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Analog Devices Inc./Maxim Integrated MAX2648EBT
- Part No.:
- MAX2648EBT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX2648EBT.pdf
- Description:
- IC AMP LOW-NOISE 5GHZ-6GHZ 6UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,833
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Product details
Overview
The MAX2648EBT from Maxim Integrated is a silicon-germanium (SiGe) low-noise amplifier (LNA) designed for first-stage RF amplification in 5GHz–6GHz wireless systems. It delivers 17dB small-signal gain, 1.8dB noise figure at 5.25GHz, and 0dBm input third-order intercept point (IIP3), operating from a +2.7V to +3.6V single supply while drawing only 12mA. It serves in IEEE 802.11a and HiperLAN2 WLAN front-ends, microwave radios, and 5GHz ISM-band transceivers.
For engineers reviewing the MAX2648EBT datasheet, MAX2648EBT pinout, MAX2648EBT application, or MAX2648EBT equivalent, this page provides verified package mapping, validated RF performance parameters across temperature and supply voltage, confirmed pin functions for UCSP layout, and real-world matching guidance derived from the official evaluation kit design.
Technical Context
The MAX2648EBT is a monolithic SiGe bipolar transistor-based LNA with internally biased input stage and open-collector output requiring external DC biasing via RF choke or quarter-wave line. Its S-parameters are fully characterized from 5GHz to 6GHz, with optimal performance tuned for 5.2GHz (5150–5350MHz) and 5.8GHz (5725–5825MHz) bands.
It operates as a wideband 5100MHz–5850MHz amplifier with matched 50Ω input/output ports requiring external high-Q LC networks. Noise parameters (e.g., FMIN = 1.55dB at 5200MHz) and stability factors (|S12| ≤ –31dB) confirm unconditional stability under typical bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 5100MHz to 5850MHz - fully characterized operating band; optimum matching at 5250MHz and 5800MHz. |
| Small-Signal Gain | 17dB typical at 5250MHz - enables high sensitivity without cascading stages in 5GHz receiver front-ends. |
| Noise Figure | 1.8dB at 5250MHz - meets stringent low-noise requirements for WLAN and microwave radio receivers. |
| IIP3 | 0dBm at 5250MHz - supports robust linearity against adjacent-channel interference in dense 5GHz environments. |
| Supply Current | 12mA at VCC = +3.0V - enables low-power operation in battery-sensitive or thermally constrained modules. |
| Supply Voltage | +2.7V to +3.6V - compatible with standard 3.3V logic rails and tolerant of ±10% regulation variation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor wireless infrastructure applications. |
Pinout & Package
The MAX2648EBT is housed in a 2×3 ultra-chip-scale package (UCSP™) measuring 1.0mm × 1.5mm with 0.5mm bump pitch and six solder bumps on the bottom of the die. The package requires reflow-compatible PCB pad layout per Maxim's Wafer Level Ultra-Chip-Scale Packaging application note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | RFIN | Amplifier input - AC-coupled via DC-blocking capacitor; requires external input matching network for optimal noise/gain. |
| A2, A3, B2 | GND | Ground terminals - must connect to low-inductance ground plane using multiple vias to minimize RF return path impedance. |
| B1 | VCC | Power-supply input - bypassed directly to ground with high-frequency capacitor; long traces require additional low-frequency decoupling. |
| B3 | RFOUT | Amplifier output - open-collector node requiring external DC bias (via RF choke or λ/4 line) and output matching network. |
Key Features
| Feature | Design Value |
|---|---|
| 5GHz–6GHz broadband operation | Validated over 5100–5850MHz with <1.0dB gain variation and <0.5dB NF shift across –40°C to +85°C. |
| Low-noise SiGe process | Enables 1.8dB NF at 5.25GHz - critical for achieving >70dB receiver dynamic range in 802.11a systems. |
| High linearity (0dBm IIP3) | Supports coexistence in crowded 5GHz ISM bands without desensitization from nearby transmitters. |
| Single-supply +2.7V to +3.6V | Eliminates need for negative or precision bias supplies - simplifies power architecture in compact RF modules. |
| Chip-scale UCSP packaging | 1.0mm × 1.5mm footprint enables integration into space-constrained 5GHz front-end modules and mmWave subassemblies. |
Applications
| IEEE 802.11a WLAN Access Point | HiperLAN2 Base Station |
|---|---|
|
Use Scenario: First-stage LNA in dual-band 5GHz access point RF front-end receiving signals from client devices in noisy indoor environments. IC Role / Device Role / Timing Role: Low-noise amplification of weak 5150–5350MHz downlink signals prior to downconversion and demodulation. Use Value: 1.8dB NF preserves signal-to-noise ratio, enabling higher MCS rates and extended coverage range without increasing transmit power. |
Use Scenario: Receiver front-end LNA in ETSI-compliant HiperLAN2 base station operating in 5470–5725MHz band. IC Role / Device Role / Timing Role: High-linearity amplification of uplink signals before filtering and digitization in multi-user MIMO architectures. Use Value: 0dBm IIP3 prevents intermodulation distortion from simultaneous user signals, maintaining channel orthogonality and BER integrity. |
| 5GHz ISM Band Sensor Hub | Microwave Point-to-Point Radio |
|
Use Scenario: Compact wireless sensor node transmitting telemetry over 5.8GHz ISM band in industrial automation settings. IC Role / Device Role / Timing Role: Transmitter driver amplifier boosting IF or direct-RF signals to meet regulatory EIRP limits. Use Value: 17dB gain reduces need for additional PA stages, lowering bill-of-materials cost and board area in battery-powered nodes. |
Use Scenario: Bidirectional RF link in licensed 5.8GHz microwave backhaul system connecting remote cell sites. IC Role / Device Role / Timing Role: LO buffer and receive-path LNA in frequency-agile transceiver supporting adaptive modulation schemes. Use Value: Stable gain (<1.0dB variation over temperature) ensures consistent link budget across seasonal ambient shifts in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QPL9547 | Wider bandwidth (4.5–6.0GHz), lower NF (1.5dB), but higher supply current (22mA) and larger 2×2mm DFN package. | Preferred for new designs prioritizing lowest possible NF in 5.2GHz band; less suitable where board area or power budget is constrained. | Select QPL9547 when NF <1.6dB is mandatory and thermal/power margins allow +10mA overhead. |
| Skyworks SKY65167-396LF | Narrower band (5.15–5.85GHz), slightly higher NF (2.0dB), same UCSP footprint, but requires external bias resistor network. | Better suited for cost-sensitive consumer WLAN clients where moderate NF is acceptable and layout simplicity is secondary. | Choose SKY65167-396LF if matching existing UCSP layout and avoiding RF choke complexity outweighs 0.2dB NF penalty. |
Compared with QPL9547 and SKY65167-396LF, the MAX2648EBT offers the best balance of ultra-small UCSP size, 12mA quiescent current, and 1.8dB NF - making it optimal for space- and power-limited 5GHz front-ends where full 5.2/5.8GHz band coverage is required without redesigning bias or matching networks.
Availability
MAX2648EBT is available at Aetrix Electronics and suitable for IEEE 802.11a access points, HiperLAN2 base stations, and 5GHz ISM-band sensor hubs requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX2648EBT 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for communications, industrial, and computing markets.
The MAX2648EBT belongs to Maxim's RF front-end amplifier product line, engineered specifically for high-gain, low-noise, wideband 5GHz–6GHz operation in wireless LAN and microwave infrastructure applications.
FAQ
What is the recommended input matching network for MAX2648EBT in 5.2GHz applications?
The MAX2648EBT evaluation kit uses a high-Q 22nH inductor (L1) and 100pF capacitor (C1) for input matching in the 5150–5350MHz band. Maxim specifies that low-loss ATC 500-series porcelain 0603 capacitors and wire-wound inductors must be used to avoid degrading the 1.8dB noise figure. Matching must be optimized per board parasitics - no fixed network works universally across PCB stackups.
Does MAX2648EBT require external bias components on the RFIN pin?
No, the MAX2648EBT features an internally biased input stage, so no external DC bias network is needed at RFIN. However, the input must be AC-coupled using a DC-blocking capacitor, and an external matching network is mandatory for optimal noise figure and gain performance across the 5GHz–6GHz band.
Can MAX2648EBT be used as a transmitter driver amplifier, and what is its P1dB?
Yes, the MAX2648EBT is specified for use as a transmitter driver amplifier. Its output 1dB compression point (P1dB) is –0.5dBm at VCC = +3.0V, as shown in the Typical Operating Characteristics (Figure toc04). This makes it suitable for driving subsequent PA stages in low-power 5GHz transmitters but not for direct antenna interface.
What is the thermal resistance (θJA) of the MAX2648EBT UCSP package?
The MAX2648EBT datasheet specifies a maximum continuous power dissipation of 500mW for the 2×3 UCSP package, with derating of 24mW/°C above +70°C. While θJA is not explicitly listed, the derating factor implies θJA ≈ 41.7°C/W (calculated from 1000mW ÷ 24mW/°C), assuming junction-to-ambient path dominates and board layout follows Maxim's recommended via grounding guidelines.
Is MAX2648EBT pin-compatible with other devices in the MAX26xx LNA family?
No, the MAX2648EBT is not pin-compatible with other MAX26xx-series LNAs. Its 2×3 UCSP pinout (RFIN, GND×3, VCC, RFOUT) is unique to this device. For example, MAX2647 uses a different 6-pin SOT-23 pinout and operates at 2.4GHz, while MAX2649 targets 900MHz - neither shares pin assignment, bias scheme, or matching topology with MAX2648EBT.
MAX2648EBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, WLBGA
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP
MAX2648EBT FAQ
1.How can I place an order for MAX2648EBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2648EBT 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 MAX2648EBT reliable?
The price and inventory of MAX2648EBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2648EBT is usually 5 days.
3.What payment methods are accepted for MAX2648EBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2648EBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2648EBT?
MAX2648EBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2648EBT 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 MAX2648EBT?
For technical support, including MAX2648EBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2648EBT requirements.
6.How does Aetrix verify that MAX2648EBT is sourced from the original manufacturer or authorized distributors?
All MAX2648EBT 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 MAX2648EBT meets industry standards.
7.What is the process for return or replacement of MAX2648EBT?
All MAX2648EBT units undergo pre-shipment inspection (PSI). If there is an issue with MAX2648EBT, 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 MAX2648EBT part is unused and in its original packaging.
Return procedure for MAX2648EBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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