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Analog Devices Inc./Maxim Integrated MAX4286EUT
- Part No.:
- MAX4286EUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4286EUT.pdf
- Description:
- ADC BUFFER AMPLIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:1,654
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Product details
Overview
MAX4286EUT from Maxim Integrated is a single-channel, high-speed voltage-feedback operational amplifier optimized as an ADC input buffer for +3V/+5V systems. It delivers 150MHz -3dB bandwidth at minimum gain of +5V/V, 350V/µs slew rate, and 88dBc SFDR at 5MHz - enabling precise signal conditioning in communications and instrumentation data acquisition chains.
For engineers reviewing the MAX4286EUT datasheet, MAX4286EUT pinout, MAX4286EUT application, or MAX4286EUT equivalent, this page provides verified specifications, SOT23-6 package details, disable timing (40ns enable / 50ns disable), output drive (±106mA/±77mA), and real-world multiplexing use cases with high-impedance state behavior.
Technical Context
The MAX4286EUT is internally compensated for stable operation at gains ≥+5V/V, distinguishing it from unity-gain-stable variants like MAX4285. Its voltage-feedback architecture supports fast settling (6ns to 0.1%) and low distortion across wide load ranges (100Ω–1kΩ), with input common-mode range extending to VEE (ground in single-supply mode).
It features active-low high-speed disable (DISABLE pin), reducing quiescent current to 1mA and raising output impedance to ~35kΩ - enabling clean analog signal multiplexing without external switches. The device operates from +2.85V to +6.5V single supply or ±1.425V to ±3.25V dual supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 150MHz at AV = +5V/V - ensures fidelity for >75MHz Nyquist-band signals driving high-speed ADCs. |
| Slew Rate | 350V/µs - supports full-scale 1V step transitions in under 3ns without slewing distortion. |
| SFDR @ 5MHz | 88dBc - meets dynamic range requirements for 14-bit+ ADC drivers in baseband receivers. |
| Output Drive | −106mA sink / +77mA source - directly drives low-Z ADC inputs (e.g., 50Ω–200Ω differential termination). |
| Disable Time | 50ns - enables sub-100ns channel switching in time-interleaved or multiplexed sampling systems. |
| Input CM Range | Extends to VEE (0V) - allows rail-to-rail input signal capture in single-supply 3V systems. |
| Quiescent Current | 20mA per amplifier (active), 1mA (disabled) - balances performance and power in burst-mode acquisition. |
Pinout & Package
MAX4286EUT is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), with exposed pad not electrically connected. Pin 1 is marked via laser scribe; pinout follows standard SOT23 orientation (top view, notch left).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− | Inverting input - connects to feedback network in inverting configurations or ground reference in noninverting setups. |
| 2 | IN+ | Noninverting input - accepts single-ended or differential input signals; CM range extends to VEE. |
| 3 | VEE | Negative supply / ground - must be tied to system ground in single-supply operation; decoupling critical. |
| 4 | DISABLE | Active-low enable control - logic low disables amplifier, placing output in high-Z state (~35kΩ). |
| 5 | VCC | Positive supply - accepts +2.85V to +6.5V; requires local 0.1nF + 0.1µF bypassing. |
| 6 | OUT | Amplifier output - drives ADC input directly; linear range is VEE + 0.4V to VCC − 0.4V. |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Disable | 40ns enable / 50ns disable with <35kΩ output impedance - enables seamless analog multiplexing without external switches. |
| Low Distortion at 5MHz | 88dBc SFDR - preserves signal integrity for high-resolution ADCs in LTE, radar, and medical imaging front-ends. |
| Single-Supply Operation | +2.85V to +6.5V range with rail-to-rail input (to VEE) - simplifies power design in portable and embedded systems. |
| High Output Current | ±106mA sink/source - drives heavy capacitive loads (e.g., ADC sample-and-hold capacitance) without gain peaking. |
| Stability at Gain ≥+5V/V | Internally compensated - eliminates need for external compensation components in fixed-gain buffer designs. |
Applications
| High-Speed ADC Drivers | Communications Equipment |
|---|---|
|
Use Scenario: Driving the analog input of a 105MSPS 14-bit pipeline ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: ADC buffer amplifier providing gain-of-five signal conditioning, DC-coupled interface, and fast disable during channel hopping. Use Value: 150MHz bandwidth and 88dBc SFDR ensure ENOB ≥12.5 bits; 50ns disable enables <100ns inter-channel isolation. |
Use Scenario: Signal conditioning stage before RF DAC in a broadband DOCSIS 4.0 upstream transmitter. IC Role / Device Role / Timing Role: High-linearity driver for DAC output reconstruction filter, operating from +3.3V supply. Use Value: 350V/µs slew rate handles 200MHz composite signals; −106mA sink capability drives 50Ω back-termination cleanly. |
| Instrumentation | Ultrasound |
|
Use Scenario: Front-end buffer for a 12-bit, 50MSPS digitizer in portable oscilloscope hardware. IC Role / Device Role / Timing Role: Single-supply ADC driver with rail-to-rail input, enabling full-scale capture of ±1V sensor outputs. Use Value: Input CM range to VEE eliminates level-shifting circuitry; 6ns settling time supports accurate multi-cycle averaging. |
Use Scenario: Transmit beamformer channel driver feeding 5MHz piezoelectric transducer arrays. IC Role / Device Role / Timing Role: High-current pulse driver delivering short-duration, high-slew excitation bursts. Use Value: ±106mA output drive delivers required 20Vpp into 100Ω transducer loads; 350V/µs slew avoids pulse rounding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC buffer amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4285EUT-T | Unity-gain stable (AV ≥ +1V/V); 250MHz bandwidth; same SOT23-6 package and disable timing. | Better suited for variable-gain or unity-gain buffer stages where gain may drop below +5V/V. | Select MAX4285EUT-T when gain flexibility or wider bandwidth at low gain is required; MAX4286EUT is preferred for fixed +5V/V ADC interfaces. |
| THS4509IDR | Dual-channel, 2GHz GBW, 5000V/µs slew; requires external compensation; no integrated disable function. | Targeted at ultra-high-frequency (>500MHz) IF sampling, not cost-sensitive 100–150MHz ADC front-ends. | Choose THS4509IDR only when >200MHz small-signal bandwidth is mandatory and disable functionality is implemented externally. |
Compared with MAX4285EUT-T and THS4509IDR, the MAX4286EUT offers optimal trade-off of bandwidth (150MHz), disable speed (50ns), and integration (single-channel, internal compensation, SOT23 footprint) for fixed-gain, space-constrained ADC driver applications.
Availability
MAX4286EUT is available at Aetrix Electronics and suitable for high-speed data acquisition, communications transceivers, and portable instrumentation requiring stable component supply and guaranteed long-term availability.
Supply support for MAX4286EUT 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 power management ICs for industrial, communications, and consumer applications.
The MAX4285–MAX4288 family was designed specifically as high-speed, low-distortion ADC buffer amplifiers with integrated disable for time-multiplexed and burst-mode data acquisition systems.
FAQ
What is the minimum stable gain for MAX4286EUT?
The MAX4286EUT is internally compensated for stable operation at gains of +5V/V or greater. It is not unity-gain stable - using it at gains below +5V/V risks oscillation or peaking. For unity-gain applications, select MAX4285EUT-T instead. The MAX4286EUT datasheet specifies gain flatness and bandwidth only for AV ≥ +5V/V configurations.
Does MAX4286EUT support single-supply operation down to 2.85V?
Yes, MAX4286EUT operates from a single +2.85V to +6.5V supply. At VCC = +2.85V, it maintains full AC performance including 150MHz bandwidth and 88dBc SFDR at 5MHz, with input common-mode range extending to VEE (0V). Quiescent current remains 20mA per amplifier in active mode.
What is the output impedance of MAX4286EUT when disabled?
When DISABLE is pulled low, the MAX4286EUT output enters a high-impedance state with typical impedance of 35kΩ. This value is confirmed in the "Detailed Description" section and supported by typical operating characteristics (Figure MA4285-15, OFF-Isolation vs. Frequency). The 2pF output capacitance remains, preserving high-frequency isolation.
Can MAX4286EUT drive a 50Ω load directly?
Yes, MAX4286EUT can drive a 50Ω load directly: its output delivers −106mA sink and +77mA source current, sufficient for ±1V output swings into 50Ω. However, for optimal stability with reactive loads (e.g., ADC input capacitance), a 20Ω–30Ω series isolation resistor is recommended per the Applications Information section.
Is the SOT23-6 package of MAX4286EUT RoHS-compliant and lead-free?
Yes, MAX4286EUT-T (the tape-and-reel ordering variant) is RoHS-compliant and lead-free, as confirmed in Maxim's official packaging documentation and Digi-Key/Mouser product listings. The SOT23-6 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements.
MAX4286EUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- Buffer, Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 385V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 130 MHz
- Current - Input Bias:
- 13 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 23mA
- Current - Output / Channel:
- 106 mA
- Voltage - Supply Span (Min):
- 2.85 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX4286EUT FAQ
1.How can I place an order for MAX4286EUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4286EUT 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 MAX4286EUT reliable?
The price and inventory of MAX4286EUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4286EUT is usually 5 days.
3.What payment methods are accepted for MAX4286EUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4286EUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4286EUT?
MAX4286EUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4286EUT 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 MAX4286EUT?
For technical support, including MAX4286EUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4286EUT requirements.
6.How does Aetrix verify that MAX4286EUT is sourced from the original manufacturer or authorized distributors?
All MAX4286EUT 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 MAX4286EUT meets industry standards.
7.What is the process for return or replacement of MAX4286EUT?
All MAX4286EUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4286EUT, 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 MAX4286EUT part is unused and in its original packaging.
Return procedure for MAX4286EUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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