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Analog Devices Inc./Maxim Integrated MAX4274BNEUA+T
- Part No.:
- MAX4274BNEUA+T
- 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:
-
MAX4274BNEUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,794
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Product details
Overview
MAX4274BNEUA+T 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 0.1% gain accuracy, operates from +2.5V to +5.5V, consumes only 300µA, and supports noninverting gains up to +101V/V - ideal for low-power portable instrumentation and precision current-sense amplification.
For engineers reviewing the MAX4274BNEUA+T datasheet, MAX4274BNEUA+T pinout, MAX4274BNEUA+T application, or MAX4274BNEUA+T equivalent, key selection criteria include guaranteed DC gain accuracy, capacitive-load stability up to 470pF, rail-to-rail output swing into 1kΩ, GBW optimization per gain setting, and VCC/2 biasing compatibility (for MAX4275 variants).
Technical Context
The MAX4274BNEUA+T integrates a decompensated rail-to-rail op-amp core with laser-trimmed on-chip feedback resistors (RF/RG), enabling factory-set noninverting gains from +1.25V/V to +101V/V. Its compensation is optimized per gain group - e.g., +25V/V to +101V/V versions achieve up to 23MHz GBW product - maximizing usable bandwidth without external compensation.
Input structure includes back-to-back SCR clamps and diode-based rail clamping at both IN+ and IN−, allowing ±17V fault tolerance relative to VEE while limiting input current to <3.5mA. The inverting input connects directly to RG, requiring input signals to remain within supply rails to avoid distortion.
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 systems without level-shifting. |
| Supply Current | 300µA typical - supports always-on sensing nodes with multi-year battery life in IoT edge devices. |
| Gain Accuracy | ±0.1% (RF/RG) - eliminates need for external trimming or calibration in production test for medical sensor front-ends. |
| GBW Product | Up to 23MHz (AV = +25V/V to +101V/V) - sustains >200kHz closed-loop bandwidth even at AV = +100V/V. |
| Capacitive Load Stability | Stable up to 470pF - drives ADC input filters or long PCB traces without isolation resistor or phase-margin compensation. |
| Input Fault Protection | Withstands ±17V at IN+/IN− - protects against ESD, hot-plug transients, and sensor cable faults in industrial interfaces. |
| Output Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range across entire supply, critical for 12-bit+ SAR ADC interfacing. |
Pinout & Package
MAX4274BNEUA+T is housed in a 5-pin SOT23 package (JEDEC MO-178AA), with exposed pad for thermal enhancement and standard footprint compatibility across GainAmp family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input terminal | Connected internally to RG; must stay within VEE to VCC to prevent clipping or distortion - not fault-tolerant beyond rails. |
| 2 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ load with <250mV headroom at both rails; stable with ≤470pF capacitive load. |
| 3 (VEE) | Negative supply / ground reference | Ground pin for single-supply operation; forms return path for bias currents and output load current. |
| 4 (VCC) | Positive supply | +2.5V to +5.5V input; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for noise immunity. |
| 5 (IN+) | Noninverting input terminal | Internally unconnected to bias network in MAX4274 (vs. MAX4275); accepts DC- or AC-coupled signals referenced to VEE or VCC/2 externally. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed RF/RG resistors | 0.1% gain accuracy eliminates external resistor matching tolerances and layout sensitivity in gain-critical signal chains. |
| Gain-optimized decompensation | Five discrete compensation settings maximize GBW per gain group - e.g., +100V/V achieves 230kHz −3dB BW vs. ~20kHz for unity-gain-stable op-amps. |
| ±17V input fault protection | SCR + diode clamp architecture limits input current to <3.5mA during overvoltage events - avoids system-level latch-up or damage in field-deployed equipment. |
| Rail-to-rail output stage | Delivers full-scale swing (VEE + 25mV to VCC − 25mV) into 1kΩ - preserves SNR when driving low-input-impedance ADCs or analog muxes. |
| 470pF capacitive-load stability | No external isolation resistor required for common anti-aliasing or EMI filter configurations - simplifies layout and reduces BOM count. |
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 stage with fixed +10V/V or +25V/V configuration, providing DC-coupled signal conditioning before 16-bit sigma-delta ADC. Use Value: 0.1% gain accuracy ensures calibrated measurement traceability without per-unit trim; 300µA quiescent current extends battery life beyond 12 months. |
Use Scenario: Conditioning analog voltage pulses from ISO 7816 smart-card interface lines during card insertion and power-up sequences. IC Role / Device Role / Timing Role: Fast-settling (+1.25V/V or +3V/V) inverting amplifier capturing transient card response waveforms with <7µs 0.01% settling time. Use Value: 23MHz GBW and rail-to-rail output enable accurate capture of 1–5MHz card clock harmonics without slew-induced distortion. |
| Low-Side Current-Sense | Photodiode Preamps |
Use Scenario: Measuring motor-phase or battery-pack current via shunt resistor in battery management systems (BMS) and motor controllers. IC Role / Device Role / Timing Role: Fixed-gain inverting amplifier (e.g., −10V/V or −20V/V) converting mV-level shunt voltage to 0–3.3V ADC input range. Use Value: ±17V input fault tolerance withstands load-dump transients; rail-to-rail output ensures full ADC utilization even at low VCC (2.5V). |
Use Scenario: Amplifying nanoamp-level photocurrents from PIN photodiodes in optical smoke detectors and IR remote receivers. IC Role / Device Role / Timing Role: Transimpedance amplifier configured with external feedback resistor and MAX4274BNEUA+T as low-noise, low-drift voltage gain block. Use Value: 90nV/√Hz input voltage noise and <10pA input bias current preserve signal integrity for weak-light detection; 470pF stability supports integrated feedback capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4174EUK+T | SOT23-5, same GainAmp architecture but rated for −40°C to +85°C (vs. MAX4274BNEUA+T's −40°C to +125°C), lower max operating temperature. | Not qualified for under-hood automotive or high-temp industrial enclosures where MAX4274BNEUA+T's +125°C rating is required. | Select MAX4174EUK+T only for cost-sensitive commercial-grade portable instruments with ambient <85°C. |
| AD8220BRMZ | Instrumentation amplifier (INA) with adjustable gain (1–1000V/V), higher input impedance (>10GΩ), but 1.2mA supply current and SO-8 package. | Supports differential sensing and common-mode rejection; unsuitable for space-constrained SOT23 layouts or ultra-low-power designs. | Choose AD8220BRMZ when measuring high-impedance sources or rejecting noisy common-mode signals - not for fixed-gain, low-IQ, or small-footprint use cases. |
Compared with MAX4174EUK+T, MAX4274BNEUA+T offers extended temperature range and identical gain accuracy; compared with AD8220BRMZ, it trades programmable gain and CMRR for 75% lower supply current, SOT23 size, and fixed-gain simplicity in known-ratio signal chains.
Availability
MAX4274BNEUA+T is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, and low-side current-sense applications requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature.
Supply support for MAX4274BNEUA+T 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, medical, and communications applications.
The MAX4274BNEUA+T belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace discrete op-amp-plus-resistor circuits with factory-trimmed, space-saving, and specification-guaranteed alternatives for signal conditioning in resource-constrained systems.
FAQ
What is the operating temperature range of the MAX4274BNEUA+T?
The MAX4274BNEUA+T is specified for operation from −40°C to +125°C. This extended industrial temperature range makes it suitable for under-hood automotive modules, industrial PLC I/O cards, and high-ambient portable test equipment where thermal margins exceed standard commercial-grade amplifiers. All electrical characteristics in the datasheet are guaranteed across this full range.
Does the MAX4274BNEUA+T include internal VCC/2 biasing at the noninverting input?
No, the MAX4274BNEUA+T does not include internal VCC/2 biasing. That feature is exclusive to the MAX4275 variant (e.g., MAX4275BNEUA+T). The MAX4274BNEUA+T has an uncommitted IN+ pin, requiring external biasing for single-supply AC-coupled applications - making it appropriate for DC-coupled designs like precision current sensing where ground-referenced inputs are used.
What gain options are available for the MAX4274BNEUA+T?
The MAX4274BNEUA+T offers 54 standard noninverting gains ranging from +1.25V/V to +101V/V, and inverting gains from −0.25V/V to −100V/V. Specific gain is encoded in the top-mark and orderable part number suffix (e.g., "B" denotes +5V/V). Full gain selection is documented in Maxim's Gain Selection Guide, with each variant individually compensated for optimal bandwidth and stability.
Can the MAX4274BNEUA+T drive a 1000pF capacitive load?
The MAX4274BNEUA+T is guaranteed stable with capacitive loads up to 470pF without external compensation. Driving 1000pF requires an isolation resistor (typically 50–100Ω) in series with the output to restore phase margin - as shown in Figure 9 of the datasheet. Without this resistor, oscillation or excessive overshoot may occur, compromising signal fidelity in anti-aliasing or EMI filter applications.
How does the ±17V input fault protection work on the MAX4274BNEUA+T?
The MAX4274BNEUA+T implements ±17V input fault protection using back-to-back SCR structures at IN+ and IN−, combined with diode clamps to VCC and VEE. During overvoltage, SCR conduction limits pin current to <3.5mA while preventing output phase reversal. This protects both the amplifier and upstream sensors or signal sources from damage due to ESD, cable faults, or power-rail transients - without requiring external TVS diodes in many cases.
MAX4274BNEUA+T 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:
- Tape & Reel (TR)
- 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:
- 230 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
MAX4274BNEUA+T FAQ
1.How can I place an order for MAX4274BNEUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274BNEUA+T 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 MAX4274BNEUA+T reliable?
The price and inventory of MAX4274BNEUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274BNEUA+T is usually 5 days.
3.What payment methods are accepted for MAX4274BNEUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274BNEUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274BNEUA+T?
MAX4274BNEUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274BNEUA+T 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 MAX4274BNEUA+T?
For technical support, including MAX4274BNEUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274BNEUA+T requirements.
6.How does Aetrix verify that MAX4274BNEUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4274BNEUA+T 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 MAX4274BNEUA+T meets industry standards.
7.What is the process for return or replacement of MAX4274BNEUA+T?
All MAX4274BNEUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274BNEUA+T, 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 MAX4274BNEUA+T part is unused and in its original packaging.
Return procedure for MAX4274BNEUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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