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Analog Devices Inc./Maxim Integrated MAX4287ESA+T
- Part No.:
- MAX4287ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4287ESA+T.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,958
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Product details
Overview
MAX4287ESA+T 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 12–14-bit, 50–100MSPS analog-to-digital converters in communications and instrumentation systems.
For engineers reviewing the MAX4287ESA+T datasheet, MAX4287ESA+T pinout, MAX4287ESA+T application, or MAX4287ESA+T equivalent, key selection criteria include its dual-amplifier architecture, 8-pin SO package, disable-free operation (no DISABLE pins), ±1.425V to ±3.25V / +2.85V to +6.5V supply flexibility, rail-to-rail input common-mode range (to VEE), and 20mA per amplifier quiescent current.
Technical Context
The MAX4287ESA+T is a dual voltage-feedback op amp with internal unity-gain compensation, supporting stable operation at AV = +1V/V. Its input stage extends to the negative rail (VEE), enabling single-supply ground-referenced signal acquisition. Each amplifier draws 20mA quiescent current and achieves 6ns settling time to 0.1% with 1V step.
Unlike the MAX4288/MAX4388 family, it lacks high-speed disable functionality-no DISABLEA or DISABLEB pins-making it suitable for always-on buffer applications. Its AC performance is characterized at RL = 300Ω to VCC/2, AVCL = +1V/V, and VCM = 1V (at +3V supply), with typical SFDR of 88dBc at fC = 5MHz and output drive of –106mA/+77mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 250MHz (small-signal, AV = +1V/V): supports >100MHz baseband signal conditioning before ADC sampling. |
| Slew Rate | 350V/µs (+3V supply): enables full-scale 1V step response within <3ns, critical for fast transient fidelity. |
| SFDR | 88dBc at 5MHz (RL = 300Ω): ensures minimal harmonic/intermodulation distortion in wideband ADC front-ends. |
| Quiescent Current | 20mA per amplifier: balances high-speed performance with moderate power in dual-channel systems. |
| Input Common-Mode Range | Extends to VEE (ground in single-supply): allows DC-coupled, ground-referenced sensor or DAC output buffering. |
| Output Drive | –106mA sink / +77mA source (RL = 20Ω): drives low-impedance, dynamic ADC inputs without external buffers. |
| Settling Time | 6ns to 0.1% (1V step): meets timing budgets for high-MSPS ADCs requiring sub-10ns acquisition windows. |
Pinout & Package
MAX4287ESA+T is housed in an 8-pin SO (Small Outline) package, compliant with JEDEC MS-012AA, with standard SOIC lead pitch (1.27mm) and body dimensions (4.9mm × 3.9mm × 1.75mm). Pin 1 is marked by a beveled corner or dot.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA– | Inverting input of Amplifier A; connects to feedback network in inverting configurations. |
| 2 | INA+ | Noninverting input of Amplifier A; accepts single-ended or differential input signals. |
| 3 | OUTA | Amplifier A output; drives ADC input or next-stage circuitry with low-impedance, high-current capability. |
| 4 | VEE | Negative supply or ground; defines lower rail for input common-mode and output swing range. |
| 5 | VCC | Positive supply (2.85V–6.5V); powers both amplifiers and sets upper output voltage limit. |
| 6 | INB+ | Noninverting input of Amplifier B; electrically isolated from Amplifier A for dual independent channels. |
| 7 | INB– | Inverting input of Amplifier B; used for matched gain-setting in dual-channel ADC front-ends. |
| 8 | OUTB | Amplifier B output; provides second buffered channel without shared resources or crosstalk degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual unity-gain stable amplifiers | Internally compensated for AV ≥ +1V/V-eliminates external compensation components in most ADC buffer layouts. |
| Rail-to-rail input (to VEE) | Accepts input signals down to ground in single-supply systems, simplifying level-shifting for sensor interfaces. |
| High-output current drive | ±106mA peak sink/source enables direct driving of 50Ω transmission lines or low-Z ADC inputs without loss of linearity. |
| Low distortion at 5MHz | 88dBc SFDR ensures <–88dB harmonic content relative to fundamental-critical for ENOB preservation in 14-bit ADCs. |
| Fast 6ns settling (0.1%) | Meets tight acquisition-time requirements of 100MSPS+ ADCs, reducing dead time between samples. |
Applications
| Communications Baseband Processing | High-Speed Data Acquisition Systems |
|---|---|
|
Use Scenario: Conditioning I/Q baseband signals prior to digitization in LTE/5G radio transceivers. IC Role / Device Role / Timing Role: Dual-channel ADC driver providing matched gain, phase, and settling across I and Q paths. Use Value: 85dBc crosstalk (f = 10MHz) and 6ns settling ensure <0.05° phase mismatch and <0.1LSB amplitude error at 100MSPS. |
Use Scenario: Buffering outputs of precision DACs or sensor front-ends feeding multi-channel simultaneous-sampling ADCs. IC Role / Device Role / Timing Role: Dual independent unity-gain follower minimizing loading effects on sensitive sources. Use Value: Rail-to-rail input (to VEE) and 20mA quiescent current per channel enable low-power, ground-referenced signal chain design. |
| Ultrasound Beamforming Front-End | CCD Imaging Signal Chain |
|
Use Scenario: Driving multiplexed ADC inputs in portable ultrasound systems with >40dB dynamic range requirements. IC Role / Device Role / Timing Role: High-linearity, low-noise buffer isolating analog beamformer outputs from ADC input capacitance. Use Value: 10nV/√Hz input voltage noise and 88dBc SFDR preserve SNR across 1–20MHz medical imaging bands. |
Use Scenario: Amplifying low-level, high-impedance CCD pixel outputs before correlated double sampling (CDS). IC Role / Device Role / Timing Role: Low-input-bias-current (0.2µA max), fast-settling buffer minimizing charge injection and pedestal error. Use Value: 2pF input capacitance and 6ns settling support CDS timing windows <10ns while maintaining <0.1% gain error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4288ESA+ | Includes dual active-low DISABLEA/DISABLEB pins; same 250MHz BW, but adds 50ns disable time and 1mA disabled current. | Required where channel-level power gating or multiplexing is needed; not drop-in due to extra control pins. | Select MAX4288ESA+ only if high-impedance output state during idle periods is mandatory for system-level power or signal routing. |
| AD8022ARZ | 2.2nV/√Hz input voltage noise (vs. 10nV/√Hz), 130MHz BW, no disable, SO-8 package; requires ±5V or +5V supply only. | Better noise performance for low-level signal amplification; narrower bandwidth limits use in >80MSPS ADCs. | Prefer AD8022ARZ when ultra-low noise dominates over bandwidth-e.g., precision instrumentation with <50MSPS sampling. |
Compared with MAX4288ESA+, MAX4287ESA+ offers simpler control (no disable logic) and lower layout complexity, while AD8022ARZ trades bandwidth for superior noise floor-making MAX4287ESA+ optimal for cost-sensitive, high-MSPS, dual-channel ADC buffering where disable is unnecessary.
Availability
MAX4287ESA+T is available at Aetrix Electronics and suitable for high-speed data acquisition, communications infrastructure, and medical ultrasound systems requiring stable component supply, consistent parametric performance across temperature (–40°C to +85°C), and long-term industrial-grade availability.
Supply support for MAX4287ESA+T 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 high-performance analog and mixed-signal ICs for demanding signal-chain, power, and interface applications.
The MAX4285–MAX4288 family targets high-speed ADC driver applications, emphasizing bandwidth, settling speed, and distortion performance in compact packages for space-constrained, high-density PCBs.
FAQ
What is the supply voltage range supported by the MAX4287ESA+T?
The MAX4287ESA+T operates from a single +2.85V to +6.5V supply or dual ±1.425V to ±3.25V supplies. At +3V operation, it delivers full 250MHz bandwidth and 350V/µs slew rate. The input common-mode range extends to VEE (ground in single-supply mode), and the output swing is specified from VEE + 0.4V to VCC – 0.4V. This makes MAX4287ESA+T compatible with modern low-voltage ADCs and mixed-signal SoCs.
Does the MAX4287ESA+T have a disable function?
No, the MAX4287ESA+T does not include a disable feature. Unlike the MAX4288ESA+ or MAX4388 variants, it has no DISABLEA or DISABLEB pins. Its pinout consists solely of dual amplifier inputs/outputs and power rails (VEE, VCC). Therefore, MAX4287ESA+T remains continuously active-ideal for always-on ADC front-ends where power gating is handled externally or not required. This simplifies PCB routing and eliminates enable/disable timing constraints.
What is the typical SFDR performance of the MAX4287ESA+T at 5MHz?
The MAX4287ESA+T achieves a typical spurious-free dynamic range (SFDR) of 88dBc at fC = 5MHz, measured with VCC = +3V, RL = 300Ω to VCC/2, VCM = 1V, and AVCL = +1V/V. This value reflects the ratio of fundamental signal power to the strongest harmonic or intermodulation product, confirming its suitability for 14-bit ADC drivers where distortion must remain below –88dB relative to full-scale. Performance holds across the –40°C to +85°C operating range.
Can the MAX4287ESA+T drive a 50Ω transmission line directly?
Yes, the MAX4287ESA+T can drive a 50Ω load directly: its output delivers –106mA sink and +77mA source current into 20Ω loads, far exceeding the ±10mA required for a 50Ω line at ±0.5V swing. However, for optimal stability and minimal ringing with reactive loads (e.g., PCB traces + ADC input capacitance), Maxim recommends adding a 20Ω–30Ω isolation resistor in series with the output-especially when driving >5pF capacitive loads. This preserves the 6ns settling and 250MHz bandwidth of MAX4287ESA+T.
What package type is used for the MAX4287ESA+T?
The MAX4287ESA+T uses an 8-pin SO (Small Outline) package, also referred to as SOIC-N or SOIC-8, per JEDEC MS-012AA. It features a 1.27mm lead pitch, 4.9mm × 3.9mm body size, and gull-wing leads suitable for reflow soldering. This package is pin-compatible with industry-standard op amps and supports automated assembly. The "ESA" suffix explicitly denotes the 8-pin SO variant-distinct from the µMAX (EUA) version of the same device.
MAX4287ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4287ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4287ESA+T 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+T reliable?
The price and inventory of MAX4287ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4287ESA+T is usually 5 days.
3.What payment methods are accepted for MAX4287ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4287ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4287ESA+T?
MAX4287ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4287ESA+T 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+T?
For technical support, including MAX4287ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4287ESA+T requirements.
6.How does Aetrix verify that MAX4287ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4287ESA+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX4287ESA+T?
All MAX4287ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4287ESA+T, 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+T part is unused and in its original packaging.
Return procedure for MAX4287ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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