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Analog Devices Inc./Maxim Integrated MAX4432ESA
- Part No.:
- MAX4432ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4432ESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
The MAX4432ESA from Maxim Integrated is a dual, unity-gain-stable, voltage-feedback operational amplifier optimized for high-speed, low-distortion signal conditioning in precision data acquisition systems. It delivers 180MHz small-signal bandwidth, 37ns 16-bit settling time (0.0015%), 2.8nV/√Hz input voltage noise, and ±60mA output drive - enabling direct interface with 14- and 16-bit ADCs requiring ≥4Vp-p dynamic range.
For engineers reviewing the MAX4432ESA datasheet, MAX4432ESA pinout, MAX4432ESA application, or MAX4432ESA equivalent, key selection criteria include unity-gain stability, dual-channel crosstalk performance (–125dB at 1MHz), SO-8 package compatibility, and verified 100dB SFDR at 1MHz with 4Vp-p output - critical for IF/RF preamplifier and active filter designs demanding sub-0.002% settling accuracy.
Technical Context
The MAX4432ESA employs a voltage-feedback architecture with internal unity-gain compensation, distinguishing it from current-feedback amplifiers while matching their speed and drive capability. Its dual-channel layout supports independent high-fidelity signal paths with measured –125dB crosstalk at 1MHz, enabling simultaneous sampling without inter-channel interference.
Designed for dual-supply operation (±4.5V to ±5.5V), it maintains 110dB minimum open-loop gain and 100dB CMRR across –40°C to +85°C, with rail-to-rail output swing (VEE + 2.6V to VCC – 0.6V into 500Ω) and low 7µV/°C input offset drift - ensuring stable DC-coupled performance in precision instrumentation front ends.
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 16-bit accuracy within one clock cycle of high-speed sampling clocks. |
| Input Voltage Noise Density | 2.8nV/√Hz at 100kHz - preserves SNR in low-level sensor and IF amplifier stages before ADC digitization. |
| Spurious-Free Dynamic Range | 100dBc at 1MHz, 4Vp-p - ensures clean spectral purity for RF receiver and communications baseband applications. |
| Output Drive Current | ±60mA into 500Ω - directly drives ADC inputs with ≥4Vp-p dynamic range without external buffering. |
| Open-Loop Gain | 110dB (min) - provides sufficient loop gain for precise closed-loop gain accuracy and linearity control. |
| Crosstalk | –125dB at 1MHz - prevents signal leakage between channels in dual-path data acquisition and I/Q demodulator circuits. |
Pinout & Package
MAX4432ESA is housed in an 8-pin SO (SOIC-N) surface-mount package with standard 150-mil width and 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; pins are numbered counterclockwise from top-left when viewing the top side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - delivers full-swing, low-distortion signal to ADC input or next stage; requires local 0.1µF bypass to ground. |
| 2 | INA− | Amplifier A inverting input - connects to feedback network; balanced impedance with INA+ minimizes DC offset drift. |
| 3 | INA+ | Amplifier A noninverting input - accepts high-impedance sensor or signal source; must be bypassed if AC-coupled. |
| 4 | VEE | Negative power supply - referenced to system ground in single-supply configurations; requires dedicated 0.1µF ceramic bypass. |
| 5 | INB+ | Amplifier B noninverting input - electrically isolated from INA+; supports independent differential pair or I/Q channel routing. |
| 6 | INB− | Amplifier B inverting input - matched to INB+ for common-mode rejection; avoids shared trace coupling with INA−. |
| 7 | OUTB | Amplifier B output - symmetrical to OUTA; enables dual-channel simultaneous sampling without cross-modulation. |
| 8 | VCC | Positive power supply - supplies both amplifiers; decoupling capacitor must be placed <2mm from pin per high-frequency layout rules. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 37ns | Enables direct interface with 14-/16-bit ADCs operating at ≥27MSPS without additional settling-time margin. |
| 100dB SFDR at 1MHz, 4Vp-p | Maintains spectral integrity in IF amplification and baseband filtering where harmonic distortion degrades ENOB. |
| 2.8nV/√Hz input voltage noise density | Preserves signal-to-noise ratio in low-amplitude preamplifier stages preceding high-resolution ADC conversion. |
| –125dB crosstalk at 1MHz | Supports true dual-channel acquisition in I/Q receivers and simultaneous-sampling data loggers without calibration overhead. |
| ±60mA output drive into 500Ω | Eliminates need for external buffer stages when driving ADC inputs with ≥4Vp-p full-scale range. |
| Unity-gain stable voltage-feedback architecture | Provides predictable phase margin and step response without external compensation, unlike current-feedback alternatives. |
Applications
| High-Speed ADC Preamplifier | IF Amplifier |
|---|---|
Use Scenario: Driving the analog input of a 16-bit, 100MSPS pipeline ADC in a software-defined radio front end. IC Role / Device Role / Timing Role: Precision voltage-feedback buffer providing fast settling, low noise, and high output drive to meet ADC aperture jitter and full-scale error requirements. Use Value: 37ns 16-bit settling ensures no missing codes at maximum sample rate; 100dB SFDR preserves adjacent-channel rejection in wideband receivers. |
Use Scenario: Amplifying 70MHz intermediate frequency signals prior to quadrature demodulation in cellular base stations. IC Role / Device Role / Timing Role: Dual-channel IF gain block delivering matched amplitude/phase response across I and Q paths with minimal intermodulation. Use Value: –125dB crosstalk prevents I/Q image degradation; 180MHz bandwidth supports multi-carrier LTE and 5G NR channel bandwidths. |
| Low-Distortion Active Filter | Precision Instrumentation Front End |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a 14-bit SAR ADC in automated test equipment. IC Role / Device Role / Timing Role: Dual op-amp section realizing cascaded biquad stages with unity-gain stability and minimal group delay variation. Use Value: 2.8nV/√Hz noise floor prevents filter-induced SNR loss; 110dB open-loop gain ensures <0.001% gain error over temperature. |
Use Scenario: Conditioning low-level thermocouple or strain gauge outputs in industrial process controllers requiring 16-bit resolution. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier with matched input offsets and low TCVOS for ratiometric sensor excitation and differential measurement. Use Value: ±0.25mV input offset matching reduces common-mode error in bridge circuits; 100dB CMRR rejects power supply ripple and EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8022ARZ | 2.1nV/√Hz noise, 200MHz bandwidth, but only 70dB SFDR at 1MHz and no guaranteed 16-bit settling spec. | Better noise performance but lower distortion headroom limits use in high-SFDR ADC driver roles. | Select AD8022ARZ only when ultra-low noise dominates over SFDR and settling accuracy requirements. |
| LMH6629MA/NOPB | 2.7nV/√Hz noise, 1.5GHz gain-bandwidth, but unstable below AVCL = +5 and lacks unity-gain stability. | Requires minimum gain of +5, making it unsuitable for unity-gain ADC buffer configurations without redesign. | Choose LMH6629MA/NOPB only for higher-gain active filter or IF amplifier stages where gain ≥5 is acceptable. |
Compared with AD8022ARZ and LMH6629MA/NOPB, the MAX4432ESA uniquely combines unity-gain stability, 37ns 16-bit settling, and 100dB SFDR - making it the only drop-in solution for space-constrained, dual-channel, high-resolution ADC driver applications requiring guaranteed sub-0.002% accuracy.
Availability
MAX4432ESA is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4432ESA 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 power management ICs for demanding industrial, communications, and computing applications.
The MAX4430–MAX4433 family was engineered specifically for high-fidelity, high-speed signal conditioning in 14- and 16-bit data acquisition systems - prioritizing settling accuracy, SFDR, and dual-channel isolation over generic op-amp versatility.
FAQ
What is the maximum capacitive load the MAX4432ESA can drive without oscillation?
The MAX4432ESA can drive up to 47pF without sustained oscillations, as specified in the Absolute Maximum Ratings table. For loads exceeding 20pF, adding a 5Ω–50Ω series isolation resistor (RISO) at the output improves phase margin and suppresses ringing - a technique validated in Figure 3 of the MAX4432ESA datasheet. This design practice maintains stability while preserving 37ns 16-bit settling performance in ADC driver applications.
Does the MAX4432ESA support single-supply operation?
The MAX4432ESA is specified for dual-supply operation (±4.5V to ±5.5V), but it can function in single-supply configurations with proper input/output voltage referencing. Its input common-mode range extends to VEE + 2.5V and VCC – 0.9V, and output swing reaches VEE + 2.6V to VCC – 0.6V into 500Ω - allowing use with a 0V/10V rail split or mid-rail biasing. However, full 16-bit settling and 100dB SFDR are guaranteed only under dual-supply conditions per the datasheet test setup.
What is the input offset voltage matching between channels in the MAX4432ESA?
The MAX4432ESA guarantees ±0.25mV input offset voltage matching between its two amplifiers (INA+/INA− vs. INB+/INB−), as stated in the DC Electrical Characteristics table. This tight matching minimizes common-mode error in differential signal paths and enables accurate ratiometric measurements in bridge-based sensor interfaces - a key advantage over discrete single-op-amp solutions or less-matched dual amplifiers like the LM358.
How does the MAX4432ESA's slew rate compare to similar high-speed op amps?
The MAX4432ESA achieves a 100V/µs slew rate (typical) for 2V-step inputs, which is optimized for 16-bit settling rather than peak transient response. Unlike op amps rated solely on large-signal slew rate (e.g., THS3201 at 3000V/µs), the MAX4432ESA's 37ns settling time reflects its ability to resolve final 1 LSB accurately - a more relevant metric for ADC driver applications where fidelity matters more than raw edge speed.
Is the MAX4432ESA pin-compatible with other op amps in the SO-8 package?
The MAX4432ESA uses a nonstandard SO-8 pinout (OUTA, INA−, INA+, VEE, INB+, INB−, OUTB, VCC) that differs from industry-standard dual-op-amp layouts such as the LM358 or TL082. Direct replacement would require PCB layout revision. Engineers should verify pin mapping against the "Pin Configurations" diagram on page 1 of the MAX4432ESA datasheet before board-level integration.
MAX4432ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
MAX4432ESA FAQ
1.How can I place an order for MAX4432ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4432ESA 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 MAX4432ESA reliable?
The price and inventory of MAX4432ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4432ESA is usually 5 days.
3.What payment methods are accepted for MAX4432ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4432ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4432ESA?
MAX4432ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4432ESA 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 MAX4432ESA?
For technical support, including MAX4432ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4432ESA requirements.
6.How does Aetrix verify that MAX4432ESA is sourced from the original manufacturer or authorized distributors?
All MAX4432ESA 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 MAX4432ESA meets industry standards.
7.What is the process for return or replacement of MAX4432ESA?
All MAX4432ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4432ESA, 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 MAX4432ESA part is unused and in its original packaging.
Return procedure for MAX4432ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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