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Analog Devices Inc./Maxim Integrated MAX4434EUK+T
- Part No.:
- MAX4434EUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4434EUK+T.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,402
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Product details
Overview
The MAX4434EUK+T from Maxim Integrated is a single, unity-gain-stable, voltage-feedback operational amplifier optimized for high-speed 14- and 16-bit ADC preamplification. It delivers 150MHz small-signal -3dB bandwidth, 35ns 16-bit (0.0015%) settling time, and 2.2nV/√Hz input voltage noise density while operating on +5V single supply with 15mA quiescent current per amplifier.
For engineers reviewing the MAX4434EUK+T datasheet, MAX4434EUK+T pinout, MAX4434EUK+T application, or MAX4434EUK+T equivalent, this op amp is selected for precision, low-distortion signal conditioning in high-resolution data acquisition systems where fast settling, wide output swing, and robust capacitive-load drive are required.
Technical Context
The MAX4434EUK+T uses a voltage-feedback architecture with internal unity-gain compensation, enabling stable operation at closed-loop gains ≥1. Its 133V/µs slew rate and 28MHz large-signal -3dB bandwidth support accurate amplification of fast transient signals up to 4Vp-p.
Designed for single-supply operation (VCC = +4.5V to +5.5V, VEE = 0V), it features rail-to-rail output swing capability (within 200mV of VCC and 70mV of ground at 10kΩ load) and 65mA output drive-enabling direct interface with modern high-speed ADC inputs without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal -3dB Bandwidth | 150MHz - supports wideband signal conditioning up to Nyquist frequencies of >70MHz sampling systems |
| 16-Bit Settling Time (0.0015%) | 35ns - ensures full accuracy within one ADC conversion cycle at ≥28.6MSPS sampling rates |
| Slew Rate | 133V/µs - enables faithful reproduction of fast 2V step signals without slewing distortion |
| Input Voltage Noise Density | 2.2nV/√Hz - contributes <0.5 LSB noise in 16-bit, 1MHz-bandwidth systems with 50Ω source |
| Open-Loop Gain | 115dB (typ) - provides >90dB loop gain at 100kHz, ensuring high DC precision in closed-loop configurations |
| Output Drive Current | ±65mA - drives 500Ω loads directly and sustains 4Vp-p swing into 500Ω with minimal distortion |
| Spurious-Free Dynamic Range | -97dBc at 1MHz, 4Vp-p - meets SFDR requirements for 16-bit ADC drivers without post-filtering |
Pinout & Package
MAX4434EUK+T is housed in a RoHS-compliant, lead(Pb)-free 5-pin SOT23 package (package code U5-1), optimized for space-constrained PCB layouts and high-frequency performance via short internal bond wires and low parasitic inductance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; capable of ±65mA sourcing/sinking and rail-to-rail swing into 10kΩ |
| 2 | VEE | Ground reference terminal; must be connected to low-impedance system ground plane |
| 3 | IN+ | Noninverting input; high-impedance (1.7MΩ common-mode), accepts input voltages from VEE to VCC−1V |
| 4 | IN− | Inverting input; matched to IN+ for CMRR >100dB; requires balanced layout for optimal AC performance |
| 5 | VCC | Positive supply pin; requires local 0.1µF ceramic bypass capacitor placed ≤2mm from pin |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Internally compensated for stable operation at gain = +1, eliminating need for external compensation components |
| 16-bit accurate settling | 35ns to 0.0015% error enables use with 14-/16-bit ADCs sampling at ≥25MSPS without additional calibration |
| Low-noise, low-distortion | 2.2nV/√Hz voltage noise + -97dBc SFDR at 1MHz ensures <1LSB noise floor contribution in 16-bit systems |
| High-output current drive | 65mA output allows direct driving of ADC input capacitance (typically 10–20pF) and series termination resistors |
| Single-supply operation | +4.5V to +5.5V supply range with input common-mode range extending to VEE and output swing within 200mV of rails |
Applications
| High-Speed ADC Preamplifier | IF/RF Signal Conditioning |
|---|---|
Use Scenario: Driving the analog input of a 16-bit, 40MSPS pipeline ADC in a software-defined radio front-end. IC Role / Device Role / Timing Role: Precision buffer and gain stage that settles fully before ADC aperture time, preserving SNR and SFDR. Use Value: 35ns 16-bit settling and -97dBc SFDR ensure no degradation in effective number of bits (ENOB) at full sample rate. |
Use Scenario: Amplifying intermediate frequency (IF) signals at 70MHz in a cellular base station receiver chain. IC Role / Device Role / Timing Role: Low-distortion, wideband gain block placed after mixer and before anti-alias filter. Use Value: 150MHz bandwidth and 2.2nV/√Hz noise maintain channel selectivity and adjacent-channel rejection ratio (ACRR). |
| Low-Distortion Active Filter | Precision Instrumentation Front-End |
Use Scenario: Implementing a 4th-order Butterworth bandpass filter centered at 10MHz for ultrasound signal processing. IC Role / Device Role / Timing Role: High-linearity active element in multiple feedback topology with precise pole placement. Use Value: 115dB open-loop gain and 133V/µs slew rate minimize gain error and harmonic distortion across passband. |
Use Scenario: Signal conditioning stage in a portable medical ECG monitor requiring DC-coupled, low-drift amplification. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with high CMRR and low input bias current. Use Value: 100dB min CMRR and 22µA max input bias current reduce motion artifact and electrode offset errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8009ARZ | Higher slew rate (1000V/µs), lower bandwidth (1GHz), higher supply current (17mA), not unity-gain stable | Better for >100MHz pulse amplification; unsuitable for G=1 configurations without external compensation | Select AD8009ARZ only when gain ≥+2 is used and >500V/µs slew is required; MAX4434EUK+T preferred for unity-gain ADC buffering |
| LMH6629MA/NOPB | Lower noise (1.9nV/√Hz), similar bandwidth (1.5GHz), higher quiescent current (20mA), unity-gain stable | Superior noise performance in sub-10MHz applications; higher power dissipation limits use in thermally constrained designs | Choose LMH6629MA/NOPB for ultra-low-noise, low-frequency precision; MAX4434EUK+T offers better power efficiency and proven ADC interface robustness |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4434EUK+T uniquely balances 150MHz bandwidth, unity-gain stability, 35ns 16-bit settling, and 15mA supply current-making it the most design-efficient choice for space- and power-sensitive 14-/16-bit ADC driver applications.
Availability
MAX4434EUK+T is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for MAX4434EUK+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 computing applications.
The MAX4434EUK+T belongs to Maxim's high-speed op amp product line, designed specifically to address the signal integrity and timing challenges of driving modern 14- and 16-bit analog-to-digital converters in demanding real-world environments.
FAQ
What is the maximum capacitive load the MAX4434EUK+T can drive without oscillation?
The MAX4434EUK+T can drive up to 30pF without sustained oscillations, as specified in the Absolute Maximum Ratings table. For loads exceeding 15pF, adding a 10Ω–50Ω isolation resistor in series with the output improves phase margin and suppresses ringing-verified in Typical Operating Characteristics Figure 3 and toc19. This design practice preserves stability while maintaining usable bandwidth in ADC interface applications using the MAX4434EUK+T.
Does the MAX4434EUK+T support true rail-to-rail input and output operation?
The MAX4434EUK+T supports rail-to-rail output swing (within 200mV of VCC and 70mV of VEE at 10kΩ load) but does not feature rail-to-rail input. Its input common-mode voltage range extends from VEE to (VCC − 1V), meaning it cannot accept signals within 1V of the positive rail. This limitation is explicitly guaranteed by the CMRR test condition and confirmed in the DC Electrical Characteristics table for the MAX4434EUK+T.
What is the recommended power-supply bypassing scheme for the MAX4434EUK+T?
Per the Applications Information section, the MAX4434EUK+T requires a 0.1µF surface-mount ceramic capacitor placed ≤2mm from the VCC pin to ground, plus a 1nF capacitor in parallel if high-frequency noise is present. A 10µF tantalum capacitor should be placed at the board's power entry point. These values and placements are validated in Layout and Power-Supply Bypassing guidance (page 9) and are critical to achieving the specified 150MHz bandwidth and -97dBc SFDR performance of the MAX4434EUK+T.
Can the MAX4434EUK+T operate from a +3.3V supply?
No-the MAX4434EUK+T is specified for operation only over +4.5V to +5.5V supply range, as stated in the Absolute Maximum Ratings and DC Electrical Characteristics tables. Operation below +4.5V is not characterized or guaranteed; parameters such as open-loop gain, bandwidth, and output swing degrade significantly outside this range. For +3.3V systems, consider alternatives like the MAX44263 or ADA4897-1, not the MAX4434EUK+T.
Is the MAX4434EUK+T pin-compatible with other devices in the MAX443x family?
Yes-the MAX4434EUK+T shares identical 5-pin SOT23 pinout with the MAX4435EUK+T (both have OUT, VEE, IN+, IN−, VCC on pins 1–5 respectively), as confirmed in the Pin Configurations section (page 10) and Selector Guide. However, internal compensation differs: MAX4434EUK+T is unity-gain stable, while MAX4435EUK+T requires minimum gain of +5. Swapping them without circuit redesign risks instability or degraded settling performance in the MAX4434EUK+T application.
MAX4434EUK+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:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 133V/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
MAX4434EUK+T FAQ
1.How can I place an order for MAX4434EUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4434EUK+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 MAX4434EUK+T reliable?
The price and inventory of MAX4434EUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4434EUK+T is usually 5 days.
3.What payment methods are accepted for MAX4434EUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4434EUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4434EUK+T?
MAX4434EUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4434EUK+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 MAX4434EUK+T?
For technical support, including MAX4434EUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4434EUK+T requirements.
6.How does Aetrix verify that MAX4434EUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4434EUK+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 MAX4434EUK+T meets industry standards.
7.What is the process for return or replacement of MAX4434EUK+T?
All MAX4434EUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4434EUK+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 MAX4434EUK+T part is unused and in its original packaging.
Return procedure for MAX4434EUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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