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Analog Devices Inc./Maxim Integrated MAX4275BAEUA
- Part No.:
- MAX4275BAEUA
- 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:
-
MAX4275BAEUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,061
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Product details
Overview
MAX4275BAEUA from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal VCC/2 biasing, rail-to-rail output, and 0.1% gain accuracy. It delivers +5V/V gain, operates from +2.5V to +5.5V single supply, consumes only 300µA, and withstands ±17V input faults-ideal for low-side current-sense and photodiode preamp circuits in portable instrumentation.
For engineers reviewing the MAX4275BAEUA datasheet, MAX4275BAEUA pinout, MAX4275BAEUA application, or MAX4275BAEUA equivalent, this page provides verified technical context, confirmed pin functions, real-world application cards, and two validated alternative parts for single-supply signal conditioning designs requiring precision gain and fault tolerance.
Technical Context
The MAX4275BAEUA integrates a rail-to-rail op-amp core with laser-trimmed internal feedback resistors (RF/RG) and dual 150kΩ resistors forming a VCC/2 bias network at the noninverting input. This eliminates external bias components in AC-coupled single-supply systems.
It is decompensated for optimal bandwidth at +5V/V gain (23MHz GBW product), supports capacitive loads up to 470pF without isolation, and features back-to-back SCR input protection enabling ±17V fault tolerance without phase reversal or excessive current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +5V/V noninverting, factory-set with 0.1% RF/RG accuracy-enables precise signal scaling without external resistors. |
| Supply Voltage | +2.5V to +5.5V single supply-supports battery-powered and low-voltage industrial systems. |
| Supply Current | 300µA per amplifier-minimizes power budget in always-on sensor interfaces. |
| Input Fault Protection | ±17V on IN+ or IN−-prevents latch-up or damage during transient overvoltage events in harsh environments. |
| Capacitive Load Stability | Stable up to 470pF-drives ADC input filters or long traces without added isolation resistor. |
| Output Swing | Rail-to-rail into 1kΩ load-maximizes dynamic range across full supply voltage. |
| GBW Product | 23MHz at +5V/V-delivers >330kHz −3dB bandwidth for fast pulse amplification in IR receivers. |
Pinout & Package
SOT23-5 package: compact 5-pin surface-mount housing with exposed pad for thermal performance; footprint compatible with industry-standard SOT23 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Connected internally to RG; accepts differential or inverted signal; limited to VEE–0.15V to VCC–1.2V common-mode range. |
| 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 (0V) or negative rail in dual-supply configurations. |
| 4 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires 0.1µF bypass capacitor to ground for noise suppression. |
| 5 (OUT) | Amplifier output | Rail-to-rail capable; drives 1kΩ load while maintaining DC accuracy; stable with ≤470pF capacitive load. |
Key Features
| Feature | Design Value |
|---|---|
| VCC/2 internal bias network | Dual 150kΩ resistors eliminate external bias components-reduces BOM count and PCB area in portable instruments. |
| 0.1% gain accuracy | Laser-trimmed RF/RG ensures consistent signal scaling across temperature and production lots-critical for calibrated sensor front-ends. |
| ±17V input fault tolerance | Back-to-back SCR + diode clamp structure limits input current to <3.5mA-protects both IC and upstream signal source during ESD or surge events. |
| Rail-to-rail output swing | Delivers full-scale output from VEE to VCC into 1kΩ-preserves SNR when driving low-voltage ADCs directly. |
| 470pF capacitive load stability | No isolation resistor required-simplifies layout and avoids phase shift in anti-aliasing filter paths. |
Applications
| Portable Instruments | Smart-Card Readers |
|---|---|
|
Use Scenario: Amplifying low-level analog signals from thermistors or potentiometers in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier with internal VCC/2 bias enables single-supply operation and maximizes ADC input range. Use Value: Eliminates external bias resistors and reduces calibration drift-improves measurement repeatability and extends battery life. |
Use Scenario: Conditioning analog card-detection signals and contact interface voltages in ISO 7816-compliant smart-card readers. IC Role / Device Role / Timing Role: Low-noise, fault-protected gain stage interfacing card I/O pins to microcontroller ADC inputs. Use Value: ±17V input tolerance prevents damage during hot-insertion; rail-to-rail output ensures full ADC utilization. |
| Infrared Receivers for Remote Controls | Low-Side Current-Sense Amplifiers |
|
Use Scenario: Amplifying weak, high-frequency modulated IR photodiode currents in TV remotes and home automation receivers. IC Role / Device Role / Timing Role: High-GBW (+5V/V, 23MHz) amplifier with low input noise (90nV/√Hz) preserving signal integrity at 38kHz carrier. Use Value: Delivers clean, fast pulse response without overshoot-enables reliable demodulation and low-bit-error-rate decoding. |
Use Scenario: Measuring shunt voltage in battery management or motor control systems where load current flows to ground. IC Role / Device Role / Timing Role: Precision noninverting amplifier with VCC/2 bias referenced to shunt's low side-rejects common-mode noise from ground bounce. Use Value: 0.1% gain accuracy ensures current measurement fidelity; ±17V fault rating protects against load dump transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4175BAEUA | Same SOT23-5 package, identical +5V/V gain and VCC/2 bias, but rated for −40°C to +85°C (vs. MAX4275BAEUA's −40°C to +125°C extended temp range). | Not qualified for automotive under-hood or industrial high-temp environments. | Select MAX4275BAEUA when operating above +85°C; otherwise MAX4175BAEUA offers identical performance at lower cost. |
| MAX4275AAEUA | Same package and bias architecture, but +1.25V/V gain (not +5V/V); 0.1% gain accuracy and ±17V fault protection retained. | Suitable for unity-plus-gain applications needing minimal signal boost-e.g., buffer stages before ADCs with small input ranges. | Choose MAX4275AAEUA only if system gain requirement is +1.25V/V; MAX4275BAEUA is not interchangeable due to fixed gain mismatch. |
Compared with MAX4175BAEUA, MAX4275BAEUA adds extended temperature operation up to +125°C for industrial reliability; compared with MAX4275AAEUA, it provides higher +5V/V gain for improved SNR in low-level sensor amplification-making it optimal for precision current sensing and IR receiver front-ends.
Availability
MAX4275BAEUA is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, infrared remote receivers, and low-side current-sense applications requiring stable component supply, guaranteed gain accuracy, and extended temperature operation.
Supply support for MAX4275BAEUA 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 power, sensing, and interface applications in industrial, medical, and consumer systems.
The MAX4275BAEUA belongs to the GainAmp™ family-engineered to replace discrete op-amp-plus-resistor gain blocks with integrated, laser-trimmed fixed-gain amplifiers featuring internal biasing and fault protection for space-constrained, single-supply designs.
FAQ
What is the exact gain configuration of the MAX4275BAEUA?
The MAX4275BAEUA is a noninverting fixed-gain amplifier with precisely trimmed internal resistors delivering +5V/V gain. Its gain is factory-set and unchangeable-no external feedback components are required or supported. This configuration is confirmed in the Gain Selection Guide and Electrical Characteristics table of the official datasheet.
Does the MAX4275BAEUA require external biasing resistors for single-supply operation?
No. The MAX4275BAEUA includes internal 150kΩ/150kΩ resistors that generate a precise VCC/2 bias at the IN+ pin, eliminating the need for external bias networks in AC-coupled single-supply applications. This feature is intrinsic to the MAX4275xx variant and distinguishes it from the MAX4274xx series.
What is the maximum operating temperature for the MAX4275BAEUA?
The MAX4275BAEUA is rated for operation from −40°C to +125°C. This extended temperature range is explicitly specified in the Ordering Information section and Absolute Maximum Ratings table, differentiating it from the standard −40°C to +85°C MAX4175 variants.
Can the MAX4275BAEUA drive a 1000pF capacitive load without oscillation?
No. The MAX4275BAEUA is guaranteed stable only up to 470pF capacitive load without an isolation resistor. Driving 1000pF requires adding a series isolation resistor (e.g., 100Ω) between OUT and the load, as documented in Figure 9 and the Capacitive-Load Stability section of the datasheet.
Is the MAX4275BAEUA pin-compatible with other GainAmp devices in SOT23-5?
Yes-the MAX4275BAEUA shares the identical SOT23-5 pinout (IN−, IN+, VEE, VCC, OUT) with MAX4174/4175/4274/4275 variants. However, functional compatibility depends on gain value and bias architecture: only MAX4175/4275 variants include VCC/2 bias, and gain values are fixed per part number.
MAX4275BAEUA 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:
- 560 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
MAX4275BAEUA FAQ
1.How can I place an order for MAX4275BAEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4275BAEUA 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 MAX4275BAEUA reliable?
The price and inventory of MAX4275BAEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4275BAEUA is usually 5 days.
3.What payment methods are accepted for MAX4275BAEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4275BAEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4275BAEUA?
MAX4275BAEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4275BAEUA 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 MAX4275BAEUA?
For technical support, including MAX4275BAEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4275BAEUA requirements.
6.How does Aetrix verify that MAX4275BAEUA is sourced from the original manufacturer or authorized distributors?
All MAX4275BAEUA 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 MAX4275BAEUA meets industry standards.
7.What is the process for return or replacement of MAX4275BAEUA?
All MAX4275BAEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4275BAEUA, 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 MAX4275BAEUA part is unused and in its original packaging.
Return procedure for MAX4275BAEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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