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Analog Devices Inc./Maxim Integrated MAX4287EUA+
- Part No.:
- MAX4287EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4287EUA+.pdf
- Description:
- ADC BUFFER AMPLIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,309
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Product details
Overview
MAX4287EUA+ from Maxim Integrated is a dual-channel, unity-gain-stable, high-speed voltage-feedback operational amplifier optimized as an ADC input buffer. It delivers 250MHz small-signal -3dB bandwidth, 350V/µs slew rate, and 88dBc SFDR at 5MHz under +3V supply, enabling precise signal conditioning for high-resolution, high-sample-rate data acquisition in communications and instrumentation systems.
For engineers reviewing the MAX4287EUA+ datasheet, MAX4287EUA+ pinout, MAX4287EUA+ application, or MAX4287EUA+ equivalent, key selection criteria include its dual-amplifier architecture, 8-pin µMAX package, disable-free operation (no ENABLE/DISABLE pins), ±106mA/±77mA output drive, and guaranteed performance from -40°C to +85°C across single +2.85V to +6.5V supplies.
Technical Context
The MAX4287EUA+ is a dual, internally compensated voltage-feedback op amp designed specifically for driving high-speed analog-to-digital converters. Its unity-gain stability, rail-to-rail input common-mode range (down to VEE), and low distortion make it suitable for direct connection to ADC front-ends without external compensation.
Unlike the MAX4288/MAX4388 variants, the MAX4287EUA+ lacks dedicated disable inputs - it operates continuously with 24mA typical quiescent current (per amplifier) and achieves 6ns settling time to 0.1% with 20Ω load. Its differential input stage supports high CMRR (73dB min) and PSRR (50dB min), critical for noise-sensitive sampling paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 250MHz at AV = +1V/V - enables full-power bandwidth support for ≥125MSPS ADCs with minimal gain peaking. |
| Slew Rate | 350V/µs - ensures faithful reproduction of fast transient signals up to ~55MHz full-power sine wave without slewing distortion. |
| SFDR @ 5MHz | 88dBc - meets dynamic range requirements for 14-bit+ ADCs in baseband and IF sampling applications. |
| Output Drive | ±106mA sink / ±77mA source - drives low-impedance ADC inputs (e.g., 50Ω terminated) while maintaining linearity and settling fidelity. |
| Input Voltage Range | Extends to VEE (ground in single-supply) - allows DC-coupled input stages with zero-VIN capability and wide common-mode flexibility. |
| Supply Range | +2.85V to +6.5V single supply - supports portable, battery-powered, and industrial 3.3V/5V systems without dual-rail generation. |
| Quiescent Current | 24mA per amplifier (typ) - balances high-speed performance with moderate power consumption in continuous-operation buffer stages. |
Pinout & Package
MAX4287EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced with exposed pad for improved power dissipation. Pin pitch is 0.5mm; recommended reflow profile complies with JEDEC J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input of Amplifier A - connects to feedback network in inverting configurations or termination in noninverting setups. |
| 2 | INA+ | Noninverting input of Amplifier A - accepts differential or single-ended signal source; referenced to ground or bias network. |
| 3 | OUTA | Amplifier A output - directly interfaces ADC input or passive filter; requires local 0.1µF bypass to VEE. |
| 4 | VEE | Negative supply / ground - must be low-impedance plane; shared return path for both amplifiers and ADC reference. |
| 5 | VCC | Positive supply - bypassed with 0.1nF ceramic + 0.1µF tantalum close to pin; defines operating headroom and output swing limits. |
| 6 | INB+ | Noninverting input of Amplifier B - independent channel for dual-path signal conditioning or I/Q channel buffering. |
| 7 | INB− | Inverting input of Amplifier B - used for matched gain-setting with Amplifier A or separate signal chain configuration. |
| 8 | OUTB | Amplifier B output - electrically isolated from OUTA; supports simultaneous dual-channel ADC sampling or redundancy schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unity-gain stable amplifiers | Eliminates need for external compensation components; simplifies layout and reduces BOM count in dual-channel ADC front-ends. |
| Rail-to-rail input common-mode range | Supports DC-coupled inputs down to ground, enabling zero-VIN operation and flexible level-shifting without external biasing. |
| High output current drive (±106mA) | Drives heavy capacitive loads (e.g., ADC sample-and-hold capacitance) while maintaining <0.1% settling within 6ns. |
| Low distortion (88dBc SFDR @ 5MHz) | Preserves signal integrity for high-resolution digitization; meets ENOB >13.5 bits at 5MHz input frequency. |
| Single-supply operation (+2.85V to +6.5V) | Reduces system power architecture complexity; compatible with standard 3.3V and 5V logic rails and LDO outputs. |
Applications
| Communications Baseband Processing | Medical Ultrasound Beamforming |
|---|---|
|
Use Scenario: Conditioning I/Q analog signals prior to dual-channel high-speed ADC sampling in LTE/5G transceivers. IC Role / Device Role / Timing Role: Dual-channel ADC driver providing matched gain, phase, and settling between I and Q paths. Use Value: 88dBc SFDR and 250MHz bandwidth preserve modulation accuracy and EVM for wideband OFDM signals up to 100MHz RF bandwidth. |
Use Scenario: Driving multiplexed analog channels from ultrasound transducer arrays into high-sample-rate ADCs. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer for time-gated echo signals with variable gain control. Use Value: 6ns settling time and ±106mA drive ensure accurate capture of short-duration, high-frequency echo pulses without droop or overshoot. |
| Industrial Data Acquisition Systems | Test & Measurement Digitizers |
|
Use Scenario: Front-end signal conditioning for 16-bit, 1MSPS simultaneous-sampling ADC modules in PLC analog input cards. IC Role / Device Role / Timing Role: Dual-channel precision buffer with rail-to-rail input supporting sensor outputs from 0V to full-scale. Use Value: Input common-mode range extending to VEE enables direct interface with grounded sensors (e.g., RTDs, strain gauges) without level shifters. |
Use Scenario: High-fidelity analog input stage for benchtop oscilloscopes and spectrum analyzers requiring >100MHz real-time bandwidth. IC Role / Device Role / Timing Role: Low-distortion, wide-bandwidth ADC driver enabling accurate time-domain and frequency-domain analysis. Use Value: 250MHz -3dB bandwidth and 350V/µs slew rate support clean acquisition of fast edges and high-frequency sinusoids up to Nyquist limit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-speed ADC buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4288EUA+ | Dual-channel with independent DISABLEA/DISABLEB pins; 10-pin µMAX; same 250MHz BW but higher quiescent current (28mA typ per amp). | Required where channel-level power gating is needed (e.g., time-multiplexed ADC inputs or power-aware systems). | Select MAX4288EUA+ only if per-amplifier enable/disable functionality is mandatory; otherwise MAX4287EUA+ offers simpler control and smaller footprint. |
| AD8021ARMZ | Single-channel, 200MHz bandwidth, 2250V/µs slew rate, ±5V supply only; no disable; SO-8 package. | Limited to single-path designs; unsuitable for dual-channel synchronous sampling without duplication. | Choose AD8021ARMZ for cost-sensitive, single-channel applications where ultra-high slew rate outweighs dual-channel integration and 3V operation. |
Compared with MAX4288EUA+, MAX4287EUA+ saves board space and eliminates enable timing constraints, while AD8021ARMZ trades dual-channel integration and single-supply flexibility for raw slew rate - making MAX4287EUA+ optimal for compact, 3.3V-based dual-path ADC front-ends.
Availability
MAX4287EUA+ is available at Aetrix Electronics and suitable for communications baseband processing, medical ultrasound beamforming, and industrial data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX4287EUA+ 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 and mixed-signal ICs for power, sensing, connectivity, and signal conditioning.
The MAX4285–MAX4288 family was designed explicitly for high-speed ADC driver applications - prioritizing bandwidth, low distortion, fast settling, and robust output drive in compact packages for communications, instrumentation, and imaging systems.
FAQ
What is the supply voltage range supported by the MAX4287EUA+?
The MAX4287EUA+ operates from a single +2.85V to +6.5V supply or dual ±1.425V to ±3.25V supplies. At +3V nominal, it delivers full specified performance including 250MHz bandwidth and 88dBc SFDR. The input common-mode range extends to VEE (ground in single-supply mode), enabling true rail-to-rail input operation - a key requirement for interfacing with grounded sensor outputs or DC-coupled signal chains.
Does the MAX4287EUA+ have a disable or shutdown function?
No, the MAX4287EUA+ does not include a disable input. Unlike the MAX4288EUA+ or MAX4388 variants, it is a continuously operating dual op amp with no ENABLE/DISABLE pins. Its quiescent supply current is 24mA per amplifier (typical) under normal operation. This design simplifies control logic and eliminates enable/disable timing considerations, making it ideal for always-on ADC buffer applications where power gating is unnecessary.
What is the settling time and output drive capability of the MAX4287EUA+?
The MAX4287EUA+ achieves 6ns settling time to 0.1% with a 20Ω load and provides ±106mA sink / ±77mA source output current drive. This combination enables rapid, accurate charging of ADC sample-and-hold capacitors and robust driving of low-impedance or dynamically varying loads - critical for maintaining ENOB and minimizing aperture jitter in high-speed digitization systems.
Which package type is used for the MAX4287EUA+?
The MAX4287EUA+ is supplied in an 8-pin µMAX package (3mm × 3mm, 0.8mm height) with 0.5mm pitch and exposed thermal pad. This space-constrained, thermally efficient package supports high-density PCB layouts typical in portable instrumentation and communications modules. It is pin-compatible with the 8-pin SO variant (MAX4287ESA) but offers significantly reduced footprint and improved thermal performance.
How does the MAX4287EUA+ compare to the MAX4285EUT-T in terms of channel count and application scope?
The MAX4287EUA+ is a dual-channel amplifier, whereas the MAX4285EUT-T is a single-channel device in SOT23-6. Both share identical AC performance (250MHz BW, 350V/µs SR, 88dBc SFDR), but MAX4287EUA+ enables synchronized dual-path signal conditioning - essential for I/Q demodulation, differential ADC inputs, or redundant sensing. Its 8-pin µMAX footprint also supports better thermal management than the 6-pin SOT23, making it preferable for sustained high-output-drive operation.
MAX4287EUA+ 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
- Type:
- ADC Driver
- Applications:
- Medical Ultrasound Imaging, Sonar
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-µMAX
MAX4287EUA+ FAQ
1.How can I place an order for MAX4287EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4287EUA+ 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 MAX4287EUA+ reliable?
The price and inventory of MAX4287EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4287EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4287EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4287EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4287EUA+?
MAX4287EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4287EUA+ 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 MAX4287EUA+?
For technical support, including MAX4287EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4287EUA+ requirements.
6.How does Aetrix verify that MAX4287EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4287EUA+ 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 MAX4287EUA+ meets industry standards.
7.What is the process for return or replacement of MAX4287EUA+?
All MAX4287EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4287EUA+, 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 MAX4287EUA+ part is unused and in its original packaging.
Return procedure for MAX4287EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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