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Analog Devices Inc./Maxim Integrated MAX4435ESA
- Part No.:
- MAX4435ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4435ESA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,071
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Product details
Overview
MAX4435ESA from Maxim Integrated is a single, 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 2.2nV/√Hz input voltage noise density. Its 8-pin SO package supports robust single-supply operation from +4.5V to +5.5V with 15mA quiescent current per amplifier.
For engineers reviewing the MAX4435ESA datasheet, MAX4435ESA pinout, MAX4435ESA application, or MAX4435ESA equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts - all grounded in Maxim's official datasheet Rev 2 (April 2015).
Technical Context
The MAX4435ESA uses a voltage-feedback architecture internally compensated for stable operation at closed-loop gains of +5 V/V or greater - unlike the unity-gain-stable MAX4434/MAX4436 variants. Its 150MHz bandwidth and 388V/µs slew rate enable accurate amplification of fast transient signals without distortion-induced ADC quantization errors.
It achieves 97dB spurious-free dynamic range (SFDR) at 1MHz with 4VP-P output swing and maintains 115dB open-loop gain, ensuring high DC precision alongside AC performance. Input common-mode range extends from VEE to VCC − 1V, supporting rail-to-rail input operation in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal -3dB Bandwidth | 150MHz - enables faithful reproduction of signals up to ~100MHz before 3dB attenuation, critical for wideband IF/RF sampling. |
| 16-Bit Settling Time | 23ns (0.0015% error) - ensures full 16-bit accuracy within one ADC sampling interval at >40MSPS rates. |
| Slew Rate | 388V/µs - supports clean 4VP-P output transitions in under 10.3ns, preventing slewing-induced harmonic distortion. |
| Input Voltage Noise Density | 2.2nV/√Hz - contributes <1.5µVRMS integrated noise over 10MHz bandwidth, preserving SNR in precision preamplifier stages. |
| Open-Loop Gain | 115dB (min 100dB) - provides >100,000× loop gain for precise closed-loop gain control and low DC offset error. |
| Output Drive Current | ±65mA - drives 500Ω loads directly without external buffers, simplifying interface to ADC input networks. |
| Supply Voltage Range | +4.5V to +5.5V - compatible with standard 5V logic rails and LDO-regulated ADC supply domains. |
Pinout & Package
MAX4435ESA is housed in an 8-pin SO (Small Outline) package (package code S8-2), RoHS-compliant, with exposed pad not electrically connected. Thermal derating is 5.88mW/°C above +70°C; max continuous power dissipation at +70°C is 471mW.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection (N.C.) | Internally unconnected; must be left floating or tied to ground per layout best practice - no functional impact. |
| 2 | IN− | Inverting input terminal; requires matched impedance to IN+ for optimal CMRR and stability in closed-loop configurations. |
| 3 | IN+ | Noninverting input terminal; DC bias path required when used in single-supply applications to set common-mode voltage. |
| 4 | VEE | Ground reference pin; must connect to low-impedance system ground plane to minimize noise coupling and ensure PSRR performance. |
| 5 | N.C. | No Connection (N.C.); same as Pin 1 - not bonded, no internal connection. |
| 6 | OUT | Amplifier output; capable of ±65mA drive into resistive loads and stable with ≤30pF capacitive loads (with optional isolation resistor). |
| 7 | VCC | Positive supply pin; requires local 0.1µF ceramic + 10µF tantalum bypassing to suppress supply noise and prevent oscillation. |
| 8 | N.C. | No Connection (N.C.); identical function to Pins 1 and 5 - no internal bond wire or circuit connection. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 23ns | Enables direct interface to 16-bit ADCs sampling at ≥40MSPS without post-acquisition correction or oversampling. |
| 97dB SFDR at 1MHz, 4VP-P | Preserves signal integrity in receiver front-ends where intermodulation distortion would corrupt adjacent channel measurements. |
| 2.2nV/√Hz input voltage noise | Limits total input-referred noise to <2µVRMS in 1–10MHz bands, maintaining ENOB >15.5 bits for high-resolution measurement systems. |
| 388V/µs slew rate | Prevents slew-induced distortion on fast-rising pulses (e.g., radar pulse envelopes), ensuring fidelity in time-domain signal capture. |
| 65mA output drive capability | Drives 500Ω ADC input networks directly, eliminating need for external buffer stages and reducing board area and component count. |
Applications
| High-Speed ADC Preamplifier | Low-Distortion Active Filter |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit, 50MSPS pipeline ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: High-fidelity signal conditioning stage that settles to 16-bit accuracy within 23ns prior to ADC sampling edge. Use Value: Eliminates aperture jitter-induced noise floor degradation by delivering stable, low-distortion voltage to the ADC's switched-capacitor input. |
Use Scenario: Implementing a 5th-order Butterworth bandpass filter centered at 20MHz for IF signal selection. IC Role / Device Role / Timing Role: Active filter core providing gain, phase linearity, and wide dynamic range without introducing measurable harmonic distortion. Use Value: Achieves >97dB SFDR across passband, enabling detection of weak signals buried 100dB below strong interferers. |
| IF/RF Amplifier | Precision Instrumentation Front-End |
|
Use Scenario: Amplifying 10–50MHz intermediate frequency signals in a spectrum analyzer digitizer module. IC Role / Device Role / Timing Role: Wideband gain block with flat 150MHz response and minimal group delay variation. Use Value: Maintains amplitude and phase coherence across multi-MHz IF bands, essential for vector signal analysis accuracy. |
Use Scenario: Conditioning low-level sensor outputs (e.g., piezoelectric accelerometers) before digitization in a portable test instrument. IC Role / Device Role / Timing Role: Low-noise, high-PSRR preamplifier with rail-to-rail input capability operating from single 5V supply. Use Value: Delivers 115dB open-loop gain and 2.2nV/√Hz noise to resolve µV-level signals while rejecting digital supply noise. |
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 |
|---|---|---|---|
| AD8009ARZ | Unity-gain stable; 1GHz bandwidth but higher 4.5nV/√Hz noise and 20mA supply current. | Better for ultra-wideband gain blocks (>500MHz), less suitable for 16-bit ADC driving where noise and settling dominate. | Select AD8009ARZ only when bandwidth >500MHz is mandatory and SFDR >95dB is acceptable. |
| LMH6629MA/NOPB | Gain-of-10 stable; 720MHz bandwidth, 1.9nV/√Hz noise, but 25mA supply current and no guaranteed 16-bit settling spec. | Strong candidate for lower-noise 14-bit ADC interfaces; lacks published 23ns 16-bit settling guarantee at +5V gain. | Choose LMH6629MA/NOPB when sub-2nV/√Hz noise is prioritized over guaranteed 16-bit timing compliance. |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4435ESA uniquely guarantees 23ns 16-bit settling at +5V gain with 2.2nV/√Hz noise and 15mA supply current - making it the most balanced choice for production-grade 16-bit ADC driver designs requiring verified timing, noise, and power trade-offs.
Availability
MAX4435ESA is available at Aetrix Electronics and suitable for high-speed data acquisition, RF instrumentation, and precision test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4435ESA 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 MAX4434–MAX4437 family was designed specifically to solve high-speed, high-resolution ADC driving challenges - delivering guaranteed 16-bit settling, ultra-low distortion, and single-supply compatibility in compact packages.
FAQ
What is the minimum stable closed-loop gain for MAX4435ESA?
The MAX4435ESA 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 MAX4434ESA, which is unity-gain stable. Always verify stability with actual load conditions and PCB layout.
Can MAX4435ESA drive a 500Ω load while maintaining 16-bit accuracy?
Yes - the MAX4435ESA delivers ±65mA output current and maintains 23ns 16-bit settling time into 500Ω loads at +5V supply. Its 115dB open-loop gain ensures minimal gain error (<0.001%), and its 388V/µs slew rate prevents distortion on full-scale 4VP-P steps. Verified per datasheet Figure 12 and Table "DC Electrical Characteristics".
Does MAX4435ESA support true single-supply operation from 0V to +5V?
Yes - the MAX4435ESA operates with VEE = 0V and VCC = +5V. Its input common-mode range extends from VEE to VCC − 1V (0V to +4V), and output swings within 200mV of each rail into 10kΩ. For rail-to-rail input/output, external level-shifting or biasing is required per application circuit guidelines in the datasheet.
What is the maximum capacitive load MAX4435ESA can drive without instability?
The MAX4435ESA remains stable with up to 30pF capacitive load when properly bypassed and laid out. Beyond 30pF, output ringing or oscillation may occur. To drive larger loads (e.g., ADC input capacitance + trace capacitance), add a 5Ω–50Ω isolation resistor (RISO) in series with the output - as shown in Figure 3 of the datasheet - to restore phase margin.
How does MAX4435ESA's 97dB SFDR at 1MHz compare to typical high-speed op amps?
The MAX4435ESA's 97dB SFDR at 1MHz with 4VP-P output exceeds most general-purpose high-speed op amps (typically 85–92dB). This performance stems from its ultra-low 2.2nV/√Hz voltage noise and symmetric 3rd-harmonic cancellation in the voltage-feedback topology - directly enabling clean digitization of high-dynamic-range signals in receivers and analyzers.
MAX4435ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
MAX4435ESA FAQ
1.How can I place an order for MAX4435ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4435ESA 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 MAX4435ESA reliable?
The price and inventory of MAX4435ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4435ESA is usually 5 days.
3.What payment methods are accepted for MAX4435ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4435ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4435ESA?
MAX4435ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4435ESA 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 MAX4435ESA?
For technical support, including MAX4435ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4435ESA requirements.
6.How does Aetrix verify that MAX4435ESA is sourced from the original manufacturer or authorized distributors?
All MAX4435ESA 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 MAX4435ESA meets industry standards.
7.What is the process for return or replacement of MAX4435ESA?
All MAX4435ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4435ESA, 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 MAX4435ESA part is unused and in its original packaging.
Return procedure for MAX4435ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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