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Analog Devices Inc./Maxim Integrated MAX4435EUK
- Part No.:
- MAX4435EUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4435EUK.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,458
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Product details
Overview
The MAX4435EUK from Maxim Integrated is a single, high-speed, voltage-feedback operational amplifier optimized for +5V closed-loop gain stability, delivering 150MHz small-signal bandwidth, 23ns 16-bit (0.0015%) settling time, and 388V/µs slew rate. It features ultra-low 2.2nV/√Hz input voltage noise and 97dB SFDR at 1MHz with 4Vp-p output - making it ideal for driving precision 14- and 16-bit ADCs in high-speed data acquisition systems.
For engineers reviewing the MAX4435EUK datasheet, MAX4435EUK pinout, MAX4435EUK application, or MAX4435EUK equivalent, key selection considerations include its +5V minimum stable gain requirement, SOT23-5 package constraints, 15mA quiescent current per amplifier, and capacitive-load drive capability up to 30pF without sustained oscillation.
Technical Context
The MAX4435EUK employs a voltage-feedback architecture with internal compensation tailored for closed-loop gains ≥ +5V/V, distinguishing it from unity-gain-stable variants like the MAX4434. Its 150MHz small-signal -3dB bandwidth and 25MHz large-signal -3dB bandwidth (at 4Vp-p) support wide dynamic range signal conditioning.
It achieves 16-bit accurate settling in 23ns due to high slew rate (388V/µs) and low distortion (–97dBc SFDR), while maintaining 115dB open-loop gain and 75–100dB CMRR across –40°C to +85°C. Input common-mode range extends from VEE to VCC – 1V, enabling single-supply operation with rail-to-rail output swing capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 150MHz at AVCL = +5V/V - supports high-frequency signal amplification without gain roll-off in ADC front-end stages. |
| 16-Bit Settling Time | 23ns to 0.0015% - ensures full accuracy for 40+ MSPS sampling in 16-bit ADC drivers. |
| Slew Rate | 388V/µs - enables clean reproduction of fast transient signals without slewing-induced distortion. |
| Input Voltage Noise Density | 2.2nV/√Hz - preserves SNR in low-level analog signal chains, critical for high-resolution digitization. |
| Spurious-Free Dynamic Range | 97dBc at 1MHz, 4Vp-p - minimizes harmonic contamination in IF/RF and instrumentation applications. |
| Quiescent Supply Current | 15mA per amplifier - balances high-speed performance with moderate power consumption in portable or thermally constrained designs. |
| Output Drive Capability | ±65mA - drives 500Ω loads directly and sustains stable operation into 30pF capacitive loads. |
Pinout & Package
MAX4435EUK is housed in a 5-pin SOT23 package (package code U5-1), with exposed pad not electrically connected. The compact 2.9mm × 1.6mm footprint supports high-density PCB layouts in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node - capable of ±65mA sourcing/sinking and rail-to-rail swing (within 15mV of rails at 10kΩ load). |
| 2 | VEE | Ground reference terminal - must be connected to low-impedance system ground; serves as return path for input bias and output current. |
| 3 | IN+ | Noninverting input - high-impedance (1.7MΩ common-mode) node; requires matched DC source impedance for offset minimization. |
| 4 | IN− | Inverting input - same impedance characteristics as IN+; forms feedback node in standard configurations. |
| 5 | VCC | Positive supply terminal - operates from +4.5V to +5.5V; requires local 0.1µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling | 23ns to 0.0015% error - eliminates timing uncertainty in high-speed sampling systems requiring sub-LSB fidelity. |
| Low-noise voltage feedback | 2.2nV/√Hz input voltage noise - maintains signal integrity when amplifying microvolt-level sensor outputs or ADC reference buffers. |
| +5V minimum stable gain | Internally compensated for AVCL ≥ +5 - prevents oscillation in fixed-gain instrumentation amplifier stages without external compensation. |
| Rail-to-rail output swing | Within 15mV of VEE and 65mV of VCC at 10kΩ - maximizes dynamic range in single-supply systems without level-shifting circuitry. |
| Capacitive load drive | Stable with ≤30pF load - accommodates ADC input capacitance and PCB trace capacitance without isolation resistor. |
Applications
| High-Speed ADC Preamplifier | IF/RF Signal Conditioning |
|---|---|
Use Scenario: Driving the analog input of a 16-bit, 40MSPS pipeline ADC in a communications receiver. IC Role / Device Role / Timing Role: High-fidelity buffer and gain stage that settles within 23ns to preserve LSB accuracy during sampling aperture. Use Value: 97dB SFDR and 2.2nV/√Hz noise prevent harmonic folding and maintain ENOB >15.2 bits at 1MHz. |
Use Scenario: Amplifying intermediate frequency signals (e.g., 70MHz IF in radar or software-defined radio). IC Role / Device Role / Timing Role: Low-distortion gain block with flat 80MHz 0.1dB bandwidth supporting wide instantaneous bandwidth. Use Value: 150MHz small-signal bandwidth and –97dBc SFDR suppress intermodulation products in multi-tone environments. |
| Low-Distortion Active Filter | Precision Instrumentation Front-End |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a high-resolution data converter. IC Role / Device Role / Timing Role: Unity-gain stable op amp configured in multiple feedback topology with precise component matching. Use Value: 115dB open-loop gain and 100dB min CMRR ensure filter transfer function accuracy remains unaffected by component tolerances. |
Use Scenario: Amplifying low-level thermocouple or strain gauge signals in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier with high PSRR (110dB) rejecting power supply ripple in sensitive measurement paths. Use Value: 2.2nV/√Hz noise density and 4µV/°C offset drift enable <1µV RMS noise floor over 10kHz bandwidth. |
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 | Unity-gain stable; 1GHz bandwidth but higher 4.5nV/√Hz noise and 25mA IQ. | Better for wideband RF gain blocks; less suitable for precision ADC driving due to higher noise and lower SFDR (–86dBc). | Select AD8009ARZ only when bandwidth >500MHz is required and noise budget allows ≥4nV/√Hz. |
| LMH6629MA/NOPB | +10V/V minimum stable gain; 1.5GHz bandwidth; 1.9nV/√Hz noise; 20mA IQ. | Requires higher closed-loop gain; superior noise but narrower gain stability window limits flexibility in variable-gain stages. | Choose LMH6629MA/NOPB for ultra-low-noise, high-gain (>+10) applications where layout allows strict gain control. |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4435EUK offers the optimal balance of 150MHz bandwidth, +5V gain stability, 2.2nV/√Hz noise, and 23ns 16-bit settling - uniquely suited for cost-sensitive, space-constrained 14-/16-bit ADC driver designs without over-specifying bandwidth or power.
Availability
MAX4435EUK is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and IF signal conditioning requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
Supply support for MAX4435EUK 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 for high-fidelity, high-speed signal conditioning in precision data conversion systems - emphasizing low distortion, fast settling, and robust capacitive-load drive in miniature packages.
FAQ
What is the minimum stable closed-loop gain for the MAX4435EUK?
The MAX4435EUK is internally compensated for closed-loop gains of +5V/V or greater. Operating below +5V/V may cause instability or peaking in frequency response. This differs from the MAX4434EUK, which is unity-gain stable. Always verify phase margin using AC analysis when designing near the minimum gain boundary.
Does the MAX4435EUK support true rail-to-rail output swing?
The MAX4435EUK delivers rail-to-rail output swing within specified limits: typically within 15mV of VEE and 65mV of VCC at 10kΩ load. At heavier loads (e.g., 500Ω), swing reduces to ~1.5V from each rail. Full rail-to-rail behavior is load- and temperature-dependent; consult Figure toc31/toc32 in the datasheet for voltage swing vs. temperature curves.
Can the MAX4435EUK drive an ADC input with 20pF capacitance?
Yes - the MAX4435EUK is characterized for stable operation with up to 30pF capacitive load without sustained oscillation. Its output isolation resistance profile (Figure toc19) confirms compatibility with typical ADC input capacitances (10–25pF). For loads >20pF, consider adding a 5–10Ω series isolation resistor to dampen potential ringing.
What is the typical power supply rejection ratio (PSRR) of the MAX4435EUK?
The MAX4435EUK provides 110dB typical DC PSRR and –101dB AC PSRR at 100kHz. This high rejection suppresses power supply noise from affecting output accuracy - critical when sharing LDOs with digital sections in mixed-signal systems. PSRR degrades above 1MHz, so local 0.1µF + 10µF bypassing remains essential.
Is the MAX4435EUK pin-compatible with other devices in the MAX4434–MAX4437 family?
The MAX4435EUK shares the same 5-pin SOT23 pinout as the MAX4434EUK (OUT, VEE, IN+, IN−, VCC), but they are not functionally interchangeable due to differing gain stability requirements. Substituting MAX4434EUK for MAX4435EUK in a +5V-gain circuit risks instability; substituting MAX4435EUK in a unity-gain circuit will likely oscillate.
MAX4435EUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- 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:
- SOT-23-5
MAX4435EUK FAQ
1.How can I place an order for MAX4435EUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4435EUK 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 MAX4435EUK reliable?
The price and inventory of MAX4435EUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4435EUK is usually 5 days.
3.What payment methods are accepted for MAX4435EUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4435EUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4435EUK?
MAX4435EUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4435EUK 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 MAX4435EUK?
For technical support, including MAX4435EUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4435EUK requirements.
6.How does Aetrix verify that MAX4435EUK is sourced from the original manufacturer or authorized distributors?
All MAX4435EUK 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 MAX4435EUK meets industry standards.
7.What is the process for return or replacement of MAX4435EUK?
All MAX4435EUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX4435EUK, 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 MAX4435EUK part is unused and in its original packaging.
Return procedure for MAX4435EUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4435EUK Tags
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LM358DT
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