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Analog Devices Inc./Maxim Integrated MAX4284EEE
- Part No.:
- MAX4284EEE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX4284EEE.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,320
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Product details
Overview
MAX4284EEE 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, 2MHz gain-bandwidth product, and ±17V input fault protection. It serves as the open-loop core for GainAmp fixed-gain families in portable instrumentation and low-side current-sense applications.
For engineers reviewing the MAX4284EEE datasheet, MAX4284EEE pinout, MAX4284EEE application, or MAX4284EEE equivalent, key selection criteria include its unity-gain stability, rail-to-rail output swing into 1kΩ, 2MHz GBW, ±17V fault-tolerant inputs, and compatibility with capacitive loads up to 470pF without isolation resistors.
Technical Context
The MAX4284EEE is a quad open-loop op amp optimized for unity-gain stability with internal compensation yielding 2MHz GBW. Its input common-mode range extends from 150mV below VEE to within 1.2V of VCC, and outputs swing rail-to-rail while driving 1kΩ loads with <2mV VOH/VOL error.
It features 1000MΩ input resistance, ±0.05nA typical input bias current, ±0.5mV input offset voltage (max), and stable operation with capacitive loads ≤470pF - eliminating need for external isolation resistors in most sensor interface designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +2.5V to +5.5V single supply - enables direct use in Li-ion and 3.3V/5V systems without level-shifting. |
| Gain-Bandwidth Product | 2MHz - supports stable unity-gain operation with sufficient bandwidth for DC-coupled sensor amplification and signal conditioning. |
| Supply Current per Amp | 290–450µA - allows battery-powered quad-channel operation with sub-2mA total quiescent draw. |
| Input Common-Mode Range | VEE − 0.15V to VCC − 1.2V - accommodates near-rail input signals in single-supply configurations. |
| Output Voltage Swing | Within 2mV of rails into 1kΩ - delivers full dynamic range for ADC interfacing and precision analog output stages. |
| Capacitive Load Stability | Up to 470pF - eliminates need for series isolation resistor when driving ADC input capacitance or long traces. |
| Input Fault Protection | ±17V on IN+/IN− - prevents latch-up or damage during transient overvoltage events in industrial or automotive environments. |
Pinout & Package
SOT23-5 package: compact 5-pin surface-mount outline with exposed pad option (not applicable to MAX4284EEE per datasheet); footprint compatible with standard SOT23 pick-and-place equipment and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Direct connection point to feedback network; internally tied to RG resistor; must remain within supply rails to avoid distortion. |
| 2 (IN+) | Noninverting Input | High-impedance node; accepts DC- or AC-coupled signals; protected by back-to-back SCR and clamp diodes. |
| 3 (OUT) | Amplifier Output | Rail-to-rail capable output stage; drives 1kΩ load with <2mV headroom; stable with ≤470pF capacitive load. |
| 4 (VCC) | Positive Supply | Accepts +2.5V to +5.5V; requires local 0.1µF bypass capacitor to ground for noise suppression. |
| 5 (VEE) | Negative Supply / Ground | Reference for single-supply operation (typically GND); supports dual-supply use down to −2.75V. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Guarantees stable closed-loop operation at AV = 1 without external compensation components. |
| Rail-to-rail output swing | Delivers full-scale signal amplitude into 1kΩ, maximizing SNR when interfacing with 12-bit+ SAR ADCs. |
| ±17V input fault tolerance | Enables robust front-end design in noisy environments without external TVS or series limiting resistors. |
| 470pF capacitive load stability | Supports direct connection to ADC input capacitance (typically 10–30pF) and PCB trace capacitance without ringing. |
| Low 300µA supply current | Permits four independent channels in space-constrained portable instruments with minimal thermal impact. |
Applications
| Portable Instrumentation | Smart-Card Readers |
|---|---|
Use Scenario: Signal conditioning of thermistor, RTD, or bridge sensor outputs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Quad-channel open-loop op amp providing gain, filtering, and buffer stages before ADC sampling. Use Value: Rail-to-rail output swing preserves full sensor dynamic range; low quiescent current extends battery life beyond 100 hours. |
Use Scenario: Amplifying weak analog signals from ISO/IEC 7816 contact interfaces and RF field detection circuits. IC Role / Device Role / Timing Role: Low-noise, fast-settling amplifier for card presence detection and voltage-level translation. Use Value: ±17V input fault protection prevents damage during hot-plug events; 2MHz GBW ensures clean pulse response for 106kbps communication. |
| Infrared Remote Receivers | Low-Side Current-Sense Amplifiers |
Use Scenario: Amplifying photodiode current pulses from IR remote control receivers with ambient light rejection. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end with adjustable gain and high CMRR. Use Value: 1000MΩ input resistance minimizes loading on high-impedance photodiode; 470pF stability avoids oscillation with photodiode junction capacitance. |
Use Scenario: Measuring load current via shunt resistor in power management ICs and motor drivers. IC Role / Device Role / Timing Role: Precision differential amplifier with rail-to-rail output for bidirectional current sensing. Use Value: Input common-mode range down to VEE − 0.15V enables accurate sensing near ground; ±17V fault tolerance guards against load dump transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar open-loop op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4282EEE | Dual-channel version in same SOT23-5 package; identical electrical specs per channel. | Preferred where only two amplifiers are needed - reduces board area and BOM count vs. quad. | Select MAX4282EEE for dual-channel designs requiring identical performance with lower channel density. |
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C offset drift vs. ±5µV/°C for MAX4284EEE; higher 350µA supply current. | Better for precision DC measurements over temperature; less suitable for wideband AC-coupled IR receiver use. | Choose OPA2333AIDR only when microvolt-level offset stability across −40°C to +85°C is required. |
Compared with MAX4282EEE and OPA2333AIDR, the MAX4284EEE provides optimal balance of quad-channel integration, fault protection, and capacitive-load stability for cost-sensitive portable instrumentation - without zero-drift complexity or dual-channel underutilization.
Availability
MAX4284EEE is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, infrared remote receivers, and low-side current-sense amplifiers requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing.
Supply support for MAX4284EEE 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 MAX4284EEE belongs to the GainAmp family's open-loop op amp line, designed specifically to serve as the stable, rail-to-rail core for fixed-gain amplifiers and as a drop-in replacement for discrete op-amp-plus-resistor configurations in space-constrained designs.
FAQ
What is the maximum capacitive load the MAX4284EEE can drive without oscillation?
The MAX4284EEE is specified stable with capacitive loads up to 470pF without requiring an external isolation resistor. This capability simplifies layout in ADC driver and sensor interface applications where trace and input capacitance accumulate. Exceeding 470pF may cause peaking or ringing; for >470pF loads, a series isolation resistor (e.g., 50–100Ω) between OUT and the load restores stability. The MAX4284EEE datasheet confirms this limit under "Capacitive Load Stability" in the Electrical Characteristics table.
Does the MAX4284EEE support dual-supply operation?
Yes, the MAX4284EEE operates from ±1.25V to ±2.75V dual supplies, in addition to its primary +2.5V to +5.5V single-supply range. When used in dual-supply mode, VEE is connected to the negative rail (e.g., −2.5V) and VCC to the positive rail (e.g., +2.5V). Input common-mode range extends to VEE − 0.15V and VCC − 1.2V, enabling ground-referenced signal processing. Bypass capacitors must be placed from each supply to ground.
What is the input offset voltage specification for the MAX4284EEE?
The MAX4284EEE has a maximum input offset voltage of ±2mV over the full −40°C to +85°C operating temperature range, with a typical value of ±0.5mV at +25°C. This specification is guaranteed in the "ELECTRICAL CHARACTERISTICS-MAX4281/MAX4282/MAX4284 Open-Loop Op Amps" table. Unlike zero-drift amplifiers, it does not feature auto-zeroing, so offset drift is ±5µV/°C - appropriate for moderate-precision applications but not ultra-low-drift requirements.
Is the MAX4284EEE pin-compatible with other GainAmp family members like MAX4174 or MAX4275?
No - the MAX4284EEE is not pin-compatible with fixed-gain GainAmp variants (e.g., MAX4174, MAX4275) despite sharing the SOT23-5 package. Fixed-gain versions integrate internal RF/RG resistors and route IN− through RG, altering functional pin behavior. The MAX4284EEE is an open-loop op amp with standard op-amp pinout (IN−, IN+, OUT, VCC, VEE), whereas MAX4174 places RG between IN− and VEE. Board redesign is required for substitution.
What is the purpose of the ±17V input fault protection in the MAX4284EEE?
±17V input fault protection in the MAX4284EEE uses back-to-back SCR structures and clamp diodes at IN+ and IN− to safely shunt overvoltage transients without damaging the input stage. During faults, current is limited to <3.5mA per pin by internal 5kΩ (IN+) and RG (IN−) resistors. This allows reliable operation in environments prone to ESD, inductive kickback, or connector hot-plug events - such as portable test equipment or industrial sensor nodes - without external protection components.
MAX4284EEE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 16-SSOP (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:
- 16-QSOP
MAX4284EEE FAQ
1.How can I place an order for MAX4284EEE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4284EEE 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 MAX4284EEE reliable?
The price and inventory of MAX4284EEE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4284EEE is usually 5 days.
3.What payment methods are accepted for MAX4284EEE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4284EEE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4284EEE?
MAX4284EEE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4284EEE 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 MAX4284EEE?
For technical support, including MAX4284EEE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4284EEE requirements.
6.How does Aetrix verify that MAX4284EEE is sourced from the original manufacturer or authorized distributors?
All MAX4284EEE 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 MAX4284EEE meets industry standards.
7.What is the process for return or replacement of MAX4284EEE?
All MAX4284EEE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4284EEE, 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 MAX4284EEE part is unused and in its original packaging.
Return procedure for MAX4284EEE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4284EEE Tags
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