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Analog Devices Inc./Maxim Integrated MAX4274BJEUA
- Part No.:
- MAX4274BJEUA
- 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:
-
MAX4274BJEUA.pdf
- Description:
- IC OPAMP GAIN 49 R-TO-R 8-UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:940
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Product details
Overview
MAX4274BJEUA from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal precision resistors, rail-to-rail output, ±17V input fault protection, and 0.1% gain accuracy. It operates from +2.5V to +5.5V, draws only 300µA, and delivers up to 23MHz GBW at AV = +101V/V. It is used in low-side current-sense amplification and photodiode preamplification where stable, factory-trimmed gain and single-supply operation are critical.
For engineers reviewing the MAX4274BJEUA datasheet, MAX4274BJEUA pinout, MAX4274BJEUA application, or MAX4274BJEUA equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The MAX4274BJEUA integrates a rail-to-rail op-amp core with laser-trimmed on-chip feedback resistors (RF/RG), enabling precise noninverting gains from +1.25V/V to +101V/V without external components. Its decompensation is optimized per gain setting - e.g., AV = +25V/V to +101V/V achieves up to 23MHz GBW - while maintaining stability with capacitive loads ≤470pF.
It features internal VCC/2 biasing only on MAX4175/MAX4275 variants; the MAX4274BJEUA is a fixed-gain version *without* internal bias (confirmed by pin description and functional diagrams showing IN+ unconnected to internal dividers). Input protection includes back-to-back SCRs and diode clamps, allowing ±17V fault tolerance relative to VEE without phase reversal or excessive current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - supports Li-ion, USB, and industrial 3.3V/5V rails without level-shifting. |
| Gain Accuracy | ±0.1% - eliminates need for external trimming or calibration in precision gain stages. |
| Supply Current | 300µA typical - enables battery-powered portable instruments with multi-year runtime. |
| GBW Product | Up to 23MHz at AV ≥ +25V/V - sustains usable bandwidth even at high closed-loop gains. |
| Input Fault Protection | ±17V at IN−/IN+ - protects against sensor overvoltage, ESD transients, and wiring faults. |
| Capacitive Load Stability | Stable up to 470pF - drives long traces, ADC input filters, or parasitic capacitance without isolation resistor. |
| Output Voltage Swing | Rail-to-rail into 1kΩ - maximizes dynamic range in single-supply systems with limited headroom. |
Pinout & Package
SOT23-5 package - compact 2.9mm × 1.6mm footprint ideal for space-constrained portable and embedded designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Connects directly to internal RG resistor; voltage must stay within supply rails to avoid distortion. |
| 2 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ load while maintaining DC accuracy and settling within 7µs to 0.01%. |
| 3 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor placed adjacent to pin. |
| 4 (VEE) | Negative supply / ground | Reference node for single-supply operation; tied to system GND in most applications. |
| 5 (IN+) | Noninverting input | DC-coupled input node; *no internal VCC/2 bias* - external bias required for AC-coupled single-supply use. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed RF/RG network | Enables drop-in replacement of op-amp + discrete resistor networks, reducing BOM count and layout area by >40%. |
| ±17V input fault tolerance | Eliminates need for external series resistors or TVS diodes in current-sense front-ends exposed to motor or relay switching noise. |
| 300µA quiescent current | Supports always-on sensing nodes in IoT edge devices with <1µA average system sleep current. |
| Stable with 470pF capacitive load | Permits direct connection to SAR ADC inputs or RC anti-aliasing filters without output isolation. |
| 0.1% gain accuracy over temperature | Maintains measurement linearity in smart-card readers and bar-code scanners across -40°C to +85°C. |
Applications
| Portable Instruments | Smart-Card Readers |
|---|---|
Use Scenario: Battery-powered handheld multimeters measuring µA–mA currents via shunt resistors. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier conditioning shunt voltage with minimal offset drift. Use Value: 0.1% gain accuracy and rail-to-rail output preserve full ADC resolution across 3.3V supply range. |
Use Scenario: Contactless EMV-compliant card readers detecting weak analog signals from NFC coils. IC Role / Device Role / Timing Role: Low-noise preamplifier boosting microvolt-level card response before envelope detection. Use Value: 90nV/√Hz input noise density and 23MHz GBW enable clean signal recovery at 13.56MHz carrier harmonics. |
| Infrared Receivers for Remote Controls | Low-Side Current-Sense Amplifiers |
Use Scenario: Consumer IR receivers demodulating 38kHz pulsed signals in ambient light conditions. IC Role / Device Role / Timing Role: Fixed-gain amplifier stage amplifying photodiode current with fast transient response. Use Value: 7µs settling time to 0.01% and ±17V fault protection prevent latch-up during ESD events near IR windows. |
Use Scenario: Real-time motor phase current monitoring in BLDC inverters using shunt resistors. IC Role / Device Role / Timing Role: High-accuracy, high-bandwidth gain block converting mV shunt drops to 0–3.3V ADC range. Use Value: 23MHz GBW supports accurate capture of PWM-edge transients; 300µA ICC minimizes self-heating error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4174BEUK-T | SOT23-5, same gain family but rated for -40°C to +85°C (vs. MAX4274BJEUA's -40°C to +125°C); 300µA ICC, 0.1% gain accuracy. | Not qualified for extended-temperature industrial or automotive under-hood use. | Select MAX4174BEUK-T only for cost-sensitive commercial-grade portable instruments operating ≤85°C. |
| AD8220BRMZ | Zero-drift instrumentation amp (not fixed-gain); 1.5mV VOS max, 120dB CMRR, SO-8 package; no internal gain resistors. | Requires external gain-setting resistors; higher precision but larger solution size and higher power (1.1mA). | Choose AD8220BRMZ when ultra-low offset drift (<0.1µV/°C) and high CMRR are mandatory - not for simple fixed-gain replacement. |
Compared with MAX4174BEUK-T, the MAX4274BJEUA offers extended temperature operation and identical gain accuracy; compared with AD8220BRMZ, it trades programmability and CMRR for smaller size, lower power, and guaranteed gain matching without external components.
Availability
MAX4274BJEUA is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, infrared receivers for remote controls, and low-side current-sense amplifiers requiring stable component supply, long-term lifecycle support, and guaranteed gain performance across industrial temperatures.
Supply support for MAX4274BJEUA 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, and communications applications.
The MAX4274BJEUA belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace op-amp-plus-resistor circuits with factory-trimmed, space-saving, high-accuracy gain blocks for sensor signal conditioning and portable electronics.
FAQ
What is the exact gain configuration of the MAX4274BJEUA?
The MAX4274BJEUA is a noninverting fixed-gain amplifier. Its specific gain is determined by the "B" suffix in the part number, which corresponds to +5V/V per Maxim's Gain Selection Guide. This is confirmed by electrical characteristics tables listing +5V/V performance data (e.g., BW-3dB = 640kHz, SR = 0.7V/µs) and functional diagrams showing the standard noninverting topology with internal RF/RG ratio set for AV = 1 + RF/RG = +5V/V.
Does the MAX4274BJEUA include internal VCC/2 biasing at the IN+ pin?
No, the MAX4274BJEUA does not include internal VCC/2 biasing. That feature is exclusive to the MAX4175/MAX4275 variants, which integrate dual 150kΩ resistors forming a voltage divider. The MAX4274BJEUA's IN+ pin is a bare op-amp input requiring external DC bias for AC-coupled single-supply operation - confirmed by pin descriptions, functional diagrams, and the "BJEUA" ordering code mapping to the non-biased MAX4274 series.
What is the maximum capacitive load the MAX4274BJEUA can drive without oscillation?
The MAX4274BJEUA is stable with capacitive loads up to 470pF without requiring an isolation resistor - verified in Electrical Characteristics (CLOAD = 470pF, "Capacitive Load Stability") and Typical Operating Characteristics (Figures 11–12 show clean pulse response at CL = 470pF). Driving >470pF requires adding a series isolation resistor (e.g., 100Ω) between OUT and the load to maintain phase margin.
Can the MAX4274BJEUA be used in dual-supply configurations?
Yes, the MAX4274BJEUA supports dual-supply operation from ±1.25V to ±2.75V (equivalent to VCC–VEE = 2.5V to 5.5V). Its input common-mode range extends to within 1.2V of the positive rail and 150mV below the negative rail, and its rail-to-rail output swings fully between supplies. Dual-supply use is explicitly supported in Applications Information and Typical Operating Circuits (e.g., Figure 5 and Figure 8).
What is the input offset voltage specification for the MAX4274BJEUA at +25°C?
The MAX4274BJEUA has a maximum input offset voltage (VOS) of ±2.5mV at TA = +25°C and VCC = +5V, as specified in the "ELECTRICAL CHARACTERISTICS-MAX4174/MAX4274/MAX4275 Fixed-Gain Amplifiers" table. This value is guaranteed across the full operating temperature range (-40°C to +125°C), with typical drift of ±5µV/°C - critical for maintaining accuracy in precision current-sense and sensor interfaces.
MAX4274BJEUA 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:
- Discontinued at Digi-Key
- 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:
- 310 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
MAX4274BJEUA FAQ
1.How can I place an order for MAX4274BJEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4274BJEUA 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 MAX4274BJEUA reliable?
The price and inventory of MAX4274BJEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4274BJEUA is usually 5 days.
3.What payment methods are accepted for MAX4274BJEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4274BJEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4274BJEUA?
MAX4274BJEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4274BJEUA 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 MAX4274BJEUA?
For technical support, including MAX4274BJEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4274BJEUA requirements.
6.How does Aetrix verify that MAX4274BJEUA is sourced from the original manufacturer or authorized distributors?
All MAX4274BJEUA 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 MAX4274BJEUA meets industry standards.
7.What is the process for return or replacement of MAX4274BJEUA?
All MAX4274BJEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4274BJEUA, 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 MAX4274BJEUA part is unused and in its original packaging.
Return procedure for MAX4274BJEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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