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Analog Devices Inc./Maxim Integrated MAX2470EUT+T
- Part No.:
- MAX2470EUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX2470EUT+T.pdf
- Description:
- IC BUFFER 1 CIRCUIT SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:5,025
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Product details
Overview
MAX2470EUT+T from Maxim Integrated is a single-ended-input, high-reverse-isolation RF buffer amplifier optimized for VCO interface in RF signal chains. It delivers >14dB transducer gain at 200MHz, 64dB reverse isolation, and operates across two selectable frequency bands: 10–500MHz (HI/LO = VCC) or 10–200MHz (HI/LO = GND), consuming only 3.6mA in low-band mode. It is used to drive differential mixers or split signals to PLL and mixer paths in cellular transceivers.
For engineers reviewing the MAX2470EUT+T datasheet, MAX2470EUT+T pinout, MAX2470EUT+T application, or MAX2470EUT+T equivalent, key selection criteria include its dual-band logic-selectable bandwidth, ultra-low supply current in low-frequency mode, differential 50Ω output capability, and suitability as an active balun in ISM-band and PCS mobile radio designs.
Technical Context
The MAX2470EUT+T implements a broadband GaAs-based buffer with internal bias control via the HI/LO pin, enabling dynamic trade-off between bandwidth and power: HI/LO = GND configures the device for 10–200MHz operation at 3.6mA, while HI/LO = VCC enables full 10–500MHz range at 5.5mA. Its high input impedance (>1kΩ real part at 100MHz) minimizes loading on discrete VCOs and crystal oscillators.
It features fully differential outputs capable of driving either a 100Ω differential load (e.g., through a 180° hybrid) or two independent 50Ω single-ended loads - such as separate mixer and PLL inputs - with >45dB output-to-output isolation. Output VSWR remains ≤1.5:1 across its operating band when terminated properly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +2.7V to +5.5V - supports direct integration with 3.3V and 5V RF subsystems without level-shifting. |
| Input Frequency Range | 10–200MHz (HI/LO = GND) or 10–500MHz (HI/LO = VCC) - logic-selectable bandwidth enables flexible reuse across multiple RF bands. |
| Transducer Gain | 14.9dB typical at 200MHz - sufficient to overcome insertion loss in RF front-end splitting networks. |
| Reverse Isolation | 64dB typical at 200MHz - prevents oscillator pulling and maintains VCO phase noise integrity. |
| Supply Current | 3.6mA (low-band) / 5.5mA (full-band) at -5dBm output - enables battery-sensitive portable ISM applications. |
| Noise Figure | 10.2dB typical at 200MHz (HI/LO = VCC) - preserves SNR in receiver LO distribution paths. |
| Output VSWR | ≤1.5:1 (10–500MHz, HI/LO = VCC) - ensures stable power transfer into 50Ω or 100Ω differential loads. |
Pinout & Package
MAX2470EUT+T is housed in a lead-free, RoHS-compliant SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density RF PCB layouts with minimal parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Differential noninverting output | AC-coupled 50Ω broadband output; must not be DC-coupled - connects to one side of 180° hybrid or single-ended load. |
| 2 (GND) | RF ground reference | Low-inductance connection point to PCB ground plane; critical for maintaining reverse isolation and gain flatness. |
| 3 (OUT) | Differential inverting output | AC-coupled complementary 50Ω output; paired with Pin 1 to form balanced drive for mixers or ADC clock inputs. |
| 4 (HI/LO) | Bandwidth select control | Logic-level input (0V or VCC) that reconfigures internal bias for 10–200MHz/3.6mA or 10–500MHz/5.5mA operation. |
| 5 (IN) | Single-ended RF input | High-impedance (>1kΩ) node; accepts AC-coupled VCO output directly or via shunt-L matching for minimal oscillator loading. |
| 6 (VCC) | Positive supply rail | +2.7V to +5.5V analog supply; requires local 100nF + 10pF decoupling adjacent to pin for RF stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-band logic-selectable operation | HI/LO pin toggles between 10–200MHz @ 3.6mA and 10–500MHz @ 5.5mA - enables one BOM item across multiple frequency-tier designs. |
| High reverse isolation (64dB) | Prevents reflected energy from downstream circuits from disturbing VCO frequency stability and phase noise. |
| Differential 50Ω outputs | Supports both 100Ω differential (e.g., IQ modulator LO) and dual 50Ω single-ended (e.g., mixer + PLL) routing without external splitters. |
| Ultra-small SOT23-6 footprint | 2.9mm × 1.6mm area saves space in compact RF modules - compatible with standard pick-and-place equipment. |
| High input impedance | Reduces loading on discrete transistor-based VCOs and ceramic resonator oscillators, preserving Q and tuning range. |
Applications
| Cellular Transceiver LO Distribution | ISM-Band Wireless Sensor Node |
|---|---|
|
Use Scenario: Distributing VCO output to both upconversion mixer and frequency synthesizer PLL in a PCS-band (1850–1990MHz) transceiver. IC Role / Device Role / Timing Role: Single-ended VCO buffer and active balun providing isolated differential drive. Use Value: 64dB reverse isolation prevents PLL reference leakage from degrading VCO phase noise; dual outputs eliminate passive splitter loss. |
Use Scenario: Driving 2.4GHz BLE or Zigbee RFIC from a low-power discrete Colpitts VCO in battery-operated sensor nodes. IC Role / Device Role / Timing Role: Low-current RF buffer isolating oscillator from variable load impedance of integrated transceiver. Use Value: 3.6mA supply current in 10–200MHz mode extends battery life; high input Z avoids VCO frequency drift during sleep/wake transitions. |
| Active Balun for SDR Front-End | PCS Mobile Phone VCO Interface |
|
Use Scenario: Converting single-ended VCO signal to balanced LO for high-linearity direct-conversion receiver in software-defined radio. IC Role / Device Role / Timing Role: Active balun with amplitude/phase balance maintained by matched differential output stage. Use Value: >45dB output-to-output isolation ensures minimal common-mode feedthrough; 14.9dB gain compensates hybrid insertion loss. |
Use Scenario: Interfacing a 900MHz/1.8GHz dual-band VCO to separate transmit and receive paths in GSM/EDGE handset. IC Role / Device Role / Timing Role: Band-selectable buffer enabling shared VCO architecture across frequency bands. Use Value: HI/LO pin allows runtime switching between bands - 10–200MHz mode for GSM900, 10–500MHz for DCS1800 - reducing component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF buffer amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2471EUT+T | Differential input (not single-ended); no HI/LO bandwidth select; fixed 10–500MHz operation at 5.5mA. | Requires differential VCO source; unsuitable where single-ended oscillator topology is fixed. | Select MAX2471EUT+T only when sourcing from transformer-coupled or fully differential VCOs and full 500MHz bandwidth is mandatory. |
| QPL9057TR13 | 50Ω input/output, fixed 50–4000MHz range, 17dB gain, 5.5mA, SOT-363 package. | Lacks bandwidth-select logic and high-Z input; requires 50Ω source termination, increasing VCO loading. | Choose QPL9057TR13 for wideband repeater or test equipment where 50Ω system impedance is standardized and VCO loading is not critical. |
Compared with MAX2471EUT+T and QPL9057TR13, the MAX2470EUT+T uniquely combines single-ended input compatibility, logic-selectable bandwidth, and ultra-low 3.6mA current in sub-200MHz mode - making it optimal for cost- and power-sensitive VCO buffering where oscillator topology and band segmentation are constrained.
Availability
MAX2470EUT+T is available at Aetrix Electronics and suitable for cellular transceiver design, ISM-band wireless sensor deployment, and active balun implementation requiring stable component supply, consistent RF performance across temperature, and long-term production continuity.
Supply support for MAX2470EUT+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for communications, computing, and industrial systems.
The MAX2470EUT+T belongs to Maxim's VCO buffer amplifier product line, engineered specifically for low-distortion, high-isolation interfacing between voltage-controlled oscillators and RF signal paths in portable and infrastructure wireless equipment.
FAQ
What is the function of the HI/LO pin on the MAX2470EUT+T?
The HI/LO pin on the MAX2470EUT+T selects internal bias configuration: tied to VCC, it enables 10–500MHz operation at 5.5mA supply current; tied to GND, it restricts operation to 10–200MHz while reducing current to 3.6mA. This dual-band capability allows one MAX2470EUT+T to serve multiple frequency plans without redesigning the RF layout or changing bill-of-materials.
Can the MAX2470EUT+T drive a 50Ω single-ended load directly?
Yes, the MAX2470EUT+T can drive two independent 50Ω single-ended loads - one from each output pin (OUT and OUT) - provided both outputs are AC-coupled and properly terminated. The device's differential output stage is designed for this configuration, delivering >45dB isolation between outputs to prevent crosstalk. DC coupling is prohibited per datasheet specifications.
Does the MAX2470EUT+T require external matching components at the input?
The MAX2470EUT+T features high input impedance (>1kΩ real part at 100MHz), allowing direct AC-coupling from many discrete VCOs without matching. However, for 50Ω VCO modules, a shunt 50Ω resistor at the IN pin is recommended to improve input match and reverse isolation. No series/shunt LC network is required unless optimizing for narrowband gain flatness.
What is the maximum junction temperature rating for the MAX2470EUT+T?
The MAX2470EUT+T has a maximum junction temperature of +150°C, with an operating ambient temperature range of -40°C to +85°C. Its SOT23-6 package provides 8.7mW/°C thermal derating above +70°C, supporting reliable operation in thermally constrained RF modules when proper PCB copper pour and via grounding are implemented.
How does the MAX2470EUT+T compare to the MAX2471EUT+T in terms of pin compatibility?
The MAX2470EUT+T and MAX2471EUT+T share identical SOT23-6 pinouts and package dimensions, but differ functionally: MAX2470EUT+T has a single-ended IN pin and HI/LO control, whereas MAX2471EUT+T replaces HI/LO with a second differential input (IN). They are not pin-compatible replacements - swapping them requires PCB trace modification to accommodate the different input topology and missing HI/LO control signal.
MAX2470EUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Buffer
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 5.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX2470EUT+T FAQ
1.How can I place an order for MAX2470EUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2470EUT+T 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 MAX2470EUT+T reliable?
The price and inventory of MAX2470EUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2470EUT+T is usually 5 days.
3.What payment methods are accepted for MAX2470EUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2470EUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2470EUT+T?
MAX2470EUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2470EUT+T 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 MAX2470EUT+T?
For technical support, including MAX2470EUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2470EUT+T requirements.
6.How does Aetrix verify that MAX2470EUT+T is sourced from the original manufacturer or authorized distributors?
All MAX2470EUT+T 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 MAX2470EUT+T meets industry standards.
7.What is the process for return or replacement of MAX2470EUT+T?
All MAX2470EUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX2470EUT+T, 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 MAX2470EUT+T part is unused and in its original packaging.
Return procedure for MAX2470EUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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