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Analog Devices Inc./Maxim Integrated MAX4075BAESA
- Part No.:
- MAX4075BAESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4075BAESA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,977
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Product details
Overview
MAX4075BAESA from Maxim Integrated is a fixed-gain, rail-to-rail output operational amplifier in an 8-pin SO package, featuring factory-trimmed internal resistors for ±0.1% gain accuracy, +2.5V to +5.5V single-supply operation, 34µA supply current, and ±17V input fault protection. It delivers noninverting gain of +101V/V and is used in low-side current-sense amplification and photodiode preamplification where precision, micropower, and robust input handling are critical.
For engineers reviewing the MAX4075BAESA datasheet, MAX4075BAESA pinout, MAX4075BAESA application, or MAX4075BAESA equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The MAX4075BAESA implements a decompensated op-amp core optimized for fixed noninverting gain (+101V/V), achieving 4MHz gain-bandwidth product while maintaining stability with up to 100pF capacitive loads. Its input stage integrates back-to-back SCR structures and diode clamps with 5kΩ series limiting on IN+, enabling ±17V fault tolerance without phase reversal or excessive current draw.
This device operates as a complete gain block-no external resistors required-using laser-trimmed RF/RG network (RF/RG = 100) to set gain. The SOT23-5 pinout of its single-channel sibling (MAX4074) is not applicable; MAX4075BAESA uses an 8-pin SO layout with dual-channel topology (INA+/INA−/OUTA and INB+/INB−/OUTB), though only one channel is populated and functional per device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Configuration | Noninverting, fixed +101V/V - eliminates external resistor selection, layout, and matching errors; enables direct replacement of discrete op-amp + resistor networks. |
| Supply Voltage Range | +2.5V to +5.5V - supports Li-ion battery-powered systems (3.0–4.2V nominal) and 3.3V/5V logic domains without level-shifting. |
| Supply Current | 34µA per amplifier - enables multi-year operation in coin-cell–powered sensor nodes and portable instrumentation. |
| Input Fault Protection | ±17V at either input - withstands automotive load-dump transients, ESD events, and miswiring in industrial I/O modules without latch-up or damage. |
| Gain Accuracy | ±0.1% (RF/RG ratio) - ensures consistent signal scaling across production batches; reduces calibration overhead in precision measurement front-ends. |
| Output Swing | Rail-to-rail into 1kΩ - delivers full dynamic range at VCC = 2.5V (e.g., 0.02V to 2.48V), maximizing ADC utilization in low-voltage data acquisition. |
| GBW Product | 4MHz at AV = +101V/V - supports bandwidth-critical applications like fast photodiode pulse detection (e.g., >30kHz signal content) without sacrificing DC accuracy. |
Pinout & Package
MAX4075BAESA is housed in an 8-pin SO (Small Outline) package, measuring 4.9mm × 3.9mm × 1.75mm, with standard JEDEC MS-012AC footprint and gull-wing leads. It is rated for -40°C to +70°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input of Channel A - connected internally to RG resistor; voltage range limited to VEE −0.15V to VCC −1.2V; requires biasing within valid common-mode window for linear operation. |
| 2 | INA+ | Noninverting input of Channel A - protected by 5kΩ series resistor and SCR/diode clamp; accepts ±17V faults relative to VEE without damage or excessive current (<3.5mA). |
| 3 | OUTA | Amplified output of Channel A - rail-to-rail swing into 1kΩ; drives ADC inputs or comparator thresholds directly; stable with ≤100pF capacitive load. |
| 4 | VEE | Negative supply / ground reference - must be connected to system ground or negative rail; serves as return path for input bias current and output load current. |
| 5 | VCC | Positive supply - supplies core op-amp and internal trimming circuitry; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for noise immunity. |
| 6 | INB+ | Noninverting input of Channel B - unused in MAX4075BAESA; left unconnected or tied to VEE; no internal connection to active circuitry. |
| 7 | INB− | Inverting input of Channel B - unused; no internal connection; must remain floating or grounded to avoid parasitic coupling. |
| 8 | OUTB | Output of Channel B - not bonded out; electrically isolated; no function in MAX4075BAESA. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed RF/RG network | Enables +101V/V noninverting gain with ±0.1% accuracy - eliminates 2–4 external precision resistors, reducing BOM count, PCB area, and thermal drift errors. |
| Rail-to-rail output stage | Delivers 0.02V to VCC − 0.02V swing into 1kΩ at 2.5V supply - maximizes SNR when interfacing with 10-bit+ SAR ADCs in battery-constrained systems. |
| ±17V input fault protection | Prevents latch-up or damage during ±12V industrial field-wire transients - removes need for external TVS diodes or series current-limiting resistors in analog front-ends. |
| Micropower operation (34µA) | Supports always-on sensing with <1µA average current in duty-cycled systems - extends shelf life of sealed medical or environmental monitors. |
| Stability with 100pF capacitive load | Eliminates need for isolation resistors when driving long traces or ADC input capacitance - simplifies layout and preserves phase margin in high-impedance sensor interfaces. |
Applications
| Photodiode Preamp | Low-Side Current Sensing |
|---|---|
Use Scenario: Amplifying weak, high-impedance current signals from silicon photodiodes in optical smoke detectors or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with fixed +101V/V gain, converting photocurrent to measurable voltage while rejecting ambient light-induced DC offset. Use Value: Factory-trimmed gain eliminates manual calibration; rail-to-rail output ensures full-scale use of 3.3V ADC; ±17V fault tolerance guards against ESD during sensor handling. | Use Scenario: Measuring load current in 12V automotive body-control modules via shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Precision noninverting amplifier configured for +101V/V gain to resolve 10mV shunt drops into 1.01V full-scale output for microcontroller ADC sampling. Use Value: ±17V input protection withstands load-dump spikes; 34µA quiescent current minimizes impact on standby power budget; SO package supports automated assembly. |
| Smart-Card Reader Interface | Infrared Remote Receiver Front-End |
Use Scenario: Conditioning analog voltage signals from ISO 7816 smart-card contact interfaces during card insertion and power-up sequences. IC Role / Device Role / Timing Role: Fixed-gain buffer isolating card I/O pins from host controller, providing gain-stable signal translation across varying supply voltages (2.5–5.5V). Use Value: Single-supply operation matches card-reader power rails; 0.1% gain accuracy ensures consistent signal amplitude for secure cryptographic handshake timing. | Use Scenario: Amplifying modulated IR carrier signals (30–56kHz) from phototransistor receivers in consumer remote control systems. IC Role / Device Role / Timing Role: High-bandwidth, low-noise preamplifier with +101V/V gain to boost weak IR pulses before demodulation and decoding. Use Value: 4MHz GBW supports clean amplification of 56kHz carrier harmonics; micropower operation extends battery life in remote handsets; SO package fits compact receiver PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4075AEASA | +101V/V gain, same SO-8 package, but top mark "AE" indicates +101V/V variant with identical electrical specs and pinout. | No functional difference; differs only in packaging date code and traceability - suitable for cross-shipments or second-source procurement. | Select MAX4075AEASA when MAX4075BAESA is unavailable; verify top mark matches gain requirement (+101V/V = AE or BA). |
| AD8236ARMZ | Instrumentation amplifier with 100V/V gain, 1.5V/V to 1000V/V programmable via external resistor, 55µA supply current, no ±17V fault protection. | Requires external gain-setting resistor and dual supply (±1.35V min); lacks integrated fault protection - demands additional protection circuitry for industrial use. | Choose AD8236ARMZ only if programmable gain or higher CMRR (>100dB) is required; MAX4075BAESA offers lower power, built-in protection, and simpler layout. |
Compared with MAX4075AEASA, MAX4075BAESA offers identical performance and pin compatibility, differing only in manufacturing lot; versus AD8236ARMZ, MAX4075BAESA provides lower quiescent current, integrated fault protection, and zero external components - reducing total solution size and validation effort for fixed-gain, single-supply applications.
Availability
MAX4075BAESA is available at Aetrix Electronics and suitable for photodiode preamplification, low-side current sensing, and smart-card reader interface applications requiring stable component supply, long-term lifecycle support, and guaranteed gain accuracy.
Supply support for MAX4075BAESA 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, automotive, communications, and computing markets.
The MAX4075BAESA belongs to the GainAmp™ family of fixed-gain op amps, engineered to replace discrete op-amp + resistor configurations with factory-trimmed, space-saving, high-accuracy gain blocks for portable and power-sensitive systems.
FAQ
What is the exact gain configuration and value of the MAX4075BAESA?
The MAX4075BAESA is a noninverting fixed-gain amplifier with precisely trimmed +101V/V gain. This value is confirmed by the "BA" top mark in the Gain Selector Guide and corresponds to RF/RG = 100. The device requires no external resistors to achieve this gain, delivering ±0.1% accuracy over temperature and supply voltage variations.
Does the MAX4075BAESA support single-supply operation, and what is its minimum supply voltage?
Yes, the MAX4075BAESA operates from a single +2.5V to +5.5V supply. Its minimum supply voltage is +2.5V, enabling compatibility with 2.5V logic systems and partially discharged lithium coin cells. At 2.5V, it maintains rail-to-rail output swing and specified gain accuracy, making it suitable for ultra-low-voltage portable instrumentation.
What does the ±17V input fault protection on the MAX4075BAESA actually protect against, and how does it work?
The ±17V input fault protection on the MAX4075BAESA prevents damage or phase reversal when inputs exceed the normal common-mode range. It uses back-to-back SCR structures and diode clamps at IN+ and IN−, with current limiting via internal 5kΩ (IN+) and RG (IN−) resistors. During a ±17V transient, input current remains below 3.5mA, protecting both the MAX4075BAESA and upstream signal sources.
Is the MAX4075BAESA pin-compatible with other devices in the MAX4074–MAX4078 family, such as the MAX4074 or MAX4076?
No, the MAX4075BAESA is not pin-compatible with the MAX4074 (SOT23-5) or MAX4076 (SOT23-5 or SO-8). It uses an 8-pin SO package with dedicated INA+/INA−/OUTA/VEE/VCC pins and unconnected INB+/INB−/OUTB pins. Pin mapping differs fundamentally - e.g., MAX4074 places IN+ on pin 3, while MAX4075BAESA places INA+ on pin 2 - requiring PCB redesign for substitution.
Can the MAX4075BAESA drive a 10kΩ load while maintaining rail-to-rail output swing and DC accuracy?
Yes, the MAX4075BAESA guarantees rail-to-rail output swing into a 10kΩ load while preserving excellent DC accuracy, including ±0.1% gain error and sub-millivolt input offset voltage. This capability is explicitly stated in the General Description and confirmed in Electrical Characteristics tables for RL = 10kΩ conditions, supporting direct interfacing with high-impedance ADC inputs or comparator references.
MAX4075BAESA 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:
- 79 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
MAX4075BAESA FAQ
1.How can I place an order for MAX4075BAESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4075BAESA 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 MAX4075BAESA reliable?
The price and inventory of MAX4075BAESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4075BAESA is usually 5 days.
3.What payment methods are accepted for MAX4075BAESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4075BAESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4075BAESA?
MAX4075BAESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4075BAESA 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 MAX4075BAESA?
For technical support, including MAX4075BAESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4075BAESA requirements.
6.How does Aetrix verify that MAX4075BAESA is sourced from the original manufacturer or authorized distributors?
All MAX4075BAESA 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 MAX4075BAESA meets industry standards.
7.What is the process for return or replacement of MAX4075BAESA?
All MAX4075BAESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4075BAESA, 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 MAX4075BAESA part is unused and in its original packaging.
Return procedure for MAX4075BAESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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