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Analog Devices Inc./Maxim Integrated MAX4435EUK-T
- Part No.:
- MAX4435EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4435EUK-T.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,434
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Product details
Overview
MAX4435EUK-T from Maxim Integrated is a single, high-speed, voltage-feedback operational amplifier optimized for closed-loop gains ≥ +5V/V, delivering 16-bit accurate settling in 23ns, 150MHz small-signal -3dB bandwidth, and 388V/µs slew rate. It features 2.2nV/√Hz input voltage noise, 97dB SFDR at 1MHz (4VP-P), and 65mA output drive - making it ideal for driving high-speed 14- and 16-bit ADCs in precision data acquisition systems.
For engineers reviewing the MAX4435EUK-T datasheet, MAX4435EUK-T pinout, MAX4435EUK-T application, or MAX4435EUK-T equivalent, key selection criteria include its +5V/V minimum stable gain requirement, SOT23-5 package constraints, ultra-low distortion performance at high output swing, and compatibility with capacitive-load ADC front-ends requiring fast settling and low glitch energy.
Technical Context
The MAX4435EUK-T uses a voltage-feedback architecture with internal compensation tailored for closed-loop gains of +5V/V or greater - unlike the unity-gain-stable MAX4434EUK-T. Its 388V/µs slew rate and 23ns 16-bit (0.0015%) settling time are achieved under AVCL = +5, RL = 500Ω, and 4V step conditions, enabling clean signal conditioning for sampling rates up to ~40MSPS.
It operates from a single +4.5V to +5.5V supply, supports rail-to-rail output swing within 200mV of VCC and 70mV of VEE, and maintains 115dB open-loop gain while drawing only 15–18mA quiescent current per amplifier - balancing speed, linearity, and power efficiency for space-constrained, high-fidelity analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal -3dB Bandwidth | 150MHz at AVCL = +5 - supports wideband signal amplification without gain peaking or phase degradation in filter or driver stages. |
| Slew Rate | 388V/µs - enables full-scale 4V output transitions in ≤10.3ns, critical for minimizing distortion in fast-settling ADC driver applications. |
| 16-Bit Settling Time | 23ns to 0.0015% (1.5ppm) accuracy - ensures residual error remains below 1 LSB for 16-bit converters sampling at ≥25MSPS. |
| Input Voltage Noise Density | 2.2nV/√Hz - contributes <1.4µVRMS integrated noise over 10MHz bandwidth, preserving SNR in low-amplitude sensor or IF signal paths. |
| Spurious-Free Dynamic Range | 97dBc at 1MHz, 4VP-P output - confirms ultra-low harmonic and intermodulation distortion for demanding communications and instrumentation applications. |
| Output Drive Current | ±65mA - sustains 500Ω load drive at full output swing without clipping, supporting direct interface to ADC input networks and termination resistors. |
| Supply Current per Amplifier | 15–18mA - enables high-speed operation in thermally constrained SOT23-5 packages without excessive self-heating or board-level thermal management. |
Pinout & Package
MAX4435EUK-T is housed in a lead(Pb)-free, RoHS-compliant 5-pin SOT23 package (package code U5-1), with exposed pad not internally connected. The compact 2.9mm × 1.6mm footprint supports high-density PCB layouts in portable and embedded measurement systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node - drives ADC input or filter network; requires local 1nF/0.1µF bypassing and minimal trace length to preserve stability with capacitive loads. |
| 2 | VEE | Ground reference terminal - must connect to low-impedance ground plane; shared return path for bias and output current. |
| 3 | IN+ | Noninverting input - high-impedance node (1.7MΩ common-mode); matched DC resistance required at both inputs for offset minimization. |
| 4 | IN− | Inverting input - accepts feedback network; sensitive to stray capacitance; RS resistor must be ≤500Ω for dynamic stability. |
| 5 | VCC | Positive supply input - requires dedicated 1nF ceramic + 10µF tantalum bypassing at entry point; tolerates +4.5V to +5.5V operation. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 23ns | Guarantees sub-LSB error for 16-bit ADCs sampling at ≥43MSPS, eliminating need for post-acquisition digital correction in real-time systems. |
| 97dB SFDR at 1MHz, 4VP-P | Validates spectral purity under realistic large-signal conditions - essential for IF sampling receivers and high-fidelity digitization of RF/IF signals. |
| 2.2nV/√Hz input voltage noise | Enables detection of µV-level signals in front-end preamplifiers without degrading system SNR, especially when driving high-resolution SAR or sigma-delta ADCs. |
| 65mA high-output drive | Supports direct driving of 500Ω ADC input impedances and RC anti-aliasing filters without external buffers, reducing component count and layout complexity. |
| +5V/V minimum stable gain | Defines safe operating region: gain-setting resistors must yield closed-loop gain ≥+5 to prevent oscillation - simplifies stability analysis vs. unity-gain alternatives. |
Applications
| High-Speed ADC Preamplifier | Low-Distortion Active Filter |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit, 40MSPS pipeline ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: High-fidelity buffer and gain stage that settles within 23ns to 0.0015%, maintaining amplitude and phase integrity across 0–20MHz IF band. Use Value: Eliminates aperture jitter-induced SNR loss and preserves 97dB SFDR, enabling direct IF sampling without intermediate downconversion. |
Use Scenario: Implementing a 5th-order Butterworth low-pass filter at 10MHz cutoff for anti-aliasing prior to a 14-bit SAR ADC. IC Role / Device Role / Timing Role: Active filter amplifier with 150MHz bandwidth and 388V/µs slew rate, ensuring linear phase response and minimal group delay variation. Use Value: Maintains stopband rejection >60dB beyond 15MHz while delivering full-scale 4VP-P output without slew-induced distortion. |
| IF/RF Amplifier | Precision Instrumentation Signal Chain |
|
Use Scenario: Amplifying 70MHz IF signals in a radar pulse-Doppler processing module before envelope detection. IC Role / Device Role / Timing Role: Wideband, low-noise gain block with 2.2nV/√Hz input noise and 150MHz flat gain bandwidth. Use Value: Achieves >75dB dynamic range over 10kHz–50MHz span, supporting precise amplitude measurement of weak return pulses. |
Use Scenario: Conditioning low-level thermocouple or strain gauge outputs in a calibrated industrial data logger. IC Role / Device Role / Timing Role: Precision gain stage with 100dB min open-loop gain and 4µV/°C offset drift, referenced to stable 2.5V reference. Use Value: Delivers <0.005% gain error and <1µV RMS noise over 10Hz–100kHz, meeting Class A metrology requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MA/NOPB | Unity-gain stable; 1.5GHz GBW; 2.9nV/√Hz noise; SO-8 package only. | Supports AVCL = +1 to +10 but lacks guaranteed 23ns 16-bit settling at +5V/V; higher power (20mA). | Select when unity-gain configuration or wider bandwidth (>200MHz) is required; not drop-in due to different gain stability and package. |
| ADA4898-1ARZ-R7 | Unity-gain stable; 290MHz GBW; 0.9nV/√Hz noise; SO-8 package; 12.6mA IQ. | Superior noise and lower power, but 35ns 16-bit settling (vs. 23ns) and no +5V/V-optimized compensation. | Prefer for ultra-low-noise, low-power applications where 23ns settling is not mandatory; requires redesign for stability at AVCL = +5. |
Compared with LMH6629MA/NOPB and ADA4898-1ARZ-R7, the MAX4435EUK-T uniquely combines +5V/V-optimized compensation, 23ns 16-bit settling, and SOT23-5 packaging - offering a size- and timing-critical advantage for high-channel-count ADC front-ends where board area and deterministic latency are constrained.
Availability
MAX4435EUK-T is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and IF signal conditioning requiring stable component supply, consistent parametric performance across temperature, and long-term manufacturing continuity.
Supply support for MAX4435EUK-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 precision analog, mixed-signal, and high-speed ICs for demanding industrial, medical, and communications applications.
The MAX4434–MAX4437 family was developed specifically for high-fidelity, high-speed signal conditioning in 14- to 16-bit data conversion systems - emphasizing ultra-low distortion, fast settling, and robust capacitive-load drive capability.
FAQ
What is the minimum closed-loop gain required for stable operation of the MAX4435EUK-T?
The MAX4435EUK-T is internally compensated for closed-loop gains of +5V/V or greater. Operating at gains below +5 may cause peaking, ringing, or oscillation due to insufficient phase margin. This differs from the MAX4434EUK-T, which is unity-gain stable. Always verify stability with actual PCB layout and load conditions when using MAX4435EUK-T in gain-of-5 or higher configurations.
Can the MAX4435EUK-T drive a typical 14-bit or 16-bit ADC input directly?
Yes, the MAX4435EUK-T is explicitly designed for this role. Its 23ns 16-bit settling time, 65mA output drive, and ability to maintain 97dB SFDR at 4VP-P output make it suitable for direct interface to modern SAR and pipeline ADCs with 500Ω input impedance and switched-capacitor sampling networks. Layout best practices - including short traces, local bypassing, and isolation resistors for heavy capacitive loads - are essential.
What is the maximum capacitive load the MAX4435EUK-T can drive without instability?
The MAX4435EUK-T can drive up to 30pF without sustained oscillations, as specified in the datasheet. For larger capacitive loads (e.g., ADC input capacitance plus PCB trace capacitance exceeding 30pF), a series isolation resistor (RISO) of 5–20Ω should be placed between the MAX4435EUK-T output and the load. This preserves phase margin while introducing negligible gain error (<0.5%) at high frequencies.
Does the MAX4435EUK-T support single-supply operation?
Yes, the MAX4435EUK-T is a single-supply op amp rated for +4.5V to +5.5V operation (VCC to GND). It features rail-to-rail output swing - delivering within 200mV of VCC and 70mV of GND with 10kΩ load - and accepts input common-mode voltages from GND to VCC − 1V. This enables true single-supply signal conditioning in systems without negative rails.
How does the MAX4435EUK-T compare to the MAX4434EUK-T in terms of settling time and gain stability?
The MAX4435EUK-T achieves 23ns 16-bit settling time at AVCL = +5, whereas the MAX4434EUK-T requires 35ns at AVCL = +1. Crucially, the MAX4435EUK-T is compensated for gains ≥+5 and becomes unstable below that, while the MAX4434EUK-T is unity-gain stable. These differences reflect distinct internal compensation strategies - selecting MAX4435EUK-T trades gain flexibility for superior speed in fixed-gain, high-performance ADC driver roles.
MAX4435EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- 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-T FAQ
1.How can I place an order for MAX4435EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4435EUK-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 MAX4435EUK-T reliable?
The price and inventory of MAX4435EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4435EUK-T is usually 5 days.
3.What payment methods are accepted for MAX4435EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4435EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4435EUK-T?
MAX4435EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4435EUK-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 MAX4435EUK-T?
For technical support, including MAX4435EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4435EUK-T requirements.
6.How does Aetrix verify that MAX4435EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4435EUK-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 MAX4435EUK-T meets industry standards.
7.What is the process for return or replacement of MAX4435EUK-T?
All MAX4435EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4435EUK-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 MAX4435EUK-T part is unused and in its original packaging.
Return procedure for MAX4435EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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