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Analog Devices Inc./Maxim Integrated MAX4266EUA-T
- Part No.:
- MAX4266EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4266EUA-T.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
The MAX4266EUA-T from Maxim Integrated is a single-channel, ultra-low-distortion voltage-feedback operational amplifier optimized for high-frequency signal conditioning in communications and data acquisition systems. It features +2V/V minimum stable gain, 350MHz -3dB bandwidth, 900V/µs slew rate, and operates from +4.5V to +8.0V single supply. Designed specifically as an ADC driver or IF amplifier, it delivers ±45mA output current into 100Ω while maintaining -90dBc SFDR at 5MHz.
For engineers reviewing the MAX4266EUA-T datasheet, MAX4266EUA-T pinout, MAX4266EUA-T application, or MAX4266EUA-T equivalent, key selection criteria include its decompensated +2V/V gain stability, disable-mode high-impedance output control, 8nV/√Hz input voltage noise, and µMAX-8 package compatibility with space-constrained RF signal chains.
Technical Context
The MAX4266EUA-T uses proprietary bipolar process technology to achieve ultra-low distortion in low-voltage single-supply operation - a capability typically reserved for dual-supply op amps. Its internal compensation ensures stability only at gains ≥+2V/V, distinguishing it from unity-gain-stable variants like MAX4265.
It integrates an active-low DISABLE_ pin enabling power-down mode (1.6mA per amplifier quiescent current) with 100ns enable time and 750µs disable time. Output remains high-impedance during disable, supporting multiplexed or shared-bus configurations without loading downstream stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (-3dB) | 350MHz - supports wideband IF and baseband signal paths up to UHF. |
| Slew Rate | 900V/µs - enables clean 1V step response with 1ns rise/fall time and 15ns 0.1% settling. |
| Spurious-Free Dynamic Range | -90dBc at 5MHz - critical for preserving SNR in 14–16-bit ADC front-ends. |
| Input Voltage Noise Density | 8nV/√Hz at 1kHz - low-noise performance essential for high-fidelity signal amplification. |
| Output Drive Capability | ±45mA into 100Ω - sufficient to drive terminated transmission lines and ADC input capacitors directly. |
| Supply Voltage Range | +4.5V to +8.0V single supply - compatible with standard +5V and +7.5V rails in telecom and instrumentation. |
| Disable Mode Quiescent Current | 1.6mA per amplifier - reduces system power by >95% vs. active mode (28mA typical). |
Pinout & Package
The MAX4266EUA-T is housed in an 8-pin µMAX® package (pin-compatible with SO-8), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement. The package supports reflow soldering and offers superior high-frequency performance versus SOIC due to reduced lead inductance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DISABLE_ | Active-low digital control input; pulls outputs to high-Z when logic low (≤VEE + 0.3V). |
| 2 | IN- | Inverting input terminal; differential pair input node with 40kΩ differential resistance. |
| 3 | IN+ | Noninverting input terminal; common-mode range extends from (VEE + 1.6V) to (VCC – 1.6V). |
| 4 | VEE | Negative power supply pin; tied to ground in single-supply operation. |
| 5 | VCC | Positive power supply pin; accepts +4.5V to +8.0V; requires local 1nF + 0.1µF bypassing. |
| 6 | OUT | Amplifier output; delivers ±45mA, swings within 1.1V of rails, and enters high-Z state during disable. |
| 7 | N.C. | No internal connection; must be left floating or grounded per layout best practices. |
| 8 | N.C. | No internal connection; same as Pin 7 - no routing or termination required. |
Key Features
| Feature | Design Value |
|---|---|
| +2V/V minimum stable gain | Enables higher loop gain and improved distortion performance vs. unity-gain designs at same frequency. |
| Active-low disable with 100ns enable | Allows precise timing-controlled power gating in burst-mode receivers and TDD systems. |
| 8nV/√Hz input voltage noise | Preserves dynamic range in low-level RF and IF signal paths where noise floor dominates SNR. |
| 35dBm IP3 at 20MHz | Supports linear amplification of multi-tone signals in broadband telecom infrastructure without intermodulation. |
| 100Ω load drive capability | Eliminates need for external buffer stages when driving 50Ω/100Ω transmission lines or ADC reference inputs. |
Applications
| Base-Station IF Amplifier | High-Speed ADC Driver |
|---|---|
Use Scenario: Amplifying 70MHz–250MHz intermediate frequency signals in LTE/FDD/TDD basestation transceivers before digitization. IC Role / Device Role / Timing Role: High-linearity IF gain block operating at +5V supply with disable control synchronized to TDMA frame timing. Use Value: -90dBc SFDR at 5MHz and 35dBm IP3 ensure minimal adjacent-channel interference and clean spectral purity for compliant air-interface operation. | Use Scenario: Buffering analog inputs to 14-bit, 105MSPS ADCs in software-defined radio and radar front-ends. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver delivering full-scale 1Vp-p signals with <15ns 0.1% settling to match ADC aperture jitter requirements. Use Value: 900V/µs slew rate and ±45mA drive capability charge 10–20pF ADC input capacitance without droop or overshoot. |
| RF Telecom Line Driver | High-Frequency DAC Output Buffer |
Use Scenario: Driving 100Ω back-terminated coaxial cables between RF modules in point-to-point microwave links. IC Role / Device Role / Timing Role: Wideband line driver with rail-to-rail compatible output swing and disable isolation during standby. Use Value: Output impedance <1Ω at 10MHz and 0.1dB gain flatness to 100MHz preserve amplitude fidelity across multi-octave bands. | Use Scenario: Isolating and amplifying DAC outputs in direct-conversion transmitters requiring >100MHz reconstruction bandwidth. IC Role / Device Role / Timing Role: Low-distortion buffer stage placed immediately after DAC to suppress switching artifacts and improve spectral regrowth margin. Use Value: -59dBc SFDR at 100MHz and <0.015% differential gain error maintain EVM compliance in QAM64/QAM256 modulated waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8009ARZ | Unity-gain stable; 1GHz GBW; higher 1.5nV/√Hz noise; no disable function. | Preferred for general-purpose +1V/V gain stages; unsuitable for +2V/V fixed-gain precision IF amps requiring power gating. | Select MAX4266EUA-T when gain ≥+2V/V, disable control, and ultra-low distortion at 5–100MHz are mandatory. |
| LMH6629MA/NOPB | Unity-gain stable; 720MHz GBW; 0.95nV/√Hz noise; no disable; different pinout (SO-8 but non-µMAX). | Better for ultra-low-noise preamp stages; lacks integrated disable and optimized SFDR at 100MHz. | Choose MAX4266EUA-T for telecom-grade SFDR (-90dBc @5MHz) and deterministic disable behavior in time-critical systems. |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4266EUA-T uniquely combines +2V/V decompensated stability, active disable with sub-µs timing, and industry-leading SFDR below 100MHz - making it irreplaceable in gain-fixed, power-gated, high-dynamic-range signal chains.
Availability
The MAX4266EUA-T is available at Aetrix Electronics and suitable for RF telecom infrastructure, high-speed data acquisition, and precision instrumentation applications requiring stable component supply, extended temperature operation (-40°C to +85°C), and long-term obsolescence management.
Supply support for MAX4266EUA-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 design house specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX4265–MAX4270 product line was engineered specifically for ultra-low-distortion, wideband signal conditioning in +5V telecom and test equipment - prioritizing SFDR, output drive, and disable functionality over generic op amp versatility.
FAQ
What is the minimum stable gain configuration for the MAX4266EUA-T?
The MAX4266EUA-T is internally compensated for a minimum stable closed-loop gain of +2V/V. It is not unity-gain stable; attempting to use it at gains below +2V/V may result in oscillation or degraded phase margin. For unity-gain applications, consider the MAX4265EUA-T instead.
Does the MAX4266EUA-T support dual-supply operation?
Yes, the MAX4266EUA-T operates from dual supplies ranging from ±2.25V to ±4.0V, provided the total supply voltage (VCC – VEE) does not exceed +8.5V. In dual-supply mode, VEE is connected to the negative rail and VCC to the positive rail, with DISABLE_ referenced to the appropriate logic level.
What is the typical disable current consumption of the MAX4266EUA-T?
In disabled state (DISABLE_ = VEE), the MAX4266EUA-T draws 1.6mA per amplifier. This represents a >95% reduction from its typical active-mode quiescent current of 28mA, enabling significant power savings in duty-cycled systems such as TDD radios and burst-mode receivers.
Can the MAX4266EUA-T drive a 50Ω load effectively?
Yes - the MAX4266EUA-T delivers ±45mA output current and is characterized driving 100Ω loads, which implies robust capability into 50Ω. However, output voltage swing will compress to ~2.5Vp-p (vs. ~3.25Vp-p into 100Ω), and SFDR degrades slightly. For optimal 50Ω performance, verify layout symmetry and use proper termination.
Is the µMAX-8 package of the MAX4266EUA-T RoHS-compliant and lead-free?
Yes, the MAX4266EUA-T is manufactured in a RoHS-compliant, lead-free µMAX-8 package. Maxim's datasheet specifies "Pb-Free" and "Green" marking for the -T suffix variant, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30°C/60% RH.
MAX4266EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 900V/µs
- Gain Bandwidth Product:
- 700 MHz
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 3.5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 28mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 8 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4266EUA-T FAQ
1.How can I place an order for MAX4266EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4266EUA-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 MAX4266EUA-T reliable?
The price and inventory of MAX4266EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4266EUA-T is usually 5 days.
3.What payment methods are accepted for MAX4266EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4266EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4266EUA-T?
MAX4266EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4266EUA-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 MAX4266EUA-T?
For technical support, including MAX4266EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4266EUA-T requirements.
6.How does Aetrix verify that MAX4266EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX4266EUA-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 MAX4266EUA-T meets industry standards.
7.What is the process for return or replacement of MAX4266EUA-T?
All MAX4266EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4266EUA-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 MAX4266EUA-T part is unused and in its original packaging.
Return procedure for MAX4266EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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