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Analog Devices Inc./Maxim Integrated MAX4274AKEUA+T
- Part No.:
- MAX4274AKEUA+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:
-
MAX4274AKEUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,272
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Product details
Overview
MAX4274AKEUA+T from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal precision resistors, delivering +5V/V gain accuracy of ±0.1%, rail-to-rail output swing driving 1kΩ, and operation from +2.5V to +5.5V supply. It features ±17V input fault protection and is optimized for low-side current-sense and photodiode preamplifier applications in portable instrumentation.
For engineers reviewing the MAX4274AKEUA+T datasheet, MAX4274AKEUA+T pinout, MAX4274AKEUA+T application, or MAX4274AKEUA+T equivalent, key selection criteria include guaranteed DC gain accuracy, capacitive-load stability up to 470pF, single-supply rail-to-rail output performance, and integrated VCC/2 biasing compatibility (though not present in this variant-MAX4275 includes it).
Technical Context
The MAX4274AKEUA+T implements a laser-trimmed feedback network (RF/RG) directly on-die to fix noninverting gain at +5V/V with 0.1% tolerance. Its op-amp core is decompensated specifically for this gain setting, achieving 330kHz −3dB bandwidth and 23MHz gain-bandwidth product.
Input stage includes 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 internally to RG, limiting its common-mode range to within supply rails, while the noninverting input accepts VCC/2 bias only in MAX4275 variants-not applicable here.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | +5V/V noninverting; enables precise signal amplification without external resistor network layout or trimming. |
| Gain Accuracy | ±0.1% over temperature; ensures consistent scaling in measurement chains without calibration per unit. |
| Supply Voltage | +2.5V to +5.5V single supply; supports battery-powered and low-voltage industrial systems. |
| −3dB Bandwidth | 330kHz at AV = +5V/V; sufficient for DC-coupled sensor signals and medium-speed analog front-ends. |
| Input Fault Protection | ±17V on either input; prevents latch-up or damage during transient overvoltage events in harsh environments. |
| Capacitive Load Stability | Stable up to 470pF; eliminates need for isolation resistors in most PCB trace and filter capacitor scenarios. |
| Supply Current | 355µA typical; enables always-on sensing in power-constrained portable instruments. |
Pinout & Package
SOT23-5 package: compact 5-pin surface-mount outline with exposed pad (UAA/UAK suffix), footprint compatible with standard SOT23 land patterns and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting input terminal | Internally connected to RG; must remain within supply rails to avoid distortion; no external connection required for noninverting use. |
| 2 - OUT | Amplifier output | Rail-to-rail capable; drives 1kΩ load to within 150mV of rails at VCC = 5V; stable with ≤470pF capacitive load. |
| 3 - VCC | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor to ground near pin for noise suppression. |
| 4 - VEE | Negative supply / ground | Connected to system ground in single-supply operation; defines lower rail for input/output voltage ranges. |
| 5 - IN+ | Noninverting input terminal | DC-coupled input node; for MAX4274 variants, no internal VCC/2 bias-external reference required for single-supply mid-rail operation. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed internal resistors | Enables 0.1% gain accuracy without external components, reducing BOM count and PCB area by eliminating discrete RF/RG. |
| ±17V input fault tolerance | Prevents damage or phase reversal during ESD or surge events-critical for industrial I/O and automotive sensor interfaces. |
| Rail-to-rail output stage | Delivers full dynamic range across supply rails into 1kΩ, maximizing ADC utilization in low-voltage data acquisition systems. |
| 470pF capacitive load stability | Supports direct connection to RC filters, long traces, or ADC input capacitance without added series resistance or compensation. |
| 355µA supply current | Enables continuous operation in battery-powered devices with multi-year runtime (e.g., smart meter auxiliary sensors). |
Applications
| Low-Side Current-Sense | Photodiode Preamp |
|---|---|
Use Scenario: Amplifying mV-level shunt voltage in motor control or power supply monitoring. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier converting shunt voltage to measurable level for ADC input. Use Value: 0.1% gain accuracy ensures consistent current resolution across units; ±17V fault protection guards against inductive kickback. |
Use Scenario: Converting weak photocurrent from PIN diodes in IR receivers or medical pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting amplifier with low input bias current (±0.05nA) and low noise density (90nV/√Hz). Use Value: Rail-to-rail output maximizes dynamic range for low-light signal capture; 330kHz bandwidth preserves pulse shape fidelity. |
| Portable Instrumentation | Smart-Card Readers |
Use Scenario: Signal conditioning in handheld multimeters or environmental sensors powered by coin cells. IC Role / Device Role / Timing Role: Low-power, precision gain block interfacing transducers to microcontroller ADCs. Use Value: 355µA quiescent current extends battery life; SOT23-5 footprint minimizes board space in compact enclosures. |
Use Scenario: Amplifying card interface signals (e.g., ISO 7816 analog levels) in secure access terminals. IC Role / Device Role / Timing Role: Fixed-gain buffer isolating contact interface from MCU analog inputs. Use Value: ±17V input protection withstands ESD events during card insertion; 0.1% gain ensures reliable voltage threshold detection. |
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 | Same +5V/V gain, SOT23-5, but rated for −40°C to +85°C industrial temp range (identical); differs only in top mark and tape/reel packaging. | No functional difference; identical electrical specs and pinout; suitable for same designs requiring industrial temperature grade. | Select MAX4174EUK+T when sourcing from standard distribution channels with preference for Maxim's standard industrial-grade marking. |
| AD8236ARMZ | Instrumentation amplifier with adjustable gain (via external RG), 175µA supply current, 150kHz bandwidth, and built-in high-pass filter. | Requires external resistor for gain setting; lacks ±17V fault protection; better suited for AC-coupled biopotential sensing than DC current sense. | Choose AD8236ARMZ only when programmable gain and integrated AC coupling are required-otherwise MAX4274AKEUA+T offers superior DC accuracy and ruggedness. |
Compared with MAX4174EUK+T, the MAX4274AKEUA+T shares identical gain, accuracy, and package but may differ in traceability and reel orientation; versus AD8236ARMZ, it trades programmability for guaranteed 0.1% gain, higher bandwidth, and robust fault protection-making it preferable for production-critical DC measurement paths.
Availability
MAX4274AKEUA+T is available at Aetrix Electronics and suitable for low-side current-sense, photodiode preamplification, and portable instrumentation requiring stable component supply, guaranteed gain accuracy, and industrial temperature operation.
Supply support for MAX4274AKEUA+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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX4274AKEUA+T belongs to the GainAmp™ family-engineered to replace op-amp-plus-resistor configurations with monolithic, factory-trimmed fixed-gain amplifiers for reduced size, cost, and design risk in sensor signal chains.
FAQ
What is the exact gain configuration of the MAX4274AKEUA+T?
The MAX4274AKEUA+T is a noninverting fixed-gain amplifier with precisely trimmed +5V/V gain. This value is laser-set on-die using internal RF/RG resistors and guaranteed to ±0.1% across −40°C to +85°C. It does not support inverting or adjustable gain modes-only the specified +5V/V noninverting transfer function.
Does the MAX4274AKEUA+T include internal VCC/2 biasing at the IN+ pin?
No, the MAX4274AKEUA+T does not include internal VCC/2 biasing. That feature is exclusive to the MAX4275 series (e.g., MAX4275AKEUA+T). For single-supply operation with the MAX4274AKEUA+T, an external mid-rail reference must be applied to the IN+ pin to establish proper DC operating point.
What is the maximum capacitive load the MAX4274AKEUA+T can drive without oscillation?
The MAX4274AKEUA+T is stable with capacitive loads up to 470pF when driving a 100kΩ load, as verified in the datasheet's Typical Operating Characteristics. No isolation resistor is required within this limit-enabling direct connection to ADC input capacitors or RC anti-aliasing filters.
How does the ±17V input fault protection work on the MAX4274AKEUA+T?
The MAX4274AKEUA+T uses back-to-back SCR structures plus diode clamps at both IN+ and IN− pins. During overvoltage, current is limited to <3.5mA by internal 5kΩ (IN+) and RG (IN−) resistors, preventing latch-up or damage while maintaining output phase integrity-verified under sustained ±17V fault conditions.
Is the MAX4274AKEUA+T pin-compatible with other GainAmp devices like MAX4174 or MAX4275?
Yes-the MAX4274AKEUA+T uses the standard SOT23-5 pinout shared across MAX4174/MAX4175/MAX4274/MAX4275 variants: Pin 1=IN−, Pin 2=OUT, Pin 3=VCC, Pin 4=VEE, Pin 5=IN+. This allows drop-in replacement where gain and bias requirements align, though functional differences (e.g., VCC/2 bias) must be verified per application.
MAX4274AKEUA+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:
- 970 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
MAX4274AKEUA+T FAQ
1.How can I place an order for MAX4274AKEUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274AKEUA+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 MAX4274AKEUA+T reliable?
The price and inventory of MAX4274AKEUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274AKEUA+T is usually 5 days.
3.What payment methods are accepted for MAX4274AKEUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274AKEUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274AKEUA+T?
MAX4274AKEUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274AKEUA+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 MAX4274AKEUA+T?
For technical support, including MAX4274AKEUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274AKEUA+T requirements.
6.How does Aetrix verify that MAX4274AKEUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4274AKEUA+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 MAX4274AKEUA+T meets industry standards.
7.What is the process for return or replacement of MAX4274AKEUA+T?
All MAX4274AKEUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274AKEUA+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 MAX4274AKEUA+T part is unused and in its original packaging.
Return procedure for MAX4274AKEUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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