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Analog Devices Inc./Maxim Integrated MAX406BCPA
- Part No.:
- MAX406BCPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX406BCPA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,852
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Product details
Overview
MAX406BCPA from Maxim Integrated is a single, precision, micropower operational amplifier optimized for single-supply operation at 2.7V to 16V, featuring 1.2µA max supply current, 150µV max input offset voltage, and rail-to-rail output swing - used in battery-powered sensor signal conditioning and low-power analog front-ends.
For engineers reviewing the MAX406BCPA datasheet, MAX406BCPA pinout, MAX406BCPA application, or MAX406BCPA equivalent, key selection criteria include ultra-low quiescent current, guaranteed input offset voltage over temperature, rail-to-rail output drive capability, and compatibility with 8-pin plastic DIP footprint in space-constrained industrial monitoring systems.
Technical Context
The MAX406BCPA implements a CMOS input stage with p-channel differential pair architecture, enabling nanopower operation while maintaining DC precision. It delivers 150µV max VOS at +25°C and 300µV max over 0°C to +70°C, with 0.1pA max input bias current and 120dB min open-loop gain.
This op amp operates from a single 2.7V–16V supply and achieves rail-to-rail output swing within 10mV of each rail at 10kΩ load. Its unity-gain stable design supports direct use in unity-gain buffer, active filter, and precision comparator hysteresis configurations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 16V single supply - enables direct interface with Li-ion batteries and industrial 12V rails without level-shifting. |
| Quiescent Current | 1.2µA max - allows continuous operation for years on coin-cell batteries in remote sensor nodes. |
| Input Offset Voltage | 150µV max at +25°C, 300µV max over 0°C to +70°C - ensures sub-millivolt accuracy in high-resolution thermistor or strain gauge amplification. |
| Input Bias Current | 0.1pA max - eliminates significant error in high-impedance photodiode or pH electrode interfaces. |
| Output Swing | Rail-to-rail, within 10mV of VCC and GND at 10kΩ - maximizes dynamic range in ADC driver applications with 12-bit+ resolution. |
| Open-Loop Gain | 120dB min - supports precise closed-loop gain accuracy (e.g., 0.01% error at gain = 100) in instrumentation amplifier stages. |
| Unity-Gain Bandwidth | 1kHz - suitable for DC-coupled sensor signal conditioning and slow-varying process control loops. |
Pinout & Package
MAX406BCPA is housed in an 8-pin plastic DIP (dual in-line package), 0.3-inch body width, with standard through-hole mounting and JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified, rail-to-rail output signal; drives loads down to 10kΩ with full swing. |
| 2 | Inverting Input (–) | Differential input node; accepts feedback network for configured gain or filtering. |
| 3 | Noninverting Input (+) | High-impedance input node; connects directly to sensor or reference voltage source. |
| 4 | GND | Analog ground reference; must be tied to system common ground with low-impedance path. |
| 5 | N/C | No internal connection; left unconnected per datasheet; not used for thermal or shielding purposes. |
| 6 | N/C | No internal connection; electrically isolated; no routing or grounding required. |
| 7 | VCC | Positive supply input; accepts 2.7V–16V single supply; bypass capacitor recommended. |
| 8 | N/C | No internal connection; unused pin; no electrical or mechanical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.2µA max enables multi-year operation from CR2032 coin cells in wireless sensor transmitters. |
| Guaranteed input offset voltage | 300µV max over 0°C to +70°C eliminates need for manual trimming in production calibration. |
| Rail-to-rail output | Swings within 10mV of both rails at 10kΩ load, preserving >99% of available ADC input range. |
| CMOS input stage | 0.1pA max input bias current prevents loading errors in megohm-range sensor bridges and capacitive transducers. |
| Single-supply operation | Operates from 2.7V to 16V with no dual-rail requirement - simplifies power architecture in portable medical devices. |
Applications
| Portable Gas Sensors | Industrial Temperature Monitoring |
|---|---|
Use Scenario: Amplifying low-level signals from electrochemical gas sensors in handheld air quality meters powered by AA batteries. IC Role / Device Role / Timing Role: Precision DC amplifier with rail-to-rail output driving 12-bit SAR ADC input. Use Value: 1.2µA quiescent current extends battery life beyond 2 years; 150µV VOS ensures ±0.5% full-scale measurement accuracy. | Use Scenario: Conditioning output from Pt100 RTD bridges in DIN-rail mounted temperature transmitters operating from 12V DC supply. IC Role / Device Role / Timing Role: Low-drift, single-supply instrumentation amplifier front-end stage with fixed gain of 100. Use Value: 300µV max VOS over 0°C to +70°C avoids recalibration across ambient operating range. |
| Battery-Powered ECG Front-End | Low-Power Data Logger Analog Stage |
Use Scenario: Amplifying microvolt-level biopotential signals in disposable wearable ECG patches using coin-cell power. IC Role / Device Role / Timing Role: Ultra-low-noise, zero-drift-capable buffer stage preceding high-resolution sigma-delta ADC. Use Value: 0.1pA input bias current prevents electrode polarization drift; rail-to-rail output matches ADC reference span. | Use Scenario: Signal conditioning for thermistor and humidity sensor outputs in solar-powered environmental data loggers. IC Role / Device Role / Timing Role: Single-supply, micropower transducer amplifier feeding multiplexed ADC inputs. Use Value: 2.7V minimum supply allows direct operation from partially discharged LiFePO₄ cells; N/C pins simplify PCB layout. |
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 |
|---|---|---|---|
| LMV321IDBVR | Higher 65µA IQ, 3.5mV VOS max, same 8-pin SOT-23 package - not pin-compatible with MAX406BCPA's DIP. | Targeted at higher-speed, lower-precision consumer applications; lacks guaranteed VOS over temperature. | Select when board space is critical and µA-level current is not required. |
| OPA340UA | 25µA IQ, 125µV VOS max, rail-to-rail input/output - requires SO-8 footprint, not DIP. | Optimized for audio and general-purpose signal chain; wider bandwidth (1MHz) but higher power. | Choose for improved AC performance where supply current budget allows ≥20µA. |
Compared with LMV321IDBVR and OPA340UA, the MAX406BCPA uniquely delivers sub-µA quiescent current with guaranteed low offset in an industry-standard 8-pin plastic DIP, making it irreplaceable for legacy through-hole designs requiring multi-year battery life and DC precision.
Availability
MAX406BCPA is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and battery-powered environmental monitors requiring stable component supply and long-term obsolescence management.
Supply support for MAX406BCPA 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, and communications applications.
The MAX406 series belongs to Maxim's micropower precision op amp product line, engineered specifically for ultra-low-power, single-supply sensor signal conditioning in space- and energy-constrained systems.
FAQ
What is the maximum input offset voltage specification for MAX406BCPA over its full operating temperature range?
The MAX406BCPA guarantees a maximum input offset voltage of 300µV over the 0°C to +70°C temperature range. This value is tested and specified per the MAX406 family datasheet Rev 4 (April 2009), and applies specifically to the 'B' grade version. The 'A' grade offers tighter 150µV max at +25°C but not over full temperature range. MAX406BCPA maintains this spec without external trimming.
Does MAX406BCPA support rail-to-rail input operation?
No, MAX406BCPA does not support rail-to-rail input operation. Its input common-mode range extends from 0V to VCC – 1.2V, meaning it cannot accept signals within 1.2V of the positive rail. However, it does provide rail-to-rail output swing within 10mV of both supply rails under 10kΩ load - a key distinction confirmed in the MAX406/MAX407/MAX409 datasheet Section "Electrical Characteristics".
What package type and pin count does MAX406BCPA use?
MAX406BCPA uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width, per package code P8-1 and JEDEC MS-001 standard. This through-hole package has pins 1–8 arranged in two parallel rows, and is distinct from the SO-8 (S8-2) and CERDIP (J8-2) variants listed for other grades of the MAX406 family.
Can MAX406BCPA operate from a 2.5V supply?
No, MAX406BCPA requires a minimum supply voltage of 2.7V as specified in the Absolute Maximum Ratings and DC Electrical Characteristics tables. Operation below 2.7V is not guaranteed and may result in degraded output swing, increased offset, or failure to meet 1.2µA IQ specification. For 2.5V operation, consider alternative micropower op amps explicitly rated down to that voltage.
Is MAX406BCPA pin-compatible with other members of the MAX406 family such as MAX406ACPA?
Yes, MAX406BCPA is fully pin-compatible with MAX406ACPA, MAX406AEPA, and all other MAX406 variants in the same 8-pin plastic DIP package (P8-1). Differences between grades relate only to temperature range and electrical grading (e.g., offset voltage limits), not pinout or internal connectivity. All share identical pin functions and mechanical footprint.
MAX406BCPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 600 µA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX406BCPA FAQ
1.How can I place an order for MAX406BCPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX406BCPA 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 MAX406BCPA reliable?
The price and inventory of MAX406BCPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX406BCPA is usually 5 days.
3.What payment methods are accepted for MAX406BCPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX406BCPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX406BCPA?
MAX406BCPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX406BCPA 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 MAX406BCPA?
For technical support, including MAX406BCPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX406BCPA requirements.
6.How does Aetrix verify that MAX406BCPA is sourced from the original manufacturer or authorized distributors?
All MAX406BCPA 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 MAX406BCPA meets industry standards.
7.What is the process for return or replacement of MAX406BCPA?
All MAX406BCPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX406BCPA, 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 MAX406BCPA part is unused and in its original packaging.
Return procedure for MAX406BCPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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