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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:2,535
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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 full-scale 4Vp-p signal delivery into ≥4V input dynamic range ADCs.
For engineers reviewing the MAX4432EUA+ datasheet, MAX4432EUA+ pinout, MAX4432EUA+ application, or MAX4432EUA+ equivalent, this page provides verified circuit role, package mapping, pin-level terminal functions, real-world ADC interface constraints, and validated alternative options for precision high-speed analog front-end design.
Technical Context
The MAX4432EUA+ employs a voltage-feedback architecture with internal unity-gain compensation, distinguishing it from current-feedback amplifiers while matching their speed in ADC driver roles. Its 110dB minimum open-loop gain and 125dB typical value ensure stable closed-loop accuracy at gains ≥1, and its 100dB SFDR at 1MHz with 4Vp-p output confirms low distortion under real ADC input conditions.
Designed for dual-supply operation (±4.5V to ±5.5V), the device supports rail-to-rail output swing (VEE + 2.6V to VCC – 0.6V into 500Ω) and features matched input offset voltage (±0.25mV between amplifiers), critical for differential signal conditioning in instrumentation and receiver chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 180MHz at AVCL = +1 - enables accurate amplification of signals up to Nyquist frequency of 90MSPS ADCs. |
| 16-Bit Settling Time | 37ns to 0.0015% - guarantees full resolution settling before next ADC sample clock edge. |
| Input Voltage Noise Density | 2.8nV/√Hz - preserves SNR when amplifying low-level sensor or IF signals prior to digitization. |
| Output Drive Current | ±60mA - sustains fast transient currents required to charge ADC input sampling capacitors without droop. |
| Spurious-Free Dynamic Range | 100dB at 1MHz, 4Vp-p - ensures minimal harmonic contamination in wideband receiver or spectrum analysis applications. |
| Open-Loop Gain | 110dB (min), 125dB (typ) - maintains <0.01% gain error in precision gain stages with feedback resistors ≤10kΩ. |
| Supply Voltage Range | ±4.5V to ±5.5V - compatible with standard ±5V analog supply rails and tolerant of 10% line variation. |
Pinout & Package
The MAX4432EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), a space-constrained surface-mount package with exposed pad for thermal enhancement and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Amplifier A Output | Low-impedance buffered output capable of sourcing/sinking ±60mA; requires local 0.1µF bypass to ground. |
| 2 (INA−) | Amplifier A Inverting Input | Differential input node; input bias current 11–30µA; must be impedance-matched to INA+ for DC stability. |
| 3 (INA+) | Amplifier A Noninverting Input | Differential input node; common-mode range extends to VEE + 2.5V and VCC − 0.9V. |
| 4 (VEE) | Negative Power Supply | Return path for dual supply; connects to system −5V rail; requires dedicated 1nF + 10µF bypassing. |
| 5 (INB+) | Amplifier B Noninverting Input | Independent second channel input; matched offset (±0.25mV) enables precision differential pair configurations. |
| 6 (INB−) | Amplifier B Inverting Input | Second channel differential input; same bias and CMRR specs as INA−/INA+. |
| 7 (OUTB) | Amplifier B Output | Fully independent output; crosstalk to OUTA is −125dB at 1MHz - suitable for isolated signal paths. |
| 8 (VCC) | Positive Power Supply | Supply connection for +5V rail; shares bypassing network with VEE but must have separate 0.1µF ceramic cap. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 37ns | Enables direct interface with 14-/16-bit ADCs sampling at ≥20MSPS without external settling-time compensation. |
| 100dB SFDR at 1MHz, 4Vp-p | Meets spectral purity requirements for IF sampling receivers and software-defined radio front ends. |
| 2.8nV/√Hz input voltage noise | Preserves effective number of bits (ENOB) when amplifying sub-100µV sensor outputs or low-level RF signals. |
| ±60mA output drive capability | Charges typical 10–20pF ADC input capacitance within settling window without gain peaking or overshoot. |
| Matched input offset voltage (±0.25mV) | Reduces common-mode error in dual-channel instrumentation amplifiers or I/Q signal paths. |
| 8-pin µMAX package (3mm × 3mm) | Supports high-density PCB layouts in portable test equipment and compact communications modules. |
Applications
| High-Speed ADC Preamplifier | IF Amplifier |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit, 80MSPS pipeline ADC in a radar digitizer. IC Role / Device Role / Timing Role: Precision gain stage and charge reservoir that settles to 16-bit accuracy within 37ns before each sample clock edge. Use Value: Eliminates need for external settling delay or post-amplifier calibration due to guaranteed 0.0015% settling performance. |
Use Scenario: Amplifying 70MHz IF signal in a satellite communications LNB downconverter. IC Role / Device Role / Timing Role: Low-noise, low-distortion voltage amplifier operating at fixed +1 gain with 180MHz bandwidth. Use Value: Maintains 100dB SFDR across full 70MHz band, preserving adjacent-channel rejection in multi-carrier systems. |
| Low-Distortion Active Filter | Precision Instrumentation Signal Chain |
|
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a 14-bit SAR ADC. IC Role / Device Role / Timing Role: Dual-channel op amp configured as two cascaded 2-pole sections with matched gain and phase response. Use Value: Leverages ±0.25mV inter-amplifier offset match to minimize passband ripple and group delay distortion. |
Use Scenario: Conditioning low-level thermocouple or strain gauge signals in a calibrated industrial data logger. IC Role / Device Role / Timing Role: Dual-channel, low-drift preamplifier with rail-compatible output swing and 110dB open-loop gain. Use Value: Achieves <1µV/°C offset drift contribution and supports true 4Vp-p full-scale output into 500Ω loads. |
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 bandwidth, +2 min stable gain, 5500V/µs slew rate; higher power (15mA/amplifier). | Better suited for >200MHz small-signal gain stages; not unity-gain stable; unsuitable for direct ADC driving at AV = +1. | Select AD8009ARZ only when bandwidth >500MHz is required and gain ≥+2 is acceptable. |
| LMH6629MA/NOPB | Dual-channel, 720MHz bandwidth, unity-gain stable, 3.3nV/√Hz noise, 30ns 16-bit settling; lower output drive (±35mA). | Compatible pinout (SO-8), but µMAX footprint differs; lower drive limits use with high-CIN ADCs (>15pF) or heavy loads. | Choose LMH6629MA/NOPB for space-constrained SO-8 designs where 35mA drive suffices and 3.3nV/√Hz noise is acceptable. |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4432EUA+ uniquely balances unity-gain stability, 37ns 16-bit settling, 60mA drive, and µMAX packaging - making it the only option among the three qualified for direct 4Vp-p, 16-bit ADC interface in miniaturized systems.
Availability
MAX4432EUA+ is available at Aetrix Electronics and suitable for high-speed data acquisition, RF receiver front ends, and precision instrumentation requiring stable component supply across extended temperature ranges (−40°C to +85°C).
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) designs high-performance analog, mixed-signal, and power-management ICs for demanding industrial, communications, and computing applications.
The MAX4430–MAX4433 family was developed specifically for ultra-low-distortion, high-bandwidth signal conditioning in 14-/16-bit data conversion systems - prioritizing settling accuracy, noise floor, and ADC interface robustness over general-purpose op amp versatility.
FAQ
What is the maximum capacitive load the MAX4432EUA+ can drive without oscillation?
The MAX4432EUA+ remains stable with up to 47pF capacitive load at unity gain, per manufacturer characterization. For loads exceeding 20pF, adding a 5–20Ω isolation resistor in series with the output is recommended to maintain phase margin and suppress ringing. This design practice is validated in the MAX4432EUA+ Typical Operating Characteristics (Figure 3 and toc17).
Does the MAX4432EUA+ support single-supply operation?
No - the MAX4432EUA+ is specified exclusively for dual-supply operation from ±4.5V to ±5.5V. Its input common-mode range (VEE + 2.5V to VCC − 0.9V) and output swing (VEE + 2.6V to VCC − 0.6V) require symmetric rails; it lacks rail-to-rail input or single-supply biasing circuitry. Using it with single-ended supplies will result in undefined behavior or damage.
How does the MAX4432EUA+ achieve 100dB SFDR at 1MHz with 4Vp-p output?
The MAX4432EUA+ achieves 100dB SFDR through ultra-low harmonic distortion (<−100dBc for 2nd/3rd harmonics at 1MHz, 4Vp-p) combined with 2.8nV/√Hz input noise. This performance stems from its proprietary voltage-feedback topology, matched transistor pairs, and optimized output stage - all confirmed in AC Electrical Characteristics Table (SFD R parameter) and Figure toc20/toc21 of the MAX4432EUA+ datasheet.
Is the MAX4432EUA+ pin-compatible with other µMAX-packaged dual op amps?
No - the MAX4432EUA+ uses a proprietary 8-pin µMAX pinout (OUTA, INA−, INA+, VEE, INB+, INB−, OUTB, VCC) that differs from industry-standard SO-8 or generic µMAX op amp layouts. Substitution with non-Maxim µMAX op amps requires PCB redesign. Pin compatibility is only guaranteed within the MAX4432/MAX4433 family (e.g., MAX4433EUA+ shares identical pinout but differs in gain stability).
What thermal considerations apply to the MAX4432EUA+ in continuous operation?
The MAX4432EUA+ has a maximum junction temperature of +150°C and a thermal resistance θJA of 222°C/W (µMAX package). At 11mA per amplifier (22mA total) and ±5V supplies, power dissipation is ~110mW - resulting in ~24°C rise above ambient. For reliable operation above +70°C ambient, derate power by 4.5mW/°C beyond +70°C, per Absolute Maximum Ratings table.
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:
- Last Time Buy
- 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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