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Analog Devices Inc./Maxim Integrated MAX4432EUA
- Part No.:
- MAX4432EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4432EUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,284
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Product details
Overview
MAX4432EUA from Maxim Integrated is a dual, unity-gain-stable, voltage-feedback operational amplifier optimized for high-speed 14- and 16-bit ADC driving. It delivers 180MHz small-signal -3dB bandwidth, 37ns 16-bit (0.0015%) settling time, 2.8nV/√Hz input voltage noise density, and ±60mA output drive-enabling accurate signal conditioning in precision data acquisition systems.
For engineers reviewing the MAX4432EUA datasheet, MAX4432EUA pinout, MAX4432EUA application, or MAX4432EUA equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options for high-fidelity analog front-end design.
Technical Context
The MAX4432EUA employs a voltage-feedback architecture with internal unity-gain compensation, supporting stable operation at AVCL = +1 V/V. Its 180MHz bandwidth and 145V/µs slew rate (per channel) enable faithful reproduction of fast transient signals without phase distortion or gain peaking under typical 500Ω load conditions.
It features matched dual amplifiers with ≤0.25mV input offset voltage matching, 110dB minimum open-loop gain, and 100dB SFDR at 1MHz with 4Vp-p output-critical for preserving dynamic range when driving modern SAR and pipeline ADCs with ≥4V input swing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal -3dB BW | 180MHz - supports >100MSPS sampling with minimal amplitude roll-off in unity-gain buffer configurations |
| 16-bit settling time | 37ns to 0.0015% - ensures full resolution capture before next ADC sample clock edge |
| Input voltage noise density | 2.8nV/√Hz - contributes <1.2µVRMS integrated noise over 10MHz bandwidth, preserving SNR in wideband preamps |
| Open-loop gain | 110dB (min) - enables <0.001% gain error in precision gain stages with feedback resistors ≤10kΩ |
| Output drive current | ±60mA - drives 500Ω loads to full ±4V swing while maintaining linearity and settling performance |
| Supply current per amp | 11mA - allows dual-channel operation at 22mA total, suitable for power-constrained instrumentation |
| Input common-mode range | VEE + 2.5V to VCC – 0.9V - accommodates rail-to-rail input signals in ±5V dual-supply systems |
Pinout & Package
The MAX4432EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced for high-speed operation with exposed paddle (EP) connected to VEE internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load or ADC input; requires local 0.1µF bypass to ground |
| 2 | INA− | Inverting input of Amp A - sensitive to stray capacitance; keep trace short and guard with ground |
| 3 | INA+ | Noninverting input of Amp A - reference point for differential input; match impedance to INA− for CMRR |
| 4 | VEE | Negative supply rail - connect directly to low-impedance ground plane; EP tied to this pin |
| 5 | INB+ | Noninverting input of Amp B - independent channel; layout symmetry recommended vs. Amp A |
| 6 | INB− | Inverting input of Amp B - same layout rules apply as for INA− |
| 7 | OUTB | Amplifier B output - electrically isolated from OUTA; avoid shared trace routing to prevent crosstalk |
| 8 | VCC | Positive supply rail - bypass with 0.1µF ceramic capacitor placed ≤2mm from pin |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 37ns | Guarantees full-resolution signal fidelity for 14-/16-bit ADCs sampling at ≥25MSPS |
| 100dB SFDR at 1MHz, 4Vp-p | Enables clean spectral performance in IF/RF receiver chains without harmonic contamination |
| 2.8nV/√Hz input voltage noise | Limits added noise floor to <0.5% of 16-bit LSB (≈2.4µV) over 10MHz bandwidth |
| 60mA high output drive | Drives 500Ω ADC inputs to ±4V swing while maintaining 37ns settling and <0.01% THD |
| 8-pin µMAX package | 3mm × 3mm footprint saves PCB area vs. SO-8; thermal resistance θJA = 222°C/W enables 22mA continuous operation |
Applications
| High-Speed ADC Preamplifier | Low-Distortion Active Filter |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit, 100MSPS pipeline ADC in a digital oscilloscope front-end. IC Role / Device Role / Timing Role: Unity-gain buffer providing low-output-impedance, high-slew-rate signal delivery with sub-LSB settling before sampling clock edge. Use Value: 37ns 16-bit settling ensures <0.0015% error margin at 100MSPS, preserving ENOB >15.2 bits across full input bandwidth. |
Use Scenario: Implementing a 5th-order Butterworth anti-aliasing filter preceding a 14-bit SAR ADC in motor control feedback sensing. IC Role / Device Role / Timing Role: Dual-channel amplifier serving as both filter gain stage and output buffer, leveraging matched channels for balanced topology. Use Value: 0.25mV input offset matching minimizes DC error in differential filter outputs; 180MHz bandwidth maintains group delay flatness up to 10MHz cutoff. |
| IF Amplifier in Communications Receiver | Precision Instrumentation Signal Chain |
|
Use Scenario: Amplifying 70MHz IF signals in a software-defined radio (SDR) receiver prior to quadrature demodulation. IC Role / Device Role / Timing Role: Fixed-gain +1V/V driver delivering low-noise, high-SFDR signal to IQ demodulator's differential input. Use Value: 100dB SFDR at 1MHz and –105dBc harmonics at 1MHz/4Vp-p suppress adjacent-channel interference in dense spectrum environments. |
Use Scenario: Conditioning low-level sensor outputs (e.g., strain gauge bridge) in automated test equipment requiring 16-bit resolution over 0–100kHz bandwidth. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage with matched dual configuration enabling true-differential signal processing. Use Value: 2.8nV/√Hz noise density and 7µV/°C TCVOS ensure <12-bit effective resolution maintained across –40°C to +85°C operating range. |
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 | Single-channel, 1GHz GBW, 5,500V/µs slew rate; higher supply current (17mA); not unity-gain stable | Requires minimum gain of +2; unsuitable for direct unity-gain ADC buffering without external compensation | Select only when >500MHz bandwidth is mandatory and closed-loop gain ≥+2 is acceptable |
| LMH6629MA/NOPB | Dual-channel, 720MHz GBW, 3,500V/µs slew rate; 1.9nV/√Hz noise; unity-gain stable; 12.5mA per amp | Lower noise and higher speed, but larger SOIC-8 footprint and no µMAX option; higher cost | Prefer for ultra-low-noise applications where board space permits SOIC-8 and budget allows premium pricing |
Compared with MAX4432EUA, AD8009ARZ offers higher bandwidth but lacks unity-gain stability and dual-channel integration, while LMH6629MA/NOPB improves noise and speed but sacrifices the compact µMAX package and increases BOM cost-making MAX4432EUA optimal for space-constrained, cost-sensitive, unity-gain ADC driver designs.
Availability
MAX4432EUA is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply with guaranteed long-term availability.
Supply support for MAX4432EUA 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 demanding industrial, communications, and computing applications.
The MAX4430–MAX4433 product line was designed specifically for ultra-high-fidelity signal conditioning in 14-/16-bit data conversion systems-emphasizing speed, noise, distortion, and settling accuracy over general-purpose op amp trade-offs.
FAQ
What is the maximum capacitive load the MAX4432EUA can drive without oscillation?
The MAX4432EUA is specified to remain stable with up to 47pF capacitive load at the output when configured in unity gain. Exceeding this value risks reduced phase margin, ringing, or sustained oscillation-especially with high-Z feedback networks. For loads >47pF, a series isolation resistor (RISO = 10–50Ω) between the output pin and capacitive node restores stability while introducing negligible gain error (<0.5%) at DC.
Does the MAX4432EUA support single-supply operation?
The MAX4432EUA is specified for dual-supply operation (±4.5V to ±5.5V) and does not support true single-supply use. Its input common-mode range extends from VEE + 2.5V to VCC – 0.9V, and output swing is rail-limited (VEE + 2.6V to VCC – 0.6V with 500Ω load). Attempting single-supply biasing (e.g., VEE = 0V) violates absolute maximum ratings and degrades CMRR, PSRR, and distortion performance-use only in properly biased dual-rail systems.
How does the MAX4432EUA's 37ns settling time translate to practical ADC interface timing?
The MAX4432EUA's 37ns 16-bit (0.0015%) settling time means it fully resolves to within one LSB of final value within 37ns after a 4V step input. For a 16-bit ADC with 100MSPS sampling rate (10ns period), this allows ≥63ns of hold-time margin before the next sample clock-ensuring no aperture uncertainty-induced error. This margin is critical for maintaining ENOB >15.5 bits in high-speed digitization.
Is the MAX4432EUA pin-compatible with other dual op amps in the µMAX package?
No-the MAX4432EUA uses a proprietary 8-pin µMAX pinout (OUTA, INA−, INA+, VEE, INB+, INB−, OUTB, VCC) that differs from industry-standard dual op amp layouts (e.g., SO-8 pin 1 = NC, pin 2 = IN−, pin 3 = IN+, etc.). Direct replacement requires PCB redesign. Always verify pin mapping against the MAX4432EUA datasheet Figure "Pin Configurations" before layout reuse.
What thermal considerations apply to the MAX4432EUA in continuous operation?
The MAX4432EUA's 8-pin µMAX package has θJA = 222°C/W. At 22mA total quiescent current (11mA per amp) and ±5V supplies, power dissipation is ~220mW. With ambient at +70°C, junction temperature reaches ~120°C-within the 150°C limit but near derating threshold. Use of the exposed paddle (EP) soldered to a thermal pad on inner ground layers reduces θJA by ~30%, enabling reliable operation at full spec across –40°C to +85°C.
MAX4432EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 100V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 180 MHz
- Current - Input Bias:
- 11 µA
- Voltage - Input Offset:
- 1.25 mV
- Current - Supply:
- 11mA (x2 Channels)
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4432EUA FAQ
1.How can I place an order for MAX4432EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4432EUA 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 MAX4432EUA reliable?
The price and inventory of MAX4432EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4432EUA is usually 5 days.
3.What payment methods are accepted for MAX4432EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4432EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4432EUA?
MAX4432EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4432EUA 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 MAX4432EUA?
For technical support, including MAX4432EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4432EUA requirements.
6.How does Aetrix verify that MAX4432EUA is sourced from the original manufacturer or authorized distributors?
All MAX4432EUA 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 MAX4432EUA meets industry standards.
7.What is the process for return or replacement of MAX4432EUA?
All MAX4432EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4432EUA, 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 MAX4432EUA part is unused and in its original packaging.
Return procedure for MAX4432EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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