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Analog Devices Inc./Maxim Integrated MAX4275AOESA
- Part No.:
- MAX4275AOESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4275AOESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,083
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Product details
Overview
MAX4275AOESA from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal VCC/2 biasing, housed in a 5-pin SOT23 package. It delivers +5V/V gain with 0.1% accuracy, operates from +2.5V to +5.5V single supply, consumes only 355µA (typ), and features rail-to-rail output swing driving 1kΩ while maintaining ±2.5mV input offset voltage and ±17V fault-protected inputs - ideal for low-side current-sense and portable instrument signal conditioning.
For engineers reviewing the MAX4275AOESA datasheet, MAX4275AOESA pinout, MAX4275AOESA application, or MAX4275AOESA equivalent, this page provides verified circuit role, exact gain configuration (+5V/V), internal bias architecture, fault protection limits, and real-world capacitive-load stability data up to 470pF - all critical for single-supply sensor interface design validation.
Technical Context
The MAX4275AOESA integrates a rail-to-rail output op-amp core with laser-trimmed on-chip feedback resistors (RF/RG) to deliver factory-set +5V/V noninverting gain. Its internal 150kΩ/150kΩ resistor divider establishes VCC/2 bias at IN+, eliminating external bias components for AC-coupled single-supply operation.
This variant belongs to the GainAmp™ family optimized for bandwidth-efficiency: at +5V/V, it achieves 330kHz –3dB bandwidth and 23MHz GBW product, with decompensation tailored specifically for mid-range gains. Input fault protection uses back-to-back SCR structures enabling ±17V tolerance without phase reversal or excessive current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | +5V/V noninverting, fixed by internal RF/RG; eliminates external resistor network and layout sensitivity |
| Supply Voltage Range | +2.5V to +5.5V single supply; supports battery-powered systems down to two alkaline cells |
| Supply Current | 355µA typical at VCC = +3V; enables ultra-low-power portable instrumentation |
| Input Offset Voltage | ±2.5mV max over temperature; ensures DC accuracy in precision current sensing |
| Output Voltage Swing | Rail-to-rail into 1kΩ load (VEE + 0.25V to VCC – 0.3V); maximizes dynamic range in 3.3V or 5V systems |
| Fault Protection | ±17V input tolerance at IN+ and IN–; prevents latch-up or damage during transient overvoltage events |
| Capacitive Load Stability | Stable up to 470pF without isolation resistor; simplifies driving ADC input filters or long traces |
Pinout & Package
MAX4275AOESA is packaged in a 5-pin SOT23 surface-mount package with standard footprint and thermal characteristics suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input terminal | Connected internally to RG; accepts differential or inverting signal paths; limited to rail-to-rail common-mode range |
| 2 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ directly; stable with ≤470pF capacitive load |
| 3 (VCC) | Positive supply | +2.5V to +5.5V input; requires 0.1µF bypass capacitor to ground near pin |
| 4 (VEE) | Negative supply / ground reference | Typically connected to system ground in single-supply configurations |
| 5 (IN+) | Noninverting input with internal bias | Internally biased to VCC/2 via dual 150kΩ resistors; enables AC-coupled single-supply operation without external bias network |
Key Features
| Feature | Design Value |
|---|---|
| Internal VCC/2 bias network | Dual 150kΩ resistors eliminate external bias components, reducing BOM count and PCB area in portable designs |
| 0.1% gain accuracy | Laser-trimmed RF/RG ratio ensures precise +5V/V scaling without calibration, critical for current-shunt measurement |
| Rail-to-rail output stage | Delivers full-scale swing into 1kΩ load, preserving SNR in low-voltage 3.3V microcontroller interfaces |
| ±17V input fault tolerance | SCR-based protection prevents damage during hot-plug, ESD, or power-rail transients in industrial sensors |
| 470pF capacitive load stability | Enables direct connection to anti-aliasing filters or long PCB traces without series isolation resistor |
Applications
| Portable Instrument Signal Conditioning | Smart-Card Reader Analog Front-End |
|---|---|
|
Use Scenario: Amplifying low-level thermocouple or bridge sensor outputs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier with internal VCC/2 bias, providing DC-coupled gain and rail-to-rail output swing. Use Value: Eliminates external bias resistors and matching networks, reducing component count and layout sensitivity while maintaining 0.1% gain accuracy across temperature. |
Use Scenario: Conditioning analog signals from contactless smart-card RF front-ends before ADC sampling. IC Role / Device Role / Timing Role: AC-coupled noninverting amplifier with internal VCC/2 bias, enabling single-supply operation and wide dynamic range. Use Value: Delivers 330kHz bandwidth and low THD (<–80dB at 10kHz) for clean digitization of modulated carrier envelopes. |
| Low-Side Current-Sense Amplification | Infrared Receiver Signal Boost |
|
Use Scenario: Amplifying mV-level shunt voltage drops in battery management and motor control systems. IC Role / Device Role / Timing Role: Precision noninverting gain block with ±17V input fault protection and rail-to-rail output. Use Value: Withstands load dump or reverse-battery conditions without latch-up, ensuring system reliability in automotive-grade portable tools. |
Use Scenario: Boosting weak photodiode currents from IR remote receiver modules prior to comparator or ADC input. IC Role / Device Role / Timing Role: Low-noise, fixed-gain preamplifier with 90nV/√Hz input voltage noise density at 1kHz. Use Value: Provides sufficient gain (+5V/V) and bandwidth to preserve pulse fidelity of 38kHz carrier bursts without added phase distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4175AOESA | +3V/V noninverting gain; identical VCC/2 bias architecture and SOT23-5 package | Better suited for lower-gain signal chains requiring higher bandwidth (640kHz –3dB vs. 330kHz) | Select when gain flexibility within the same bias architecture is needed without changing layout |
| MAX4274AOESA | +5V/V inverting configuration; no internal VCC/2 bias; shares same supply, current, and fault specs | Requires external bias network for single-supply use; preferred for differential or inverted signal paths | Choose for inverting topologies where input common-mode constraints favor IN– referenced design |
Compared with MAX4175AOESA, the MAX4275AOESA offers higher gain at same bias convenience; compared with MAX4274AOESA, it removes external biasing complexity but fixes topology to noninverting - making it optimal for AC-coupled, single-supply sensor interfaces demanding +5V/V scaling.
Availability
MAX4275AOESA is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, and low-side current-sense applications requiring stable component supply, guaranteed 0.1% gain accuracy, and single-supply rail-to-rail performance.
Supply support for MAX4275AOESA 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 industrial, medical, and portable electronics, emphasizing integration, power efficiency, and ruggedness.
The MAX4275AOESA belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace discrete op-amp-plus-resistor circuits with factory-trimmed, fault-protected, space-saving solutions for single-supply sensor signal chains.
FAQ
What is the exact gain configuration and polarity of the MAX4275AOESA?
The MAX4275AOESA is configured for noninverting operation with a fixed +5V/V gain. This is achieved using internal laser-trimmed resistors (RF/RG) and confirmed in the Gain Selection Guide and Electrical Characteristics table. The device does not support inverting or adjustable gain modes - the +5V/V ratio is hard-coded and unchangeable in-circuit.
Does the MAX4275AOESA require external biasing components for single-supply operation?
No. The MAX4275AOESA includes internal 150kΩ/150kΩ resistors that bias the IN+ pin to VCC/2, eliminating the need for external resistors or capacitors in AC-coupled single-supply applications. A 0.1µF bypass capacitor on VCC is still required, but no additional bias network is necessary for basic operation.
What is the maximum capacitive load the MAX4275AOESA can drive without instability?
The MAX4275AOESA is specified stable with capacitive loads up to 470pF without any external isolation resistor. This is verified in the Electrical Characteristics table and Typical Operating Characteristics (TOC11–TOC12). Driving larger loads (e.g., >600pF) requires adding a series isolation resistor (typically 50–100Ω) between OUT and the load.
How does the ±17V input fault protection work on the MAX4275AOESA?
The MAX4275AOESA implements ±17V fault tolerance using back-to-back SCR structures at both IN+ and IN– pins, clamping overvoltage to safe levels without phase reversal. Current is limited to <3.5mA per pin via internal 5kΩ (IN+) and RG (IN–) resistors - protecting both the IC and upstream signal sources during transient events like ESD or load dump.
Is the MAX4275AOESA pin-compatible with other devices in the MAX427x family?
Yes - all MAX4274/MAX4275 variants share identical 5-pin SOT23-5 pinout and footprint. Pin 1 is IN–, Pin 2 is OUT, Pin 3 is VCC, Pin 4 is VEE, and Pin 5 is IN+. This allows drop-in replacement across gain options (e.g., MAX4274AOESA for inverting +5V/V, MAX4275AOESA for noninverting +5V/V) without PCB revision.
MAX4275AOESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 355µA (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-SOIC
MAX4275AOESA FAQ
1.How can I place an order for MAX4275AOESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275AOESA 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 MAX4275AOESA reliable?
The price and inventory of MAX4275AOESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275AOESA is usually 5 days.
3.What payment methods are accepted for MAX4275AOESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275AOESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275AOESA?
MAX4275AOESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275AOESA 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 MAX4275AOESA?
For technical support, including MAX4275AOESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275AOESA requirements.
6.How does Aetrix verify that MAX4275AOESA is sourced from the original manufacturer or authorized distributors?
All MAX4275AOESA 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 MAX4275AOESA meets industry standards.
7.What is the process for return or replacement of MAX4275AOESA?
All MAX4275AOESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275AOESA, 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 MAX4275AOESA part is unused and in its original packaging.
Return procedure for MAX4275AOESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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