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Analog Devices Inc./Maxim Integrated MAX4131EBT+
- Part No.:
- MAX4131EBT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFBGA, CSPBGA
- Datasheet:
-
MAX4131EBT+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 6UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:284
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Product details
Overview
MAX4131EBT+ from Maxim Integrated is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage, precision signal conditioning. It delivers 10MHz gain-bandwidth, 200µV typical offset voltage, 900µA quiescent current per amplifier, and operates from +2.7V to +6.5V single supply. It features shutdown mode (25µA), drives 250Ω loads, and is unity-gain stable-ideal for battery-powered data-acquisition front-ends.
For engineers reviewing the MAX4131EBT+ datasheet, MAX4131EBT+ pinout, MAX4131EBT+ application, or MAX4131EBT+ equivalent, key selection criteria include rail-to-rail I/O swing at 2.7V, shutdown current <40µA over temperature, output drive capability into 250Ω, capacitive-load stability up to 160pF, and UCSP-6 package suitability for space-constrained portable designs.
Technical Context
The MAX4131EBT+ employs a dual-input-stage architecture (NPN/PNP) enabling rail-to-rail common-mode input range extending 200mV beyond VEE and VCC. Its output stage uses complementary push-pull circuitry to achieve millivolt-level output swing near both rails under load.
It integrates a dedicated SHDN pin that places the output in high-impedance state and reduces supply current to ≤40µA (–40°C to +85°C). The amplifier remains unity-gain stable with ≥160pF capacitive load and exhibits no phase reversal when inputs are overdriven.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 10MHz - enables stable closed-loop operation up to ~1MHz at AV = 10, suitable for anti-aliasing and sensor amplification. |
| Input Offset Voltage (max) | ±1.20mV (TA = +25°C) - ensures ≤1.2mV DC error in precision 12-bit ADC driver applications at room temperature. |
| Quiescent Current | 1.35mA max (TA = –40°C to +85°C, VCC = 5V) - supports >10-year battery life in always-on sensor nodes with µA-level sleep modes. |
| Shutdown Current | 70µA max (TA = –40°C to +85°C, VCC = 5V) - allows deep power-down without external switches or PCB layout changes. |
| Output Swing (RL = 250Ω) | VOL ≤ 190mV above VEE, VOH ≥ VCC – 350mV - delivers full 2.35Vpp output at 3V supply into standard 250Ω loads. |
| Capacitive Load Stability | Stable with ≤160pF - eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces. |
| Common-Mode Input Range | VEE – 0.20V to VCC – 0.20V - accepts signals from ground to within 200mV of VCC, critical for direct sensor interfacing. |
Pinout & Package
MAX4131EBT+ is housed in a 6-bump, 1mm × 1.5mm wafer-level chip-scale package (UCSP™) with bottom-side solder bumps. This ultra-compact, lead-free package supports fine-pitch PCB assembly and thermal performance comparable to SOT23.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B1) | IN+ | Noninverting input - accepts rail-to-rail common-mode signals; requires matched source impedance to IN– to minimize bias-current-induced offset. |
| 2 (B2) | IN– | Inverting input - forms feedback node; internal 1kΩ series resistors provide ±1.8V differential input protection. |
| 3 (A1) | OUT | Amplifier output - capable of sourcing/sinking >50mA short-circuit current; high-impedance during shutdown. |
| 4 (A2) | VEE | Negative supply - connect to GND for single-supply operation; defines lower bound of input/output voltage range. |
| 5 (A3) | VCC | Positive supply - accepts +2.7V to +6.5V; requires 0.1µF ceramic + ≥1µF bulk capacitor for stable operation. |
| 6 (B3) | SHDN | Shutdown control - logic-low (<0.8V) disables amplifier and forces output high-Z; floating or ≥2.0V enables operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output | Enables full dynamic range utilization in 3V systems - measures 0–3V sensor outputs and drives 0–3V ADC references without level-shifting. |
| Shutdown Mode | Reduces ICC to ≤70µA while maintaining high-impedance output - eliminates need for external analog switches in multiplexed sensor arrays. |
| Unity-Gain Stable | Operates reliably at AV = 1 without compensation - simplifies design of voltage followers for buffer/isolation in data-acquisition signal chains. |
| No Phase Reversal | Prevents output latch-up during input overdrive - ensures safe operation when interfacing with unclamped transducer outputs or ESD events. |
| 250Ω Load Drive | Delivers full swing into standard test/load impedances - avoids gain error or distortion in active filter stages and DAC output buffers. |
Applications
| Battery-Powered Instrumentation | Portable Medical Sensors |
|---|---|
Use Scenario: Low-power handheld multimeter measuring mV-level thermocouple outputs with 12-bit resolution. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner amplifying microvolt signals with minimal offset drift and rail-to-rail input range. Use Value: 200µV offset and 10MHz GBW enable accurate sub-mV measurement without AC coupling or chopper stabilization. |
Use Scenario: Wearable ECG front-end amplifying 1mV cardiac signals in a 3V coin-cell powered device. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with shutdown control synchronized to sampling intervals. Use Value: 25µA shutdown current extends battery life by >3× versus non-shutdown op amps during inter-sample idle periods. |
| Data-Acquisition System Front-End | Low-Voltage Industrial Sensor Interface |
Use Scenario: 16-channel industrial DAQ module digitizing 4–20mA loop sensors using single-supply 3.3V ADCs. IC Role / Device Role / Timing Role: Rail-to-rail output buffer isolating ADC input from multiplexer settling transients. Use Value: 160pF capacitive-load stability eliminates series resistor, preserving SNR and reducing component count per channel. |
Use Scenario: Smart pressure transmitter with integrated MEMS sensor operating from 3.6V Li-ion battery. IC Role / Device Role / Timing Role: Sensor excitation and output amplification stage requiring operation down to 1.8V minimum supply. Use Value: Guaranteed functionality at 2.7V and typical operation to 1.8V enables extended runtime as battery discharges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.02µV/°C offset drift vs. MAX4131EBT+'s ±2µV/°C; higher 350µA IQ; SO-5 package only. | Better DC accuracy for <10kHz precision DC apps; unsuitable for >100kHz signal conditioning due to 350kHz GBW. | Select OPA333AIDBVR only when sub-10µV total offset error over temperature is mandatory and bandwidth <350kHz suffices. |
| MCP6001UT-E/OT | 1MHz GBW; 100µA IQ; no shutdown; SOT23-5; ±1.5mV max VOS at +25°C; not specified for 160pF load stability. | Lower cost for general-purpose buffering where speed and capacitive drive are non-critical. | Choose MCP6001UT-E/OT for cost-sensitive, low-speed (<100kHz), non-shutdown applications where board space allows SOT23-5. |
Compared with OPA333AIDBVR and MCP6001UT-E/OT, the MAX4131EBT+ uniquely balances 10MHz bandwidth, rail-to-rail I/O, 25µA shutdown, and 160pF capacitive-load stability in a 1mm × 1.5mm UCSP-making it optimal for compact, battery-powered, wideband sensor interfaces requiring dynamic range and power efficiency.
Availability
MAX4131EBT+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and data-acquisition system front-ends requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for MAX4131EBT+ 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 communications markets.
The MAX4130–MAX4134 family was designed specifically for low-voltage, single-supply precision signal conditioning-emphasizing rail-to-rail I/O, low quiescent current, and robust capacitive-load drive in miniature packages.
FAQ
What is the maximum operating supply voltage for MAX4131EBT+?
The MAX4131EBT+ supports a maximum supply voltage of 7.5V absolute rating, but its specified operating range is +2.7V to +6.5V for reliable DC and AC performance. Operation above +6.5V risks exceeding internal junction limits and invalidates parametric guarantees. Always maintain VCC ≤ +6.5V in production designs using MAX4131EBT+.
Does MAX4131EBT+ require external compensation for unity-gain stability?
No, the MAX4131EBT+ is internally compensated and unity-gain stable across its full operating range. It maintains ≥62° phase margin with no external components required, even when driving up to 160pF capacitive loads. This eliminates compensation networks and simplifies layout for MAX4131EBT+ voltage-follower or gain-of-one configurations.
What is the guaranteed input offset voltage specification for MAX4131EBT+ over temperature?
The MAX4131EBT+ has a guaranteed maximum input offset voltage of ±4.40mV over the full industrial temperature range (–40°C to +85°C), as specified in the datasheet's DC electrical characteristics table. This value includes initial offset plus drift contribution, ensuring predictable DC error in precision MAX4131EBT+ signal paths without trimming.
Can MAX4131EBT+ drive a 250Ω load while maintaining rail-to-rail output swing?
Yes, the MAX4131EBT+ is explicitly characterized to drive 250Ω loads with rail-to-rail output swing: at VCC = 3V, it delivers VOL ≤ 190mV above VEE and VOH ≥ VCC – 350mV. This meets the "rail-to-rail" claim under real load conditions, unlike many op amps that specify swing only into high-impedance loads. MAX4131EBT+ achieves this with its robust output stage.
Is the UCSP-6 package of MAX4131EBT+ compatible with standard reflow profiles?
Yes, the MAX4131EBT+ UCSP-6 package is qualified for standard Pb-free reflow per JEDEC J-STD-020, with peak reflow temperature up to +235°C. Maxim specifies bump reflow profile guidelines in Application Note UCSP–A Wafer-Level Chip-Scale Package; adherence ensures void-free solder joints and mechanical reliability for MAX4131EBT+ assembly.
MAX4131EBT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, CSPBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 350 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UCSP (1.57x1.05)
MAX4131EBT+ FAQ
1.How can I place an order for MAX4131EBT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4131EBT+ 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 MAX4131EBT+ reliable?
The price and inventory of MAX4131EBT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4131EBT+ is usually 5 days.
3.What payment methods are accepted for MAX4131EBT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4131EBT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4131EBT+?
MAX4131EBT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4131EBT+ 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 MAX4131EBT+?
For technical support, including MAX4131EBT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4131EBT+ requirements.
6.How does Aetrix verify that MAX4131EBT+ is sourced from the original manufacturer or authorized distributors?
All MAX4131EBT+ 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 MAX4131EBT+ meets industry standards.
7.What is the process for return or replacement of MAX4131EBT+?
All MAX4131EBT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4131EBT+, 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 MAX4131EBT+ part is unused and in its original packaging.
Return procedure for MAX4131EBT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4131EBT+ Tags
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LM358DT
STMicroelectronics
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MCP6006T-E/OT
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MCP6006UT-E/OT
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