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Analog Devices Inc./Maxim Integrated MAX4287ESA
- Part No.:
- MAX4287ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4287ESA.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
MAX4287ESA from Maxim Integrated is a dual-channel, unity-gain-stable voltage-feedback operational amplifier optimized as an ADC input buffer. It delivers 250MHz -3dB bandwidth, 350V/µs slew rate, and 88dBc SFDR at 5MHz under +3V supply, operating from +2.85V to +6.5V single supply with rail-to-rail common-mode input down to VEE (ground). It targets high-speed data acquisition in communications and instrumentation systems.
For engineers reviewing the MAX4287ESA datasheet, MAX4287ESA pinout, MAX4287ESA application, or MAX4287ESA equivalent, key selection criteria include dual-channel ADC driver performance at 3V, disable-enabled multiplexing capability, SO-8 package compatibility, and verified 250MHz small-signal bandwidth with <6ns settling time to 0.1%.
Technical Context
The MAX4287ESA implements a voltage-feedback architecture with internal unity-gain compensation, enabling stable operation at AV = +1V/V. Its input stage extends common-mode range to VEE, supporting single-supply ground-referenced signal conditioning ahead of high-speed ADCs.
It features no disable function-unlike MAX4288/MAX4388-so both amplifiers remain active continuously. Output drive capability of ±77mA/–106mA supports low-impedance dynamic loads such as SAR and pipeline ADC inputs without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 250MHz at AV = +1V/V - enables full-power analog signal conditioning up to Nyquist frequencies of ≥125MSPS ADCs |
| Slew Rate | 350V/µs - supports clean 1V step response within 2.8ns rise time for fast transient fidelity |
| Settling Time | 6ns to 0.1% - ensures accurate sampling window closure before ADC aperture time |
| SFDR | 88dBc at f = 5MHz - meets dynamic range requirements for 14-bit+ ADC drivers in baseband receivers |
| Supply Range | +2.85V to +6.5V single supply - compatible with 3.3V and 5V system rails without level-shifting |
| Input CM Range | VEE to VCC – 1.25V - allows direct interface to ground-referenced sensors and DAC outputs |
| Output Drive | –106mA sink / +77mA source - drives 300Ω ADC input loads while maintaining linearity and settling spec |
Pinout & Package
MAX4287ESA is housed in an 8-pin SO (Small Outline) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and exposed pad not connected internally.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA– | Inverting input of Amplifier A - referenced to feedback network in inverting configurations |
| 2 | INA+ | Noninverting input of Amplifier A - accepts single-ended or differential input signals directly |
| 3 | OUTA | Output of Amplifier A - drives ADC input or downstream stage with low output impedance (0.5Ω) |
| 4 | VEE | Negative supply / ground - establishes reference for single-supply operation and bias current return path |
| 5 | VCC | Positive supply - supplies both amplifiers; requires local 0.1nF + 0.1µF bypassing per layout guidelines |
| 6 | INB+ | Noninverting input of Amplifier B - independent channel for dual-signal conditioning or I/Q paths |
| 7 | INB– | Inverting input of Amplifier B - used with external resistors for gain-setting in precision configurations |
| 8 | OUTB | Output of Amplifier B - electrically isolated from OUTA; supports simultaneous dual-channel ADC interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel unity-gain stability | Internally compensated for AV ≥ +1V/V - eliminates need for external compensation components in most ADC buffer layouts |
| Rail-to-rail input common-mode range | Extends to VEE (ground) - enables direct connection to ground-referenced sources without level-shifting circuitry |
| Low distortion at high frequency | 88dBc SFDR @ 5MHz - preserves signal integrity for wideband IF sampling and direct RF digitization |
| High output current drive | ±77mA/–106mA - sustains full-scale swing into 300Ω loads typical of modern high-speed ADC front ends |
| Fast settling performance | 6ns to 0.1% - matches sub-10ns aperture times of 100+ MSPS ADCs without timing margin loss |
Applications
| Communications Baseband Receiver | High-Speed Data Acquisition System |
|---|---|
|
Use Scenario: Conditioning I/Q analog signals prior to simultaneous sampling by dual-channel 125MSPS pipeline ADCs in LTE/FDD receivers. IC Role / Device Role / Timing Role: Dual-channel ADC driver providing matched gain, phase, and settling across I and Q paths with <1ps skew. Use Value: 250MHz bandwidth and 88dBc SFDR preserve EVM and ACLR performance up to 60MHz instantaneous bandwidth. |
Use Scenario: Driving two independent 10-bit, 200MSPS SAR ADCs in automated test equipment capturing transient waveforms. IC Role / Device Role / Timing Role: Low-latency, high-fidelity analog front-end buffer ensuring accurate capture of fast edges and pulse shapes. Use Value: 6ns settling time and ±106mA sink capability enable full-scale 1Vpp step response without droop or overshoot. |
| Ultrasound Beamformer Channel | CCD Imaging Signal Chain |
|
Use Scenario: Amplifying and buffering echo return signals from 128-element transducer arrays before digitization in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth dual op-amp serving as channel-specific gain stage and ADC interface. Use Value: 10nV/√Hz input voltage noise and rail-to-rail input range maximize SNR across variable echo amplitudes. |
Use Scenario: Buffering correlated double-sampled (CDS) pixel outputs from linear CCD sensors in industrial inspection cameras. IC Role / Device Role / Timing Role: Precision dual op-amp delivering matched DC offset rejection and AC-coupled video bandwidth. Use Value: 50µV max input offset and 73dB CMRR suppress reset noise and common-mode interference in CDS timing windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4288ESA | Includes dual active-low disable pins (DISABLEA/DISABLEB); same SO-8 package and 250MHz bandwidth | Required where channel-level power gating or multiplexing is needed; adds 1.5ns delay vs. MAX4287ESA in enable path | Select MAX4288ESA only if per-amplifier disable control is mandatory; otherwise MAX4287ESA offers lower quiescent current (20mA vs. 23mA) |
| AD8021ARZ | Single-channel, 200MHz bandwidth, ±5V supply only; no disable; SO-8 package | Not suitable for dual-signal paths without duplication; lacks rail-to-rail input and 3V operation | Use AD8021ARZ only for legacy ±5V systems requiring proven reliability; MAX4287ESA provides superior 3V performance and dual-channel integration |
Compared with MAX4288ESA, MAX4287ESA trades disable functionality for lower supply current and simpler control logic; versus AD8021ARZ, it delivers true dual-channel operation, 3V compatibility, and enhanced SFDR-making it the optimal choice for space-constrained, battery-aware, or multi-channel high-speed data acquisition designs.
Availability
MAX4287ESA is available at Aetrix Electronics and suitable for high-speed data acquisition systems, communications baseband receivers, and ultrasound beamformer modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX4287ESA 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, and signal-chain applications.
The MAX4285–MAX4288 family was designed specifically as high-speed, low-voltage ADC buffer amplifiers-targeting demanding applications in communications infrastructure, medical imaging, and automated test equipment where bandwidth, distortion, and supply flexibility are critical.
FAQ
Does MAX4287ESA support single-supply operation at 3.3V?
Yes, MAX4287ESA operates from +2.85V to +6.5V single supply, fully supporting 3.3V systems. At VCC = +3.3V, it maintains 250MHz bandwidth, 350V/µs slew rate, and rail-to-rail input common-mode range down to ground-enabling direct interface with 3.3V ADCs and sensors without level shifters.
What is the maximum load capacitance MAX4287ESA can drive stably?
MAX4287ESA is optimized for resistive loads like ADC inputs (typically 300Ω). For capacitive loads >10pF, stability requires an isolation resistor (20–30Ω) between output and load, as specified in the datasheet's "Output Capacitive Loading and Stability" section. Uncompensated direct driving of >50pF loads risks peaking or oscillation.
Is MAX4287ESA pin-compatible with other devices in the MAX428x family?
No-MAX4287ESA (dual, no disable, SO-8) is not pin-compatible with MAX4288ESA (dual, with DISABLEA/DISABLEB, SO-8), which repurposes pins 5 and 6 as disable controls. Pin mapping differs across variants; always verify against the specific device's Pin Configurations diagram before PCB layout.
What is the typical input offset voltage matching between channels in MAX4287ESA?
The MAX4287ESA specifies ∆VOS (input offset voltage matching) as ±0.2mV maximum. This tight matching ensures minimal gain/phase error between I and Q channels in coherent receiver applications, preserving image rejection and demodulation accuracy without calibration.
Does MAX4287ESA require external compensation for unity-gain operation?
No-MAX4287ESA is internally compensated for unity-gain stability (AV = +1V/V). External compensation is unnecessary in standard noninverting or inverting buffer configurations. Compensation is only required if configured for gains below +1V/V (e.g., attenuators), which is outside its specified operating range.
MAX4287ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
MAX4287ESA FAQ
1.How can I place an order for MAX4287ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4287ESA 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 MAX4287ESA reliable?
The price and inventory of MAX4287ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4287ESA is usually 5 days.
3.What payment methods are accepted for MAX4287ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4287ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4287ESA?
MAX4287ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4287ESA 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 MAX4287ESA?
For technical support, including MAX4287ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4287ESA requirements.
6.How does Aetrix verify that MAX4287ESA is sourced from the original manufacturer or authorized distributors?
All MAX4287ESA 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 MAX4287ESA meets industry standards.
7.What is the process for return or replacement of MAX4287ESA?
All MAX4287ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4287ESA, 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 MAX4287ESA part is unused and in its original packaging.
Return procedure for MAX4287ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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