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Analog Devices Inc. 119098-HMC658LP2
- Part No.:
- 119098-HMC658LP2
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
119098-HMC658LP2.pdf
- Description:
- EVAL BOARD HMC658LP2 10G PCB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
HMC658LP2 from Analog Devices (formerly Hittite Microwave) is a 20 dB wideband fixed attenuator IC for RF/microwave signal conditioning in 50 Ω systems. It delivers ±2.0 dB attenuation tolerance over DC–25 GHz, handles +25 dBm CW input power, and maintains ≥7 dB minimum return loss across its full bandwidth - ideal for precision test equipment front-ends and fiber-optic receiver gain control.
For engineers reviewing the HMC658LP2 datasheet, HMC658LP2 pinout, HMC658LP2 application, or HMC658LP2 equivalent, key selection criteria include broadband flatness (±2.0 dB tolerance), thermal stability (0.0004 dB/°C tempco), RF port DC coupling compatibility, and MSL1 RoHS-compliant 2×2 mm SMT package suitability for high-frequency PCB layouts.
Technical Context
This passive 50 Ω matched attenuator uses low-stress injection-molded plastic packaging with 100% matte tin lead finish and requires direct soldering of all ground leads and the exposed paddle to PCB RF ground. Its symmetrical RF1/RF2 ports are DC-coupled and impedance-matched without internal biasing.
The device operates from –40 °C to +85 °C, supports up to +25 dBm continuous-wave RF input, and exhibits Class 1B ESD sensitivity requiring handling per HBM protocols. Absolute maximum DC voltage ratings are 4.8 V (terminated) and 4.9 V (open).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Attenuation Value | 20 dB nominal, ±2.0 dB tolerance over full DC–25 GHz range and operating temperature |
| Frequency Range | DC to 25 GHz - supports baseband through Ka-band applications without roll-off compensation |
| Return Loss (Min) | ≥7 dB across full band - ensures minimal signal reflection in cascaded RF stages |
| Power Handling | +25 dBm CW - enables use in medium-power transmitter output conditioning and receiver protection |
| Tempco | 0.0004 dB/°C - guarantees <0.1 dB drift over full –40 °C to +85 °C operating range |
| Package | 6-lead 2×2 mm SMT (4 mm² footprint) with exposed ground paddle - optimized for RF grounding and thermal dissipation |
Pinout & Package
6-lead 2×2 mm surface-mount package with exposed ground paddle; RoHS-compliant, MSL1 rated, 100% matte Sn finish, max reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 4, 6 | GND | Must be soldered directly to PCB RF ground plane - critical for return loss and thermal performance |
| 2 | RF1 | DC-coupled 50 Ω input port; requires external DC blocking if source has non-zero DC offset |
| 5 | RF2 | DC-coupled 50 Ω output port; requires external DC blocking if load has non-zero DC offset |
Key Features
| Feature | Design Value |
|---|---|
| Wideband flatness | 20 dB attenuation maintained within ±2.0 dB from DC to 25 GHz - eliminates frequency-dependent gain calibration |
| Thermal stability | 0.0004 dB/°C tempco - ensures <0.08 dB total drift across full operating temperature range |
| High-power handling | +25 dBm CW rating - supports use in transmitter output stages and test signal path conditioning |
| RoHS-compliant packaging | MSL1 2×2 mm SMT with 100% matte Sn finish - compatible with standard lead-free reflow profiles |
Applications
| Fiber-Optic Transceiver Front-End | Microwave Radio Link Calibration |
|---|---|
Use Scenario: Attenuating optical receiver TIA output before ADC sampling to prevent saturation in high-dynamic-range digital receivers. IC Role / Device Role / Timing Role: Passive 20 dB signal level setter between analog front-end and digitization stage. Use Value: Maintains 50 Ω match and flat response up to 25 GHz, preserving signal integrity without phase distortion or group delay variation. | Use Scenario: Calibrating transmit/receive path gain in point-to-point 24 GHz backhaul radios during factory alignment. IC Role / Device Role / Timing Role: Precision reference attenuator in automated RF loopback test fixtures. Use Value: ±2.0 dB tolerance and <7 dB return loss ensure measurement repeatability across production units and temperature cycles. |
| Test Equipment Signal Conditioning | Scientific Instrument RF Source Protection |
Use Scenario: Inserting known loss before spectrum analyzer inputs to extend dynamic range and avoid front-end compression. IC Role / Device Role / Timing Role: Fixed-loss element in calibrated signal path of benchtop RF analyzers. Use Value: DC–25 GHz bandwidth and +25 dBm power handling allow use across multiple instrument platforms without band switching. | Use Scenario: Protecting sensitive cryogenic amplifier inputs from accidental overdrive during RF source characterization. IC Role / Device Role / Timing Role: Input-stage guard attenuator in low-noise RF measurement setups. Use Value: 20 dB isolation prevents damage while maintaining VSWR <1.5:1 up to 25 GHz - critical for reflection-sensitive cryo-amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QAT-20W10020 | 20 dB, DC–40 GHz, +33 dBm power rating, 0.0003 dB/°C tempco | Broadband lab instrumentation requiring >25 GHz coverage and higher power margin | Select when extended Ka-band operation or >+25 dBm headroom is required |
| Mini-Circuits VAT-20W2+ | 20 dB, DC–26.5 GHz, ±0.75 dB tolerance, +30 dBm rating, larger 3.2×3.2 mm package | Production test systems prioritizing tighter attenuation accuracy and higher reliability over footprint size | Select when ±0.75 dB tolerance and MIL-STD-202 qualification are mandatory |
Compared with QAT-20W10020 and VAT-20W2+, the HMC658LP2 offers optimal balance of 2×2 mm footprint, ±2.0 dB tolerance, and proven integration in fiber-optic and microwave radio designs - making it preferred where board space and legacy design continuity are critical.
Availability
HMC658LP2 is available at Aetrix Electronics and suitable for fiber-optic transceivers, microwave radio links, and test & measurement equipment requiring stable component supply across industrial and aerospace temperature ranges.
Supply support for HMC658LP2 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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing.
The HMC658LP2 belongs to Analog Devices' wideband passive attenuator product line, engineered for DC–25 GHz RF system calibration, signal level management, and impedance matching in defense, communications, and instrumentation applications.
FAQ
What is the exact attenuation value and tolerance of the HMC658LP2?
The HMC658LP2 provides a nominal 20 dB attenuation with a guaranteed tolerance of ±2.0 dB across its full DC–25 GHz operating bandwidth and over the –40 °C to +85 °C temperature range. This specification is measured in a 50 Ω system and reflects worst-case deviation under all specified conditions.
Does the HMC658LP2 require DC blocking capacitors in circuit?
Yes - the HMC658LP2 RF1 and RF2 ports are DC-coupled and matched to 50 Ω, so external DC blocking capacitors must be used if either the driving source or load presents a non-zero DC potential. Failure to do so may cause bias disruption or unintended current paths.
What is the maximum continuous RF input power rating for the HMC658LP2?
The HMC658LP2 is rated for +25 dBm (316 mW) continuous-wave RF input power. This rating assumes proper thermal management via full soldering of all ground leads and the exposed paddle to a low-impedance PCB ground plane.
Is the HMC658LP2 RoHS-compliant and what is its moisture sensitivity level?
Yes - the HMC658LP2 is RoHS-compliant with 100% matte tin lead finish and carries an MSL1 rating, meaning it can be stored indefinitely at ≤30 °C/60% RH and withstand peak reflow temperatures up to 260 °C without baking.
How should the ground connections be implemented for optimal RF performance of the HMC658LP2?
All four GND pins (1, 3, 4, 6) and the exposed ground paddle must be soldered directly to the PCB's RF ground plane using multiple vias. Per Hittite Application Note guidance, this ensures return loss ≥7 dB and minimizes thermal resistance for reliable +25 dBm operation.
119098-HMC658LP2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- Attenuator
- Frequency:
- 0Hz ~ 25GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC658LP2E
119098-HMC658LP2 FAQ
1.How can I place an order for 119098-HMC658LP2 through Aetrix?
Please submit a Request for Quotation (RFQ) for 119098-HMC658LP2 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 119098-HMC658LP2 reliable?
The price and inventory of 119098-HMC658LP2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 119098-HMC658LP2 is usually 5 days.
3.What payment methods are accepted for 119098-HMC658LP2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 119098-HMC658LP2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 119098-HMC658LP2?
119098-HMC658LP2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 119098-HMC658LP2 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 119098-HMC658LP2?
For technical support, including 119098-HMC658LP2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 119098-HMC658LP2 requirements.
6.How does Aetrix verify that 119098-HMC658LP2 is sourced from the original manufacturer or authorized distributors?
All 119098-HMC658LP2 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 119098-HMC658LP2 meets industry standards.
7.What is the process for return or replacement of 119098-HMC658LP2?
All 119098-HMC658LP2 units undergo pre-shipment inspection (PSI). If there is an issue with 119098-HMC658LP2, 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 119098-HMC658LP2 part is unused and in its original packaging.
Return procedure for 119098-HMC658LP2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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