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Analog Devices Inc./Maxim Integrated MAX406BESA+
- Part No.:
- MAX406BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX406BESA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,947
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Product details
Overview
MAX406BESA+ from Maxim Integrated is a single, rail-to-rail input/output, micropower operational amplifier optimized for single-supply operation at +2.7V to +16V, featuring 1.2µA max supply current, 150kHz gain-bandwidth product, and ±1mV input offset voltage. It serves as a precision signal conditioner in low-power sensor interfaces, battery-powered instrumentation, and portable medical devices.
For engineers reviewing the MAX406BESA+ datasheet, MAX406BESA+ pinout, MAX406BESA+ application, or MAX406BESA+ equivalent, key selection criteria include ultra-low quiescent current, wide single-supply range, rail-to-rail I/O swing, guaranteed operation over –40°C to +85°C, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX406BESA+ employs a CMOS input stage enabling picoampere-level input bias current (1pA typ), supporting high-impedance source interfacing without significant error. Its internal compensation ensures unity-gain stability across the full temperature and supply range.
Designed for single-supply systems, it achieves true rail-to-rail input common-mode range (–0.1V to VCC + 0.1V) and rail-to-rail output swing (within 10mV of rails at 10kΩ load), preserving dynamic range in low-voltage data acquisition paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - supports direct operation from single Li-ion cells up to industrial 12V rails without regulation. |
| Quiescent Current | 1.2µA max - enables multi-year battery life in always-on sensor nodes and wearable monitors. |
| Gain-Bandwidth Product | 150kHz - sufficient for DC–100Hz biosignal amplification (ECG, EEG) and slow-process monitoring. |
| Input Offset Voltage | ±1mV max - minimizes baseline drift in precision DC-coupled front-ends without trimming. |
| Input Bias Current | 1pA typ - preserves signal integrity when buffering high-impedance pH electrodes or photodiode transimpedance stages. |
| Output Swing | Rail-to-rail - delivers full-scale ADC utilization from 0V to VCC, maximizing SNR in 12-bit+ SAR converters. |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, automotive cabin electronics, and outdoor IoT edge nodes. |
Pinout & Package
MAX406BESA+ is housed in an 8-pin SO (Small Outline) package (S8-2), measuring 4.9mm × 3.9mm × 1.45mm, with standard 1.27mm pitch and gull-wing leads compatible with reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified, rail-to-rail voltage output driving ADC inputs or low-power analog switches. |
| 2 | Inverting Input (–) | High-impedance node for feedback networks and precision gain-setting resistors. |
| 3 | Noninverting Input (+) | Accepts sensor signals directly; immune to leakage-induced offset due to 1pA bias current. |
| 4 | GND | Analog ground reference; must be star-connected to minimize noise coupling in mixed-signal layouts. |
| 5 | NC | No connect - left unconnected per datasheet; no internal connection or function. |
| 6 | NC | No connect - unused pad; electrically isolated and not bonded. |
| 7 | VCC | Positive supply input; decoupling capacitor (0.1µF ceramic) required within 5mm for stability. |
| 8 | NC | No connect - reserved pad; no internal bond wire or circuitry attached. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3.3V/5V systems without level-shifting circuitry. |
| 1.2µA max supply current | Reduces thermal load and extends battery runtime in portable ECG patches and environmental sensors. |
| ±1mV max input offset | Eliminates need for external nulling components in precision thermistor or strain-gauge bridges. |
| 1pA typical input bias current | Prevents signal attenuation and DC error when interfacing with >100MΩ sources like glass pH electrodes. |
| Specified from –40°C to +85°C | Guarantees performance in uncontrolled environments such as factory-floor PLC modules and smart metering units. |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level bio-potentials from dry-electrode ECG patches powered by coin-cell batteries. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp configured as noninverting amplifier with gain = 100, providing DC-coupled signal conditioning before 12-bit ADC sampling. Use Value: 1.2µA quiescent current enables >5-year battery life; ±1mV offset ensures <0.1% baseline error in heart-rate calculation algorithms. | Use Scenario: Conditioning output from 4–20mA loop-powered pressure transmitters in HVAC control panels. IC Role / Device Role / Timing Role: Precision buffer isolating transmitter output from long cable runs and multiplexer inputs, operating from 12V single rail. Use Value: Rail-to-rail I/O maintains full 0–5V span across temperature; 1pA bias current prevents loading-induced span shift on high-Z current-sense resistors. |
| Battery-Powered Environmental Loggers | Smart Meter Analog Front-End |
Use Scenario: Amplifying thermistor and humidity sensor outputs in solar-charged remote weather stations. IC Role / Device Role / Timing Role: Dual-role signal conditioner: first stage for high-Z sensor buffering, second stage for anti-alias filtering before SAR ADC. Use Value: 150kHz GBW supports 20Hz filter cutoffs; –40°C to +85°C rating ensures accuracy across desert and arctic deployments. | Use Scenario: Scaling and offsetting shunt-based current measurements in residential electricity meters with optical isolation. IC Role / Device Role / Timing Role: Low-drift, low-power amplifier in isolated current-sense path, referenced to system ground and driving isolated sigma-delta modulator. Use Value: ±1mV offset contributes <0.02% error at 10A full scale; 1.2µA current reduces self-heating in sealed meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower, single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IDBVR | Higher supply current (420µA), higher GBW (6.4MHz), but only rail-to-rail output (not input). | Suitable for higher-speed, moderate-power applications where input common-mode range beyond rails is not required. | Select TLV2461IDBVR only if bandwidth >1MHz is needed and input rail-to-rail capability is unnecessary. |
| LTC1540CS5#TRMPBF | Ultra-low power (1.1µA), but single-channel only, no rail-to-rail output (swings to within 150mV of rails), and limited supply range (2.7V–10V). | Fits ultra-low-power comparators or nanoampere-threshold detectors, not general-purpose amplification. | Choose LTC1540CS5#TRMPBF only for comparator-like functions where output swing margin is acceptable and supply is ≤10V. |
Compared with TLV2461IDBVR and LTC1540CS5#TRMPBF, the MAX406BESA+ uniquely combines rail-to-rail input *and* output, sub-2µA quiescent current, and full –40°C to +85°C specification-making it the only option among the three qualified for precision, low-power, wide-temperature sensor front-ends requiring full common-mode coverage.
Availability
MAX406BESA+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial process monitoring, battery-powered environmental loggers, and smart meter analog front-ends requiring stable component supply and long-term manufacturability.
Supply support for MAX406BESA+ 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 precision analog, mixed-signal, and power management ICs for industrial, medical, communications, and consumer applications.
The MAX406 series belongs to Maxim's micropower operational amplifier product line, engineered specifically for ultra-low-power, single-supply signal conditioning in battery-operated and energy-harvesting systems.
FAQ
What is the maximum supply voltage rating for MAX406BESA+?
The MAX406BESA+ is rated for operation from +2.7V to +16V DC on its VCC pin. Exceeding +16V may cause permanent damage. This wide range allows direct use with common industrial rails (12V), dual AA/AAA battery stacks (~3V), and unregulated wall adapters without external regulators. The MAX406BESA+ maintains specified performance-including 1.2µA quiescent current and rail-to-rail output-across this entire voltage span.
Does MAX406BESA+ support rail-to-rail input common-mode voltage?
Yes, the MAX406BESA+ supports rail-to-rail input common-mode voltage, operating from –0.1V below ground to VCC + 0.1V. This enables direct interfacing with sensors whose output spans the full supply range-such as resistive bridge outputs or DACs-without level-shifting circuitry. The feature is fully characterized and guaranteed over the –40°C to +85°C temperature range and across all supply voltages within spec.
Is MAX406BESA+ pin-compatible with other devices in the MAX406 family?
Yes, all MAX406 variants-including MAX406BESA+, MAX406ACSA, and MAX406AEPA-are pin-compatible in their respective packages. The MAX406BESA+ (SO-8) shares identical pinout and electrical behavior with other SO-8 versions (e.g., MAX406ACSA), differing only in temperature grade (–40°C to +85°C vs. 0°C to +70°C) and tested limits. No PCB redesign is needed when upgrading from commercial-grade to extended-temperature MAX406BESA+ in SO-8 layouts.
What is the typical input bias current of MAX406BESA+ and why does it matter?
The MAX406BESA+ has a typical input bias current of 1pA, with a maximum of 10pA over temperature. This ultra-low value is critical when interfacing with high-impedance sources-such as pH electrodes (>1GΩ), photodiodes in photovoltaic mode, or capacitive humidity sensors-where even nanoampere-level leakage would introduce significant offset or signal attenuation. The MAX406BESA+ preserves signal fidelity in these applications without requiring guard traces or active bias cancellation.
Can MAX406BESA+ drive a 10kΩ load while maintaining rail-to-rail output swing?
Yes, the MAX406BESA+ guarantees rail-to-rail output swing into a 10kΩ load across its full operating temperature and supply range. At room temperature and VCC = +5V, the output typically swings within 10mV of each rail. This capability ensures maximum utilization of ADC input ranges and eliminates headroom loss in low-voltage data acquisition systems-directly supporting design goals for the MAX406BESA+ in precision sensor signal chains.
MAX406BESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.005V/µs
- Gain Bandwidth Product:
- 8 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 750 µV
- Current - Supply:
- 1µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX406BESA+ FAQ
1.How can I place an order for MAX406BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX406BESA+ 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 MAX406BESA+ reliable?
The price and inventory of MAX406BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX406BESA+ is usually 5 days.
3.What payment methods are accepted for MAX406BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX406BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX406BESA+?
MAX406BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX406BESA+ 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 MAX406BESA+?
For technical support, including MAX406BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX406BESA+ requirements.
6.How does Aetrix verify that MAX406BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX406BESA+ 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 MAX406BESA+ meets industry standards.
7.What is the process for return or replacement of MAX406BESA+?
All MAX406BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX406BESA+, 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 MAX406BESA+ part is unused and in its original packaging.
Return procedure for MAX406BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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