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Analog Devices Inc./Maxim Integrated MAX4042EUA-T
- Part No.:
- MAX4042EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4042EUA-T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,647
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Product details
Overview
The MAX4042EUA-T from Maxim Integrated is a dual micropower rail-to-rail input/output operational amplifier optimized for low-voltage, battery-powered systems. It operates from a single +2.4V to +5.5V supply, consumes only 10µA per amplifier, delivers 90kHz gain-bandwidth product, and swings within 10mV of rails with 100kΩ load - enabling precision signal conditioning in portable medical sensors and handheld instrumentation.
For engineers reviewing the MAX4042EUA-T datasheet, MAX4042EUA-T pinout, MAX4042EUA-T application, or MAX4042EUA-T equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail I/O capability at sub-2.5V operation, dual-channel isolation performance (–80dB crosstalk at 1kHz), and µMAX-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4042EUA-T integrates two independent amplifiers in an 8-pin µMAX package, each featuring complementary NPN/PNP input stages enabling true rail-to-rail common-mode input range (VEE to VCC) and output swing (within 10mV of rails under 100kΩ load). Its 90kHz GBW and 200µV typical input offset voltage support stable DC-coupled gain stages in sensor front-ends.
No phase reversal occurs during overdriven inputs, and unity-gain stability extends to 200pF capacitive loads - critical for driving ADC input filters or long traces without external compensation. The device guarantees performance across –40°C to +85°C with <3.5mV max input offset voltage over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V single supply - enables direct connection to Li-ion, NiMH, or coin-cell batteries without regulation. |
| Supply Current per Amp | 10µA - allows continuous operation for >1 year on a CR2032 coin cell in always-on sensor nodes. |
| Gain-Bandwidth Product | 90kHz - supports bandwidth-critical applications like ECG front-end filtering or strain gauge amplification up to ~30kHz. |
| Input Offset Voltage | ±0.25mV (max) - ensures <0.5% error in 100mV full-scale bridge sensor outputs without trimming. |
| Rail-to-Rail Output Swing | Within 10mV of VEE/VCC at 100kΩ - maximizes dynamic range in 3.3V or lower ADC reference systems. |
| Crosstalk (A→B) | –80dB at 1kHz - prevents coupling between dual-channel measurements such as differential thermocouple pairs. |
| Input Bias Current | ±2nA (typ) - permits use with high-impedance pH electrodes or piezoelectric sensors without significant loading error. |
Pinout & Package
The MAX4042EUA-T is housed in an 8-pin µMAX package (3.05mm × 3.05mm × 0.8mm), pin-compatible with industry-standard SO-8 but with 55% smaller footprint and improved thermal resistance (θJA = 245°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Amplifier A output | High-impedance when unused; drives 25kΩ load to within 60mV of rails; no phase reversal on overdrive. |
| 2 (IN-) | Inverting input of Amp A | Protected by 2.2kΩ series resistors and back-to-back diodes; input resistance >45MΩ below 1.8V differential. |
| 3 (IN+) | Noninverting input of Amp A | Matches IN- impedance for bias-current cancellation; common-mode range extends to VEE and VCC rails. |
| 4 (VEE) | Negative supply | Tie to GND for single-supply operation; internal substrate connected to VEE for latch-up immunity. |
| 5 (VEE) | Negative supply (redundant) | Second VEE pin improves power integrity and reduces ground bounce in dual-amplifier operation. |
| 6 (IN+) | Noninverting input of Amp B | Electrically isolated from Amp A inputs; enables independent dual-sensor conditioning on shared PCB. |
| 7 (IN-) | Inverting input of Amp B | Identical protection and bias characteristics as Pin 2; supports matched differential pair configurations. |
| 8 (OUTB) | Amplifier B output | Independent output stage; channel-to-channel isolation >80dB prevents cross-talk in simultaneous sampling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends from VEE to VCC - eliminates level-shifting circuitry when interfacing with 0–VCC sensors like potentiometers or resistive touch panels. |
| Ultra-low 10µA supply current per amp | Reduces total system standby power to <21µA for dual-channel monitoring - extends battery life in IoT edge nodes. |
| No phase reversal on overdriven inputs | Prevents erroneous saturation recovery in comparator-mode applications (e.g., zero-crossing detection in battery voltage monitors). |
| Unity-gain stable up to 200pF capacitive load | Allows direct connection to ADC input capacitors or long cables without external isolation resistors or compensation networks. |
| 200µV typical input offset voltage | Enables accurate DC amplification of microvolt-level signals from thermopiles or load cells without auto-zero circuitry. |
Applications
| Portable Medical Sensors | Industrial Strain Gauge Interfaces |
|---|---|
Use Scenario: Amplifying low-level mV outputs from wearable ECG electrodes powered by a single 3.0V coin cell. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation amplifier front-end with rail-to-rail output driving 12-bit SAR ADC. Use Value: 10µA per amplifier enables >2-year battery life; 200µV offset ensures <0.2% baseline error in 1mV ECG signals. | Use Scenario: Conditioning Wheatstone bridge outputs from load cells in battery-powered industrial scales. IC Role / Device Role / Timing Role: Precision dual-op-amp difference amplifier with matched gain paths for ratiometric bridge excitation. Use Value: Rail-to-rail I/O preserves full 0–3.3V ADC range; –80dB crosstalk prevents channel interference in multi-sensor weighing systems. |
| Handheld Test Equipment | Low-Power Data Loggers |
Use Scenario: Signal conditioning for multimeter inputs measuring 0–200mV DC with autoranging and battery backup. IC Role / Device Role / Timing Role: Dual op-amp used in programmable gain stage and reference buffer for ADC reference path. Use Value: 90kHz GBW supports fast settling (<50µs to 0.01%) for autoranging; 2.4V min supply allows operation down to depleted AA battery voltage. | Use Scenario: Analog front-end for environmental sensors (temperature/humidity) logging data every 10 seconds on a CR123A battery. IC Role / Device Role / Timing Role: Dual-channel sensor signal conditioner with one amp active during measurement burst, second held in standby. Use Value: Shutdown mode not available on MAX4042, but 10µA quiescent current enables >5-year operation; rail-to-rail input accepts 0–VDD sensor outputs directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher 22µA supply current; 6.4MHz GBW; SO-8 only; no µMAX option | Better AC performance but 2.2× higher power draw limits battery life in always-on nodes | Select when bandwidth >100kHz required and board space allows SO-8; avoid for sub-10µA ultra-low-power designs |
| OPA2333AIDR | Zero-drift architecture; 17µA supply current; 350kHz GBW; SO-8 only | Lower 0.02µV/°C drift vs. MAX4042's 2µV/°C - superior for high-precision DC measurements over temperature | Choose for <0.1µV offset drift requirements in lab-grade instruments; trade-off is 70% higher current and larger package |
Compared with TLV2462IDR and OPA2333AIDR, the MAX4042EUA-T provides the lowest quiescent current in a space-saving µMAX-8 package, making it optimal for size- and energy-constrained portable instrumentation where 90kHz bandwidth suffices.
Availability
The MAX4042EUA-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial strain gauge interfaces, handheld test equipment, and low-power data loggers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX4042EUA-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 demanding industrial, medical, and communications applications.
The MAX4042EUA-T belongs to the MAX4040–MAX4044 micropower rail-to-rail op amp family, engineered specifically for ultra-low-power, low-voltage signal conditioning in battery-operated portable electronics.
FAQ
What is the operating temperature range for the MAX4042EUA-T?
The MAX4042EUA-T is specified and guaranteed over the extended industrial temperature range of –40°C to +85°C. All electrical parameters - including input offset voltage (±3.5mV max), supply current (10µA typ), and gain-bandwidth product (90kHz) - are validated across this full range per Maxim's datasheet testing protocol.
Does the MAX4042EUA-T support shutdown mode?
No, the MAX4042EUA-T does not feature a shutdown mode. Only the MAX4041 and MAX4043 variants in the same family include a SHDN pin. The MAX4042EUA-T operates continuously with 10µA per amplifier supply current and no enable/disable control - simplifying design but requiring external power gating for ultra-deep sleep states.
What package type is used for the MAX4042EUA-T?
The MAX4042EUA-T uses the 8-pin µMAX package (3.05mm × 3.05mm × 0.8mm), a proprietary Maxim surface-mount outline identical in footprint to uSOP-8. It is not pin-compatible with SO-8 due to different lead pitch (0.5mm vs. 1.27mm) and requires µMAX-specific layout and reflow profiles.
Can the MAX4042EUA-T drive capacitive loads without oscillation?
Yes, the MAX4042EUA-T is unity-gain stable with capacitive loads up to 200pF, as confirmed in the datasheet's Load Resistor vs. Capacitive Load graph. For loads exceeding 200pF, an isolation resistor (e.g., 1kΩ) between output and capacitor restores stability but introduces gain error via voltage division with the load resistor.
What is the maximum load resistance the MAX4042EUA-T can drive while maintaining rail-to-rail swing?
The MAX4042EUA-T is fully guaranteed to drive a 25kΩ resistive load to within 60mV of the supply rails. With a 100kΩ load, output swing improves to within 10mV of rails - verified in Typical Operating Characteristics Figure 3. Heavier loads (e.g., 50kΩ) may be driven in specific conditions but are not production-tested or guaranteed across temperature and voltage extremes.
MAX4042EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.04V/µs
- Gain Bandwidth Product:
- 90 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 14µA (x2 Channels)
- Current - Output / Channel:
- 2.5 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4042EUA-T FAQ
1.How can I place an order for MAX4042EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4042EUA-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 MAX4042EUA-T reliable?
The price and inventory of MAX4042EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4042EUA-T is usually 5 days.
3.What payment methods are accepted for MAX4042EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4042EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4042EUA-T?
MAX4042EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4042EUA-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 MAX4042EUA-T?
For technical support, including MAX4042EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4042EUA-T requirements.
6.How does Aetrix verify that MAX4042EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX4042EUA-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 MAX4042EUA-T meets industry standards.
7.What is the process for return or replacement of MAX4042EUA-T?
All MAX4042EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4042EUA-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 MAX4042EUA-T part is unused and in its original packaging.
Return procedure for MAX4042EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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