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Analog Devices Inc./Maxim Integrated MAX4287EUA
- Part No.:
- MAX4287EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4287EUA.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,390
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Product details
Overview
MAX4287EUA from Maxim Integrated is a dual-channel, unity-gain-stable 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 high-fidelity signal conditioning for 12–16-bit, 50+ MSPS analog-to-digital converters 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 with rail-to-rail input (down to VEE), 8-pin µMAX package footprint, absence of disable functionality, and verified performance in multiplexed ADC front-end topologies requiring low crosstalk and fast settling.
Technical Context
The MAX4287EUA implements a voltage-feedback topology with internal unity-gain compensation, supporting stable operation at AV = +1V/V without external compensation. Its input stage extends common-mode range to the negative rail (VEE), enabling single-supply operation down to +2.85V while maintaining DC precision via 0.2mV typical input offset voltage and 73dB minimum CMRR.
It features matched dual amplifiers sharing a common 8-pin µMAX package, with measured crosstalk of –85dBc at 10MHz and output drive capability of ±77mA/–106mA into 20Ω loads. Unlike MAX4288/MAX4388 variants, it lacks enable/disable control pins - confirming fixed-operation design for continuous-sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 250MHz (small-signal, AV = +1V/V): supports >100MHz baseband signal conditioning for wideband ADCs |
| Slew Rate | 350V/µs (+3V supply): enables full-scale step response within 6ns to 0.1%, critical for transient fidelity |
| SFDR | 88dBc at f = 5MHz, VOUT = 1Vp-p: ensures ≥14.6-bit spurious-free resolution in ADC driver role |
| Input Offset Voltage | ±0.2mV max (TA = –40°C to +85°C): maintains DC accuracy across industrial temperature range |
| Supply Range | +2.85V to +6.5V single supply (or ±1.425V to ±3.25V dual): compatible with 3V and 5V system rails |
| Crosstalk | –85dBc at 10MHz: isolates channel A and B signals in dual-input ADC architectures |
| Quiescent Current | 24mA total (12mA per amplifier @ +3V): balances speed and power in space-constrained designs |
Pinout & Package
MAX4287EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with 8-pin SO but offering 55% smaller footprint. The package uses exposed pad for thermal enhancement and requires standard reflow profile per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA– | Inverting input, Amplifier A | Differential input node for first op-amp channel; accepts rail-to-rail common-mode voltage |
| 2 INA+ | Noninverting input, Amplifier A | High-impedance input (600kΩ) with 2pF capacitance; requires layout symmetry for noise rejection |
| 3 OUTA | Output, Amplifier A | Capable of ±77mA sourcing/sinking; linear range limited to VEE + 0.4V to VCC – 0.4V |
| 4 VEE | Negative supply / ground | Reference for single-supply operation; must be connected directly to low-inductance ground plane |
| 5 INB+ | Noninverting input, Amplifier B | Matched to INA+ in offset, bias current, and noise; enables differential pair buffering |
| 6 INB– | Inverting input, Amplifier B | Electrically identical to INA–; used with INB+ for second independent gain stage |
| 7 OUTB | Output, Amplifier B | Independent output with <0.5Ω typical impedance; supports simultaneous driving of two ADC inputs |
| 8 VCC | Positive supply | Requires local 0.1nF + 0.1µF bypassing; supplies both amplifiers from shared rail |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (VEE referenced) | Enables direct interfacing with ground-referenced sensors or DAC outputs without level-shifting circuitry |
| 250MHz bandwidth at AV = +1V/V | Supports Nyquist zones up to 125MHz for undersampled RF digitization in communications receivers |
| 88dBc SFDR at 5MHz | Meets dynamic range requirements for 14-bit effective resolution in high-speed data acquisition systems |
| –85dBc crosstalk at 10MHz | Preserves signal integrity in dual-channel time-interleaved or I/Q ADC configurations |
| 6ns 0.1% settling time | Allows ≤160MSPS sampling rates with <0.5 LSB settling error in 12-bit ADC interfaces |
| 8-pin µMAX package (3mm × 3mm) | Reduces PCB area by >50% vs. SO-8 while maintaining thermal performance via exposed pad |
Applications
| Communications Receiver Front-End | Ultrasound Beamformer Analog Path |
|---|---|
|
Use Scenario: Conditioning I/Q baseband signals prior to dual-channel 14-bit, 105MSPS ADC in LTE/5G radio transceivers. IC Role / Device Role / Timing Role: Dual-channel ADC driver providing matched gain, phase, and settling between I and Q paths. Use Value: –85dBc crosstalk and 6ns settling ensure <–70dBc image rejection and <0.25° phase mismatch across channels. |
Use Scenario: Driving 128-channel time-interleaved ADC array in portable ultrasound scanners with 40MHz bandwidth requirement. IC Role / Device Role / Timing Role: Per-channel buffer amplifying echo return signals before digitization at 65MSPS. Use Value: 250MHz bandwidth and 350V/µs slew rate preserve pulse fidelity of 5–15MHz acoustic signals with <1% distortion. |
| High-Speed Data Acquisition System | CCD Imaging Signal Chain |
|
Use Scenario: Buffering multiplexed sensor outputs (strain gauges, thermocouples) into a 16-bit, 2MSPS SAR ADC in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, fast-settling gain stage preceding sample-and-hold amplifier. Use Value: 10nV/√Hz input voltage noise and 6ns settling minimize measurement uncertainty during rapid channel switching. |
Use Scenario: Driving correlated double sampling (CDS) circuitry and 14-bit, 40MSPS ADC in scientific CCD cameras for low-light imaging. IC Role / Device Role / Timing Role: Precision buffer isolating CCD output from ADC input capacitance and digital noise. Use Value: Rail-to-rail input range accommodates CCD's 0–3.3V video swing; 88dBc SFDR preserves >12.5-bit ENOB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC buffer amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4288EUA | Includes dual active-low DISABLEA/DISABLEB pins; same 8-pin µMAX package and 250MHz bandwidth | Required where channel-level power gating or multiplexing is needed (e.g., time-shared ADC inputs) | Select MAX4288EUA only if enable/disable control is mandatory; MAX4287EUA offers lower complexity and cost for always-on operation |
| AD8022ARMZ | 2.2nV/√Hz input noise (vs. 10nV/√Hz), 130MHz bandwidth, no disable, 8-pin SOIC package | Better noise performance for low-frequency precision; insufficient bandwidth for >65MSPS ADCs | Choose AD8022ARMZ for sub-50MHz, ultra-low-noise applications; MAX4287EUA is superior for >100MHz signal bandwidths |
Compared with MAX4288EUA, MAX4287EUA eliminates enable logic overhead and reduces quiescent current by ~1mA per channel, simplifying power sequencing; versus AD8022ARMZ, it trades 12dB noise advantage for 120MHz extra bandwidth and µMAX footprint reduction - making it optimal for compact, wideband ADC front-ends.
Availability
MAX4287EUA is available at Aetrix Electronics and suitable for high-speed data acquisition, ultrasound imaging, and communications receiver designs requiring stable component supply, guaranteed industrial temperature range (–40°C to +85°C), and long-term production continuity.
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 industrial, communications, and medical applications.
The MAX4285–MAX4288 family was designed specifically as high-speed, low-distortion ADC buffer amplifiers - targeting demanding signal-chain applications where bandwidth, settling accuracy, and channel matching outweigh general-purpose op-amp flexibility.
FAQ
What is the maximum operating supply voltage for MAX4287EUA?
The MAX4287EUA supports a single-supply range of +2.85V to +6.5V or dual supplies of ±1.425V to ±3.25V. Absolute maximum supply voltage (VCC – VEE) is +7.5V. Operation beyond +6.5V risks parametric shift and reduced reliability; for 5V systems, MAX4287EUA delivers 250MHz bandwidth and 350V/µs slew rate with verified stability.
Does MAX4287EUA include a disable or shutdown feature?
No, MAX4287EUA does not include a disable function. Unlike MAX4288EUA or MAX4388 variants, it has no DISABLEA or DISABLEB pins. It operates continuously when powered, drawing 24mA total quiescent current. This fixed-operation design simplifies power sequencing and eliminates enable timing constraints in always-on ADC front-ends.
What is the input common-mode voltage range of MAX4287EUA?
The MAX4287EUA input common-mode range extends to the negative supply rail (VEE), including ground in single-supply configurations. Specifically, it operates from VEE to VCC – 1.25V. This rail-to-rail input capability allows direct interfacing with ground-referenced sources such as sensors, DACs, or CCD outputs without level-shifting circuitry.
Can MAX4287EUA drive a 50Ω transmission line directly?
MAX4287EUA can source ±77mA and sink –106mA, enabling direct 50Ω line driving at moderate amplitudes. However, its linear output range is limited to VEE + 0.4V to VCC – 0.4V. For a +3V supply, this restricts usable swing to 0.4V–2.6V (2.2Vpp), requiring attenuation or AC-coupling for full 50Ω compliance. A series 22Ω isolation resistor is recommended to suppress ringing.
Is MAX4287EUA pin-compatible with other devices in the MAX428x family?
MAX4287EUA shares the same 8-pin µMAX pinout with MAX4387EUA but differs from MAX4285/MAX4286 (6-pin SOT23) and MAX4288/MAX4388 (10-pin µMAX). Within the 8-pin µMAX group, pin functions are identical - INA–, INA+, OUTA, VEE, INB+, INB–, OUTB, VCC - enabling drop-in replacement between MAX4287EUA and MAX4387EUA when gain and bandwidth requirements align.
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:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Buffer, Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 385V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 250 MHz
- Current - Input Bias:
- 13 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 23mA (x2 Channels)
- 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:
- 8-uMAX/uSOP
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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