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Analog Devices Inc./Maxim Integrated MAX4430ESA+
- Part No.:
- MAX4430ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4430ESA+.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
The MAX4430ESA+ from Maxim Integrated is a single, dual-supply, unity-gain-stable voltage-feedback operational amplifier optimized for high-speed, low-distortion 16-bit ADC driving applications. 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 into 500Ω loads - enabling precise signal conditioning for ≥4Vp-p dynamic range data acquisition systems.
For engineers reviewing the MAX4430ESA+ datasheet, MAX4430ESA+ pinout, MAX4430ESA+ application, or MAX4430ESA+ equivalent, key selection criteria include its unity-gain stability, 180MHz bandwidth with 16-bit accuracy, SO-8 package compatibility, dual-supply operation (±4.5V to ±5.5V), and proven performance in high-resolution ADC front-end designs requiring ultra-low harmonic distortion and spurious-free dynamic range.
Technical Context
The MAX4430ESA+ employs a voltage-feedback architecture with internal unity-gain compensation, distinguishing it from current-feedback amplifiers while matching their speed and drive capability. Its 125dB open-loop gain and 100dB SFDR at 1MHz support precision DC-coupled gain stages and wideband AC-coupled signal paths without oscillation risk at AV = +1.
Designed for capacitive-load resilience, it maintains stability with up to 47pF load capacitance and supports output isolation resistor (RISO) compensation per layout requirements. The device operates across -40°C to +85°C with guaranteed CMRR >100dB and PSRR >75dB over 100kHz, ensuring robustness in mixed-signal industrial and instrumentation environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 180MHz at AV = +1 - enables full-power bandwidth for 14-/16-bit ADC sampling up to ~50MSPS with minimal gain error. |
| 16-Bit Settling Time | 37ns to 0.0015% - ensures accurate capture of fast transient signals before ADC conversion clock edge. |
| Input Voltage Noise | 2.8nV/√Hz at 100kHz - preserves SNR in low-level sensor and IF amplifier signal chains. |
| Output Drive Current | ±60mA into 500Ω - directly drives ADC inputs with ≥4Vp-p swing without external buffering. |
| Open-Loop Gain | 110dB (min) - provides high DC precision for closed-loop gain accuracy and linearity control. |
| Supply Voltage Range | ±4.5V to ±5.5V - supports standard dual-rail analog supply rails with margin for ripple and drop. |
| SFDR | 100dB at 1MHz, 4Vp-p - suppresses intermodulation distortion critical for multi-tone RF/IF receiver front ends. |
Pinout & Package
MAX4430ESA+ is housed in an 8-pin SO (SOIC-N) surface-mount package with standard 150mil width and 1.27mm pitch. Pin 1 is marked by a notch or dot; pins are numbered counterclockwise from top-left when viewing the top side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection (N.C.) | Internally unconnected; must remain floating or tied to ground only if required by PCB EMI mitigation - no functional role. |
| 2 | VCC | Positive power supply terminal; requires local 0.1µF ceramic bypass to ground for high-frequency stability. |
| 3 | OUT | Amplifier output; capable of ±60mA drive and rail-to-rail swing within VEE + 2.6V to VCC – 0.6V (at 500Ω). |
| 4 | N.C. | No Connection; electrically isolated - no routing or termination needed. |
| 5 | VEE | Negative power supply terminal; requires symmetric bypassing as VCC to maintain PSRR and common-mode rejection. |
| 6 | IN+ | Noninverting input; high-impedance node (1MΩ typical); matched bias current minimizes offset drift in precision configurations. |
| 7 | IN− | Inverting input; same impedance and bias characteristics as IN+; differential pair input stage enables balanced feedback design. |
| 8 | N.C. | No Connection; not internally bonded - leave unconnected per datasheet guidance. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit accurate settling in 37ns | Guarantees sub-LSB error for 16-bit ADCs sampling at ≥10MSPS, eliminating need for additional settling delay logic. |
| 100dB SFDR at 1MHz, 4Vp-p | Enables clean spectral performance in IF amplification and direct-conversion receiver chains without post-amplifier filtering. |
| 2.8nV/√Hz input voltage noise density | Preserves system SNR in low-amplitude preamplifier stages where thermal noise dominates, e.g., photodiode or piezoelectric sensor interfaces. |
| Unity-gain stable voltage-feedback architecture | Provides predictable phase margin and step response without external compensation, simplifying layout versus current-feedback alternatives. |
| ±60mA output drive into 500Ω | Directly drives switched-capacitor ADC inputs with ≥4Vp-p dynamic range, avoiding gain error and distortion from buffer stages. |
Applications
| High-Speed ADC Preamplifier | Low-Distortion Active Filter |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit, 50MSPS pipeline ADC in a medical ultrasound digitizer. IC Role / Device Role / Timing Role: Precision gain stage and charge reservoir that settles within 37ns to 0.0015% before sample-and-hold closure. Use Value: Maintains ENOB >15.2 bits by delivering 100dB SFDR and 2.8nV/√Hz noise - directly meeting ADC's analog input spec without cascaded op-amps. |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter preceding a 14-bit SAR ADC in test equipment. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate active filter stage with flat group delay and minimal phase distortion across 0–40MHz. Use Value: Achieves <−90dB THD+N at 10MHz due to 145V/µs slew rate and 180MHz bandwidth - preserving signal fidelity through filter passband. |
| IF Amplifier for Communications | Precision Instrumentation Signal Chain |
|
Use Scenario: Intermediate-frequency amplification in a 70MHz LTE base station receiver with 20MHz channel bandwidth. IC Role / Device Role / Timing Role: Fixed-gain, low-distortion IF buffer between mixer and demodulator, operating at AV = +1 with 180MHz bandwidth. Use Value: Delivers 100dB SFDR at 70MHz center frequency - suppressing adjacent-channel interference without image-reject filtering overhead. |
Use Scenario: Low-drift, high-linearity gain block in a portable battery-powered digital multimeter front end. IC Role / Device Role / Timing Role: DC-coupled, unity-gain inverting amplifier with 125dB open-loop gain and 7µV/°C offset drift for µV-level measurements. Use Value: Enables 6½-digit resolution via 110dB min open-loop gain and 100dB CMRR - reducing calibration burden and improving long-term stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-distortion op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8001ARZ | Higher 800MHz bandwidth but lower 92dB SFDR at 1MHz; 3.5nV/√Hz noise; requires gain ≥2 for stability. | Better for >100MHz small-signal amplification; less suitable for unity-gain ADC driver or low-distortion 4Vp-p output stages. | Select AD8001ARZ only when bandwidth >500MHz is mandatory and SFDR >95dB is not required. |
| LMH6629MA/NOPB | 2.1nV/√Hz noise, 1.5GHz GBW, but 115dB open-loop gain (lower than MAX4430ESA+'s 125dB); not unity-gain stable. | Superior noise performance for ultra-low-level signals; requires minimum gain of +5, limiting use in unity-gain buffer roles. | Choose LMH6629MA/NOPB for sub-2nV/√Hz noise-critical preamps where gain ≥5 is acceptable and layout allows compensation. |
Compared with AD8001ARZ and LMH6629MA/NOPB, the MAX4430ESA+ uniquely combines unity-gain stability, 100dB SFDR, and 2.8nV/√Hz noise in an SO-8 package - making it the only option among the three qualified for direct-coupled, high-fidelity 16-bit ADC input driving without gain constraints or external compensation.
Availability
MAX4430ESA+ is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply, long-lifecycle availability, and traceable sourcing for production programs.
Supply support for MAX4430ESA+ 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 consumer applications.
The MAX4430–MAX4433 family was designed specifically for high-speed, low-distortion signal conditioning in 14- and 16-bit data converter interfaces - emphasizing 16-bit settling accuracy, wide output swing, and robust capacitive-load driving capability.
FAQ
What is the maximum capacitive load the MAX4430ESA+ can drive without oscillation?
The MAX4430ESA+ remains stable with up to 47pF of capacitive load at the output without external isolation components. For loads exceeding this value, a series isolation resistor (RISO) is recommended to restore phase margin - typical values range from 5Ω to 50Ω depending on load size and layout parasitics. This behavior is verified in the datasheet's Typical Operating Characteristics (Figure 17).
Does the MAX4430ESA+ support single-supply operation?
No, the MAX4430ESA+ is specified exclusively for dual-supply operation across ±4.5V to ±5.5V. Its input common-mode range extends from VEE + 2.5V to VCC – 0.9V, and output swing is rail-to-rail within VEE + 2.6V to VCC – 0.6V (at 500Ω). Single-supply use would violate absolute maximum ratings and invalidate all AC/DC specifications.
What is the guaranteed open-loop gain for the MAX4430ESA+ over temperature?
The MAX4430ESA+ guarantees a minimum open-loop gain of 110dB over the full operating temperature range of -40°C to +85°C, measured with VEE + 2.5V ≤ VOUT ≤ VCC – 0.9V and RL = 10kΩ to ground. At +25°C, typical open-loop gain is 125dB - supporting high-precision closed-loop gain accuracy even under worst-case thermal conditions.
How does the MAX4430ESA+ compare to the MAX4431ESA+ in terms of bandwidth and stability?
The MAX4430ESA+ is unity-gain stable with 180MHz small-signal -3dB bandwidth, while the MAX4431ESA+ is compensated for gains ≥+2 and achieves 215MHz bandwidth. Both share identical pinout in SO-8 packaging, but using MAX4431ESA+ at AV = +1 risks instability. The MAX4430ESA+ is the correct choice for unity-gain buffers and ADC drivers requiring unconditional stability at AV = +1.
Is the MAX4430ESA+ RoHS-compliant and lead-free?
Yes, the MAX4430ESA+ is RoHS-compliant and lead-free per Maxim Integrated's standard packaging. The "+" suffix in the part number denotes lead-free, halogen-free, and RoHS-compliant construction. Full compliance documentation, including material declarations and test reports, is available through Analog Devices' product page for MAX4430ESA+.
MAX4430ESA+ 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:
- Last Time Buy
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- 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
- 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
MAX4430ESA+ FAQ
1.How can I place an order for MAX4430ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4430ESA+ 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 MAX4430ESA+ reliable?
The price and inventory of MAX4430ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4430ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4430ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4430ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4430ESA+?
MAX4430ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4430ESA+ 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 MAX4430ESA+?
For technical support, including MAX4430ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4430ESA+ requirements.
6.How does Aetrix verify that MAX4430ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4430ESA+ 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 MAX4430ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4430ESA+?
All MAX4430ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4430ESA+, 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 MAX4430ESA+ part is unused and in its original packaging.
Return procedure for MAX4430ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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