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Analog Devices Inc./Maxim Integrated MAX4075AOESA+T
- Part No.:
- MAX4075AOESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4075AOESA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,383
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Product details
Overview
MAX4075AOESA+T from Maxim Integrated is a single-channel, fixed-gain, rail-to-rail output operational amplifier with internal laser-trimmed resistors providing ±0.1% gain accuracy. It delivers noninverting gain of +25V/V, operates from +2.5V to +5.5V single supply, consumes only 34µA quiescent current, and features ±17V input fault protection. It is used in low-side current-sense amplification and photodiode preamplification where precision gain and micropower operation are critical.
For engineers reviewing the MAX4075AOESA+T datasheet, MAX4075AOESA+T pinout, MAX4075AOESA+T application, or MAX4075AOESA+T equivalent, this page provides verified technical context, confirmed pin functions, real-world application mappings, and validated alternative options for space-constrained, battery-powered sensing systems requiring stable DC accuracy and rail-to-rail output swing into 1kΩ.
Technical Context
The MAX4075AOESA+T integrates a decompensated op amp core with factory-laser-trimmed RF/RG resistor network to achieve fixed noninverting gain of +25V/V and 120kHz −3dB bandwidth. Its input stage includes back-to-back SCR structures and diode clamps enabling ±17V fault tolerance without phase reversal or excessive current draw.
Rail-to-rail output drives 1kΩ while maintaining <3.5mV input offset voltage and 0.3µV/°C drift; input common-mode range extends from VEE to (VCC − 1.2V), and it remains stable with capacitive loads up to 100pF without isolation resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | Noninverting, fixed +25V/V - eliminates external resistor selection and layout error, ensures repeatable signal scaling. |
| Supply Voltage Range | +2.5V to +5.5V - supports direct interface with Li-ion, 3.3V, and 5V logic rails without level-shifting. |
| Quiescent Current | 34µA - enables multi-year battery life in portable instrumentation and remote sensors. |
| Input Fault Protection | ±17V on IN+ or IN− - prevents latch-up or damage during transient overvoltage events in automotive or industrial interfaces. |
| Output Swing | Rail-to-rail into 1kΩ - delivers full dynamic range across supply, critical for ADC input conditioning with minimal headroom loss. |
| Gain Accuracy | ±0.1% (RF/RG) - reduces calibration burden in precision measurement systems such as smart-card readers and bar-code scanners. |
| −3dB Bandwidth | 120kHz at AV = +25V/V - provides adequate settling for DC-coupled current sensing and photodiode signals below 10kHz. |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 2.9mm × 1.6mm footprint, 1.1mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier Output | Rail-to-rail voltage output capable of sourcing/sinking ±22mA; drives 1kΩ load with <25mV saturation margin. |
| 2 - VEE | Negative Supply / Ground | Reference node for single-supply operation; must be connected to system ground or negative rail. |
| 3 - IN+ | Noninverting Input | High-impedance input (1000MΩ) with 0.8–1000pA bias current; accepts DC-coupled sensor signals within (VEE + 0.15V) to (VCC − 1.2V). |
| 4 - IN− | Inverting Input | Connected internally to RG resistor; voltage range limited by RG drop-requires careful input biasing to avoid clipping. |
| 5 - VCC | Positive Supply | Accepts +2.5V to +5.5V; requires local 0.1µF ceramic bypass capacitor to ground for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed internal resistors | Enables ±0.1% gain accuracy without external components, reducing PCB area by >30% vs. discrete op amp + resistor networks. |
| Rail-to-rail output with 1kΩ drive | Maintains DC accuracy across full output swing, eliminating need for output buffer stages in low-power data acquisition paths. |
| ±17V input fault protection | Withstands transient overvoltages without latch-up or increased supply current, simplifying front-end protection in harsh environments. |
| Stable with 100pF capacitive load | Eliminates need for series isolation resistors in PCB traces or filter networks, preserving signal integrity in compact layouts. |
| 2.5V–5.5V single-supply operation | Direct compatibility with modern microcontrollers and ADCs, avoiding dual-supply complexity in portable equipment designs. |
Applications
| Low-Side Current Sensing | Photodiode Preamp |
|---|---|
|
Use Scenario: Monitoring battery discharge current in portable medical devices using shunt resistor between load and ground. IC Role / Device Role / Timing Role: Noninverting amplifier with +25V/V gain converts mV-level shunt voltage to measurable 0–2.5V range for 12-bit ADC. Use Value: 34µA supply current extends device runtime; ±0.1% gain accuracy enables <1% current measurement error without per-unit calibration. |
Use Scenario: Amplifying weak photocurrent from silicon PIN photodiode in infrared remote control receivers. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting gain stage converting 10nA–1µA photocurrent to 100mV–2.5V output. Use Value: Rail-to-rail output ensures full signal swing into ADC; 120kHz bandwidth supports pulse detection up to 10kHz carrier frequencies. |
| Smart-Card Reader Interface | Bar-Code Scanner Signal Conditioning |
|
Use Scenario: Amplifying analog voltage from card-contact sensing circuitry during ISO 7816 protocol handshaking. IC Role / Device Role / Timing Role: Precision gain block scaling contact voltage to match MCU analog comparator threshold with minimal offset drift. Use Value: 0.3µV/°C input offset drift maintains accuracy across −40°C to +70°C operating range; SOT23-5 footprint fits tight card-slot PCBs. |
Use Scenario: Boosting low-amplitude reflected-light signals from linear CCD array in handheld bar-code scanners. IC Role / Device Role / Timing Role: Fixed-gain amplifier boosting 50mV peak signal to 1.25V for high-SNR digitization by 10-bit ADC. Use Value: 100pF capacitive-load stability allows direct connection to long flex-cable traces; ±17V fault protection guards against ESD during 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 |
|---|---|---|---|
| MAX4075BOESA+T | Same package and architecture, but +50V/V noninverting gain; 50kHz −3dB bandwidth; identical 34µA ICC and ±17V fault rating. | Used where higher gain is needed to resolve sub-mV signals without additional amplification stages. | Select when system signal chain requires ≥50× gain and can accept reduced bandwidth; not interchangeable without schematic revision. |
| MAX4075COESA+T | Same SOT23-5 package, +101V/V noninverting gain; 38kHz −3dB bandwidth; same 34µA ICC and ±17V fault protection. | Applied in ultra-low-level sensing (e.g., thermopile outputs) where maximum gain before ADC is critical. | Choose only if gain >25× is mandatory and bandwidth >10kHz is not required; gain mismatch invalidates direct substitution. |
Compared with MAX4075BOESA+T and MAX4075COESA+T, the MAX4075AOESA+T offers optimal balance of gain (+25V/V), bandwidth (120kHz), and power (34µA) for general-purpose precision amplification in portable equipment-making it the default choice unless higher gain or different bandwidth is explicitly required.
Availability
MAX4075AOESA+T is available at Aetrix Electronics and suitable for low-side current-sense amplifiers, photodiode preamplifiers, and smart-card reader interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX4075AOESA+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, mixed-signal, and power-management ICs for industrial, medical, and portable applications.
The MAX4075AOESA+T belongs to the GainAmp™ family of fixed-gain op amps, engineered to replace discrete op amp + resistor networks in space-constrained, micropower sensing systems while guaranteeing gain accuracy and fault resilience.
FAQ
What is the exact gain configuration and value of the MAX4075AOESA+T?
The MAX4075AOESA+T is configured as a noninverting amplifier with a fixed gain of +25V/V. This value is permanently set by internal laser-trimmed resistors RF and RG, achieving ±0.1% accuracy across temperature and supply voltage. The gain is not adjustable and is confirmed in the Gain Selector Guide (top mark "ADJS") and Electrical Characteristics table for MAX4074/MAX4075.
Does the MAX4075AOESA+T support single-supply operation, and what is its valid supply range?
Yes, the MAX4075AOESA+T supports true single-supply operation from +2.5V to +5.5V. It is fully specified across this range, with rail-to-rail output swing, 34µA supply current, and functional performance maintained at minimum 2.5V. No dual-supply configuration is required, and VEE is tied to ground in single-supply use.
What is the purpose of the N.C. pins on the MAX4075AOESA+T, and are they safe to leave unconnected?
The MAX4075AOESA+T is a single-channel device in SOT23-5 package and has no N.C. pins. All five pins (OUT, VEE, IN+, IN−, VCC) are functional and must be connected per the pinout table. Confusion may arise from the MAX4075 dual version (in µMAX/SO packages) which does include N.C. pins-but the MAX4075AOESA+T specifically denotes the SOT23-5 single-channel variant.
How does the ±17V input fault protection work on the MAX4075AOESA+T, and what current flows during a fault?
The MAX4075AOESA+T uses back-to-back SCR structures plus diode clamps at IN+ and IN−, limiting fault current to <3.5mA when either input is driven to ±17V relative to VEE. Internal 5kΩ resistor on IN+ and RG on IN− limit clamp current, preventing damage to the core op amp or external signal source-verified in Absolute Maximum Ratings and Applications Information sections.
Can the MAX4075AOESA+T drive a 100pF capacitive load without oscillation, and is an isolation resistor required?
Yes, the MAX4075AOESA+T is explicitly characterized for stability with capacitive loads up to 100pF without any external isolation resistor. This is confirmed in the Capacitive Load Stability specification (CLOAD = 100pF, "No sustained oscillations") and Typical Operating Characteristics (Figures 9–10). Adding a series resistor is unnecessary-and would degrade bandwidth and step response-unless load exceeds 100pF.
MAX4075AOESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4075AOESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4075AOESA+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 MAX4075AOESA+T reliable?
The price and inventory of MAX4075AOESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4075AOESA+T is usually 5 days.
3.What payment methods are accepted for MAX4075AOESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4075AOESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4075AOESA+T?
MAX4075AOESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4075AOESA+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 MAX4075AOESA+T?
For technical support, including MAX4075AOESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4075AOESA+T requirements.
6.How does Aetrix verify that MAX4075AOESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4075AOESA+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 MAX4075AOESA+T meets industry standards.
7.What is the process for return or replacement of MAX4075AOESA+T?
All MAX4075AOESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4075AOESA+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 MAX4075AOESA+T part is unused and in its original packaging.
Return procedure for MAX4075AOESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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