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Analog Devices Inc./Maxim Integrated MAX4437EUA
- Part No.:
- MAX4437EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4437EUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,929
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Product details
Overview
The MAX4437EUA from Maxim Integrated is a dual, high-speed, voltage-feedback operational amplifier optimized for driving 14- and 16-bit analog-to-digital converters (ADCs). It features 150MHz small-signal -3dB bandwidth, 23ns 16-bit (0.0015%) settling time at closed-loop gain ≥+5, 388V/µs slew rate, and ultra-low 2.2nV/√Hz input voltage noise density - enabling high-fidelity signal conditioning in precision data acquisition systems.
For engineers reviewing the MAX4437EUA datasheet, MAX4437EUA pinout, MAX4437EUA application, or MAX4437EUA equivalent, this page delivers verified technical context, package-specific pin mapping, real-world application cards, and two validated alternative op amps with documented functional and architectural differences.
Technical Context
The MAX4437EUA implements a voltage-feedback architecture with internal compensation for stable operation at closed-loop gains of +5 V/V or greater. Its 150MHz bandwidth and 388V/µs slew rate support fast transient response required for ADC input buffering, while its 97dB spurious-free dynamic range (SFDR) at 1MHz with 4VP-P output ensures minimal harmonic distortion in high-resolution sampling.
Designed for single-supply operation (VCC = +4.5V to +5.5V, VEE = 0V), it delivers rail-to-rail output swing capability (within 200mV of VCC and 70mV of VEE at RL = 10kΩ) and 65mA output drive current - enabling direct interface with capacitive ADC inputs and resistive loads without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal -3dB Bandwidth | 150MHz - supports wideband signal conditioning up to Nyquist frequency of >70MSPS ADCs |
| 16-Bit Settling Time | 23ns (0.0015%) - meets timing budget for 43MSPS+ sampling rates in 16-bit systems |
| Slew Rate | 388V/µs - enables full-scale step response without slewing-induced distortion |
| Input Voltage Noise Density | 2.2nV/√Hz - preserves SNR in low-amplitude, high-resolution sensor front-ends |
| Spurious-Free Dynamic Range | 97dBc at 1MHz, 4VP-P - minimizes intermodulation distortion in IF/RF receiver chains |
| Open-Loop Gain | 115dB - ensures <0.001% gain error in precision closed-loop configurations |
| Output Drive Current | ±65mA - directly drives 50Ω transmission lines or heavy capacitive ADC inputs |
Pinout & Package
MAX4437EUA is housed in an 8-pin µMAX® package (package code U8-1), a compact 3mm × 3mm surface-mount package with exposed thermal pad, RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - connects to ADC input or filter network; requires local 0.1µF bypass to ground |
| 2 | INA− | Inverting input of Amplifier A - high-impedance node; sensitive to layout parasitics and stray capacitance |
| 3 | INA+ | Noninverting input of Amplifier A - referenced to system common-mode voltage (typically VCC/2) |
| 4 | VEE | Ground reference - must connect to low-impedance ground plane; shared return for both amplifiers |
| 5 | INB+ | Noninverting input of Amplifier B - independent signal path; supports dual-channel simultaneous sampling |
| 6 | INB− | Inverting input of Amplifier B - matched to INA− for consistent AC performance across channels |
| 7 | OUTB | Amplifier B output - electrically isolated from OUTA; crosstalk ≤−80dB at 1MHz ensures channel independence |
| 8 | VCC | Positive supply - requires 1nF ceramic + 10µF tantalum bypassing; sensitive to supply ripple above 100kHz |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 23ns | Enables use with 43MSPS+ 16-bit ADCs without external sample-hold circuitry |
| 97dB SFDR at 1MHz, 4VP-P | Meets spectral purity requirements for communications receivers and instrumentation digitizers |
| 2.2nV/√Hz input voltage noise | Preserves ENOB in sub-100µVRMS sensor signals when gain ≥+5 is applied |
| 65mA output drive | Directly drives 50Ω coaxial traces or 10–20pF ADC input capacitance without series isolation resistor |
| 8-pin µMAX package | Reduces PCB area by >50% vs. SO-8; thermal pad improves power dissipation for sustained 15mA per amplifier |
Applications
| High-Speed ADC Preamplifier | IF/RF Signal Conditioning |
|---|---|
Use Scenario: Driving the analog input of a 16-bit, 50MSPS pipeline ADC in a software-defined radio front-end. IC Role / Device Role / Timing Role: High-fidelity buffer and level shifter; provides precise 2.0VPP differential input with <23ns settling to maintain ENOB ≥15.2 bits. Use Value: Eliminates need for discrete gain stages or external clamping diodes due to rail-to-rail output swing and ±65mA drive. |
Use Scenario: Amplifying 70MHz IF signals before quadrature demodulation in a cellular base station receiver. IC Role / Device Role / Timing Role: Low-distortion gain block with 150MHz bandwidth and 97dB SFDR; maintains EVM integrity under 16-QAM modulation. Use Value: Replaces legacy current-feedback amplifiers without sacrificing stability or requiring layout redesign. |
| Low-Distortion Active Filter | Precision Instrumentation Amplifier Stage |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a 14-bit SAR ADC in medical EEG acquisition. IC Role / Device Role / Timing Role: Dual-channel filter section; one amplifier as unity-gain buffer, second as gain-of-5 active topology with matched components. Use Value: Achieves <−90dB THD+N at 10kHz due to ultra-low 2.2nV/√Hz noise and symmetric slew capability. |
Use Scenario: Front-end gain stage for a thermocouple amplifier with cold-junction compensation, feeding a 16-bit ΣΔ ADC. IC Role / Device Role / Timing Role: Precision noninverting amplifier (G = +5) with 0.25mV input offset matching between channels for differential sensing. Use Value: Delivers <0.001% gain drift over −40°C to +85°C using matched internal transistor pairs and low TCVOS (4µV/°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-distortion op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8009ARZ | Single-channel, 1GHz GBW, 5500V/µs slew rate; higher power (12mA vs. 15mA per amp), no internal gain compensation | Better suited for >100MHz RF gain blocks but requires external compensation; not pin-compatible | Select AD8009ARZ only when >500MHz bandwidth is mandatory and layout allows custom compensation network |
| LMH6629MA/NOPB | Dual-channel, 720MHz GBW, 3000V/µs slew rate; 1.9nV/√Hz noise; requires external gain-setting resistors for stability | Superior noise and speed, but lacks internal +5V/V compensation - demands careful feedback network design | Choose LMH6629MA/NOPB for ultra-low-noise IF amplification where board space permits precision resistor placement |
Compared with MAX4437EUA, AD8009ARZ offers higher bandwidth at the cost of stability complexity and single-channel limitation, while LMH6629MA/NOPB delivers lower noise and faster slew but requires external compensation - making MAX4437EUA the optimal choice for drop-in replacement in +5V/V ADC driver designs with strict layout constraints.
Availability
MAX4437EUA is available at Aetrix Electronics and suitable for high-speed data acquisition, communications infrastructure, and precision instrumentation requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX4437EUA 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, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
The MAX4434–MAX4437 family was designed specifically to address the signal integrity challenges of modern high-speed ADC interfaces - delivering unity- or fixed-gain-stable amplifiers with ultra-low distortion, fast settling, and robust capacitive load drive.
FAQ
What is the minimum stable closed-loop gain for MAX4437EUA?
The MAX4437EUA is internally compensated for stable operation at closed-loop gains of +5 V/V or greater. Attempting to use it at gains below +5 may result in peaking, ringing, or oscillation due to insufficient phase margin. This differs from the MAX4436EUA, which is unity-gain stable. Always verify stability with actual load conditions and PCB layout.
Can MAX4437EUA drive a 20pF capacitive load directly?
Yes, the MAX4437EUA can drive up to 30pF capacitive load without sustained oscillations, as specified in the datasheet. For a 20pF ADC input, no series isolation resistor is required. However, if ringing is observed in prototype testing, adding a 5Ω–20Ω resistor in series with the output improves phase margin while introducing negligible gain error (<0.1%).
What is the maximum supply voltage for MAX4437EUA?
The absolute maximum supply voltage (VCC – VEE) for MAX4437EUA is +6V. The recommended operating range is +4.5V to +5.5V, guaranteed by PSRR testing. Operation outside this range risks degraded AC performance, increased quiescent current, or permanent damage - especially beyond +6V or below −0.3V on any pin.
Does MAX4437EUA support true rail-to-rail output swing?
MAX4437EUA achieves near rail-to-rail output swing: within 200mV of VCC and 70mV of VEE at RL = 10kΩ. At heavier loads (e.g., RL = 500Ω), swing degrades to ~350mV from each rail. It does not reach true 0V–5V swing but provides sufficient headroom for most 16-bit ADC references centered at VCC/2.
How does MAX4437EUA differ from MAX4436EUA?
MAX4437EUA and MAX4436EUA share the same 8-pin µMAX package and dual-amplifier topology, but differ in internal compensation: MAX4437EUA is optimized for closed-loop gains ≥+5 (23ns settling), while MAX4436EUA is unity-gain stable (35ns settling). Their pinouts are identical, but substituting one for the other without adjusting gain configuration will cause instability or degraded settling performance.
MAX4437EUA 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 388V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 150 MHz
- Current - Input Bias:
- 14 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 15mA (x2 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4437EUA FAQ
1.How can I place an order for MAX4437EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4437EUA 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 MAX4437EUA reliable?
The price and inventory of MAX4437EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4437EUA is usually 5 days.
3.What payment methods are accepted for MAX4437EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4437EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4437EUA?
MAX4437EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4437EUA 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 MAX4437EUA?
For technical support, including MAX4437EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4437EUA requirements.
6.How does Aetrix verify that MAX4437EUA is sourced from the original manufacturer or authorized distributors?
All MAX4437EUA 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 MAX4437EUA meets industry standards.
7.What is the process for return or replacement of MAX4437EUA?
All MAX4437EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4437EUA, 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 MAX4437EUA part is unused and in its original packaging.
Return procedure for MAX4437EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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