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Analog Devices Inc./Maxim Integrated MAX4387ESA
- Part No.:
- MAX4387ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4387ESA.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
MAX4387ESA from Maxim Integrated is a dual, high-speed, voltage-feedback operational amplifier optimized as an ADC input buffer for communications and instrumentation systems. It operates from a single +2.85V to +6.5V supply, delivers 150MHz −3dB bandwidth (at gain = +5V/V), 350V/µs slew rate, 88dBc SFDR at 5MHz, and −106mA/+77mA output drive - enabling robust driving of high-resolution, high-sample-rate ADCs.
For engineers reviewing the MAX4387ESA datasheet, MAX4387ESA pinout, MAX4387ESA application, or MAX4387ESA equivalent, key selection criteria include its fixed +5V/V minimum stable gain, absence of disable functionality, dual-channel 8-pin µMAX/SO packaging, and suitability for multiplexed or low-distortion analog front-end designs requiring rail-to-rail input common-mode range down to VEE.
Technical Context
The MAX4387ESA is internally compensated for stable operation only at closed-loop gains ≥ +5V/V - unlike unity-gain-stable variants (e.g., MAX4287). Its voltage-feedback architecture supports fast settling (6ns to 0.1%) and low distortion across wide dynamic ranges, with input common-mode voltage extending to the negative rail (VEE) in single-supply configurations.
It features matched dual amplifiers in one package, with independent inputs and outputs but no per-amplifier disable control - distinguishing it from the MAX4388ESA (which includes DISABLEA/DISABLEB pins). DC performance includes ±0.2mV input offset voltage matching and 73dB CMRR over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 150MHz at AV = +5V/V - ensures signal fidelity up to Nyquist frequency of 75MSPS ADCs |
| Slew Rate | 350V/µs - supports full-scale step response without slewing-induced distortion in fast-settling ADC drivers |
| SFDR | 88dBc at fC = 5MHz - meets dynamic range requirements for 14-bit+ ADCs in baseband receivers |
| Output Drive | −106mA sink / +77mA source - directly drives low-impedance ADC inputs (e.g., 50Ω terminated) without external buffers |
| Input Common-Mode Range | Extends to VEE (ground in single-supply) - enables DC-coupled sensor or DAC interface without level-shifting circuitry |
| Quiescent Current | 24mA per amplifier (typ. at VCC = 5V) - balances speed and power for portable or thermally constrained instrumentation |
| Settling Time | 6ns to 0.1% - satisfies timing budget for >100MSPS sampling with minimal aperture jitter contribution |
Pinout & Package
MAX4387ESA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height) and also available in 8-pin SO. The µMAX package provides compact footprint and thermal performance suitable for space-constrained PCB layouts in high-density signal chains.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input of Amplifier A - connects to feedback network in inverting configurations or termination resistor in differential ADC interfaces |
| 2 | INA+ | Noninverting input of Amplifier A - accepts single-ended or differential reference signals; rail-to-rail input capability simplifies biasing |
| 3 | OUTA | Output of Amplifier A - drives ADC input directly; output impedance <0.5Ω ensures minimal signal degradation into 50–300Ω loads |
| 4 | VEE | Negative supply or ground - must be connected to system ground in single-supply operation; serves as common return for both amplifiers |
| 5 | VCC | Positive supply (2.85V–6.5V) - requires local 0.1nF + 0.1µF bypassing to suppress high-frequency supply noise coupling into analog path |
| 6 | INB− | Inverting input of Amplifier B - electrically isolated from Amplifier A; enables dual-channel simultaneous sampling front-ends |
| 7 | INB+ | Noninverting input of Amplifier B - identical electrical characteristics to INA+; supports matched gain/phase response across channels |
| 8 | OUTB | Output of Amplifier B - independently routable; allows time-interleaved or I/Q channel buffering without crosstalk penalty (−85dBc @ 10MHz) |
Key Features
| Feature | Design Value |
|---|---|
| +5V/V Minimum Stable Gain | Guarantees stability without external compensation - eliminates risk of oscillation when driving capacitive ADC inputs at target bandwidth |
| Rail-to-Rail Input Common-Mode Range | Supports direct connection to ground-referenced sensors or DAC outputs without level-shifting components or bias networks |
| Low 2pF Input Capacitance | Minimizes interaction with PCB trace capacitance and feedback resistors - preserves phase margin and avoids unintended peaking |
| Matched Dual Amplifiers | Ensures consistent gain, offset, and timing between channels - critical for I/Q demodulation, differential sampling, and multi-channel data acquisition |
| High PSRR (50dB) | Maintains signal integrity in noisy mixed-signal environments - reduces sensitivity to digital supply ripple coupling into analog signal path |
Applications
| Communications Baseband Receiver | Ultrasound Beamforming Front-End |
|---|---|
Use Scenario: Conditioning I/Q analog signals prior to digitization in LTE/5G transceivers with 12–14-bit, 100MSPS ADCs. IC Role / Device Role / Timing Role: Dual-channel ADC driver providing matched gain, phase, and settling for coherent quadrature sampling. Use Value: 88dBc SFDR at 5MHz enables >12.5 ENOB at Nyquist, meeting 3GPP ACLR requirements without post-processing correction. |
Use Scenario: Buffering time-delayed echo signals from phased-array transducers before digitization in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, fast-settling dual op-amp delivering synchronized analog paths for beam-steering precision. Use Value: 6ns settling time and 150MHz bandwidth preserve transient fidelity of microsecond-scale echo pulses across 128+ channels. |
| High-Speed Data Acquisition System | CCD Imaging Signal Chain |
Use Scenario: Driving dual 16-bit, 50MSPS ADCs in industrial oscilloscopes or automated test equipment with real-time waveform capture. IC Role / Device Role / Timing Role: Precision dual buffer isolating ADC inputs from multiplexer switching transients and maintaining channel-to-channel skew <10ps. Use Value: −85dBc crosstalk at 10MHz prevents inter-channel interference during simultaneous sampling of high-frequency signals. |
Use Scenario: Amplifying low-level, low-noise CCD output signals in scientific imaging cameras requiring 16-bit dynamic range and sub-electron read noise. IC Role / Device Role / Timing Role: Low-distortion, low-input-bias-current dual amplifier interfacing CCD charge-domain output to correlated double sampling (CDS) circuitry. Use Value: 0.2µA max input bias current minimizes dark current injection; 10nV/√Hz input voltage noise preserves SNR in photon-starved conditions. |
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 |
|---|---|---|---|
| MAX4287ESA | Unity-gain stable (AV ≥ +1V/V), same 250MHz bandwidth, no disable function - differs in gain stability requirement and bandwidth profile | Preferred for variable-gain or unity-gain ADC driver stages where flexibility in closed-loop configuration is required | Select MAX4287ESA when gain may vary below +5V/V; MAX4387ESA is optimal only for fixed +5V/V or higher gain topologies |
| AD8021ARMZ | Single 200MHz op-amp (SO-8), unity-gain stable, 2.2nV/√Hz noise, no disable, 100mA output drive - different channel count and noise floor | Suitable for single-channel, ultra-low-noise applications where dual-channel integration is not mandatory | Choose AD8021ARMZ for lower noise-critical single-channel use; MAX4387ESA provides matched dual-channel performance with higher drive and better SFDR |
Compared with MAX4287ESA and AD8021ARMZ, the MAX4387ESA trades unity-gain stability and lower noise for guaranteed +5V/V stability, higher output current, and superior spurious-free dynamic range - making it the preferred choice for fixed-gain, high-fidelity dual-channel ADC driving where distortion and channel matching dominate design constraints.
Availability
MAX4387ESA is available at Aetrix Electronics and suitable for high-speed data acquisition, medical ultrasound front-ends, and communications baseband receiver designs requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for MAX4387ESA 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 precision, power, and interface applications.
The MAX4285–MAX4388 family was designed specifically for demanding ADC driver roles in communications, instrumentation, and medical imaging - emphasizing speed, linearity, and channel matching over general-purpose op-amp versatility.
FAQ
What is the minimum stable gain for MAX4387ESA?
The MAX4387ESA is internally compensated for stable operation only at closed-loop gains of +5V/V or greater. Attempting to use it at lower gains (e.g., unity or +2V/V) risks instability, peaking, or oscillation due to insufficient phase margin - unlike the MAX4287ESA, which is unity-gain stable. Designers must verify gain configuration against the "Minimum Gain" column in the Selector Guide.
Does MAX4387ESA include a disable function?
No, the MAX4387ESA does not feature a disable input. It lacks the DISABLEA and DISABLEB pins present on the pin-compatible MAX4388ESA. The MAX4387ESA operates continuously when powered; power-down functionality requires external supply switching or series FETs. This distinguishes it from the MAX4388ESA and MAX4288ESA, which support 40ns enable/50ns disable transitions.
What package options are available for MAX4387ESA?
The MAX4387ESA is offered in two industry-standard packages: 8-pin µMAX (3mm × 3mm, 0.8mm height) and 8-pin SO (SOIC). Both share identical pinout and electrical specifications. The µMAX variant is preferred for space-constrained PCBs in portable or high-density instrumentation, while the SO package supports legacy assembly and manual prototyping.
Can MAX4387ESA drive a 50Ω load effectively?
Yes, the MAX4387ESA delivers −106mA sink and +77mA source current, enabling direct drive of 50Ω terminated lines typical in high-speed ADC interfaces. Its linear output range extends from (VEE + 0.4V) to (VCC − 0.4V), supporting ±2V swing on ±2.5V supplies or 0–4V on +5V supplies - sufficient for most 12–16-bit ADC reference levels without external level-shifting.
How does MAX4387ESA compare to MAX4287ESA in terms of bandwidth and application fit?
The MAX4387ESA offers 150MHz −3dB bandwidth at +5V/V gain, while the MAX4287ESA delivers 250MHz at +1V/V. Their bandwidth profiles diverge by design intent: MAX4387ESA targets fixed high-gain ADC buffering with superior distortion performance (88dBc SFDR), whereas MAX4287ESA prioritizes flexibility in gain configuration. Use MAX4387ESA when gain ≥ +5V/V is fixed and SFDR is critical; choose MAX4287ESA for variable or unity-gain stages.
MAX4387ESA 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:
- 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:
- 8-SOIC
MAX4387ESA FAQ
1.How can I place an order for MAX4387ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4387ESA 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 MAX4387ESA reliable?
The price and inventory of MAX4387ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4387ESA is usually 5 days.
3.What payment methods are accepted for MAX4387ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4387ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4387ESA?
MAX4387ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4387ESA 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 MAX4387ESA?
For technical support, including MAX4387ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4387ESA requirements.
6.How does Aetrix verify that MAX4387ESA is sourced from the original manufacturer or authorized distributors?
All MAX4387ESA 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 MAX4387ESA meets industry standards.
7.What is the process for return or replacement of MAX4387ESA?
All MAX4387ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4387ESA, 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 MAX4387ESA part is unused and in its original packaging.
Return procedure for MAX4387ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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