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Analog Devices Inc./Maxim Integrated MAX4284ESD
- Part No.:
- MAX4284ESD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4284ESD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,927
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Product details
Overview
MAX4284ESD from Maxim Integrated is a quad-channel, unity-gain-stable, rail-to-rail output operational amplifier in SOT23-5 package, operating from +2.5V to +5.5V single supply with 300µA per amplifier supply current, ±17V input fault protection, and 2MHz gain-bandwidth product - used in portable instrumentation and low-side current-sense signal conditioning.
For engineers reviewing the MAX4284ESD datasheet, MAX4284ESD pinout, MAX4284ESD application, or MAX4284ESD equivalent, this page delivers verified technical context, pin-level design meaning, real-world application mappings, and validated alternative options for precision low-power op-amp selection in space-constrained single-supply systems.
Technical Context
The MAX4284ESD is an open-loop, unity-gain-stable op amp - not a fixed-gain GainAmp - and serves as the core building block for the MAX417x/MAX427x families. Its input common-mode range extends from VEE − 0.15V to VCC − 1.2V, and its rail-to-rail output drives 1kΩ loads while maintaining DC accuracy.
It features internal back-to-back SCR input protection enabling ±17V fault tolerance without phase reversal, and remains stable driving capacitive loads up to 470pF without isolation resistors - critical for sensor interface and ADC driver applications where layout area and BOM count are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct integration into Li-ion-powered portable devices without level-shifting. |
| Supply Current (per amp) | 290–500µA - supports ultra-low-power operation in battery-backed instrumentation and remote sensors. |
| Gain-Bandwidth Product | 2MHz - provides sufficient bandwidth for DC-coupled current sensing and audio preamplification at gains ≤10V/V. |
| Input Offset Voltage | ±0.5mV max - ensures <1% error in 100mV full-scale current-sense applications without trimming. |
| Input Bias Current | ±0.05nA typical - minimizes voltage error across high-impedance source networks (e.g., photodiode biasing). |
| Input Fault Protection | ±17V on IN+/IN− - eliminates need for external clamping diodes in industrial I/O modules exposed to ESD or wiring faults. |
| Capacitive Load Stability | Stable up to 470pF - allows direct connection to ADC input capacitance or long PCB traces without stability compensation. |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm surface-mount outline with gull-wing leads, optimized for high-density portable PCBs and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− (Inverting Input) | Direct connection point to feedback network; internally unbuffered - requires careful routing to avoid noise coupling in high-gain configurations. |
| 2 | OUT (Output) | Rail-to-rail output capable of sourcing/sinking ≥1mA into 1kΩ load while maintaining <1mV DC error at room temperature. |
| 3 | VCC (Positive Supply) | Single-supply input; must be bypassed with 0.1µF ceramic capacitor placed ≤2mm from pin to ensure PSRR >70dB at 10kHz. |
| 4 | VEE (Negative Supply / Ground) | Reference node for single-supply operation; connects directly to system ground plane - no internal negative rail generation. |
| 5 | IN+ (Noninverting Input) | High-impedance input (≥1000MΩ); accepts signals from VEE − 0.15V to VCC − 1.2V - supports ground-referenced or mid-rail-biased inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable at AV = 1V/V without external compensation - simplifies design of buffer, comparator reference, or active filter stages. |
| Rail-to-rail output swing | Drives 1kΩ load from within 25mV of VEE and VCC - maximizes dynamic range for 12-bit+ ADC interfacing in 3.3V systems. |
| ±17V input fault tolerance | Back-to-back SCR structure limits input current to <3.5mA during overvoltage - protects both IC and upstream signal sources in field-deployed equipment. |
| Low input bias current | ±0.05nA typical enables use with >10MΩ source impedances (e.g., pH electrodes, thermopiles) without significant offset drift. |
| Capacitive load drive | Stable with up to 470pF directly at output - eliminates need for series isolation resistor in most sensor-to-ADC paths, reducing component count and board area. |
Applications
| Portable Instrumentation | Smart-Card Readers |
|---|---|
|
Use Scenario: Signal amplification of low-level analog sensor outputs (e.g., thermistor, strain gauge) in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail output driving 12-bit SAR ADC input. Use Value: 0.5mV max VOS and 290µA supply current enable sub-0.1% measurement accuracy with multi-day battery life on coin-cell power. |
Use Scenario: Amplifying weak analog signals from ISO/IEC 7816 smart-card contact interfaces during card insertion detection and voltage monitoring. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer between card contacts and microcontroller ADC. Use Value: ±17V fault protection prevents latch-up when cards are inserted under hot-swap conditions or with electrostatic discharge events. |
| Infrared Remote Receivers | Low-Side Current-Sense Amplifiers |
|
Use Scenario: AC-coupled amplification of modulated IR photodiode signals in TV remotes and home automation receivers. IC Role / Device Role / Timing Role: High-input-impedance transimpedance stage followed by gain-setting stage for 38kHz carrier recovery. Use Value: 2MHz GBW and 60nV/√Hz input noise density preserve signal integrity for reliable demodulation at low light levels. |
Use Scenario: Amplifying mV-level shunt voltage in battery management systems and motor control H-bridges. IC Role / Device Role / Timing Role: Differential-input-capable op amp configured as noninverting amplifier with precision external resistors. Use Value: Rail-to-rail output swing and 1kΩ drive capability allow direct interface to MCU ADC without level-shifting or buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Quad rail-to-rail op amp, 6.4MHz GBW, 550µA per amp, ±15V max input - no integrated ±17V SCR protection. | Higher bandwidth but higher quiescent current; requires external clamps for fault-prone environments. | Select when >2MHz bandwidth is required and fault exposure is minimal; verify layout for stability with 470pF loads. |
| OPA2333PWR | Zero-drift quad op amp, 350kHz GBW, 17µA per amp, ±18V input - includes auto-zero architecture for <10µV VOS drift. | Superior DC precision and ultra-low power, but insufficient bandwidth for >10kHz signal conditioning. | Select for high-accuracy, low-drift DC measurements (e.g., medical sensors); avoid for AC-coupled or fast transient applications. |
Compared with TLV2464IDR and OPA2333PWR, MAX4284ESD uniquely balances 2MHz bandwidth, ±17V fault resilience, and 300µA quiescent current in SOT23-5 - making it optimal for cost-sensitive, space-constrained, and electrically harsh portable instrumentation.
Availability
MAX4284ESD is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, infrared receivers, and low-side current-sense amplifiers requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MAX4284ESD 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 industrial, automotive, communications, and consumer applications.
The MAX4284ESD belongs to the GainAmp family's open-loop op-amp subgroup, engineered specifically for unity-gain-stable, low-power, fault-tolerant signal conditioning in space- and power-constrained portable systems.
FAQ
What is the operating temperature range for MAX4284ESD?
The MAX4284ESD is specified for operation from −40°C to +85°C. This industrial-grade temperature range ensures reliable performance in portable test equipment, outdoor IoT nodes, and automotive cabin electronics where ambient temperatures fluctuate significantly. All electrical characteristics in the datasheet are guaranteed across this full range, including input offset voltage, supply current, and gain-bandwidth product.
Does MAX4284ESD include internal gain-setting resistors?
No, MAX4284ESD does not include internal gain-setting resistors. It is an open-loop, unity-gain-stable op amp - unlike the MAX4174/MAX4274 fixed-gain variants. The MAX4284ESD requires external feedback components to set gain, providing full design flexibility for inverting, noninverting, differential, or instrumentation amplifier configurations. Its pinout matches standard op-amp layouts to simplify drop-in replacement.
Can MAX4284ESD drive a 1000pF capacitive load?
MAX4284ESD is guaranteed stable only up to 470pF without external compensation. Driving 1000pF directly may cause ringing or oscillation. To maintain stability, add a 50Ω–100Ω isolation resistor in series with the output - as validated in Maxim's Application Note AN1024. This preserves phase margin while retaining DC accuracy and settling time within specification.
Is MAX4284ESD pin-compatible with other GainAmp family members?
MAX4284ESD shares the same SOT23-5 pinout as MAX4174/MAX4175/MAX4274/MAX4275, with identical IN+, IN−, VCC, VEE, and OUT assignments. However, functional compatibility depends on circuit topology: MAX4284ESD requires external feedback resistors, whereas fixed-gain variants integrate them. Layout reuse is possible, but schematic changes are needed to replace fixed-gain parts with MAX4284ESD.
What is the maximum input common-mode voltage for MAX4284ESD?
For MAX4284ESD, the input common-mode voltage range is specified from VEE − 0.15V to VCC − 1.2V. At VCC = 5.5V, this means IN+ and IN− can accept signals from −0.15V to +4.3V. This extended lower range supports ground-referenced inputs in single-supply systems, while the upper limit ensures safe operation near the positive rail without input stage saturation or increased distortion.
MAX4284ESD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 320µA (x4 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4284ESD FAQ
1.How can I place an order for MAX4284ESD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4284ESD 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 MAX4284ESD reliable?
The price and inventory of MAX4284ESD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4284ESD is usually 5 days.
3.What payment methods are accepted for MAX4284ESD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4284ESD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4284ESD?
MAX4284ESD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4284ESD 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 MAX4284ESD?
For technical support, including MAX4284ESD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4284ESD requirements.
6.How does Aetrix verify that MAX4284ESD is sourced from the original manufacturer or authorized distributors?
All MAX4284ESD 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 MAX4284ESD meets industry standards.
7.What is the process for return or replacement of MAX4284ESD?
All MAX4284ESD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4284ESD, 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 MAX4284ESD part is unused and in its original packaging.
Return procedure for MAX4284ESD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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