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Analog Devices Inc./Maxim Integrated MAX4437EUA+T
- Part No.:
- MAX4437EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4437EUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,595
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Product details
Overview
MAX4437EUA+T from Maxim Integrated is a dual, high-speed, voltage-feedback operational amplifier optimized for driving 14- and 16-bit ADCs. It delivers 16-bit accurate settling in 23ns, 150MHz small-signal -3dB bandwidth at closed-loop gain ≥+5, 388V/µs slew rate, 2.2nV/√Hz input voltage noise density, and 65mA output drive capability in an 8-pin µMAX package.
For engineers reviewing the MAX4437EUA+T datasheet, MAX4437EUA+T pinout, MAX4437EUA+T application, or MAX4437EUA+T equivalent, this page provides verified electrical specifications, dual-amplifier pin mapping, low-distortion ADC driver use cases, and validated alternative op amps for high-resolution data acquisition systems.
Technical Context
The MAX4437EUA+T employs a voltage-feedback architecture with internal compensation for stable operation at closed-loop gains of +5 V/V or greater. Its design targets high-fidelity signal conditioning where fast settling, ultra-low harmonic distortion, and wide output swing are critical - especially when interfacing with switched-capacitor inputs of modern high-speed ADCs.
It operates from a single +4.5V to +5.5V supply, achieves 97dB spurious-free dynamic range (SFDR) at 1MHz with 4VP-P output, and maintains 115dB open-loop gain while consuming only 15mA per amplifier. The dual-channel layout supports independent signal paths with -80dB crosstalk at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal -3dB bandwidth | 150MHz at AVCL = +5 - enables full-power bandwidth for >75MSPS ADC sampling clocks |
| 16-bit settling time | 23ns to 0.0015% - ensures accurate capture of fast-transient analog signals before ADC conversion |
| Slew rate | 388V/µs - supports large-signal fidelity up to 4VP-P without slewing-induced distortion |
| Input voltage noise density | 2.2nV/√Hz - preserves SNR in precision front-end stages feeding 16-bit converters |
| Output drive current | ±65mA - drives heavy loads including 50Ω transmission lines and ADC input capacitance directly |
| Spurious-free dynamic range | -97dBc at 1MHz, 4VP-P - meets SFDR requirements for LTE/WiFi IF receivers and instrumentation |
| Open-loop gain | 115dB typical - provides high DC accuracy and loop stability margin in precision gain stages |
Pinout & Package
The MAX4437EUA+T is housed in an 8-pin µMAX® package (package code U8-1), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal performance. It is RoHS-compliant and lead(Pb)-free, indicated by the '+' suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives first signal path; requires local 0.1µF bypass to ground |
| 2 | INA− | Amplifier A inverting input - connects to feedback network; sensitive to parasitic capacitance |
| 3 | INA+ | Amplifier A noninverting input - high-impedance node; must match INA− trace length for CMRR |
| 4 | VEE | Ground reference - connects to low-impedance ground plane; shared return for both amplifiers |
| 5 | INB+ | Amplifier B noninverting input - independent second channel; routed separately to avoid coupling |
| 6 | INB− | Amplifier B inverting input - used for differential gain configuration or single-ended feedback |
| 7 | OUTB | Amplifier B output - isolated routing recommended to prevent crosstalk with OUTA |
| 8 | VCC | Positive supply - bypassed with 1nF ceramic + 10µF tantalum; shared rail for both amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling | 23ns to 0.0015% error - eliminates timing guard bands in high-throughput ADC systems |
| Low-noise voltage feedback | 2.2nV/√Hz input voltage noise - avoids degrading ENOB of 16-bit ADCs in baseband stages |
| High-output current drive | ±65mA per amplifier - eliminates need for external buffer stages when driving 50Ω or capacitive loads |
| Ultra-low distortion | 97dB SFDR at 1MHz - satisfies spectral purity requirements in IF/RF receiver chains |
| Dual-channel isolation | -80dB crosstalk at 1MHz - enables simultaneous dual-channel acquisition without inter-channel interference |
Applications
| High-Speed ADC Preamplifier | IF Amplifier |
|---|---|
|
Use Scenario: Driving the switched-capacitor input of a 16-bit, 100MSPS pipeline ADC in a software-defined radio front end. IC Role / Device Role / Timing Role: Precision, low-glitch voltage buffer that settles within 23ns to maintain full ENOB across full-scale transitions. Use Value: Enables direct coupling to ADC without external RC filtering, preserving bandwidth and reducing component count. |
Use Scenario: Amplifying 70MHz IF signals in a cellular base station receiver prior to quadrature demodulation. IC Role / Device Role / Timing Role: High-linearity, wide-bandwidth gain stage operating at +5V single supply with minimal group delay variation. Use Value: Delivers -97dBc SFDR at 1MHz offset, meeting adjacent-channel rejection specs for LTE FDD uplink. |
| 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 automated test equipment. IC Role / Device Role / Timing Role: Dual-op-amp topology providing matched gain and phase response across two filter sections. Use Value: Achieves <−80dB THD+N at 100kHz with 2VP-P output, eliminating harmonic aliasing into Nyquist band. |
Use Scenario: Conditioning low-level thermocouple or strain-gauge signals in a medical-grade patient monitor. IC Role / Device Role / Timing Role: Low-noise, high-PSRR preamplifier stage with 115dB open-loop gain for precise DC-coupled gain control. Use Value: 2.2nV/√Hz noise and 110dB PSRR suppress power supply ripple and thermal EMF errors below 16-bit LSB. |
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, 5,500V/µs slew rate, higher quiescent current (16mA vs. 15mA) | Better for >500MHz small-signal applications but lacks dual-channel integration and 16-bit settling spec | Choose AD8009ARZ when single-channel bandwidth >500MHz is required and board space allows separate dual placement |
| LMH6629MA/NOPB | Dual-channel, 720MHz GBW, 3,500V/µs slew rate, higher noise (2.9nV/√Hz), no guaranteed 16-bit settling spec | Higher speed but lower DC precision; not characterized for 0.0015% settling time | Choose LMH6629MA/NOPB for applications prioritizing raw bandwidth over guaranteed 16-bit settling accuracy |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4437EUA+T uniquely guarantees 23ns 16-bit settling and 97dB SFDR in a dual-channel µMAX package - making it the only option qualified for time-critical, dual-path, high-resolution ADC driver designs without additional characterization overhead.
Availability
MAX4437EUA+T is available at Aetrix Electronics and suitable for high-speed data acquisition systems, IF receiver signal chains, and precision instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4437EUA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4434–MAX4437 family was designed specifically to address the signal integrity challenges of driving modern 14- and 16-bit ADCs - delivering guaranteed 16-bit settling, ultra-low distortion, and robust capacitive-load drive in compact packages.
FAQ
What is the minimum stable closed-loop gain for the MAX4437EUA+T?
The MAX4437EUA+T is internally compensated for stable operation at closed-loop gains of +5 V/V or greater. Attempting to use it at unity gain or gains below +5 may result in oscillation or degraded phase margin. This differs from the MAX4436EUA+T, which is unity-gain stable. Always verify stability with actual load conditions and PCB layout.
Does the MAX4437EUA+T support single-supply operation?
Yes, the MAX4437EUA+T is explicitly designed for single-supply operation from +4.5V to +5.5V, with input common-mode voltage range extending from VEE (ground) to VCC − 1V and rail-to-rail output swing capability. Its input stage operates down to ground, enabling true single-supply signal conditioning without level-shifting circuitry.
Can the MAX4437EUA+T drive a 50Ω transmission line directly?
Yes - the MAX4437EUA+T delivers ±65mA output current and is characterized to drive 50Ω loads with minimal distortion. When driving 50Ω, use series output termination (e.g., 25Ω resistor) to match source impedance and minimize reflections. Avoid back-termination unless signal integrity analysis confirms its necessity.
What is the maximum capacitive load the MAX4437EUA+T can drive without instability?
The MAX4437EUA+T remains stable with up to 30pF capacitive load without external compensation. For loads exceeding 30pF, add a small isolation resistor (e.g., 10–50Ω) in series with the output to restore phase margin. Performance graphs in the datasheet show output isolation resistance vs. capacitive load for precise selection.
Is the MAX4437EUA+T pin-compatible with other devices in the MAX443x family?
No - the MAX4437EUA+T uses an 8-pin µMAX package with dual-amplifier pinout (OUTA, INA−, INA+, VEE, INB+, INB−, OUTB, VCC), which differs from the 5-pin SOT23 layout of MAX4435 and the 8-pin SO layout of MAX4437ESA. Pin compatibility exists only between identical package variants (e.g., MAX4437EUA+T and MAX4437ESA share functionally equivalent pin assignments but differ in footprint).
MAX4437EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4437EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4437EUA+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 MAX4437EUA+T reliable?
The price and inventory of MAX4437EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4437EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4437EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4437EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4437EUA+T?
MAX4437EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4437EUA+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 MAX4437EUA+T?
For technical support, including MAX4437EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4437EUA+T requirements.
6.How does Aetrix verify that MAX4437EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4437EUA+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 MAX4437EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4437EUA+T?
All MAX4437EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4437EUA+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 MAX4437EUA+T part is unused and in its original packaging.
Return procedure for MAX4437EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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