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Analog Devices Inc./Maxim Integrated MAX4274BKEUA+T
- Part No.:
- MAX4274BKEUA+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:
-
MAX4274BKEUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,873
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Product details
Overview
MAX4274BKEUA+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 noninverting gain of +5V/V, operates from +2.5V to +5.5V single supply, consumes 300µA, and achieves 23MHz gain-bandwidth product. It is used in low-side current-sense amplification and photodiode preamplification where high DC accuracy and compact size are critical.
For engineers reviewing the MAX4274BKEUA+T datasheet, MAX4274BKEUA+T pinout, MAX4274BKEUA+T application, or MAX4274BKEUA+T equivalent, key selection considerations include its factory-trimmed 0.1% gain accuracy, SOT23-5 package compatibility, rail-to-rail output swing into 1kΩ, stability with up to 470pF capacitive load, and VCC/2 biasing absence (requires external bias for AC-coupled single-supply use).
Technical Context
The MAX4274BKEUA+T integrates a decompensated rail-to-rail op amp core with laser-trimmed on-chip feedback resistors (RF/RG) to deliver fixed noninverting gain of +5V/V. Its compensation is optimized specifically for this gain setting, enabling a 23MHz GBW product and 330kHz –3dB bandwidth.
Input stage features back-to-back SCR structures and diode clamps at both inputs, allowing ±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 standard op-amp voltage ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +5V/V noninverting, factory-trimmed RF/RG ratio ensures 0.1% DC accuracy |
| Supply Voltage | +2.5V to +5.5V single supply - supports battery-powered portable instruments and smart-card readers |
| Supply Current | 300µA typical - enables ultra-low-power operation in always-on sensing nodes |
| GBW Product | 23MHz - provides usable bandwidth for signal conditioning up to ~330kHz at AV = +5V/V |
| Input Fault Protection | ±17V at either input - eliminates need for external clamping in noisy industrial or automotive sensor interfaces |
| Capacitive Load Stability | Stable up to 470pF - drives ADC input filters or long traces without isolation resistor |
| Output Swing | Rail-to-rail into 1kΩ - delivers full dynamic range across supply, e.g., 0.025V to 5.475V at VCC = 5.5V |
Pinout & Package
SOT23-5 surface-mount package (2.9mm × 1.6mm × 1.1mm), thermally enhanced, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | Connects internally to RG; must remain within supply rails to avoid distortion; no internal VCC/2 bias |
| 2 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ load with <250mV headroom at each rail |
| 3 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor to ground |
| 4 (VEE) | Negative supply / ground | Connected to system ground in single-supply operation; defines lower rail reference |
| 5 (IN+) | Noninverting input | Standard op-amp input node; no internal VCC/2 bias - external bias required for AC-coupled single-supply use |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed gain resistors | 0.1% gain accuracy eliminates manual resistor selection and layout uncertainty |
| Rail-to-rail output stage | Delivers >99% of supply rail-to-rail swing into 1kΩ, maximizing ADC utilization in low-voltage systems |
| ±17V input fault tolerance | Protects against ESD and transient overvoltage without external components in harsh environments |
| 470pF capacitive load stability | Drives anti-aliasing filters or PCB traces directly-no series isolation resistor needed |
| 23MHz gain-bandwidth product | Enables high-fidelity amplification of signals up to 330kHz at +5V/V gain without bandwidth compromise |
Applications
| Portable Instrument Signal Conditioning | Smart-Card Reader Analog Front-End |
|---|---|
Use Scenario: Amplifying low-level sensor outputs (e.g., thermistor, strain gauge) in handheld multimeters or data loggers powered by coin-cell batteries. IC Role / Device Role / Timing Role: Fixed-gain noninverting amplifier providing precise +5V/V scaling before 12-bit SAR ADC sampling. Use Value: Eliminates discrete resistor network, reduces board area by >40%, and guarantees 0.1% gain error across temperature. | Use Scenario: Conditioning analog signals from contactless card readers (e.g., ISO 14443 A/B) before digital demodulation. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail preamplifier boosting weak RF envelope signals with minimal added distortion. Use Value: 90nV/√Hz input noise and 330kHz bandwidth preserve signal integrity for accurate amplitude detection. |
| Low-Side Current-Sense Amplification | Photodiode Preamp in IR Receivers |
Use Scenario: Measuring motor or LED load current via shunt resistor in 3.3V embedded control systems. IC Role / Device Role / Timing Role: Noninverting amplifier with +5V/V gain converting mV-level shunt voltage to 0–1.65V range for MCU ADC. Use Value: ±17V input fault rating withstands inductive kickback; rail-to-rail output ensures full ADC code utilization. | Use Scenario: Amplifying weak photocurrent from PIN photodiodes in remote-control IR receivers operating from 3V coin cells. IC Role / Device Role / Timing Role: Transimpedance-capable fixed-gain stage converting photodiode current to voltage with stable 330kHz response. Use Value: 300µA quiescent current extends battery life; 470pF load stability accommodates photodiode junction 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 | +5V/V noninverting gain, identical SOT23-5 pinout and electrical specs; same 0.1% gain accuracy and ±17V fault protection | Same functional role; differs only in temperature grade (–40°C to +85°C vs. MAX4274BKEUA+T's –40°C to +125°C extended range) | Select MAX4174EUK+T for commercial-temperature applications where extended thermal margin is unnecessary |
| AD8236ARMZ-R7 | Instrumentation amplifier with adjustable gain (via external resistor), 1.5V/V to 1000V/V; higher input offset (±150µV), higher supply current (370µA), no ±17V fault protection | Requires external gain-setting resistor and dual supplies for best CMRR; suited for high-precision differential sensing, not single-ended fixed-gain use | Choose AD8236ARMZ-R7 only when differential input architecture and programmable gain outweigh cost, size, and fault-protection trade-offs |
Compared with MAX4174EUK+T, MAX4274BKEUA+T offers extended temperature operation up to +125°C, making it suitable for under-hood automotive or industrial edge nodes; versus AD8236ARMZ-R7, it delivers lower power, smaller footprint, guaranteed 0.1% gain, and robust fault tolerance-but lacks differential input capability.
Availability
MAX4274BKEUA+T is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, low-side current-sense circuits, and photodiode preamplifiers requiring stable component supply across extended temperature ranges.
Supply support for MAX4274BKEUA+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 industrial, medical, communications, and consumer applications.
The MAX4274 belongs to Maxim's GainAmp™ fixed-gain amplifier family, engineered to replace op-amp-plus-resistor configurations with monolithic, laser-trimmed solutions for space-constrained, high-accuracy signal conditioning.
FAQ
What is the exact gain configuration of the MAX4274BKEUA+T?
The MAX4274BKEUA+T is configured for noninverting gain of +5V/V. This is achieved via internal laser-trimmed feedback resistors (RF/RG) delivering 0.1% DC gain accuracy across –40°C to +125°C. Unlike the MAX4275 variant, it does not include internal VCC/2 biasing at the IN+ pin, requiring external bias for AC-coupled single-supply operation.
Does the MAX4274BKEUA+T support rail-to-rail input operation?
No, the MAX4274BKEUA+T does not support rail-to-rail input common-mode range. Its IN– pin connects directly to the internal RG resistor and must remain within the supply rails (VEE to VCC) to avoid distortion. The IN+ pin supports a common-mode range from VEE to VCC – 1.2V. Full rail-to-rail input capability is found only in the open-loop MAX428x series, not in the fixed-gain MAX4274BKEUA+T.
Can the MAX4274BKEUA+T drive a 1000pF capacitive load?
The MAX4274BKEUA+T is specified stable up to 470pF without external compensation. Driving 1000pF directly may cause peaking or oscillation. For loads exceeding 470pF, add a 100Ω isolation resistor in series with the output - validated in Maxim's Figure 10 - to restore phase margin while maintaining signal fidelity.
What is the maximum operating temperature for the MAX4274BKEUA+T?
The MAX4274BKEUA+T is rated for operation from –40°C to +125°C. This extended temperature range distinguishes it from the commercial-grade MAX4174 (–40°C to +85°C) and makes it suitable for under-hood automotive modules, industrial motor controllers, and outdoor IoT sensor nodes where ambient temperatures exceed 85°C.
Is the MAX4274BKEUA+T pin-compatible with other GainAmp devices in SOT23-5?
Yes, the MAX4274BKEUA+T shares the identical SOT23-5 pinout (IN–, OUT, VCC, VEE, IN+) with all MAX4174/MAX4175/MAX4274/MAX4275 variants. This allows direct substitution within the same footprint, provided the gain configuration (+5V/V), biasing requirement (no internal VCC/2), and temperature grade align with system needs.
MAX4274BKEUA+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:
- 330 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
MAX4274BKEUA+T FAQ
1.How can I place an order for MAX4274BKEUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274BKEUA+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 MAX4274BKEUA+T reliable?
The price and inventory of MAX4274BKEUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274BKEUA+T is usually 5 days.
3.What payment methods are accepted for MAX4274BKEUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274BKEUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274BKEUA+T?
MAX4274BKEUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274BKEUA+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 MAX4274BKEUA+T?
For technical support, including MAX4274BKEUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274BKEUA+T requirements.
6.How does Aetrix verify that MAX4274BKEUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4274BKEUA+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 MAX4274BKEUA+T meets industry standards.
7.What is the process for return or replacement of MAX4274BKEUA+T?
All MAX4274BKEUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274BKEUA+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 MAX4274BKEUA+T part is unused and in its original packaging.
Return procedure for MAX4274BKEUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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