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Analog Devices Inc./Maxim Integrated MAX44250AUA+T
- Part No.:
- MAX44250AUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX44250AUA+T.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,858
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Product details
Overview
The MAX44250AUA+T from Maxim Integrated is a single-channel, ultra-precision, low-noise operational amplifier featuring 6µV max input offset voltage, 19nV/°C max offset drift, and 5.9nV/√Hz input-referred voltage noise at 1kHz - designed for high-accuracy signal conditioning in precision sensor interfaces including strain gauges and medical instrumentation.
For engineers reviewing the MAX44250AUA+T datasheet, MAX44250AUA+T pinout, MAX44250AUA+T application, or MAX44250AUA+T equivalent, this page delivers verified specifications, package mapping to 8-pin µMAX®, functional pin roles, real-world use cases, and two validated alternative op amps with documented technical and application differences.
Technical Context
The MAX44250AUA+T employs patented auto-correlating zeroing architecture to continuously measure and cancel input offset and 1/f noise - enabling near-zero DC drift over temperature and time. Its rail-to-rail output stage supports full dynamic range utilization across 2.7V–20V single-supply operation.
It achieves unity-gain stability with a 10MHz gain-bandwidth product, 400ns settling time to 0.01%, and integrated EMI filtering to suppress RF interference - all while consuming only 1.22mA (typ) quiescent current per channel at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 6µV at +25°C - enables sub-LSB error in 18-bit ADC systems without calibration |
| Offset Drift (max) | 19nV/°C - limits drift-induced error to <200nV over 10°C ambient change |
| Voltage Noise Density | 5.9nV/√Hz at 1kHz - preserves SNR in low-level sensor signals like bridge transducers |
| 0.1Hz–10Hz Noise | 123nVP-P - critical for DC-coupled precision weighing and medical front-ends |
| Gain-Bandwidth Product | 10MHz - supports stable closed-loop gains up to ~1000× with adequate phase margin |
| Rail-to-Rail Output | Swings within 26mV of VSS and 40mV of VDD (RL = 10kΩ) - maximizes usable output swing |
| Supply Range | 2.7V to 20V single supply - accommodates industrial sensors requiring >12V excitation |
Pinout & Package
The MAX44250AUA+T is housed in an 8-pin µMAX® package (package code U8+1), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement. It is RoHS-compliant and rated for -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or grounded per layout best practice |
| 2 | VDD | Positive supply input - accepts 2.7V–20V; decoupling capacitor required at pin |
| 3 | OUT | Amplifier output - drives loads down to 2kΩ while maintaining rail-to-rail swing |
| 4 | N.C. | No internal connection - no routing or termination required |
| 5 | VSS | Negative supply (or ground in single-supply) - low-impedance return path essential |
| 6 | IN+ | Noninverting input - high-impedance node (2pF capacitance); sensitive to EMI pickup |
| 7 | IN− | Inverting input - matched to IN+ for common-mode rejection; used in feedback networks |
| 8 | N.C. | No internal connection - electrically isolated; may serve as thermal pad anchor |
Key Features
| Feature | Design Value |
|---|---|
| Autozeroing architecture | Eliminates 1/f noise and drift - delivers stable DC accuracy without manual nulling |
| Integrated EMI filter | Rejects RF interference at input pins - prevents corruption of µV-level sensor signals |
| Rail-to-rail output | Delivers >99% of supply rails at load - preserves headroom in low-voltage ADC buffer stages |
| Fast 400ns settling | Enables high-throughput sampling in precision data acquisition systems |
| Wide 2.7V–20V supply | Supports direct interface with high-voltage bridge sensors and legacy industrial supplies |
Applications
| Strain Gauge Interface | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying mV-level differential output from bonded foil strain gauges in load cells or torque sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with autozero correction and low 1/f noise. Use Value: Enables 18-bit resolution measurement with <0.01% linearity error over temperature without recalibration. |
Use Scenario: Signal conditioning for ECG, EEG, or patient monitoring front-ends requiring ultra-low DC drift. IC Role / Device Role / Timing Role: Low-noise, high-CMRR buffer between electrode interface and ADC. Use Value: Maintains baseline stability over multi-hour sessions by limiting offset drift to <200nV/°C. |
| Precision Weight Scale | Bridge Transducer Amplification |
Use Scenario: High-gain amplification of 20mV full-scale output from 10V-excited load cells in commercial scales. IC Role / Device Role / Timing Role: DC-stable gain stage preceding delta-sigma ADC (e.g., MAX11211). Use Value: Achieves <10ppm total error budget contribution from offset and drift over operating temperature range. |
Use Scenario: Conditioning output of pressure transducers with Wheatstone bridge topology. IC Role / Device Role / Timing Role: Low-drift, low-noise differential-to-single-ended converter. Use Value: Delivers 123nVP-P 0.1Hz–10Hz noise floor - sufficient for sub-0.05%FS pressure accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4522-1ARZ | Lower 5.8nV/√Hz noise but higher 12µV max offset; 5.5MHz GBW; SOIC-8 only | Better noise performance in AC-coupled systems; less suitable for DC-critical 0.1Hz–10Hz applications | Prefer when 0.1Hz–10Hz noise is secondary to broadband noise; avoid where <6µV offset is mandatory |
| LTC2057HMS8#PBF | Higher 3.5µV max offset, 0.5µV/°C drift; 2MHz GBW; 8-MSOP package | Superior drift spec but lower bandwidth - better for ultra-low-drift DC loops, not fast settling | Select for applications prioritizing long-term drift stability over speed or noise; verify 400ns settling not required |
Compared with ADA4522-1ARZ and LTC2057HMS8#PBF, the MAX44250AUA+T uniquely balances sub-6µV offset, 19nV/°C drift, 10MHz bandwidth, and 400ns settling - making it optimal for high-speed, high-DC-accuracy sensor interfaces where all three parameters are simultaneously constrained.
Availability
MAX44250AUA+T is available at Aetrix Electronics and suitable for precision instrumentation, medical device design, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX44250AUA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX44250AUA+T belongs to Maxim's ultra-precision op amp family, engineered specifically for DC-critical sensor signal chains where offset, drift, and low-frequency noise directly limit measurement fidelity.
FAQ
What is the maximum operating supply voltage for the MAX44250AUA+T?
The MAX44250AUA+T supports a supply voltage range of 2.7V to 20V on a single supply, or ±1.35V to ±10V on dual supplies. Absolute maximum rating is 22V between VDD and VSS. Exceeding this may cause permanent damage. The device maintains specified performance across its full 2.7V–20V operating range, including PSRR >140dB and stable 10MHz GBW.
Does the MAX44250AUA+T require external compensation for unity-gain stability?
No, the MAX44250AUA+T is internally compensated and unity-gain stable. It achieves 60° phase margin with 20pF capacitive load and remains stable driving up to 500pF. No external compensation components are needed - simplifying PCB layout and reducing bill-of-materials cost in precision buffer and gain-stage designs.
How does the autozeroing architecture in the MAX44250AUA+T affect its noise profile?
The MAX44250AUA+T uses auto-correlating zeroing to eliminate 1/f noise and DC offset drift. This results in flat 5.9nV/√Hz broadband noise and only 123nVP-P in the 0.1Hz–10Hz band - significantly lower than conventional CMOS op amps. The technique introduces no switching artifacts in the audio or measurement bands, preserving signal integrity.
Can the MAX44250AUA+T drive ADC inputs directly, and what is its typical settling time?
Yes, the MAX44250AUA+T is optimized as an ADC driver. It settles to 0.01% in 400ns with a 2V step and AV = –1V/V, supporting high-throughput sampling. Its low 6µV offset and 123nVP-P low-frequency noise prevent degradation of effective resolution in 18-bit delta-sigma converters like the MAX11211.
What is the thermal resistance (ΘJA) of the MAX44250AUA+T in its 8-pin µMAX® package?
The MAX44250AUA+T in the 8-pin µMAX® package has a junction-to-ambient thermal resistance (ΘJA) of 221°C/W, measured per JEDEC JESD51-7 on a four-layer board. With a max junction temperature of +150°C and ambient up to +125°C, its safe continuous power dissipation is ~362mW - well above its 12.2mW typical operating power (1.22mA × 10V).
MAX44250AUA+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:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 8V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 1.22mA
- Current - Output / Channel:
- 96 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 20 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX44250AUA+T FAQ
1.How can I place an order for MAX44250AUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44250AUA+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 MAX44250AUA+T reliable?
The price and inventory of MAX44250AUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44250AUA+T is usually 5 days.
3.What payment methods are accepted for MAX44250AUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44250AUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44250AUA+T?
MAX44250AUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44250AUA+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 MAX44250AUA+T?
For technical support, including MAX44250AUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44250AUA+T requirements.
6.How does Aetrix verify that MAX44250AUA+T is sourced from the original manufacturer or authorized distributors?
All MAX44250AUA+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 MAX44250AUA+T meets industry standards.
7.What is the process for return or replacement of MAX44250AUA+T?
All MAX44250AUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX44250AUA+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 MAX44250AUA+T part is unused and in its original packaging.
Return procedure for MAX44250AUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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