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Analog Devices Inc./Maxim Integrated MAX4275ABEUA
- Part No.:
- MAX4275ABEUA
- 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:
-
MAX4275ABEUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,908
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Product details
Overview
MAX4275ABEUA from Maxim Integrated is a single-channel, rail-to-rail output, fixed-gain operational amplifier with internal VCC/2 biasing at the noninverting input, designed for precision signal conditioning in single-supply systems. It delivers +5V/V noninverting gain with 0.1% gain accuracy, operates from +2.5V to +5.5V, consumes only 300µA supply current, and features ±17V input fault protection - enabling robust low-side current-sense and photodiode preamplifier applications.
For engineers reviewing the MAX4275ABEUA datasheet, MAX4275ABEUA pinout, MAX4275ABEUA application, or MAX4275ABEUA equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts - all grounded in Maxim's official GainAmp family documentation and electrical characteristics tables.
Technical Context
The MAX4275ABEUA integrates a decompensated rail-to-rail op-amp core with laser-trimmed on-chip feedback resistors (RF/RG) to deliver factory-set +5V/V gain, optimized for 23MHz GBW product. Its internal 150kΩ/150kΩ resistor divider establishes VCC/2 bias at IN+, eliminating external bias components for AC-coupled single-supply designs.
Input protection includes back-to-back SCR structures and diode clamps limiting fault current to <3.5mA at ±17V overvoltage, while output stability is guaranteed up to 470pF capacitive load without isolation resistor - critical for driving ADC input filters or long PCB traces in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | +5V/V noninverting, fixed via internal RF/RG ratio - eliminates external resistor layout, reduces BOM count, and ensures 0.1% gain accuracy across temperature. |
| Supply Voltage Range | +2.5V to +5.5V single supply - supports Li-ion battery-powered systems and 3.3V/5V logic interfaces without level-shifting. |
| Supply Current | 300µA typical - enables always-on sensing in energy-constrained portable instruments and smart-card readers. |
| Input Fault Protection | ±17V at IN+ or IN− - prevents latch-up or damage during hot-plug events or ESD transients in keyless entry and infrared receiver circuits. |
| Capacitive Load Stability | Stable up to 470pF - allows direct connection to anti-aliasing filters or long traces without series isolation resistor, simplifying layout. |
| Output Voltage Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range at output, maximizing SNR when driving SAR ADCs or comparators. |
| GBW Product | 23MHz at AV = +5V/V - provides >4MHz –3dB bandwidth, sufficient for 10-bit ADC sampling at 1MSPS with <0.1% settling error. |
Pinout & Package
SOT23-5 package (5-pin, 2.9mm × 1.6mm × 1.1mm), surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input terminal | Connected internally to RG resistor; voltage must remain within VEE to VCC to avoid distortion; accepts DC- or AC-coupled signals in inverting configurations. |
| 2 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ load with <250mV headroom; stable with ≤470pF capacitive load - suitable for direct ADC interface or buffer stage. |
| 3 (VEE) | Negative supply / ground reference | Typically connected to GND in single-supply operation; defines lower rail for common-mode input range and output swing. |
| 4 (VCC) | Positive supply | Accepts +2.5V to +5.5V; powers internal op-amp, bias resistors, and protection circuitry; requires 0.1µF local bypass to GND. |
| 5 (IN+) | Noninverting input with internal VCC/2 bias | Internally biased to VCC/2 via dual 150kΩ resistors - eliminates external bias network for AC-coupled sensors; adds 1µF capacitor recommended to suppress PSRR degradation above 10kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Internal VCC/2 bias network | Two matched 150kΩ resistors enable self-biasing of IN+ - removes need for external resistive divider, saving board space and component cost in single-supply photodiode preamps. |
| Laser-trimmed gain resistors | RF/RG ratio trimmed to 0.1% accuracy - guarantees gain tolerance without calibration, critical for factory-programmed sensor signal chains in bar-code readers. |
| Rail-to-rail output stage | Swings within 25mV of rails into 100kΩ - preserves full-scale resolution when interfacing with 12-bit ADCs operating at 3.3V reference. |
| ±17V input fault tolerance | SCR-based protection limits input current to <3.5mA - protects against transient overvoltage in automotive keyless entry receivers exposed to ISO 7637-2 pulses. |
| 470pF capacitive load stability | No isolation resistor required - simplifies filter design for low-pass anti-aliasing networks feeding precision SAR ADCs in portable test equipment. |
Applications
| Photodiode Preamp | Low-Side Current-Sense |
|---|---|
|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in IR remote control receivers or optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with fixed +5V/V gain and internal VCC/2 bias enabling AC-coupled operation from single 3.3V supply. Use Value: Eliminates external bias resistors and matching components, reducing noise sources and layout sensitivity while maintaining 0.1% gain accuracy over temperature. |
Use Scenario: Measuring load current by amplifying voltage across shunt resistor in battery-powered smart-card readers. IC Role / Device Role / Timing Role: Noninverting amplifier with rail-to-rail output driving ADC input; ±17V fault protection guards against accidental probe shorts. Use Value: Delivers full 0–3.3V output swing into 1kΩ, maximizing ADC utilization; 300µA quiescent current extends battery life in handheld terminals. |
| Portable Instrumentation | Smart-Card Reader Signal Chain |
|
Use Scenario: Conditioning analog sensor outputs (e.g., thermistor, pressure bridge) in handheld multimeters or environmental monitors. IC Role / Device Role / Timing Role: Precision gain block with 23MHz GBW supporting fast step response (<7µs to 0.01%) for digitized waveform capture. Use Value: Factory-trimmed resistors remove gain calibration step; SOT23-5 footprint minimizes PCB area in space-constrained enclosures. |
Use Scenario: Amplifying card interface signals (e.g., CLK, I/O) in EMV-compliant contactless smart-card readers. IC Role / Device Role / Timing Role: Fixed-gain buffer isolating microcontroller GPIO from noisy card contacts; VCC/2 bias enables rail-centered signal swing. Use Value: Internal bias and rail-to-rail output ensure clean digital logic levels despite supply droop; ±17V tolerance withstands ESD events per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4175ABEUA | Same SOT23-5 package, identical +5V/V gain, same VCC/2 bias architecture, but rated for -40°C to +85°C industrial temp range (MAX4275ABEUA is -40°C to +125°C). | Not qualified for extended-temperature automotive or industrial control environments requiring >85°C operation. | Select MAX4275ABEUA where operation beyond +85°C is required; MAX4175ABEUA suffices for commercial portable devices. |
| AD8275ARMZ | Fixed +0.2V/V gain (not +5V/V); differential input architecture; 5V supply only; no internal VCC/2 bias; requires external reference for single-supply use. | Designed for high-voltage differential sensing (e.g., motor phase currents), not single-ended photodiode or low-side shunt amplification. | Choose AD8275ARMZ only for attenuating high-common-mode signals; MAX4275ABEUA is superior for unity-gain-referenced, single-ended amplification with bias convenience. |
Compared with MAX4175ABEUA, the MAX4275ABEUA offers extended temperature range qualification (+125°C max), making it suitable for under-hood automotive modules or industrial PLC analog inputs; versus AD8275ARMZ, it provides true noninverting +5V/V gain with integrated bias - eliminating external references and simplifying single-supply sensor front-ends.
Availability
MAX4275ABEUA is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, low-side current-sense circuits, and photodiode preamplifiers requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MAX4275ABEUA 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4275ABEUA belongs to the GainAmp™ fixed-gain amplifier product line, engineered to replace discrete op-amp-plus-resistor configurations with monolithic, laser-trimmed solutions that reduce size, cost, and design risk in precision signal conditioning.
FAQ
What is the exact gain configuration and accuracy of the MAX4275ABEUA?
The MAX4275ABEUA is configured for noninverting +5V/V fixed gain using laser-trimmed internal RF/RG resistors. Its gain accuracy is guaranteed at ±0.1% over temperature and supply voltage, as specified in Maxim's official electrical characteristics table for the MAX4274/MAX4275 family. This precision eliminates post-layout calibration in production test flows for MAX4275ABEUA-based designs.
Does the MAX4275ABEUA require external biasing components for single-supply operation?
No - the MAX4275ABEUA integrates dual 150kΩ resistors to provide internal VCC/2 bias at the IN+ pin, removing the need for external resistive dividers in AC-coupled applications. A 0.1µF to 1µF bypass capacitor from IN+ to GND is recommended to suppress high-frequency power-supply noise coupling, as documented in the MAX4275ABEUA Typical Operating Circuit and Applications Information section.
What is the maximum capacitive load the MAX4275ABEUA can drive without oscillation?
The MAX4275ABEUA is stable with capacitive loads up to 470pF without requiring an isolation resistor, as confirmed in the "Capacitive Load Stability" row of its Electrical Characteristics table (CLOAD = 470pF, MIN/MAX conditions). This specification applies directly to the MAX4275ABEUA and enables direct connection to ADC input filters or long PCB traces in portable instrumentation designs.
How does the ±17V input fault protection work in the MAX4275ABEUA?
The MAX4275ABEUA implements ±17V input fault protection using back-to-back SCR structures at both IN+ and IN− pins, combined with diode clamps to VCC and VEE. Under overvoltage, current is limited to <3.5mA by internal 5kΩ (IN+) and RG (IN−) resistors - preventing latch-up and protecting both the MAX4275ABEUA and upstream signal sources, as detailed in Figure 3 and Applications Information of the datasheet.
Is the MAX4275ABEUA pin-compatible with other GainAmp devices like the MAX4175ABEUA?
Yes - the MAX4275ABEUA uses the identical SOT23-5 pinout as MAX4175ABEUA and MAX4274ABEUA, with pin 1 = IN−, pin 2 = OUT, pin 3 = VEE, pin 4 = VCC, pin 5 = IN+. This allows drop-in replacement in existing layouts; however, MAX4275ABEUA is rated for -40°C to +125°C operation, whereas MAX4175ABEUA is limited to -40°C to +85°C, per Maxim's Ordering Information table.
MAX4275ABEUA 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:
- 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:
- 1.7 MHz
- 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-uMAX-EP|8-uSOP-EP
MAX4275ABEUA FAQ
1.How can I place an order for MAX4275ABEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275ABEUA 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 MAX4275ABEUA reliable?
The price and inventory of MAX4275ABEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275ABEUA is usually 5 days.
3.What payment methods are accepted for MAX4275ABEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275ABEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275ABEUA?
MAX4275ABEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275ABEUA 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 MAX4275ABEUA?
For technical support, including MAX4275ABEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275ABEUA requirements.
6.How does Aetrix verify that MAX4275ABEUA is sourced from the original manufacturer or authorized distributors?
All MAX4275ABEUA 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 MAX4275ABEUA meets industry standards.
7.What is the process for return or replacement of MAX4275ABEUA?
All MAX4275ABEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275ABEUA, 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 MAX4275ABEUA part is unused and in its original packaging.
Return procedure for MAX4275ABEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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