My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4249EUB+T
- Part No.:
- MAX4249EUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4249EUB+T.pdf
- Description:
- IC OPAMP GP 2 CIRC 10UMAX/USOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4249EUB+T from Analog Devices is a dual, low-noise, low-distortion, rail-to-rail output operational amplifier optimized for single-supply operation from 2.4V to 5.5V. It delivers 0.0002% THD+N at 1kHz, 7.9nV/√Hz input voltage-noise density at 30kHz, and 400μA quiescent current per amplifier - making it ideal for high-fidelity portable instrumentation and precision ADC buffering.
For engineers reviewing the MAX4249EUB+T datasheet, MAX4249EUB+T pinout, MAX4249EUB+T application, or MAX4249EUB+T equivalent, this device is selected for ultra-low-noise signal conditioning in battery-powered medical sensors, wireless PA control loops, and 16-bit data acquisition systems where distortion floor and power efficiency are critical.
Technical Context
The MAX4249EUB+T belongs to the decompensated op amp subgroup (AV ≥ 10V/V stable) with 22MHz gain-bandwidth product and 2.1V/µs slew rate. Its input stage features FET-based topology enabling 1pA bias current and ground-sensing common-mode range (down to VSS − 0.2V), while the push-pull output drives 1kΩ loads within 8mV of rails.
It integrates dual independent amplifiers in a 10-pin µMAX package with shared VDD/VSS and individual IN+/IN−/OUT pins per channel. Shutdown control (SHDNA/SHDNB) reduces supply current to 0.5μA and places outputs in high-impedance state - confirmed for MAX4249/MAX4251/MAX4253/MAX4256 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 22MHz - supports stable closed-loop gain ≥10V/V with sufficient loop gain for low-distortion 100kHz signal paths |
| THD+N @ 1kHz, RL=1kΩ | 0.0002% - enables clean amplification of audio and sensor signals without harmonic contamination in 16-bit ADC front-ends |
| Input Voltage-Noise Density | 7.9nV/√Hz @ 30kHz - ensures minimal added noise when conditioning low-level transducer outputs (e.g., strain gauges) |
| Quiescent Current per Amp | 400μA - allows dual-channel operation under 1mA total supply current, critical for coin-cell or Li-ion portable designs |
| Rail-to-Rail Output Swing | Within 8mV of VDD/VSS @ 10kΩ - maximizes dynamic range in 3.3V or 2.4V systems, preserving >99.5% of supply headroom |
| Input Common-Mode Range | VSS − 0.2V to VDD − 1.1V - supports direct interfacing to ground-referenced sensors without level-shifting circuitry |
| Capacitive Load Drive | 400pF - eliminates need for isolation resistors in typical PCB trace + filter capacitor configurations |
Pinout & Package
MAX4249EUB+T is housed in a 10-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed paddle. Pin numbering follows standard µMAX top-view convention with pin 1 marked by dot.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Output of amplifier A - rail-to-rail capable, high-impedance during shutdown |
| 2 | IN−A | Inverting input of amplifier A - 11pF input capacitance requires feed-forward compensation above 5kΩ source impedance |
| 3 | IN+A | Noninverting input of amplifier A - accepts common-mode voltages down to VSS − 0.2V |
| 4 | VSS | Negative supply / ground reference - must be low-impedance for optimal PSRR and noise rejection |
| 5 | SHDNA | Shutdown control for amplifier A - logic low (≤0.2×VDD) disables amp A and forces OUTA high-Z |
| 6 | VDD | Positive supply - bypass with 0.1μF ceramic capacitor placed <1mm from pin for stability |
| 7 | SHDNB | Shutdown control for amplifier B - independent of SHDNA; both required low for full dual-channel disable |
| 8 | IN+B | Noninverting input of amplifier B - electrically identical to IN+A; supports differential or independent channels |
| 9 | IN−B | Inverting input of amplifier B - matched to IN−A; enables dual-channel feedback networks with <1mV offset mismatch |
| 10 | OUTB | Output of amplifier B - fully independent of OUTA; no crosstalk degradation up to 1MHz per channel |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low THD+N | 0.0002% at 1kHz enables use in 16-bit ADC buffers without degrading effective resolution |
| Dual independent shutdown | Separate SHDNA/SHDNB pins allow selective channel disable - reduces system power by 50% when only one amp is active |
| Ground-sensing input | Common-mode range includes VSS − 0.2V - eliminates need for negative supply or level shifters with single-ended sensors |
| 400pF capacitive load stability | No external isolation resistor needed for typical PCB traces + anti-aliasing filters - simplifies layout and saves BOM cost |
| Low input bias current | 1pA max at +25°C - prevents significant voltage error across high-impedance sources (>100MΩ) like piezoelectric transducers |
| High DC accuracy | 70μV max input offset voltage and 116dB large-signal voltage gain ensure precision gain-setting in closed-loop configurations |
Applications
| Portable ECG Monitor Front-End | Wireless Baseband I/Q Channel Buffer |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-powered wearable ECG units. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier driver with rail-to-rail output swing and ultra-low noise floor. Use Value: 7.9nV/√Hz input noise and 0.0002% THD+N preserve signal integrity for accurate R-wave detection and HRV analysis without oversampling. |
Use Scenario: Buffering I and Q baseband signals prior to DAC in compact 2.4GHz ISM-band transceivers. IC Role / Device Role / Timing Role: Dual low-distortion voltage follower providing gain-of-1 buffering with matched channel timing. Use Value: 22MHz GBW and 2.1V/µs slew rate support clean 20MHz baseband bandwidth; dual shutdown enables TDD mode power gating. |
| Industrial Strain Gauge Signal Chain | Handheld Digital Multimeter Input Stage |
|
Use Scenario: Conditioning mV-level Wheatstone bridge outputs in portable load cell calibrators. IC Role / Device Role / Timing Role: Precision noninverting amplifier with programmable gain and low-offset DC performance. Use Value: 70μV VOS and 0.3μV/°C tempco minimize zero-drift errors; rail-to-rail output maximizes 3.3V ADC utilization. |
Use Scenario: High-impedance buffer for 10MΩ input resistance and auto-ranging voltage measurement circuits. IC Role / Device Role / Timing Role: Unity-gain stable buffer isolating DMM input from internal ADC sampling switch. Use Value: 1pA input bias current prevents loading of high-Z divider networks; 400μA per amp extends battery life beyond 200 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-distortion op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4256ESA+ | Same dual-channel architecture, 22MHz GBW, but in 8-pin SO package; no SHDN pins - always enabled | Lacks independent shutdown; unsuitable for duty-cycled multi-channel systems requiring dynamic power management | Select MAX4256ESA+ only if board space permits SO-8 and shutdown functionality is unnecessary |
| OPA2189IDR | Single-supply, zero-drift, 1.2MHz GBW, 5.2nV/√Hz noise, no shutdown - TI's precision alternative with lower VOS (±1μV) | Lower bandwidth and no shutdown limit use in wideband or power-gated applications; superior DC accuracy for static measurements | Choose OPA2189IDR for ultra-stable DC gain stages where 22MHz bandwidth is excessive and sub-μV offset is mandatory |
Compared with MAX4256ESA+, the MAX4249EUB+T offers independent channel shutdown and smaller µMAX footprint; versus OPA2189IDR, it trades zero-drift DC stability for higher speed, lower noise at 30kHz, and active power control - making it optimal for portable wideband sensing.
Availability
MAX4249EUB+T is available at Aetrix Electronics and suitable for portable medical instrumentation, wireless communications infrastructure, and industrial handheld test equipment requiring stable component supply and long-term production continuity.
Supply support for MAX4249EUB+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.
The MAX4249–MAX4257 family was engineered specifically for ultra-low-noise, low-distortion signal conditioning in single-supply, battery-constrained systems - emphasizing rail-to-rail operation, sub-1pA bias current, and integrated shutdown without sacrificing AC performance.
FAQ
What is the maximum capacitive load the MAX4249EUB+T can drive without external compensation?
The MAX4249EUB+T is specified to drive up to 400pF capacitive loads while maintaining stability and avoiding sustained oscillations - verified across temperature and supply voltage ranges. This eliminates the need for series isolation resistors in typical PCB layouts with short traces and standard RC anti-aliasing filters. For loads exceeding 400pF, a small isolation resistor (e.g., 150Ω for 1000pF) between output and load restores phase margin. The MAX4249EUB+T datasheet Figure 6 provides exact RISO vs. CL guidance.
Does the MAX4249EUB+T support true rail-to-rail input common-mode voltage range?
The MAX4249EUB+T does not support rail-to-rail input - its input common-mode voltage range extends from VSS − 0.2V to VDD − 1.1V, which includes ground but excludes the positive rail. This "ground-sensing" capability enables direct interface with single-ended sensors referenced to system ground, yet requires input signals to stay ≥1.1V below VDD. The output, however, swings within 8mV of both rails under 10kΩ load, delivering true rail-to-rail output performance for the MAX4249EUB+T.
Can both amplifiers in the MAX4249EUB+T be shut down independently?
Yes - the MAX4249EUB+T features two dedicated shutdown pins: SHDNA (pin 5) controls amplifier A, and SHDNB (pin 7) controls amplifier B. Driving either pin low (≤0.2×VDD) reduces that amplifier's supply current to 0.5μA and places its output in high-impedance state, while the other channel remains fully operational. This independent control enables flexible power management in dual-channel systems such as stereo audio paths or I/Q signal chains where one channel may be idle.
What is the typical input offset voltage and its drift over temperature for the MAX4249EUB+T?
The MAX4249EUB+T has a maximum input offset voltage (VOS) of ±0.75mV over the −40°C to +85°C operating range, with a typical value of ±70μV at +25°C. Its offset voltage temperature coefficient (TCVOS) is guaranteed at 0.3μV/°C maximum - meaning over a 100°C span, drift contributes less than 30μV additional error. This low drift ensures stable DC gain accuracy in precision sensor interfaces and portable multimeters where thermal gradients are unavoidable.
Is the MAX4249EUB+T unity-gain stable, or does it require minimum gain for stability?
The MAX4249EUB+T is internally compensated for gains of 10V/V or greater and is not unity-gain stable. Attempting unity-gain configuration will result in instability and potential oscillation due to insufficient phase margin. For unity-gain applications, Analog Devices recommends the MAX4250–MAX4254 family (e.g., MAX4250EUK+T), which features 3MHz GBW and unity-gain stability. The MAX4249EUB+T's 22MHz GBW and 2.1V/µs slew rate are optimized for higher-gain, wideband signal conditioning where distortion and speed are prioritized over minimum gain flexibility.
MAX4249EUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 2.1V/µs
- Gain Bandwidth Product:
- 22 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 420µA (x2 Channels)
- Current - Output / Channel:
- 68 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:
- 10-uMAX/uSOP
MAX4249EUB+T FAQ
1.How can I place an order for MAX4249EUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4249EUB+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 MAX4249EUB+T reliable?
The price and inventory of MAX4249EUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4249EUB+T is usually 5 days.
3.What payment methods are accepted for MAX4249EUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4249EUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4249EUB+T?
MAX4249EUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4249EUB+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 MAX4249EUB+T?
For technical support, including MAX4249EUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4249EUB+T requirements.
6.How does Aetrix verify that MAX4249EUB+T is sourced from the original manufacturer or authorized distributors?
All MAX4249EUB+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 MAX4249EUB+T meets industry standards.
7.What is the process for return or replacement of MAX4249EUB+T?
All MAX4249EUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4249EUB+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 MAX4249EUB+T part is unused and in its original packaging.
Return procedure for MAX4249EUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4249EUB+T 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…
