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Analog Devices Inc./Maxim Integrated MAX4265EUA
- Part No.:
- MAX4265EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4265EUA.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,089
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Product details
Overview
The MAX4265EUA from Maxim Integrated is a single-channel, unity-gain stable, ultra-low-distortion voltage-feedback operational amplifier optimized for high-frequency signal conditioning. It delivers 400MHz small-signal bandwidth, -90dBc spurious-free dynamic range at 5MHz, 900V/µs slew rate, and drives 100Ω loads with ±45mA output current - making it ideal for high-speed ADC drivers in telecom base-station IF stages.
For engineers reviewing the MAX4265EUA datasheet, MAX4265EUA pinout, MAX4265EUA application, or MAX4265EUA equivalent, key selection criteria include its 8-pin µMAX package, disable-mode functionality (active-low), 4.5V–8.0V single-supply operation, and verified performance in RF signal chains requiring <0.01% THD+N up to 100MHz.
Technical Context
The MAX4265EUA employs proprietary bipolar process technology to achieve low-voltage, single-supply operation while maintaining distortion performance typically seen only in dual-supply op amps. Its internal unity-gain compensation ensures stability without external phase compensation networks.
It features an active-low DISABLE input that places outputs in high-impedance state with 1.6mA quiescent current per amplifier, 100ns enable time, and 750µs disable time. Input common-mode range extends from (VEE + 1.6V) to (VCC – 1.6V), and output swing reaches within 1.1V of rails under 100Ω load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal BW (-3dB) | 400MHz - supports wideband IF and RF signal amplification up to cellular LTE/UWB bands |
| SFDR @ 5MHz | -90dBc - enables clean digitization of multi-tone signals in 14–16-bit ADC front-ends |
| Slew Rate | 900V/µs - ensures faithful reproduction of fast transient signals without slewing-induced distortion |
| Output Drive | ±45mA into 100Ω - sustains full-scale output swing driving coaxial cables or ADC input networks |
| Voltage Noise Density | 8nV/√Hz @ 1kHz - preserves SNR in low-level signal amplification paths (e.g., receiver LNA outputs) |
| Supply Range | +4.5V to +8.0V single supply - simplifies power architecture vs. dual-rail alternatives |
| Disable Current | 1.6mA per amplifier - reduces system idle power in time-multiplexed or burst-mode signal chains |
Pinout & Package
The MAX4265EUA is housed in an 8-pin µMAX® package (2.1mm × 2.3mm, 0.5mm pitch), thermally enhanced for high-speed analog operation and compatible with fine-pitch PCB assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DISABLE | Active-low enable control; logic low disables amplifier and forces output high-Z |
| 2 | IN- | Inverting input; accepts differential or single-ended feedback configurations |
| 3 | IN+ | Noninverting input; supports DC-coupled sensor or signal source interfaces |
| 4 | VEE | Negative supply pin; tied to ground in single-supply operation |
| 5 | OUT | Amplifier output; capable of ±45mA drive into 100Ω with rail-to-rail swing margin |
| 6 | VCC | Positive supply pin; accepts +4.5V to +8.0V; requires local 1nF + 0.1µF bypassing |
| 7 | N.C. | No internal connection; must be left floating or grounded per layout best practice |
| 8 | N.C. | No internal connection; same as Pin 7 |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Operates robustly at AV = +1V/V without external compensation, reducing BOM count in buffer applications |
| Ultra-low SFDR | -90dBc @ 5MHz enables >14-bit ENOB in wideband sampling systems with minimal post-processing |
| High output drive | ±45mA into 100Ω maintains signal integrity when driving terminated transmission lines or ADC input capacitance |
| Low-noise architecture | 8nV/√Hz input voltage noise density minimizes degradation of system SNR in gain stages preceding ADCs |
| Fast disable control | 100ns enable time allows sub-cycle activation in time-interleaved or gated receiver architectures |
Applications
| Base-Station IF Amplifier | High-Frequency ADC Driver |
|---|---|
Use Scenario: Amplifying 70–140MHz IF signals in LTE/FDD/TDD macrocell receivers prior to digitization. IC Role / Device Role / Timing Role: Single-ended voltage buffer with gain = +1, providing low-noise, low-distortion signal conditioning before ADC sampling. Use Value: -90dBc SFDR at 5MHz and 400MHz bandwidth preserve adjacent channel rejection and EVM performance. | Use Scenario: Driving the switched-capacitor input of a 125MSPS, 16-bit pipeline ADC in radar or software-defined radio. IC Role / Device Role / Timing Role: High-slew-rate output buffer delivering fast settling (<15ns to 0.1%) and low THD+N into 10pF + 1kΩ ADC input. Use Value: 900V/µs slew rate and ±45mA drive ensure full-scale step response without droop or harmonic corruption. |
| RF Telecom Line Driver | High-Speed DAC Output Buffer |
Use Scenario: Transmit-path line driver in point-to-point microwave backhaul, interfacing DAC output to 50Ω transmission line. IC Role / Device Role / Timing Role: Unity-gain current booster with disable control for power-gated transmit bursts. Use Value: 1.6mA disable current and 750µs disable time support energy-efficient TDMA frame scheduling. | Use Scenario: Post-DAC reconstruction filter buffer in wideband digital upconverter (DUC) modules operating up to 200MHz. IC Role / Device Role / Timing Role: Low-distortion, high-output-current stage isolating DAC core from reactive filter loads. Use Value: 35dBm IP3 at 20MHz and 0.1dB gain flatness to 100MHz maintain spectral purity across entire Nyquist zone. |
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 | Higher 1GHz GBW but higher 13nV/√Hz noise; no disable function; SOIC-8 package | Preferred where maximum bandwidth outweighs power-down capability and noise floor | Select when system requires >500MHz closed-loop bandwidth and disable mode is unnecessary |
| LMH6629MA/NOPB | Lower 1.9nV/√Hz noise but 200MHz bandwidth; no disable; 8-pin SOIC; higher quiescent current (12.5mA) | Better for ultra-low-noise preamp stages where bandwidth ≤200MHz suffices | Choose when SNR dominates over speed and power gating is not required |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4265EUA uniquely balances 400MHz bandwidth, -90dBc SFDR, active disable control, and 8nV/√Hz noise in a space-constrained µMAX package - making it optimal for power-aware, wideband receiver front-ends.
Availability
MAX4265EUA is available at Aetrix Electronics and suitable for base-station IF amplifiers, high-frequency ADC drivers, and RF telecom line drivers requiring stable component supply across extended production lifecycles.
Supply support for MAX4265EUA 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, communications, and computing applications.
The MAX4265–MAX4270 product line targets high-speed signal acquisition and conditioning in telecom infrastructure, offering ultra-low distortion, wide bandwidth, and disable functionality in compact packages.
FAQ
What is the operating supply voltage range for the MAX4265EUA?
The MAX4265EUA operates from a single +4.5V to +8.0V supply or dual ±2.25V to ±4.0V supplies. In single-supply configuration, VEE is connected to ground. The device maintains specified AC performance across this full range, including -90dBc SFDR at 5MHz and 400MHz bandwidth at both 4.5V and 8.0V rails.
Is the MAX4265EUA unity-gain stable, and what does that mean for circuit design?
Yes, the MAX4265EUA is internally compensated for unity-gain stability (AV = +1V/V). This means it can be used as a voltage follower or noninverting buffer without external phase-compensation components. Designers benefit from simplified layout, reduced component count, and guaranteed stability in gain-of-one configurations - critical for ADC input buffering and signal isolation.
How does the disable function work on the MAX4265EUA, and what is its impact on system power?
The MAX4265EUA features an active-low DISABLE pin (Pin 1). Pulling it low reduces quiescent supply current to 1.6mA per amplifier and places the output in high-impedance state. With 100ns enable time and 750µs disable time, it supports rapid power cycling in time-division multiplexed systems - enabling significant power savings during idle periods without compromising signal chain responsiveness.
What load conditions does the MAX4265EUA support, and how does it perform into 100Ω?
The MAX4265EUA is specifically characterized to drive 100Ω loads while maintaining ultra-low distortion: -90dBc SFDR at 5MHz and -47dBc at 100MHz (VOUT = 1Vp-p). It delivers ±45mA output current and sustains 1.1V rail margin under this load. This makes it suitable for driving terminated transmission lines, ADC input networks, and other moderate-impedance destinations without external current boosting.
Can the MAX4265EUA be used with dual supplies, and what are the voltage limits?
Yes, the MAX4265EUA supports dual-supply operation from ±2.25V to ±4.0V. The absolute maximum rating for supply voltage (VCC to VEE) is +8.5V, so combinations like +5V/–3V (8V total) are permissible and commonly used in video or asymmetric signal paths. Input common-mode range spans (VEE + 1.6V) to (VCC – 1.6V), ensuring robust operation across the full dual-supply envelope.
MAX4265EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 900V/µs
- Gain Bandwidth Product:
- 400 MHz
- -3db Bandwidth:
- 400 MHz
- Current - Input Bias:
- 3.5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 28mA
- Current - Output / Channel:
- 45 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
MAX4265EUA FAQ
1.How can I place an order for MAX4265EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4265EUA 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 MAX4265EUA reliable?
The price and inventory of MAX4265EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4265EUA is usually 5 days.
3.What payment methods are accepted for MAX4265EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4265EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4265EUA?
MAX4265EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4265EUA 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 MAX4265EUA?
For technical support, including MAX4265EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4265EUA requirements.
6.How does Aetrix verify that MAX4265EUA is sourced from the original manufacturer or authorized distributors?
All MAX4265EUA 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 MAX4265EUA meets industry standards.
7.What is the process for return or replacement of MAX4265EUA?
All MAX4265EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4265EUA, 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 MAX4265EUA part is unused and in its original packaging.
Return procedure for MAX4265EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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