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Analog Devices Inc./Maxim Integrated MAX4074AOEUK
- Part No.:
- MAX4074AOEUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4074AOEUK.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:543
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Product details
Overview
MAX4074AOEUK from Maxim Integrated is a micropower, fixed-gain, rail-to-rail operational amplifier in SOT23-5 package, featuring factory-trimmed internal resistors for 0.1% gain accuracy, ±17V input fault protection, 34µA supply current, and operation from +2.5V to +5.5V single supply. It serves as a precision signal-conditioning amplifier in low-side current-sense and photodiode preamplifier circuits.
For engineers reviewing the MAX4074AOEUK datasheet, MAX4074AOEUK pinout, MAX4074AOEUK application, or MAX4074AOEUK equivalent, key selection criteria include confirmed 0.1% gain accuracy at AV = +1.25V/V, rail-to-rail output swing into 1kΩ, ±17V input fault tolerance, and SOT23-5 footprint compatibility with space-constrained portable designs.
Technical Context
The MAX4074AOEUK implements a decompensated op-amp core with laser-trimmed on-chip RF/RG resistor network, enabling fixed noninverting gain of +1.25V/V with guaranteed 0.1% accuracy. Its compensation is optimized specifically for this gain setting, delivering 136kHz −3dB bandwidth and stable operation without external components.
Input stage includes back-to-back SCR structures and diode clamps at both IN+ and IN− pins, limiting fault current to <3.5mA under ±17V overvoltage while preventing phase reversal. The VEE pin is grounded in single-supply operation, and the N.C. pin (Pin 5) is unconnected internally.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | +1.25V/V noninverting, factory-trimmed RF/RG ratio with 0.1% accuracy - eliminates external resistor matching and layout sensitivity |
| Supply Voltage | +2.5V to +5.5V single supply - supports direct integration into 3.3V and 5V battery-powered systems |
| Supply Current | 34µA typical at VCC = 3V - enables multi-year operation in coin-cell–powered instrumentation |
| Input Fault Protection | ±17V at IN+ or IN− relative to VEE - protects against transient overvoltage in automotive and industrial sensor interfaces |
| −3dB Bandwidth | 136kHz at AV = +1.25V/V - sufficient for DC-coupled current sensing and low-frequency photodiode amplification |
| Output Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range across supply rails without headroom loss |
| Input Offset Voltage | 0.2mV typical - ensures sub-millivolt error in precision low-side current measurement |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, 0.95mm pitch, JEDEC MO-178AA compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Amplifier output | Delivers rail-to-rail voltage with ≤25mV saturation near rails into 1kΩ; no isolation resistor needed for ≤100pF capacitive loads |
| 2: VEE | Negative supply / ground reference | Connected to system ground in single-supply operation; supports dual-supply down to ±1.25V |
| 3: IN+ | Noninverting input | High-impedance node (1000MΩ) with 5kΩ series current-limiting resistor for ±17V fault protection |
| 4: IN− | Inverting input | Connected to internal RG resistor; voltage range limited by core op-amp input common-mode limits (−0.15V to VCC −1.2V) |
| 5: N.C. | No connection | Internally unconnected; must be left floating - not tied to VCC, VEE, or any other node |
Key Features
| Feature | Design Value |
|---|---|
| Internal gain-setting resistors | Laser-trimmed on-die RF/RG network provides 0.1% gain accuracy without external components or PCB area |
| Rail-to-rail output drive | Swings within 25mV of VCC and VEE into 1kΩ load - preserves full signal range in low-voltage systems |
| ±17V input fault protection | SCR + diode clamp structure limits input fault current to <3.5mA and prevents output phase reversal during overvoltage events |
| Capacitive-load stability | Stable with up to 100pF directly at output - eliminates need for isolation resistors in most sensor interface layouts |
| Micropower operation | 34µA supply current enables use in always-on, battery-backed monitoring nodes with >10-year lifetime |
Applications
| Low-Side Current Sensing | Photodiode Preamp |
|---|---|
Use Scenario: Measuring load current in portable medical devices using a shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Noninverting amplifier with +1.25V/V gain conditions shunt voltage with minimal offset and drift. Use Value: 0.1% gain accuracy and 0.2mV offset ensure ±0.5% full-scale current measurement error without calibration. | Use Scenario: Amplifying weak photocurrent from silicon photodiodes in infrared remote receivers and smoke detectors. IC Role / Device Role / Timing Role: Transimpedance-capable noninverting amplifier with high input impedance and low noise density (150nV/√Hz). Use Value: Rail-to-rail output swing and 136kHz bandwidth support fast pulse detection of IR carrier bursts with minimal distortion. |
| Smart-Card Readers | Keyless Entry Receivers |
Use Scenario: Signal conditioning of analog voltage levels from card interface ICs in contactless smart-card terminals. IC Role / Device Role / Timing Role: Fixed-gain buffer isolating sensitive analog front-end from noisy digital logic sections. Use Value: ±17V input fault protection safeguards against ESD events during card insertion/removal in unshielded enclosures. | Use Scenario: Amplifying low-amplitude RF envelope signals from ASK/OOK receivers in automotive key fob entry systems. IC Role / Device Role / Timing Role: Low-noise, micropower gain stage preceding envelope detector and comparator. Use Value: 34µA quiescent current extends battery life in passive keyless entry (PKE) fobs beyond 3 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4074BOEUK | Gain = +1.5V/V (vs. +1.25V/V); same package, specs, and fault protection | Requires recalibration if used in existing +1.25V/V gain path; suitable where higher gain improves SNR | Select when system gain budget allows +1.5V/V and top-mark "AB" matches board silkscreen |
| MAX4074COEUK | Gain = +2.25V/V; identical SOT23-5 footprint and electrical specs except bandwidth (70kHz) | Lower bandwidth reduces slew-induced distortion in fast-pulse applications but increases gain error margin | Choose for cost-sensitive designs where 70kHz bandwidth suffices and top-mark "AE" is acceptable |
Compared with MAX4074BOEUK and MAX4074COEUK, the MAX4074AOEUK offers the lowest gain (+1.25V/V) and highest bandwidth (136kHz) in the SOT23-5 fixed-gain family, making it optimal for high-fidelity, low-error current sensing where minimal gain-induced offset multiplication is critical.
Availability
MAX4074AOEUK is available at Aetrix Electronics and suitable for portable battery-powered equipment, photodiode preamplifiers, and low-side current-sense applications requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for MAX4074AOEUK 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, communications, and consumer applications.
The MAX4074 series belongs to Maxim's GainAmp™ fixed-gain op amp product line, engineered to replace discrete op-amp-plus-resistor configurations with factory-trimmed, space-saving, high-accuracy alternatives for signal conditioning in size- and power-constrained systems.
FAQ
What is the exact gain configuration of the MAX4074AOEUK?
The MAX4074AOEUK is configured for noninverting fixed gain of +1.25V/V, as indicated by the "A" in the part number suffix and confirmed in the Gain Selector Guide (top mark "ADJB"). This gain is achieved via laser-trimmed internal RF/RG resistors with 0.1% accuracy and is not user-adjustable.
Does the MAX4074AOEUK require external compensation components?
No, the MAX4074AOEUK does not require external compensation components. Its internal decompensation is factory-optimized for +1.25V/V gain, ensuring unity-gain stability and 136kHz −3dB bandwidth without added capacitors or resistors.
Can the MAX4074AOEUK operate from a 3.3V supply?
Yes, the MAX4074AOEUK operates from +2.5V to +5.5V single supply, fully supporting 3.3V nominal systems. At VCC = 3.3V, it maintains 34µA supply current, rail-to-rail output swing, and specified gain accuracy and bandwidth.
What is the function of Pin 5 (N.C.) on the MAX4074AOEUK?
Pin 5 of the MAX4074AOEUK is a no-connect terminal - it is not bonded internally and must remain unconnected on the PCB. Tying Pin 5 to VCC, VEE, or any other node may cause unpredictable behavior or damage.
Is the MAX4074AOEUK compatible with standard SOT23-5 footprints?
Yes, the MAX4074AOEUK uses the industry-standard SOT23-5 package (JEDEC MO-178AA), with 0.95mm lead pitch and 2.9mm × 1.6mm body dimensions, ensuring drop-in compatibility with existing SOT23-5 land patterns and pick-and-place tooling.
MAX4074AOEUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- 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:
- SOT-23-5
MAX4074AOEUK FAQ
1.How can I place an order for MAX4074AOEUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4074AOEUK 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 MAX4074AOEUK reliable?
The price and inventory of MAX4074AOEUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4074AOEUK is usually 5 days.
3.What payment methods are accepted for MAX4074AOEUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4074AOEUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4074AOEUK?
MAX4074AOEUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4074AOEUK 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 MAX4074AOEUK?
For technical support, including MAX4074AOEUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4074AOEUK requirements.
6.How does Aetrix verify that MAX4074AOEUK is sourced from the original manufacturer or authorized distributors?
All MAX4074AOEUK 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 MAX4074AOEUK meets industry standards.
7.What is the process for return or replacement of MAX4074AOEUK?
All MAX4074AOEUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX4074AOEUK, 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 MAX4074AOEUK part is unused and in its original packaging.
Return procedure for MAX4074AOEUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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