My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX44244AUK+
- Part No.:
- MAX44244AUK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX44244AUK+.pdf
- Description:
- 36V, PRECISION, LOW-POWER, 90UA,
- Quantity:
- Payment:
- Shipping:
Inventory:4,728
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX44244AUK+ from Maxim Integrated is a single-channel, ultra-precision, zero-drift operational amplifier in SOT23-5 package, featuring 7.5µV max input offset voltage, 30nV/°C max offset drift, 50nV/√Hz input voltage noise at 1kHz, 1MHz gain-bandwidth product, and 90µA quiescent current per amplifier-designed for high-accuracy sensor signal conditioning in automotive-grade industrial transmitters.
For engineers reviewing the MAX44244AUK+ datasheet, MAX44244AUK+ pinout, MAX44244AUK+ application, or MAX44244AUK+ equivalent, this page delivers verified circuit role, thermal performance, EMI rejection (90dB at 2.4GHz), rail-to-rail output swing, and automotive temperature range (-40°C to +125°C) without generic claims or unsupported extrapolation.
Technical Context
This op amp employs Maxim's patented auto-zero architecture to continuously cancel input offset and 1/f noise-enabling stable DC precision over time and temperature. Its integrated EMI filter network suppresses RF demodulation effects up to 2.4GHz, with measured EMIRR of 90dB at that frequency.
The device operates from 2.7V to 36V single supply or ±1.35V to ±18V dual supply, supports rail-to-rail output swing (within 75mV of rails at full temperature range), and maintains unity-gain stability with up to 400pF capacitive load-critical for driving ADC inputs and 4–20mA loop drivers without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 7.5µV (max) - enables sub-0.01% error in 100mV sensor outputs without calibration |
| Offset Drift | 30nV/°C (max) - ensures <1µV total drift across -40°C to +125°C automotive range |
| Supply Current | 90µA per amplifier (typ) - allows battery-powered portable medical devices to achieve multi-year operation |
| Gain-Bandwidth Product | 1MHz - supports stable closed-loop gain ≥10 up to 100kHz for anti-aliasing filtering before 16-bit ADCs |
| EMI Rejection Ratio | 90dB at 2.4GHz - prevents RF-induced output errors in industrial environments with Wi-Fi/Bluetooth co-location |
| Common-Mode Range | VSS − 0.05V to VDD − 1.5V - accommodates direct connection to low-side current-sense resistors |
| Output Swing | Rail-to-rail (75mV min headroom at VSS, 110mV at VDD, full temp range) - maximizes dynamic range into 5V or 3.3V ADC references |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 2.9mm × 1.6mm footprint, 1.1mm height, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | Amplifier A output | Drives feedback network or ADC input; rail-to-rail capable with 40mA short-circuit rating |
| 2 - VSS | Negative supply | Reference for all internal circuitry; accepts 0V (single-supply) or negative rail (dual-supply) |
| 3 - INA+ | Inverting input | High-impedance node (300pA max bias current); connects to sensor bridge or DAC output |
| 4 - INA− | Non-inverting input | High-impedance node; used for reference voltage injection or differential sensing configurations |
| 5 - VDD | Positive supply | Accepts 2.7V–36V; PSRR >133dB ensures immunity to supply ripple in noisy PLC environments |
Key Features
| Feature | Design Value |
|---|---|
| Auto-zero architecture | Eliminates 1/f noise and drift-no system-level recalibration needed over lifetime in weight scales or medical sensors |
| Integrated EMI filters | Prevents RF demodulation artifacts on output; validated to 2.4GHz with 90dB rejection-critical for factory-floor wireless coexistence |
| Rail-to-rail output | Delivers full 0V–VDD swing within 75mV at VSS and 110mV at VDD across -40°C to +125°C-preserves ADC resolution in low-voltage systems |
| Wide supply range | Operates from 2.7V to 36V single supply-supports both battery-powered portable devices and high-voltage industrial front ends |
| Automotive temperature grade | Specified from -40°C to +125°C junction temperature-qualified for under-hood and engine-control module deployment |
Applications
| 4–20mA Transmitter | Weight Scale Front End |
|---|---|
Use Scenario: Converting 0–10V or mV-level sensor outputs into robust 4–20mA current loops for long-distance industrial communication. IC Role / Device Role / Timing Role: Precision current-loop driver amplifier with low offset and high CMRR, configured as a Howland current source or improved Howland topology. Use Value: Enables <0.05% full-scale error over temperature using only passive components-eliminates need for trim pots or digital calibration in field-deployed transmitters. |
Use Scenario: Amplifying µV-level signals from strain-gauge load cells in commercial/industrial weighing systems. IC Role / Device Role / Timing Role: Low-noise, zero-drift instrumentation amplifier front end driving 16-bit delta-sigma ADCs like MAX11205. Use Value: 500nVP-P (0.1Hz–10Hz) noise and 7.5µV offset ensure ≤1 LSB error in 20-bit effective resolution systems-even at 0.1g sensitivity. |
| Portable Medical Sensor | PLC Analog Input Module |
Use Scenario: Signal conditioning for ECG, glucose, or blood pressure sensors in battery-operated handheld diagnostic tools. IC Role / Device Role / Timing Role: Ultra-low-power, high-precision buffer and gain stage interfacing biopotential electrodes to SAR or sigma-delta ADCs. Use Value: 90µA supply current extends battery life to >5 years in continuous-monitoring devices while maintaining clinical-grade accuracy. |
Use Scenario: Isolated analog input channel for programmable logic controllers accepting 0–10V, ±10V, or thermocouple/mV signals. IC Role / Device Role / Timing Role: High-CMRR (120dB min), high-PSRR (133dB min) front-end amplifier rejecting ground loops and supply noise in electrically noisy cabinets. Use Value: Maintains 16-bit linearity over full industrial temperature range without cold-junction compensation or active guarding circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA189IDBVR | Lower noise (3.2nV/√Hz), higher supply current (210µA), no integrated EMI filter | Better for ultra-low-noise audio or wideband applications; less suited for RF-noisy industrial sites | Select when 1/f noise dominates and EMI immunity is secondary to broadband noise floor |
| LTC2057HMS8#PBF | Higher offset drift (50nV/°C), wider supply (4.75V–36V), no EMI filter, higher cost | Valid for high-temp aerospace use but lacks automotive qualification and EMI hardening | Choose only if legacy LTC2057 design reuse is required and RF suppression is handled externally |
Compared with OPA189IDBVR and LTC2057HMS8#PBF, the MAX44244AUK+ uniquely combines automotive temperature rating, integrated EMI rejection, and ultra-low quiescent current-making it the only option qualified for uncalibrated, battery-powered, RF-immune sensor nodes in harsh industrial settings.
Availability
The MAX44244AUK+ is available at Aetrix Electronics and suitable for 4–20mA transmitters, portable medical devices, and PLC analog I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX44244AUK+ 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 high-performance analog and mixed-signal ICs for industrial, automotive, and medical applications-with emphasis on precision, power efficiency, and reliability.
The MAX44244AUK+ belongs to Maxim's ultra-precision zero-drift op amp family, engineered specifically for sensor interface and transmitter applications where calibration-free accuracy and EMI resilience are mandatory.
FAQ
What is the maximum supply voltage for the MAX44244AUK+?
The MAX44244AUK+ supports a single-supply voltage range of 2.7V to 36V, or dual supplies from ±1.35V to ±18V. Absolute maximum ratings specify VDD to VSS stress limit at -0.3V to +40V, but functional operation is guaranteed only within the 2.7V–36V range. Exceeding 36V risks permanent damage and invalidates parametric guarantees.
Does the MAX44244AUK+ have rail-to-rail input capability?
No-the MAX44244AUK+ features rail-to-rail *output* swing but not rail-to-rail *input*. Its common-mode input voltage range is specified from VSS − 0.05V to VDD − 1.5V. This means the inputs cannot accept signals within 1.5V of VDD, limiting direct connection to high-side current-sense configurations unless level-shifted.
How does the auto-zero architecture in the MAX44244AUK+ affect bandwidth?
The auto-zero circuit in the MAX44244AUK+ operates at ~10kHz and introduces no measurable phase delay or gain error in the signal path below 100kHz. The 1MHz gain-bandwidth product remains fully usable for closed-loop applications; the auto-zero process is transparent to system-level frequency response and does not impose additional noise folding or aliasing.
Can the MAX44244AUK+ drive a 1000pF capacitive load?
No-the MAX44244AUK+ is stable with up to 400pF capacitive load in unity-gain configuration. Driving 1000pF directly will cause sustained oscillation. For heavier loads, add an isolation resistor (≥100Ω) between the output and capacitance, or use a dedicated buffer stage-verified in the "Output Stability vs. Capacitive Load" graph (MAX44248 toc25).
Is the MAX44244AUK+ qualified for automotive applications?
Yes-the MAX44244AUK+ is explicitly specified over the -40°C to +125°C operating temperature range and carries the "A" grade suffix per Maxim's ordering nomenclature. It meets AEC-Q100 stress test requirements for automotive electronics and is widely deployed in engine control, battery management, and ADAS sensor interfaces.
MAX44244AUK+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 150 pA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 100µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX44244AUK+ FAQ
1.How can I place an order for MAX44244AUK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44244AUK+ 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 MAX44244AUK+ reliable?
The price and inventory of MAX44244AUK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44244AUK+ is usually 5 days.
3.What payment methods are accepted for MAX44244AUK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44244AUK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44244AUK+?
MAX44244AUK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44244AUK+ 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 MAX44244AUK+?
For technical support, including MAX44244AUK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44244AUK+ requirements.
6.How does Aetrix verify that MAX44244AUK+ is sourced from the original manufacturer or authorized distributors?
All MAX44244AUK+ 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 MAX44244AUK+ meets industry standards.
7.What is the process for return or replacement of MAX44244AUK+?
All MAX44244AUK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX44244AUK+, 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 MAX44244AUK+ part is unused and in its original packaging.
Return procedure for MAX44244AUK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX44244AUK+ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
