidelity RF infrastructure where distortion and layout simplicity are critical.
Availability
111317-HMC541LP3 is available at Aetrix Electronics and suitable for cellular infrastructure, test equipment, ISM-band wireless systems, and microwave radio applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 111317-HMC541LP3 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
Analog Devices acquired Hittite Microwave in 2014 and maintains its high-frequency RF portfolio, delivering precision analog, RF, and microwave ICs for demanding communications and instrumentation markets.
The 111317-HMC541LP3 belongs to Hittite's legacy GaAs MMIC digital attenuator product line, engineered specifically for broadband RF/IF signal conditioning in infrastructure and test systems where accuracy, speed, and thermal robustness are essential.
FAQ
What is the operating temperature range for the 111317-HMC541LP3?
The 111317-HMC541LP3 is specified for continuous operation from –40°C to +85°C ambient temperature. Its thermal resistance of 68°C/W and exposed paddle design enable reliable performance at full rated RF power within this range, provided the paddle is soldered to a thermally adequate PCB ground plane.
Does the 111317-HMC541LP3 require external components to operate?
Yes-the 111317-HMC541LP3 requires external DC-blocking capacitors on RF1 and RF2 (pins 2 and 11), AC-ground capacitors on ACG1 and ACG2 (pins 5 and 8), and proper decoupling on Vdd (pin 1). Recommended values are 1000 pF for C1–C3 and 330 pF for C4–C5 per the evaluation board design.
Is the 111317-HMC541LP3 pin-compatible with the HMC541LP3E variant?
Yes-the 111317-HMC541LP3 and HMC541LP3E share identical pinout, package dimensions, and electrical specifications. The HMC541LP3E is the RoHS-compliant version with matte tin lead finish and MSL1 rating for 260°C reflow, whereas the 111317-HMC541LP3 uses Sn/Pb finish and 235°C peak reflow.
What is the maximum RF input power the 111317-HMC541LP3 can handle?
The 111317-HMC541LP3 supports +27 dBm RF input power continuously at +85°C ambient. This corresponds to ~0.5 W, enabled by its 0.96 W continuous power dissipation rating and low thermal resistance (68°C/W), assuming proper PCB grounding of the exposed paddle.
How does the control logic of the 111317-HMC541LP3 function?
The 111317-HMC541LP3 uses positive-control logic on pin 14 (V1): a voltage of 0–0.8 V selects the 10 dB attenuation state, while +2.0–+5.0 V selects the reference (low-loss) state. No external pull-up/down resistors are needed, and the input draws only ±5 µA in low state and ~40 µA in high state.
111317-HMC541LP3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- Attenuator
- Frequency:
- 0Hz ~ 5GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC541LP3
111317-HMC541LP3 FAQ
1.How can I place an order for 111317-HMC541LP3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 111317-HMC541LP3 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 111317-HMC541LP3 reliable?
The price and inventory of 111317-HMC541LP3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 111317-HMC541LP3 is usually 5 days.
3.What payment methods are accepted for 111317-HMC541LP3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 111317-HMC541LP3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 111317-HMC541LP3?
111317-HMC541LP3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 111317-HMC541LP3 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 111317-HMC541LP3?
For technical support, including 111317-HMC541LP3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 111317-HMC541LP3 requirements.
6.How does Aetrix verify that 111317-HMC541LP3 is sourced from the original manufacturer or authorized distributors?
All 111317-HMC541LP3 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 111317-HMC541LP3 meets industry standards.
7.What is the process for return or replacement of 111317-HMC541LP3?
All 111317-HMC541LP3 units undergo pre-shipment inspection (PSI). If there is an issue with 111317-HMC541LP3, 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 111317-HMC541LP3 part is unused and in its original packaging.
Return procedure for 111317-HMC541LP3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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