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Analog Devices Inc./Maxim Integrated MAX4275AGEUA
- Part No.:
- MAX4275AGEUA
- 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.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
MAX4275AGEUA 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 single-supply signal conditioning. 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 - ideal for low-side current-sense amplification in portable instrumentation.
For engineers reviewing the MAX4275AGEUA datasheet, MAX4275AGEUA pinout, MAX4275AGEUA application, or MAX4275AGEUA equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The MAX4275AGEUA integrates a precision rail-to-rail op-amp core with laser-trimmed on-chip feedback resistors (RF/RG) and dual 150kΩ internal bias resistors forming a VCC/2 divider at IN+. Its compensation is optimized for +5V/V gain, delivering 23MHz GBW and 330kHz –3dB bandwidth while maintaining stability with up to 470pF capacitive loads without isolation resistors.
This device targets AC-coupled, single-supply systems where mid-supply input bias eliminates external resistor networks. Its IN– input connects directly to RG, limiting common-mode range to rail-to-rail, while IN+ is internally biased to VCC/2 ±0.25V - enabling full output swing without DC offset errors in photodiode preamp or smart-card reader front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +5V/V noninverting, factory-trimmed for 0.1% accuracy - eliminates external gain-setting resistors and layout sensitivity. |
| Supply Voltage | +2.5V to +5.5V single supply - supports Li-ion battery-powered devices and 3.3V/5V logic interfaces. |
| Supply Current | 300µA per amplifier - enables always-on sensing in portable instruments with multi-year battery life. |
| Input Fault Protection | ±17V on IN+ or IN– relative to VEE - prevents latch-up or damage during hot-plug or ESD events in keyless entry systems. |
| Capacitive Load Stability | Stable with ≤470pF load - drives long PCB traces or ADC input capacitance without external isolation resistors. |
| Output Swing | Rail-to-rail into 1kΩ - delivers full dynamic range across 0V to VCC for 12-bit+ ADC interfacing. |
| GBW Product | 23MHz - enables high-fidelity amplification of signals up to ~300kHz at +5V/V gain without phase distortion. |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm footprint with gull-wing leads, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | Connects directly to internal RG; voltage must remain within VEE to VCC to avoid clipping or distortion. |
| 2 (IN+) | Noninverting input | Internally biased to VCC/2 via dual 150kΩ resistors - eliminates external bias network for AC-coupled sensors. |
| 3 (VEE) | Negative supply / ground | Reference node for single-supply operation; ties to system ground in most applications. |
| 4 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor placed adjacent to pin for noise suppression. |
| 5 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ loads while maintaining <2mV DC error - suitable for direct ADC input driving. |
Key Features
| Feature | Design Value |
|---|---|
| VCC/2 internal bias | Eliminates external bias resistors in AC-coupled configurations, reducing BOM count and PCB area by ≥3 components. |
| 0.1% gain accuracy | Reduces calibration overhead in production test; enables ±0.5% total system gain error without trimming. |
| Rail-to-rail output | Maximizes signal-to-noise ratio when interfacing with 12-bit or higher SAR ADCs operating from same supply. |
| ±17V input fault tolerance | Withstands transient overvoltage on sensor lines without shutdown - critical for industrial I/O and automotive body electronics. |
| 470pF capacitive load drive | Supports direct connection to typical ADC input capacitance (10–30pF) plus 400pF trace capacitance without instability. |
Applications
| Portable Instruments | Smart-Card Readers |
|---|---|
Use Scenario: Amplifying microvolt-level thermocouple or strain gauge outputs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Precision noninverting gain stage with VCC/2 bias enabling rail-to-rail output swing from 3.3V supply. Use Value: 0.1% gain accuracy and 300µA quiescent current extend battery life while maintaining measurement repeatability across temperature. |
Use Scenario: Conditioning analog signals from contactless RFID coil antennas in payment terminals and access control readers. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance preamplifier with ±17V fault protection against ESD discharge during card insertion. Use Value: Internal VCC/2 bias simplifies AC coupling of weak RF envelope signals without DC drift or external bias components. |
| Low-Side Current-Sense | Photodiode Preamps |
Use Scenario: Measuring motor or LED load current by amplifying mV-level shunt voltage in battery-powered tools. IC Role / Device Role / Timing Role: Fixed +5V/V noninverting amplifier referenced to system ground, rejecting common-mode noise from switching regulators. Use Value: Rail-to-rail output ensures full utilization of 0–3.3V ADC input range; 330kHz bandwidth captures PWM ripple without aliasing. |
Use Scenario: Converting nanoamp photocurrents from ambient light or IR sensors into measurable voltage in remote controls. IC Role / Device Role / Timing Role: Transimpedance-capable amplifier with low input bias current (<10pA) and high DC accuracy for DC-coupled optical detection. Use Value: 90nV/√Hz input voltage noise and 4fA/√Hz current noise preserve SNR in low-light conditions without cooling. |
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, identical +5V/V gain, same VCC/2 bias, but rated for –40°C to +85°C industrial temp range (MAX4275AGEUA is automotive-grade AEC-Q100 qualified). | Lacks AEC-Q100 qualification; not recommended for automotive body electronics or under-hood modules. | Select MAX4175EUK-T for cost-sensitive industrial instrumentation where automotive qualification is unnecessary. |
| AD8275ARMZ | Fixed +0.2V/V gain, rail-to-rail input/output, 2.7–5.5V supply, 1.2mA supply current, no internal VCC/2 bias - requires external biasing for single-supply use. | Designed for high-voltage differential sensing (±10V input); unsuitable for low-gain, low-power portable applications. | Choose AD8275ARMZ only when scaling down ±10V sensor outputs to 0–5V ADC ranges; not a functional substitute for +5V/V single-ended gain. |
Compared with MAX4175EUK-T, MAX4275AGEUA adds AEC-Q100 qualification and tighter gain drift over temperature; compared with AD8275ARMZ, it offers lower power, integrated biasing, and matched gain topology - making it uniquely suited for battery-powered, single-supply, medium-gain signal chains.
Availability
MAX4275AGEUA is available at Aetrix Electronics and suitable for portable instruments, smart-card readers, and low-side current-sense applications requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for MAX4275AGEUA 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 demanding industrial, automotive, and communications applications.
The MAX4275AGEUA belongs to the GainAmp™ family of fixed-gain amplifiers, engineered to replace discrete op-amp-plus-resistor circuits with monolithic, laser-trimmed solutions for space- and power-constrained signal conditioning.
FAQ
What is the exact gain configuration and accuracy of the MAX4275AGEUA?
The MAX4275AGEUA is a noninverting fixed-gain amplifier with precisely trimmed +5V/V gain. Its internal RF/RG resistor network achieves 0.1% gain accuracy over temperature, verified by Maxim's production testing at +25°C and guaranteed by design across –40°C to +125°C. This eliminates need for external gain resistors and reduces calibration effort in final test.
Does the MAX4275AGEUA require external biasing for single-supply operation?
No - the MAX4275AGEUA includes dual 150kΩ internal resistors that form a precise VCC/2 voltage divider at the IN+ pin, eliminating external bias components. This feature enables true AC-coupled operation with maximum output swing and zero DC offset in single-supply systems such as portable medical sensors and battery-powered IoT nodes.
What is the maximum capacitive load the MAX4275AGEUA can drive without oscillation?
The MAX4275AGEUA remains stable with capacitive loads up to 470pF when driving a 100kΩ load, as confirmed in Maxim's Electrical Characteristics table and Typical Operating Characteristics (Figure 12). No isolation resistor is required for this load level, simplifying layout and preserving signal integrity in ADC interface and filter applications.
How does the ±17V input fault protection work in the MAX4275AGEUA?
The MAX4275AGEUA incorporates back-to-back SCR structures and diode clamps at both IN+ and IN– pins, limiting fault current to <3.5mA when either input is driven to ±17V relative to VEE. This protects the internal op-amp core and upstream signal sources during ESD events or cable disconnect transients - a key requirement in automotive keyless entry and industrial fieldbus interfaces.
Is the MAX4275AGEUA pin-compatible with other GainAmp devices like the MAX4175?
Yes - the MAX4275AGEUA uses the standard SOT23-5 pinout shared across the MAX4174/MAX4175/MAX4274/MAX4275 family: Pin 1 = IN–, Pin 2 = IN+, Pin 3 = VEE, Pin 4 = VCC, Pin 5 = OUT. This allows drop-in replacement in existing layouts, though users must verify temperature grade (MAX4275AGEUA is automotive AEC-Q100 qualified) and gain code compatibility.
MAX4275AGEUA 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:
- 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 FAQ
1.How can I place an order for MAX4275AGEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275AGEUA 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 reliable?
The price and inventory of MAX4275AGEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275AGEUA is usually 5 days.
3.What payment methods are accepted for MAX4275AGEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275AGEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275AGEUA?
MAX4275AGEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275AGEUA 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?
For technical support, including MAX4275AGEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275AGEUA requirements.
6.How does Aetrix verify that MAX4275AGEUA is sourced from the original manufacturer or authorized distributors?
All MAX4275AGEUA 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 meets industry standards.
7.What is the process for return or replacement of MAX4275AGEUA?
All MAX4275AGEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275AGEUA, 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 part is unused and in its original packaging.
Return procedure for MAX4275AGEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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