My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4239AUT#G16
- Part No.:
- MAX4239AUT#G16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4239AUT#G16.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,357
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX4239AUT#G16 from Maxim Integrated is a decompensated, ultra-high-precision operational amplifier optimized for gain ≥10V/V applications. It delivers 6.5MHz gain-bandwidth product, 0.1µV typical input offset voltage, 10nV/°C drift, rail-to-rail output swing, and operates from a single 2.7V to 5.5V supply while consuming only 600µA. It is widely used in high-accuracy strain gauge signal conditioning and thermocouple front-ends where low 1/f noise and long-term stability are critical.
For engineers reviewing the MAX4239AUT#G16 datasheet, MAX4239AUT#G16 pinout, MAX4239AUT#G16 application, or MAX4239AUT#G16 equivalent, key selection criteria include minimum stable gain (10V/V), shutdown current (0.1µA), offset drift over automotive temperature range (−40°C to +125°C), and SOT23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4239AUT#G16 employs patented autocorrelating zeroing architecture to continuously measure and cancel input offset and 1/f noise-enabling near-zero DC error without chopper-induced intermodulation distortion. Its pseudorandom clock (10kHz–15kHz) minimizes spectral artifacts while maintaining fast overload recovery (3.3ms).
This decompensated amplifier requires closed-loop gain ≥10V/V for stability and supports maximum gains up to 6700V/V. Its ground-sensing inputs, rail-to-rail output (±100mV from rails at 1kΩ), and high PSRR/CMRR (140dB each) make it suitable for precision instrumentation interfacing directly to low-impedance sensors and high-resolution ADCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5MHz - enables stable operation at AV = 10V/V with usable bandwidth up to ~650kHz |
| Input Offset Voltage | 2.5µV max (−40°C to +85°C) - ensures ≤0.006% error in 14-bit systems without calibration |
| Offset Drift | 10nV/°C - contributes only 100nV drift over 10°C ambient change, critical for uncalibrated industrial sensors |
| Supply Current | 600µA typical - allows battery-powered instrumentation with >1-year runtime on coin cell |
| Shutdown Current | 0.1µA - reduces power by 6000×, enabling duty-cycled sensor acquisition |
| Output Swing | Rail-to-rail into 1kΩ - delivers full dynamic range to ADCs with 2.7V single supply |
| PSRR / CMRR | 140dB each - rejects supply ripple and common-mode interference in noisy industrial environments |
Pinout & Package
The MAX4239AUT#G16 is housed in a RoHS-compliant, lead-exempt 6-pin SOT23 package (pkg code U6FH-6), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. The exposed die pad is not present in this variant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output terminal; rail-to-rail capable into 1kΩ load |
| 2 | GND | Ground reference for all internal circuitry and bias networks |
| 3 | IN+ | Noninverting input; high-impedance CMOS node (IB = 1pA) |
| 4 | IN− | Inverting input; matched to IN+ for optimal CMRR and offset cancellation |
| 5 | SHDN | Active-low shutdown control; pulls output to high-Z when logic low |
| 6 | VCC | Positive supply input; accepts 2.7V to 5.5V with 140dB PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Autocorrelating Zeroing Architecture | Eliminates 1/f noise and thermal drift without chopper artifacts; enables true DC precision |
| Minimum Stable Gain | 10V/V - mandates external gain-setting network; prevents oscillation in high-speed configurations |
| Rail-to-Rail Output Stage | Swings within 100mV of VCC/GND into 1kΩ - maximizes ADC utilization with single-supply operation |
| Ultra-Low Input Bias Current | 1pA typical - avoids loading errors in high-impedance sensor interfaces (e.g., pH electrodes, piezoresistors) |
| Automotive Temperature Range | Specified from −40°C to +125°C - qualified for under-hood and industrial control applications |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from Type-K thermocouples across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with autozero correction to suppress thermal EMF drift. Use Value: 2.5µV max offset ensures <0.1°C measurement error without cold-junction compensation recalibration. |
Use Scenario: Buffering Wheatstone bridge outputs (e.g., 350Ω foil gauges) in load cells and pressure transducers. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier front-end driving 16-bit SAR ADCs. Use Value: 10nV/°C drift limits bridge offset drift to <1 LSB over 10°C ambient shift in 16-bit systems. |
| Electronic Scale Front-End | Medical Instrumentation Signal Chain |
|
Use Scenario: High-gain amplification (AV = 100–500) of microvolt-level bridge signals in digital kitchen and industrial scales. IC Role / Device Role / Timing Role: Primary gain block with integrated shutdown for power-gated weighing cycles. Use Value: 0.1µA shutdown current enables multi-year battery life in portable scale designs. |
Use Scenario: Amplifying low-amplitude bio-potential signals (ECG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: First-stage DC-coupled amplifier rejecting electrode half-cell potential drift. Use Value: 140dB CMRR and 1.5µVP-P (0.01Hz–10Hz) noise enable clean acquisition of sub-µV physiological signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4238AUT#G16 | Unity-gain stable; 1MHz GBWP; lower bandwidth but stable at AV = 1V/V | Better suited for unity-gain buffers and low-frequency (<100kHz) applications | Select when gain flexibility down to 1V/V is required and bandwidth demand is ≤100kHz |
| AD8628ARJZ-REEL7 | Chopper-stabilized; 2.5MHz GBWP; 1µV max offset; no minimum gain constraint | Compatible with AV = 1V/V; higher noise floor above 10Hz due to chopping | Prefer when unity-gain stability and wider bandwidth are needed, accepting higher mid-frequency noise |
Compared with MAX4238AUT#G16 and AD8628ARJZ-REEL7, the MAX4239AUT#G16 uniquely balances high-speed precision (6.5MHz GBWP) with ultra-low drift (10nV/°C) and strict minimum-gain stability-making it optimal for fixed-gain, high-resolution sensor interfaces where bandwidth and DC accuracy are both critical.
Availability
The MAX4239AUT#G16 is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge signal conditioning, electronic scale front-ends, medical instrumentation signal chains, and precision ADC buffering requiring stable component supply across extended temperature ranges.
Supply support for MAX4239AUT#G16 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, automotive, and medical applications.
The MAX4239AUT#G16 belongs to Maxim's ultra-precision autozero op-amp family, designed specifically for DC-critical sensor signal conditioning where offset, drift, and 1/f noise must be minimized without sacrificing bandwidth or supply efficiency.
FAQ
What is the minimum stable gain for the MAX4239AUT#G16?
The MAX4239AUT#G16 is decompensated and requires a minimum closed-loop gain of 10V/V for stable operation. This is confirmed in the Selector Guide and Electrical Characteristics tables. Gains below 10V/V risk phase margin degradation and potential oscillation. The MAX4239AUT#G16 achieves 6.5MHz GBWP only when operated at or above this gain threshold.
Does the MAX4239AUT#G16 support rail-to-rail input?
No, the MAX4239AUT#G16 does not support rail-to-rail input. Its common-mode input voltage range is specified as GND − 0.05V to VCC − 1.4V (over −40°C to +125°C), meaning it cannot accept signals at the negative rail or within ~1.4V of the positive rail. However, it does provide rail-to-rail output swing into 1kΩ loads.
What is the shutdown behavior of the MAX4239AUT#G16?
When SHDN is pulled low, the MAX4239AUT#G16 enters a 0.1µA shutdown state: the internal zeroing clock stops, amplifier bias is cut, and the output transitions to a high-impedance state. During shutdown, output leakage is ≤2µA (over temperature). Normal operation resumes within 4.3ms after SHDN returns high.
Is the MAX4239AUT#G16 RoHS compliant?
Yes, the MAX4239AUT#G16 is RoHS/lead-exempt per its # suffix, indicating compliance with EU RoHS Directive exemptions for lead in high-melting-temperature solder alloys. It uses a lead-exempt finish on its SOT23-6 package (pkg code U6FH-6) and is rated for operation from −40°C to +125°C.
How does the MAX4239AUT#G16 handle 1/f noise?
The MAX4239AUT#G16 eliminates 1/f noise via patented autocorrelating zeroing-sampling and subtracting low-frequency input errors in real time. This technique treats 1/f noise as a slow-varying offset, achieving 1.5µVP-P (0.01Hz–10Hz) noise and enabling true DC precision without chopper-induced intermodulation distortion.
MAX4239AUT#G16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 1.6V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 0.1 µV
- Current - Supply:
- 600µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX4239AUT#G16 FAQ
1.How can I place an order for MAX4239AUT#G16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4239AUT#G16 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 MAX4239AUT#G16 reliable?
The price and inventory of MAX4239AUT#G16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4239AUT#G16 is usually 5 days.
3.What payment methods are accepted for MAX4239AUT#G16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4239AUT#G16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4239AUT#G16?
MAX4239AUT#G16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4239AUT#G16 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 MAX4239AUT#G16?
For technical support, including MAX4239AUT#G16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4239AUT#G16 requirements.
6.How does Aetrix verify that MAX4239AUT#G16 is sourced from the original manufacturer or authorized distributors?
All MAX4239AUT#G16 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 MAX4239AUT#G16 meets industry standards.
7.What is the process for return or replacement of MAX4239AUT#G16?
All MAX4239AUT#G16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4239AUT#G16, 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 MAX4239AUT#G16 part is unused and in its original packaging.
Return procedure for MAX4239AUT#G16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4239AUT#G16 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…
