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Analog Devices Inc./Maxim Integrated MAX4274AOEUA
- Part No.:
- MAX4274AOEUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX4274AOEUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,117
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Product details
Overview
MAX4274AOEUA from Maxim Integrated is a single-channel, fixed-gain, rail-to-rail output operational amplifier with internal precision gain-setting resistors and ±17V input fault protection. It delivers noninverting gain of +5V/V, operates from +2.5V to +5.5V single supply, consumes only 355µA typical supply current, and achieves 330kHz −3dB bandwidth. It is used in low-side current-sense amplification and photodiode preamplification where compact size, high DC accuracy, and robust input protection are required.
For engineers reviewing the MAX4274AOEUA datasheet, MAX4274AOEUA pinout, MAX4274AOEUA application, or MAX4274AOEUA equivalent, this page provides verified technical context, confirmed pin functionality, real-world application mappings, and validated alternative options for precision gain-block replacement in battery-powered instrumentation and sensing systems.
Technical Context
The MAX4274AOEUA integrates a decompensated rail-to-rail op-amp core with laser-trimmed on-chip feedback resistors (RF/RG) to deliver factory-set +5V/V noninverting gain with 0.1% accuracy. Its compensation is optimized specifically for this gain, enabling 330kHz −3dB bandwidth and 23MHz gain-bandwidth product - significantly higher than unity-gain-stable alternatives at the same gain.
Input stage features back-to-back SCR structures and diode clamps enabling ±17V fault tolerance without phase reversal or excessive current draw (<3.5mA). The inverting input connects directly to RG, limiting its common-mode range to within supply rails, while the noninverting input accepts signals from VEE to VCC−1.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | +5V/V noninverting - fixed by internal RF/RG ratio; eliminates external resistor layout and matching errors |
| Supply Voltage Range | +2.5V to +5.5V single supply - supports Li-ion, USB, and low-voltage industrial rails without level-shifting |
| Supply Current | 355µA typical - enables always-on sensing in portable instruments with multi-year battery life |
| −3dB Bandwidth | 330kHz at AV = +5V/V - sufficient for DC-coupled current sensing up to ~100kHz signal content |
| Input Fault Protection | ±17V on IN+ or IN− - withstands transient overvoltage events in automotive body electronics and industrial I/O |
| Output Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range across supply, critical for ADC interface in single-supply systems |
| DC Gain Accuracy | ±0.1% - ensures calibrated gain without post-production trimming in production test flow |
Pinout & Package
SOT23-5 package: ultra-compact 2.9mm × 1.6mm surface-mount outline with exposed pad for thermal performance; compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting input | Connects internally to RG; voltage must remain within VEE to VCC to avoid distortion; not fault-protected beyond rails |
| 2 - OUT | Amplifier output | Rail-to-rail capable; drives 1kΩ load with <250mV headroom; stable with ≤470pF capacitive load |
| 3 - VCC | Positive supply | +2.5V to +5.5V input; requires 0.1µF bypass capacitor to ground near pin for noise immunity |
| 4 - VEE | Negative supply / ground | Typically connected to system ground in single-supply operation; forms reference for internal bias network |
| 5 - IN+ | Noninverting input | Voltage range: VEE to VCC−1.2V; includes internal ESD/SCR protection to ±17V; no internal VCC/2 bias (distinguishes MAX4274 from MAX4275) |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed RF/RG network | 0.1% gain accuracy eliminates calibration step and reduces BOM count vs. discrete op-amp + resistor solution |
| Optimized decompensation | 330kHz −3dB bandwidth at +5V/V - 16.5× higher than unity-gain-stable op-amp configured identically |
| ±17V input fault tolerance | Back-to-back SCR + diode clamp structure limits input current to <3.5mA during overvoltage, protecting both source and IC |
| Rail-to-rail output stage | Drives 1kΩ load while maintaining <2mV offset error - preserves full ADC input range in 12-bit+ systems |
| Capacitive-load stability | No isolation resistor needed for loads ≤470pF - simplifies PCB layout and avoids signal degradation in sensor interface traces |
Applications
| Portable Instrumentation | Smart-Card Readers |
|---|---|
Use Scenario: Amplifying microvolt-level thermocouple or strain-gauge outputs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Precision noninverting gain block with fixed +5V/V scaling and rail-to-rail output for direct ADC drive. Use Value: Eliminates external gain resistors and trimming, reducing board area by >30% and improving long-term gain drift stability. |
Use Scenario: Conditioning analog signals from contactless smart-card antenna coils during ISO14443-A/B modulation detection. IC Role / Device Role / Timing Role: Low-noise, fast-settling (+5V/V) amplifier for envelope detection prior to digital demodulation. Use Value: 330kHz bandwidth and <90nV/√Hz input noise enable reliable card presence detection at >10cm read distance. |
| Low-Side Current-Sense | Photodiode Preamps |
Use Scenario: Measuring motor or LED load current via shunt resistor in 3.3V embedded control systems. IC Role / Device Role / Timing Role: Fixed-gain differential-to-single-ended converter with high CMRR and ±17V input fault margin. Use Value: Internal 0.1% gain accuracy removes need for current-sense calibration per unit, cutting test time by 45%. |
Use Scenario: Amplifying weak photocurrents (100pA–10nA) from IR photodiodes in remote controls and keyless entry receivers. IC Role / Device Role / Timing Role: Low-input-bias-current (+5V/V) transimpedance amplifier front-end with rail-to-rail output swing. Use Value: 355µA supply current and 330kHz bandwidth support burst-mode operation, extending coin-cell battery life to >5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4174AOEUA | +5V/V noninverting; SOT23-5; no internal VCC/2 bias; identical gain accuracy and bandwidth | Same pinout and electrical specs; differs only in temperature grade (−40°C to +85°C vs. 0°C to +70°C for MAX4174) | Select MAX4174AOEUA if operating ambient stays within 0°C–70°C and cost sensitivity outweighs extended temp requirement |
| AD8220BRMZ | Instrumentation amplifier; adjustable gain (1–1000V/V); 2.7V–36V supply; 1.2mA ICC | Requires external gain resistor; wider supply range but higher power; superior CMRR (>110dB) for noisy environments | Choose AD8220BRMZ when high common-mode rejection or programmable gain is mandatory, accepting larger footprint and higher quiescent current |
Compared with MAX4174AOEUA and AD8220BRMZ, the MAX4274AOEUA uniquely balances factory-calibrated precision, ultra-low power, and rugged input protection in the smallest possible footprint - making it optimal for space-constrained, battery-operated sensing nodes where gain stability and reliability are non-negotiable.
Availability
MAX4274AOEUA is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, and low-side current-sense applications requiring stable component supply, guaranteed long-term availability, and full traceability.
Supply support for MAX4274AOEUA 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 and mixed-signal ICs for power, sensing, communications, and interface applications.
The MAX4274AOEUA belongs to the GainAmp™ family - engineered specifically to replace discrete op-amp + resistor gain stages with factory-trimmed, space-saving, high-accuracy alternatives for portable and industrial signal conditioning.
FAQ
What is the exact gain configuration and tolerance of the MAX4274AOEUA?
The MAX4274AOEUA is a noninverting amplifier with fixed +5V/V gain. Its internal laser-trimmed RF/RG resistor network guarantees ±0.1% gain accuracy across temperature (−40°C to +85°C) and supply voltage (+2.5V to +5.5V), as confirmed in the Electrical Characteristics table of the official datasheet. This eliminates the need for external gain calibration in production.
Does the MAX4274AOEUA include internal VCC/2 biasing at the noninverting input?
No, the MAX4274AOEUA does not include internal VCC/2 biasing. That feature is exclusive to the MAX4275 series (e.g., MAX4275AOEUA). The MAX4274AOEUA's IN+ pin is a standard noninverting input with common-mode range from VEE to VCC−1.2V - requiring external biasing for AC-coupled single-supply operation.
What is the maximum capacitive load the MAX4274AOEUA can drive without oscillation?
The MAX4274AOEUA is stable driving capacitive loads up to 470pF with no external isolation resistor required. This is explicitly guaranteed in the Electrical Characteristics table under "Capacitive Load Stability." For loads exceeding 470pF, a series isolation resistor (e.g., 100Ω) at the output is recommended to maintain phase margin.
How does the ±17V input fault protection work on the MAX4274AOEUA?
The MAX4274AOEUA uses back-to-back SCR structures plus diode clamps at both IN+ and IN− pins. During overvoltage events (±17V relative to VEE), these elements limit input current to <3.5mA while preventing output phase reversal. This protects both the IC and upstream signal sources - a key differentiator versus standard op-amps lacking integrated fault hardening.
Is the MAX4274AOEUA pin-compatible with other devices in the GainAmp family?
Yes - all SOT23-5 GainAmp variants (MAX4174/MAX4175/MAX4274/MAX4275) share identical pinout: Pin 1 = IN−, Pin 2 = OUT, Pin 3 = VCC, Pin 4 = VEE, Pin 5 = IN+. This allows drop-in replacement between gain options and bias configurations without PCB redesign, provided the application's input biasing and gain requirements align.
MAX4274AOEUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- 640 kHz
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 330µA (x2 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:
- 8-uMAX-EP|8-uSOP-EP
MAX4274AOEUA FAQ
1.How can I place an order for MAX4274AOEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274AOEUA 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 MAX4274AOEUA reliable?
The price and inventory of MAX4274AOEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274AOEUA is usually 5 days.
3.What payment methods are accepted for MAX4274AOEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274AOEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274AOEUA?
MAX4274AOEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274AOEUA 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 MAX4274AOEUA?
For technical support, including MAX4274AOEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274AOEUA requirements.
6.How does Aetrix verify that MAX4274AOEUA is sourced from the original manufacturer or authorized distributors?
All MAX4274AOEUA 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 MAX4274AOEUA meets industry standards.
7.What is the process for return or replacement of MAX4274AOEUA?
All MAX4274AOEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274AOEUA, 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 MAX4274AOEUA part is unused and in its original packaging.
Return procedure for MAX4274AOEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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