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Analog Devices Inc. HMC288MS8ETR
- Part No.:
- HMC288MS8ETR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Attenuators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
HMC288MS8ETR.pdf
- Description:
- IC ATTENUATOR 0.7-3.7GHZ 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,791
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Product details
Overview
HMC288MS8ETR from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC 3-bit digital RF attenuator in MSOP-8 package, operating from 0.7 to 3.7 GHz with 2 dB LSB steps (2/4/8 dB), ±0.3 dB typical attenuation accuracy, and <1.8 dB insertion loss across band. It serves as a precision signal-level control device in RF front-ends for wireless infrastructure.
For engineers reviewing the HMC288MS8ETR datasheet, HMC288MS8ETR pinout, HMC288MS8ETR application, or HMC288MS8ETR equivalent, key selection criteria include broadband frequency coverage, monotonic 3-bit control with low bit error, high IIP3 (+51 dBm @ 5 V), minimal DC power consumption (<50 µA per control line), and MSOP-8 footprint compatibility with RF PCB layout best practices.
Technical Context
The HMC288MS8ETR implements a monolithic GaAs-based 3-bit switched-attenuator architecture with independent positive-voltage-controlled bits (V1/V2/V3), each toggling between 0 V and +3–+5 V to select 2/4/8 dB states. All RF paths are internally matched to 50 Ω with integrated DC blocking requirements on RF1 and RF2.
It operates over –40 °C to +85 °C with single-supply bias (Vdd = +3 to +5 V via external 5 kΩ resistor), delivers <600 ns switching time, and maintains >9 dB return loss across full band in all attenuation states - enabling stable gain control in wideband transceivers without recalibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 0.7–3.7 GHz - supports cellular, PCS, ISM, and WLL bands without re-tuning |
| Attenuation Range & Steps | 0–14 dB in 2 dB LSB increments (2/4/8 dB bits) - enables fine-grained RF power leveling |
| Insertion Loss | 1.0–2.3 dB (freq.-dependent) - low baseline loss preserves system noise figure |
| Attenuation Accuracy | ±0.3 dB + 3–4% of setting - ensures predictable signal reduction across temperature/voltage |
| IIP3 | +51 dBm @ 5 V - high linearity prevents intermodulation distortion in multi-tone systems |
| Control Current | <50 µA per bit - ultra-low DC loading simplifies logic interface design |
| Switching Time | 560–600 ns - supports fast AGC and TDD timing in modern radios |
Pinout & Package
Package: MSOP-8 (Mini Small Outline Package), 3.0 × 3.0 × 0.87 mm, RoHS-compliant matte tin finish, MSL1 rating, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF1 | Input RF port - requires external DC-blocking capacitor (100–300 pF) |
| 2 | V1 (Bit 0) | 2 dB LSB control input - high = enabled, low = disabled, 0/+3–5 V logic |
| 3 | V2 (Bit 1) | 4 dB control input - same voltage and current specs as V1 |
| 4 | V3 (Bit 2) | 8 dB MSB control input - toggles highest attenuation step |
| 5 | Vdd | Positive supply input - connected via external 5 kΩ resistor to +3–+5 V |
| 6 | GND | Digital ground - must be tied to PCB RF ground plane with multiple vias |
| 7 | GND | Analog/RF ground - shared ground reference for all internal circuitry |
| 8 | RF2 | Output RF port - also requires external DC-blocking capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Monotonic attenuation | ±0.3 dB bit error typical - guarantees no gain overshoot during state transitions |
| Single-supply operation | +3 to +5 V Vdd only - eliminates need for negative or dual supplies in compact RF modules |
| Broadband return loss | ≥9 dB (0.7–3.7 GHz, all states) - minimizes impedance mismatch-induced ripple |
| High input IP3 | +51 dBm @ 5 V - sustains clean signal integrity in high-power LTE/WiMAX transmitters |
| Miniature footprint | 14.8 mm² MSOP-8 - saves board space vs. larger SOIC or QFN alternatives |
Applications
| Cellular Base Station Transceivers | Point-to-Point Wireless Links |
|---|---|
Use Scenario: Dynamic output power control in 4G/LTE remote radio heads under varying channel conditions. IC Role / Device Role / Timing Role: Precision RF signal attenuation element in closed-loop AGC path, responding to baseband controller commands. Use Value: Enables consistent EIRP compliance across temperature and aging with <0.3 dB accuracy drift. |
Use Scenario: Transmit power adjustment in licensed 2.4/3.5 GHz MMDS/WLL subscriber units. IC Role / Device Role / Timing Role: Digitally programmable attenuation stage before power amplifier driver, synchronized with link budget management. Use Value: Supports 14 dB dynamic range with monotonic response, eliminating calibration tables in field-deployed units. |
| ISM Band IoT Gateway Front-End | Test & Measurement Signal Generators |
Use Scenario: Programmable gain control in sub-GHz to 2.4 GHz multi-band gateways handling BLE/Zigbee/LoRa coexistence. IC Role / Device Role / Timing Role: Wideband RF attenuator placed between LNA and mixer to prevent ADC saturation during burst-mode reception. Use Value: 0.7–3.7 GHz coverage eliminates need for multiple narrowband parts; low 50 µA/bit control current extends battery life in portable gateways. |
Use Scenario: Calibrated step attenuation in benchtop RF signal sources requiring traceable amplitude accuracy. IC Role / Device Role / Timing Role: Stable, repeatable attenuation block referenced against metrology-grade standards. Use Value: ±0.3 dB typical accuracy and <600 ns settling support automated test sequences with <10 ms per step. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital RF attenuator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC624LP4E | 4-bit, 0.1 dB LSB, 0.1–8 GHz, QFN-24 package, higher cost and complexity | Used where finer resolution and wider bandwidth outweigh size/cost constraints | Select when >14 dB range or sub-1 GHz extension needed; not drop-in due to pin count and package |
| PE43703 | 6-bit, 0.25 dB LSB, 9 kHz–6 GHz, 24-pin QFN, integrated SPI interface | Preferred for microcontroller-driven systems requiring serial configuration and broader LF coverage | Choose for software-configurable designs; requires PCB redesign and firmware integration |
Compared with HMC288MS8ETR, HMC624LP4E offers extended bandwidth and resolution but demands larger layout area and higher BOM cost, while PE43703 adds serial control flexibility at the expense of analog simplicity and MSOP-8 compatibility - making HMC288MS8ETR optimal for cost-sensitive, space-constrained, wideband analog-control RF paths.
Availability
HMC288MS8ETR is available at Aetrix Electronics and suitable for cellular infrastructure, point-to-point wireless links, and ISM-band IoT gateway designs requiring stable component supply, RoHS-compliant packaging, and proven high-volume manufacturability.
Supply support for HMC288MS8ETR 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 integrates its high-frequency RF IC portfolio into ADI's Communications & RF Solutions division.
The HMC288MS8ETR belongs to Hittite's legacy GaAs MMIC digital attenuator family, engineered specifically for broadband wireless infrastructure requiring high linearity, monotonic control, and compact surface-mount implementation.
FAQ
What is the operating voltage range for HMC288MS8ETR control inputs?
HMC288MS8ETR control inputs (V1, V2, V3) operate with logic-high levels of Vdd ± 0.2 V (i.e., +2.8 to +5.2 V when Vdd = +3 to +5 V) and logic-low levels of 0 to +0.2 V. Each input draws ≤50 µA at high state, enabling direct interfacing with standard CMOS or TTL outputs without level-shifting circuitry - a key feature of the HMC288MS8ETR design.
Does HMC288MS8ETR require external DC blocking capacitors?
Yes, HMC288MS8ETR requires external DC blocking capacitors on both RF1 and RF2 ports. The datasheet specifies 100–300 pF values selected based on the lowest operating frequency to ensure minimal insertion loss and proper RF coupling - this is mandatory for correct HMC288MS8ETR functionality and is not optional per application circuit guidelines.
What is the thermal operating range of HMC288MS8ETR?
HMC288MS8ETR is rated for continuous operation from –40 °C to +85 °C ambient temperature. Its GaAs MMIC process and MSOP-8 packaging maintain specified insertion loss, attenuation accuracy, and return loss across this full industrial range - verified in characterization data for HMC288MS8ETR across voltage and temperature corners.
Is HMC288MS8ETR pin-compatible with HMC288MS8?
Yes, HMC288MS8ETR is pin-compatible with HMC288MS8 - both use identical MSOP-8 footprints, pin assignments, and electrical interface specifications. The "E" suffix denotes RoHS-compliant matte tin lead finish and 260 °C reflow rating, whereas HMC288MS8 uses Sn/Pb finish; otherwise, HMC288MS8ETR functions identically in existing layouts.
What is the maximum RF input power rating for HMC288MS8ETR?
HMC288MS8ETR has an absolute maximum RF input power rating of +28 dBm (631 mW) across 0.7–4 GHz. Under normal operation, the 0.1 dB compression point is +25 dBm at 5 V supply and +22 dBm at 3 V - these values define the usable linear range for HMC288MS8ETR in gain-control and signal conditioning applications.
HMC288MS8ETR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Attenuation Value:
- -
- Frequency Range:
- -
- Power (Watts):
- -
- Impedance:
- -
- Grade:
- -
- Qualification:
- -
HMC288MS8ETR FAQ
1.How can I place an order for HMC288MS8ETR through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC288MS8ETR 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 HMC288MS8ETR reliable?
The price and inventory of HMC288MS8ETR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC288MS8ETR is usually 5 days.
3.What payment methods are accepted for HMC288MS8ETR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC288MS8ETR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC288MS8ETR?
HMC288MS8ETR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC288MS8ETR 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 HMC288MS8ETR?
For technical support, including HMC288MS8ETR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC288MS8ETR requirements.
6.How does Aetrix verify that HMC288MS8ETR is sourced from the original manufacturer or authorized distributors?
All HMC288MS8ETR 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 HMC288MS8ETR meets industry standards.
7.What is the process for return or replacement of HMC288MS8ETR?
All HMC288MS8ETR units undergo pre-shipment inspection (PSI). If there is an issue with HMC288MS8ETR, 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 HMC288MS8ETR part is unused and in its original packaging.
Return procedure for HMC288MS8ETR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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