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Analog Devices Inc./Maxim Integrated MAX4275AGEUA+T
- Part No.:
- MAX4275AGEUA+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:
-
MAX4275AGEUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
MAX4275AGEUA+T from Maxim Integrated is a single-channel, rail-to-rail output, fixed-gain 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, and features ±17V input fault protection - enabling robust low-side current-sense and photodiode preamp applications.
For engineers reviewing the MAX4275AGEUA+T datasheet, MAX4275AGEUA+T pinout, MAX4275AGEUA+T application, or MAX4275AGEUA+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SOT23-5 pinout, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The MAX4275AGEUA+T 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 and 23MHz GBW product. Its internal 150kΩ/150kΩ resistor divider establishes a precise VCC/2 bias at IN+, eliminating external bias components for AC-coupled inputs.
Input fault protection uses back-to-back SCR structures and diode clamps with series limiting resistors (5kΩ at IN+, RG at IN−), enabling ±17V input overvoltage tolerance without phase reversal or excessive current draw (<3.5mA). The device remains stable driving capacitive loads up to 470pF without isolation resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +5V/V noninverting, factory-trimmed RF/RG ratio ensures 0.1% accuracy - eliminates manual resistor selection and layout sensitivity. |
| Supply Voltage | +2.5V to +5.5V single supply - supports Li-ion, USB, and 3.3V/5V embedded rails without level-shifting. |
| Supply Current | 300µA typical - enables battery-powered portable instruments with multi-year operation. |
| GBW Product | 23MHz at AV = +5V/V - delivers usable bandwidth for 100kHz sensor signals with <0.1% gain error. |
| Input Fault Protection | ±17V at IN+/IN− - withstands ESD and transient overvoltage in automotive body electronics and industrial I/O without external TVS. |
| Capacitive Load Stability | Stable up to 470pF - drives ADC input filters or long PCB traces directly, avoiding isolation resistors and associated signal loss. |
| Output Swing | Rail-to-rail into 1kΩ load - preserves full dynamic range across supply range, critical for low-voltage photodiode preamps. |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm footprint with exposed pad for thermal performance; compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Connected internally to RG; voltage must remain within supply rails to avoid distortion - used for feedback in inverting configurations or signal input in noninverting mode. |
| 2 (IN+) | Noninverting input | Biased internally to VCC/2 via dual 150kΩ resistors - enables AC-coupled single-supply operation without external bias network. |
| 3 (VEE) | Negative supply / ground | Reference node for single-supply operation; ties to system ground - defines lower rail for rail-to-rail output swing. |
| 4 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor near pin to suppress supply noise coupling into IN+ bias node. |
| 5 (OUT) | Amplifier output | Rail-to-rail capable into 1kΩ; drives ADC inputs, analog switches, or downstream buffers directly - no level-shifting needed. |
Key Features
| Feature | Design Value |
|---|---|
| VCC/2 internal bias | Eliminates two external resistors and one bypass capacitor in single-supply AC-coupled designs - reduces BOM count and board area by ≥3 components. |
| 0.1% gain accuracy | Laser-trimmed RF/RG resistors ensure consistent gain across temperature and unit-to-unit - removes need for post-production calibration in medical sensors. |
| ±17V input fault tolerance | SCR-based protection prevents latch-up and phase reversal during ±15V transients - meets IEC 61000-4-4 Level 3 surge immunity without external protection. |
| 470pF capacitive load stability | Drives anti-aliasing filters or long traces directly - avoids 10–50Ω isolation resistors that degrade SNR and increase THD in audio front-ends. |
| 23MHz GBW at +5V/V | Enables 10-bit ADC sampling at 100kSPS with <0.5 LSB gain error - supports high-resolution data acquisition in handheld test equipment. |
Applications
| Low-Side Current-Sense | Photodiode Preamp |
|---|---|
|
Use Scenario: Monitoring motor phase current in BLDC inverters using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Noninverting amplifier with +5V/V gain conditions shunt voltage for 12-bit ADC input. Use Value: Internal VCC/2 bias enables rail-to-rail output swing from 0V to VCC, maximizing ADC utilization without negative supply or level shifters. |
Use Scenario: Amplifying weak photocurrent from silicon PIN diodes in IR remote receivers and optical encoders. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting gain stage with low input bias current (±0.05nA) and 90nV/√Hz noise density. Use Value: 300µA quiescent current allows continuous operation in battery-powered remotes; ±17V input tolerance absorbs ESD from handling. |
| Smart-Card Readers | Portable Instrumentation |
|
Use Scenario: Signal conditioning of contactless RF field detection in ISO 14443-compliant smart-card readers. IC Role / Device Role / Timing Role: Fixed-gain amplifier boosting antenna coil voltage before envelope detection and digital demodulation. Use Value: 0.1% gain accuracy ensures consistent threshold detection across temperature; SOT23-5 footprint fits tight space constraints near NFC antenna. |
Use Scenario: Front-end amplification of thermocouple or strain gauge outputs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Precision gain block providing +5V/V amplification prior to sigma-delta ADC conversion. Use Value: Rail-to-rail output swing preserves full 3.3V ADC range; 23MHz GBW supports fast step response for auto-ranging functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4175EUK+T | SOT23-5, same +5V/V gain, identical VCC/2 bias, but rated for -40°C to +85°C (same as MAX4275AGEUA+T) and specified with tighter input offset drift (±5µV/°C vs. ±10µV/°C). | Preferred for high-precision temperature-stable instrumentation where offset drift dominates error budget. | Select MAX4175EUK+T when drift-critical DC accuracy is required; MAX4275AGEUA+T offers broader availability and same core functionality. |
| AD8220ARMZ | SOIC-8, instrumentation amplifier with adjustable gain (1–1000V/V), 1.5mV max VOS, 1.2nA IB, but higher 1.2mA ICC and no integrated VCC/2 bias. | Suitable for differential sensing with common-mode rejection >100dB; requires external bias network for single-supply use. | Choose AD8220ARMZ for differential input or programmable gain needs; MAX4275AGEUA+T is superior for cost-sensitive, space-constrained single-ended +5V/V applications. |
Compared with MAX4175EUK+T, MAX4275AGEUA+T trades minor offset drift tolerance for broader distribution channel support; versus AD8220ARMZ, it delivers 4× lower power, 50% smaller footprint, and integrated bias - at the cost of fixed gain and no differential input.
Availability
MAX4275AGEUA+T is available at Aetrix Electronics and suitable for low-power portable instruments, smart-card readers, and photodiode preamplifiers requiring stable component supply, long-lifecycle support, and guaranteed authentic sourcing.
Supply support for MAX4275AGEUA+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 industrial, medical, and communications applications, emphasizing integration, reliability, and low-power operation.
The MAX4275AGEUA+T belongs to the GainAmp™ family of fixed-gain amplifiers, engineered to replace discrete op-amp-plus-resistor circuits with factory-trimmed accuracy, reduced board space, and simplified single-supply biasing.
FAQ
What is the exact gain configuration of the MAX4275AGEUA+T?
The MAX4275AGEUA+T is configured for noninverting +5V/V gain using laser-trimmed internal RF/RG resistors. This fixed ratio is factory-set and unchangeable; the device does not support inverting or other gain options. The +5V/V value is confirmed in the Gain Selection Guide and Electrical Characteristics table under "DC Gain Accuracy" with 0.1% tolerance.
Does the MAX4275AGEUA+T require external biasing components for single-supply operation?
No - the MAX4275AGEUA+T includes internal 150kΩ/150kΩ resistors that generate a precise VCC/2 bias at the IN+ pin, eliminating external resistors and bypass capacitors required by standard op-amps. A 0.1µF supply bypass capacitor is still mandatory at VCC to prevent noise coupling into the bias node.
What is the maximum capacitive load the MAX4275AGEUA+T can drive without oscillation?
The MAX4275AGEUA+T is stable driving up to 470pF directly at its output, as verified in the Capacitive Load Stability specification (TYP 470pF, tested with no isolation resistor). Driving >470pF requires a series isolation resistor (e.g., 10–50Ω) between OUT and the load to maintain phase margin.
Can the MAX4275AGEUA+T be used in dual-supply applications?
Yes - the MAX4275AGEUA+T operates from ±1.25V to ±2.75V dual supplies. However, the internal VCC/2 bias becomes VEE + (VCC − VEE)/2, so IN+ is biased to midsupply. For ground-referenced dual-supply signals, use the MAX4174/MAX4274 variants without internal bias instead.
What is the input voltage range limitation for the IN− pin of the MAX4275AGEUA+T?
The IN− pin of the MAX4275AGEUA+T must remain within the supply rails (VEE to VCC) to avoid distortion or clipping, as it connects directly to the internal RG resistor and op-amp input stage. Exceeding this range may cause signal distortion due to input-stage diode conduction - unlike the open-loop MAX428x series, which extends beyond rails.
MAX4275AGEUA+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:
- 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
MAX4275AGEUA+T FAQ
1.How can I place an order for MAX4275AGEUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275AGEUA+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 MAX4275AGEUA+T reliable?
The price and inventory of MAX4275AGEUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275AGEUA+T is usually 5 days.
3.What payment methods are accepted for MAX4275AGEUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275AGEUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275AGEUA+T?
MAX4275AGEUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275AGEUA+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 MAX4275AGEUA+T?
For technical support, including MAX4275AGEUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275AGEUA+T requirements.
6.How does Aetrix verify that MAX4275AGEUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4275AGEUA+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 MAX4275AGEUA+T meets industry standards.
7.What is the process for return or replacement of MAX4275AGEUA+T?
All MAX4275AGEUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275AGEUA+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 MAX4275AGEUA+T part is unused and in its original packaging.
Return procedure for MAX4275AGEUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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