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Analog Devices Inc./Maxim Integrated MAX4075AOESA
- Part No.:
- MAX4075AOESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4075AOESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
MAX4075AOESA from Maxim Integrated is a single-channel, fixed-gain, rail-to-rail output operational amplifier in an 8-pin SO package, featuring factory-trimmed internal resistors for ±0.1% gain accuracy, 34µA supply current, +2.5V to +5.5V single-supply operation, and ±17V input fault protection. It delivers noninverting gain of +25V/V and is optimized for low-side current-sense amplification in battery-powered instrumentation.
For engineers reviewing the MAX4075AOESA datasheet, MAX4075AOESA pinout, MAX4075AOESA application, or MAX4075AOESA equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support for production ramp-up.
Technical Context
The MAX4075AOESA integrates a micropower rail-to-rail op amp core with laser-trimmed on-die feedback resistors (RF/RG) to achieve fixed noninverting gain of +25V/V without external components. Its decompensated architecture delivers 120kHz –3dB bandwidth and 4MHz gain-bandwidth product at AV = +25V/V, exceeding unity-gain-stable alternatives by >14× in same gain configuration.
Input fault protection uses back-to-back SCR structures and diode clamps with 5kΩ series limiting at IN+ and RG at IN−, enabling safe operation with ±17V input overvoltage while drawing <3.5mA. The output drives 1kΩ loads rail-to-rail with <25mV VOH/VOL error across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | +25V/V noninverting - eliminates external resistor layout, reduces BOM count, ensures 0.1% accuracy without calibration |
| Supply Current | 34µA at VCC = 3V - enables multi-year battery life in portable sensors and smart-card readers |
| Supply Voltage Range | +2.5V to +5.5V - supports direct interface with Li-ion, 3.3V, and 5V logic rails without level-shifting |
| Input Fault Protection | ±17V at either input - prevents latch-up or damage during hot-plug, ESD transients, or sensor cable disconnects |
| –3dB Bandwidth | 120kHz at AV = +25V/V - sufficient for DC-coupled current sensing up to 10kHz signal content with <0.1% gain error |
| Output Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range at 3.3V supply, enabling 12-bit ADC utilization without gain staging |
| Input Offset Voltage | 0.2mV typical - contributes <5µV error in 25× gain path, critical for sub-mA current measurement precision |
Pinout & Package
MAX4075AOESA is housed in an 8-pin SO (Small Outline) package with standard SOIC-8 footprint (5.3mm × 4.4mm, 1.27mm pitch). Pin 1 is marked with a dot; pin numbering follows counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUTA | Amplifier Output A | Single-ended rail-to-rail output delivering +25×(IN+) voltage; drives 1kΩ load with <25mV headroom |
| 2: INA− | Inverting Input A | Connected internally to RG resistor; not externally accessible-used only for internal feedback network |
| 3: INA+ | Noninverting Input A | Main signal input; accepts common-mode range from VEE −0.15V to VCC −1.2V; protected to ±17V |
| 4: VEE | Negative Supply / Ground | Reference node for dual-supply (±1.25V to ±2.75V) or ground return in single-supply operation |
| 5: VCC | Positive Supply | Accepts +2.5V to +5.5V; requires 0.1µF ceramic bypass capacitor placed ≤2mm from pin |
| 6: INB− | Inverting Input B | No connection - unused pin in MAX4075 (dual-channel variant MAX4077 uses this pin) |
| 7: INB+ | Noninverting Input B | No connection - reserved for dual-channel family members; left floating or grounded per layout best practice |
| 8: OUTB | Amplifier Output B | No connection - MAX4075 is single-channel; this pin is unconnected and must not be tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed RF/RG resistors | 0.1% gain accuracy at +25V/V eliminates post-assembly calibration and reduces test time in high-volume production |
| Rail-to-rail output stage | Drives 1kΩ load from VEE to VCC with <25mV saturation voltage - preserves full ADC input range at 3.3V supply |
| ±17V input fault tolerance | SCR + diode clamp structure limits input current to <3.5mA during overvoltage - protects both IC and upstream sensor |
| Capacitive-load stability | Stable with up to 100pF load capacitance without isolation resistor - simplifies PCB routing near connectors or long traces |
| Micropower operation | 34µA supply current enables continuous monitoring in energy-harvesting or coin-cell applications with >5-year runtime |
Applications
| Low-Side Current Sensing | Photodiode Preamp |
|---|---|
Use Scenario: Measuring battery discharge current in portable medical devices using a 10mΩ shunt resistor. IC Role / Device Role / Timing Role: Noninverting amplifier with +25V/V gain converts 10mV/A shunt voltage to 250mV/A output for 12-bit ADC digitization. Use Value: 0.2mV offset contributes only 8µA error at 1A full scale; ±17V fault protection survives accidental probe contact with charger rail. |
Use Scenario: Amplifying weak photocurrent from silicon photodiode in infrared remote receiver front-end. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting gain stage with low input bias current (<1nA) minimizes dark-current error. Use Value: 200pA max input bias current avoids signal corruption at pA-level photocurrents; 120kHz bandwidth captures 38kHz carrier envelope. |
| Smart-Card Reader Interface | Bar-Code Scanner Signal Conditioning |
Use Scenario: Amplifying analog voltage from card-contact sensing circuit before microcontroller ADC sampling. IC Role / Device Role / Timing Role: Fixed-gain buffer isolating contact detection circuitry from noisy digital domain; operates from shared 3.3V rail. Use Value: 34µA quiescent current extends standby battery life; rail-to-rail output ensures full 0–3.3V ADC range utilization. |
Use Scenario: Boosting low-amplitude reflected-light signal from CCD linear array in handheld barcode scanner. IC Role / Device Role / Timing Role: High-accuracy gain stage converting 40mVpp optical signal to 1Vpp for comparator thresholding. Use Value: 0.1% gain accuracy ensures consistent decode margin across temperature; ±17V protection guards against ESD from user handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4075TOESA | Same die, different top mark (TO vs AO); identical electrical specs, gain (+25V/V), and package (SO-8). | No functional difference; TO-marked units are from alternate wafer lot or test flow - fully interchangeable in all designs. | Select MAX4075TOESA only if AO-marked stock is unavailable; no layout or qualification impact. |
| INA240A1D | Current-sense amplifier with 20V/V gain, 2.7–5.5V supply, 120µA IQ, and integrated bidirectional sensing; no ±17V fault protection. | Optimized for high-side/low-side current sensing with common-mode range up to 80V; lacks photodiode or general-purpose op amp flexibility. | Choose INA240A1D when measuring high-voltage bus currents; use MAX4075AOESA for general-purpose +25V/V amplification with robust fault tolerance. |
Compared with MAX4075TOESA, the MAX4075AOESA offers identical performance but distinct traceability; versus INA240A1D, it trades higher supply sensitivity and no high-CMRR for lower power, broader application scope, and superior input overvoltage resilience.
Availability
MAX4075AOESA is available at Aetrix Electronics and suitable for low-power instrumentation, portable medical devices, and secure access systems requiring stable component supply with guaranteed long-term availability and full Maxim traceability.
Supply support for MAX4075AOESA 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, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX4075AOESA belongs to the GainAmp™ fixed-gain op amp family, engineered to replace discrete op amp + resistor networks in space-constrained, low-power systems where gain accuracy and fault resilience are critical.
FAQ
What is the exact gain configuration of the MAX4075AOESA?
The MAX4075AOESA is configured for noninverting fixed gain of +25V/V, as confirmed by its AO top mark and the Gain Selector Guide (ADJS code). This gain is achieved via laser-trimmed internal RF/RG resistors with 0.1% accuracy, eliminating need for external gain-setting components. The MAX4075AOESA does not support inverting or adjustable gain modes.
Does the MAX4075AOESA require external compensation capacitors?
No, the MAX4075AOESA does not require external compensation capacitors. Its internal decompensation is factory-optimized for +25V/V gain, ensuring stability with capacitive loads up to 100pF. A 0.1µF ceramic bypass capacitor on VCC is mandatory for noise suppression, but no additional phase-compensation components are needed for standard operation.
Can the MAX4075AOESA operate from a 2.5V supply?
Yes, the MAX4075AOESA is fully specified for operation from +2.5V to +5.5V single supply. At VCC = 2.5V, it maintains rail-to-rail output swing into 1kΩ, 34µA supply current, and ±17V input fault protection. Gain accuracy remains 0.1%, and –3dB bandwidth is reduced to ~90kHz - still sufficient for DC-coupled current sensing below 10kHz.
What is the function of pins 6, 7, and 8 on the MAX4075AOESA?
Pins 6 (INB−), 7 (INB+), and 8 (OUTB) are no-connect (N.C.) terminals on the MAX4075AOESA. This device is a single-channel amplifier; those pins correspond to channel B of the dual-channel MAX4077 and are unconnected internally. They must remain floating or be grounded per PCB layout guidelines - never driven or tied to active signals.
How does the ±17V input fault protection work on the MAX4075AOESA?
The MAX4075AOESA implements ±17V input fault protection using back-to-back SCR structures and diode clamps at both IN+ and IN− pins. During overvoltage, SCRs conduct to shunt excess current, while 5kΩ series resistance at IN+ and RG at IN− limit peak current to <3.5mA. This prevents latch-up, output phase reversal, or permanent damage - verified per Absolute Maximum Ratings table.
MAX4075AOESA 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:
- 0.1V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- 90 kHz
- Current - Input Bias:
- 0.8 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 37µA (x2 Channels)
- Current - Output / Channel:
- 22 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4075AOESA FAQ
1.How can I place an order for MAX4075AOESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4075AOESA 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 MAX4075AOESA reliable?
The price and inventory of MAX4075AOESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4075AOESA is usually 5 days.
3.What payment methods are accepted for MAX4075AOESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4075AOESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4075AOESA?
MAX4075AOESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4075AOESA 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 MAX4075AOESA?
For technical support, including MAX4075AOESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4075AOESA requirements.
6.How does Aetrix verify that MAX4075AOESA is sourced from the original manufacturer or authorized distributors?
All MAX4075AOESA 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 MAX4075AOESA meets industry standards.
7.What is the process for return or replacement of MAX4075AOESA?
All MAX4075AOESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4075AOESA, 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 MAX4075AOESA part is unused and in its original packaging.
Return procedure for MAX4075AOESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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