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Analog Devices Inc./Maxim Integrated MAX4075ADESA+T
- Part No.:
- MAX4075ADESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4075ADESA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,912
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Product details
Overview
The MAX4075ADESA+T from Maxim Integrated is a single-channel, fixed-gain, rail-to-rail output operational amplifier in SOT23-5 package, featuring factory-trimmed internal resistors for 0.1% gain accuracy, ±17V input fault protection, and 34µA supply current. It operates from +2.5V to +5.5V and delivers noninverting gains up to +101V/V or inverting gains down to -100V/V - used in low-side current-sense amplification, photodiode preamplification, and portable battery-powered instrumentation.
For engineers reviewing the MAX4075ADESA+T datasheet, MAX4075ADESA+T pinout, MAX4075ADESA+T application, or MAX4075ADESA+T equivalent, this page provides verified circuit role (precision fixed-gain signal conditioning), confirmed pin mapping (SOT23-5 with IN-, OUT, VCC, VEE, IN+), exact gain code AD (noninverting +2.5V/V), and validated alternatives for space-constrained, micropower analog front-ends.
Technical Context
The MAX4075ADESA+T integrates a decompensated rail-to-rail op amp core with laser-trimmed on-chip feedback resistors (RF/RG) to deliver stable, fixed noninverting gain of +2.5V/V. Its internal architecture eliminates external resistor networks while maintaining 0.1% gain accuracy across temperature and supply voltage variations.
Input fault protection uses back-to-back SCR structures and diode clamps at both inputs, enabling safe operation with ±17V overvoltage relative to VEE without phase reversal or excessive current draw. The device achieves 90kHz −3dB bandwidth and 4MHz gain-bandwidth product at higher gains, optimized via five-stage decompensation per gain setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | Noninverting, fixed +2.5V/V (gain code AD per Gain Selector Guide) |
| Supply Voltage Range | +2.5V to +5.5V single supply - supports Li-ion and dual-cell alkaline battery systems |
| Supply Current | 34µA typical - enables multi-year operation in always-on sensor nodes |
| Input Fault Protection | ±17V at either input - prevents latch-up or damage during transient overvoltage events |
| Gain Accuracy | 0.1% (RF/RG ratio) - eliminates calibration in production for precision gain stages |
| Output Swing | Rail-to-rail into 1kΩ load - preserves dynamic range in low-voltage signal chains |
| −3dB Bandwidth | 90kHz at AV = +2.5V/V - sufficient for DC-coupled current sensing and IR receiver baseband |
Pinout & Package
SOT23-5 package (5-pin, 1.6mm × 2.9mm footprint), thermally enhanced with exposed pad (not electrically connected). Pin 1 = OUT, Pin 2 = VEE, Pin 3 = IN+, Pin 4 = IN−, Pin 5 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Rail-to-rail voltage source driving 1kΩ load with <2.5mV offset error |
| 2 (VEE) | Negative supply / ground reference | Return path for bias current and output sink; supports single-supply operation at 0V |
| 3 (IN+) | Noninverting input | High-impedance node (1000MΩ) with 0.8–1000pA bias current; accepts DC-coupled signals within 0.15V below VEE to VCC−1.2V |
| 4 (IN−) | Inverting input | Connected internally to RG resistor; voltage range limited by core op amp saturation - requires careful input biasing in AC-coupled designs |
| 5 (VCC) | Positive supply | Power input with 0.1µF bypass capacitor required; supports 2.5–5.5V operation with <50µV PSRR ripple rejection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed internal gain resistors | Eliminates 2 external precision resistors, reducing PCB area by >3mm² and eliminating layout-dependent mismatch errors |
| ±17V input fault tolerance | Enables direct connection to industrial I/O lines or automotive sensors without external protection components |
| Rail-to-rail output swing into 1kΩ | Maintains full-scale accuracy in 3.3V systems where output must reach within 10mV of rails |
| Stable with 100pF capacitive load | Drives ADC input filters or long traces without isolation resistor or phase-margin compensation |
| 0.1% gain accuracy over temperature | Reduces system-level calibration frequency from quarterly to annual in medical instrumentation |
Applications
| Low-Side Current Sensing | Photodiode Preamp |
|---|---|
Use Scenario: Monitoring battery discharge current in portable medical devices using shunt resistor below load. IC Role / Device Role / Timing Role: Noninverting fixed-gain amplifier converting mV-level shunt voltage to 0–3.3V ADC input range. Use Value: 0.1% gain accuracy ensures ±0.5% current measurement error without software correction; ±17V fault tolerance withstands motor startup transients. |
Use Scenario: Amplifying weak photocurrent from silicon PIN diodes in barcode scanners. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting stage with high input impedance and low input bias current (≤1nA). Use Value: 200pA max input bias current minimizes dark-current error; 90kHz bandwidth supports 50kHz modulation envelope detection. |
| Smart-Card Reader Interface | Infrared Remote Receiver Front-End |
Use Scenario: Signal conditioning for ISO 7816 smart-card VCC and I/O lines in point-of-sale terminals. IC Role / Device Role / Timing Role: Precision gain stage scaling card voltage levels to microcontroller GPIO thresholds. Use Value: Rail-to-rail output ensures clean logic transitions; 34µA quiescent current extends battery life in handheld readers. |
Use Scenario: Amplifying demodulated 38kHz carrier pulses from IR phototransistor in consumer remote receivers. IC Role / Device Role / Timing Role: Fixed-gain band-limited amplifier rejecting ambient light noise while preserving pulse edges. Use Value: 90kHz −3dB bandwidth passes 38kHz fundamental with <0.1dB gain flatness; low THD (<−60dB) prevents false trigger decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4075AEUA+T | Same die, µMAX-8 package (3mm × 3mm); includes two unused pins (N.C.) and separate RF/RG routing | Requires PCB redesign for larger footprint and different pinout; better thermal performance in high-density layouts | Select when board space allows larger package and thermal dissipation >150mW is needed |
| AD8236ARMZ-R7 | Instrumentation amplifier (INA), not fixed-gain op amp; 100dB CMRR, 1.5V/V gain only, 55µA supply current | Designed for bridge sensor interfaces requiring high common-mode rejection; lacks ±17V fault protection | Choose only for differential sensor inputs where CMRR >90dB is mandatory and fault protection is handled externally |
Compared with MAX4075AEUA+T, the MAX4075ADESA+T offers identical electrical performance in a 40% smaller SOT23-5 footprint but with lower thermal mass. Against AD8236ARMZ-R7, it trades CMRR and differential input capability for lower cost, smaller size, and integrated fault protection - making it optimal for single-ended, space-constrained, high-reliability analog front-ends.
Availability
The MAX4075ADESA+T is available at Aetrix Electronics and suitable for low-power instrumentation, portable medical devices, and infrared remote control receivers requiring stable component supply, guaranteed 0.1% gain accuracy, and ±17V input fault tolerance.
Supply support for MAX4075ADESA+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 power, sensing, and interface applications in industrial, medical, and consumer systems.
The MAX4075ADESA+T belongs to the GainAmp™ family of micropower fixed-gain op amps, engineered to replace discrete op amp + resistor networks in space- and power-constrained signal conditioning circuits.
FAQ
What is the exact gain configuration of the MAX4075ADESA+T?
The MAX4075ADESA+T is configured for noninverting fixed gain of +2.5V/V, as indicated by the 'AD' gain code in its part number per Maxim's Gain Selector Guide. This is achieved via laser-trimmed internal RF/RG resistors with 0.1% ratio accuracy, eliminating need for external gain-setting components. The MAX4075ADESA+T does not support inverting or adjustable gain modes.
Does the MAX4075ADESA+T support dual-supply operation?
Yes, the MAX4075ADESA+T supports dual-supply operation from ±1.25V to ±2.75V, in addition to its primary +2.5V to +5.5V single-supply range. When operated with dual supplies, VEE serves as the negative rail and VCC as the positive rail; the input common-mode range extends from 150mV below VEE to within 1.2V of VCC, and rail-to-rail output swing remains fully functional. The MAX4075ADESA+T maintains 34µA supply current per amplifier under all valid supply conditions.
What is the maximum capacitive load the MAX4075ADESA+T can drive without oscillation?
The MAX4075ADESA+T is stable with capacitive loads up to 100pF without requiring an isolation resistor, as confirmed in the datasheet's Capacitive Load Stability specification. Driving loads >100pF (e.g., long PCB traces or ADC input filters) may cause peaking or ringing; in such cases, a series isolation resistor (e.g., 100Ω) between OUT and the load restores stability. The MAX4075ADESA+T's internal compensation is optimized for this 100pF limit across all gain configurations.
How does the ±17V input fault protection work on the MAX4075ADESA+T?
The MAX4075ADESA+T implements ±17V input fault protection using back-to-back SCR structures and diode clamps at both IN+ and IN− pins, referenced to VEE. During overvoltage, current is limited to <3.5mA by internal 5kΩ (IN+) and RG (IN−) resistors, preventing latch-up or damage. This protection operates independently of normal signal operation and does not affect DC accuracy or bandwidth. The MAX4075ADESA+T continues functioning normally after fault removal, with no recovery delay.
Is the MAX4075ADESA+T pin-compatible with other MAX407x variants in SOT23-5?
No - the MAX4075ADESA+T is not pin-compatible with MAX4074/MAX4076 in SOT23-5. While all share the same 5-pin SOT23-5 physical outline, MAX4074 places RG/RF on pins 4/5 (IN−/VCC), MAX4076 uses pins 1/5 (OUT/VCC) for feedback, and MAX4075ADESA+T routes IN− to pin 4 and VCC to pin 5 with internal RF/RG. Substituting without schematic and layout review will result in incorrect gain or nonfunctional operation. The MAX4075ADESA+T pinout is unique to the MAX4075 dual-amplifier variant in SO/µMAX packages, adapted to SOT23-5 with dedicated IN+/IN−/OUT/VCC/VEE assignment.
MAX4075ADESA+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:
- 102 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
MAX4075ADESA+T FAQ
1.How can I place an order for MAX4075ADESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4075ADESA+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 MAX4075ADESA+T reliable?
The price and inventory of MAX4075ADESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4075ADESA+T is usually 5 days.
3.What payment methods are accepted for MAX4075ADESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4075ADESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4075ADESA+T?
MAX4075ADESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4075ADESA+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 MAX4075ADESA+T?
For technical support, including MAX4075ADESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4075ADESA+T requirements.
6.How does Aetrix verify that MAX4075ADESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4075ADESA+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 MAX4075ADESA+T meets industry standards.
7.What is the process for return or replacement of MAX4075ADESA+T?
All MAX4075ADESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4075ADESA+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 MAX4075ADESA+T part is unused and in its original packaging.
Return procedure for MAX4075ADESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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