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Analog Devices Inc./Maxim Integrated MAX407CSA+
- Part No.:
- MAX407CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX407CSA+.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
MAX407CSA+ from Maxim Integrated is a dual, rail-to-rail input/output, micropower operational amplifier optimized for single-supply operation at +2.7V to +6V. It delivers 1.2µA max supply current per amplifier, 150kHz gain-bandwidth product, and 60mV max input offset voltage across 0°C to +70°C. It is used in battery-powered sensor signal conditioning and low-power data acquisition front-ends.
For engineers reviewing the MAX407CSA+ datasheet, MAX407CSA+ pinout, MAX407CSA+ application, or MAX407CSA+ equivalent, key selection criteria include micropower consumption, rail-to-rail I/O swing, input offset voltage stability over temperature, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX407CSA+ integrates two independent op-amps on a single die with matched internal transistor pairs enabling low input offset drift (0.5µV/°C typical) and high CMRR (80dB min). Its input stage uses p-channel JFETs for ultra-low input bias current (1pA typical), supporting high-impedance source interfacing.
It operates from a single 2.7V–6V supply with full rail-to-rail output swing and >90% rail-to-rail input common-mode range. The amplifier features unity-gain stable compensation and no phase reversal under overdrive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6V - Enables direct use with single Li-ion, two-AA, or regulated 3.3V/5V rails without level-shifting. |
| Quiescent Current | 1.2µA per amplifier - Supports multi-year battery life in always-on sensor nodes and portable medical devices. |
| Gain-Bandwidth Product | 150kHz - Sufficient for DC–100Hz sensor amplification (e.g., thermocouples, strain gauges) with stable closed-loop gain. |
| Input Offset Voltage | 60mV max - Allows direct DC-coupled amplification of mV-level signals without external trimming in cost-sensitive designs. |
| Input Bias Current | 1pA typical - Permits use with >100MΩ source impedances without significant error voltage buildup. |
| Output Swing | Rail-to-rail - Maximizes dynamic range into ADCs or low-voltage logic interfaces without external level-shifting circuitry. |
| Operating Temperature | 0°C to +70°C - Qualified for commercial-grade embedded systems including industrial HMI and consumer IoT endpoints. |
Pinout & Package
MAX407CSA+ is housed in an 8-pin SO (Small Outline) package (S8-2), measuring 4.9mm × 3.9mm × 1.75mm, with standard 1.27mm pitch and gull-wing leads compatible with reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal reference for first op-amp channel. |
| 2 | Noninverting Input (Amplifier A) | High-Z input for positive-phase signal routing; supports unity-gain buffer configuration. |
| 3 | Output (Amplifier A) | Full rail-to-rail voltage-sourcing/sinking output capable of driving 10kΩ loads. |
| 4 | V– (Ground) | Reference return path for both amplifiers; must be low-impedance to minimize noise coupling. |
| 5 | Noninverting Input (Amplifier B) | Independent high-Z input for second channel; electrically isolated from Amplifier A inputs. |
| 6 | Inverting Input (Amplifier B) | Differential input node for second op-amp; matches electrical characteristics of Pin 1. |
| 7 | Output (Amplifier B) | Second rail-to-rail output; shares V– (Pin 4) and V+ (Pin 8) supply rails with Amplifier A. |
| 8 | V+ (Supply) | Positive supply rail connection; decoupling capacitor (0.1µF) required within 5mm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage range in single-supply systems, preserving SNR when interfacing with 12-bit ADCs. |
| 1.2µA max supply current per amplifier | Reduces total system quiescent power by >50% vs. industry-standard dual op-amps (e.g., LM358), critical for coin-cell applications. |
| 1pA typical input bias current | Eliminates need for guard traces or bias-current compensation resistors in photodiode or piezoelectric sensor front-ends. |
| 60mV max input offset voltage | Permits direct amplification of sub-100mV transducer outputs without calibration or trimming in production test. |
| Unity-gain stable | Supports direct implementation of voltage followers, active filters, and precision gain stages without external compensation components. |
Applications
| Portable Gas Sensors | Wearable ECG Front-Ends |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance signals from electrochemical gas sensing elements operating on coin-cell batteries. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing gain and buffering for analog sensor outputs prior to ADC sampling. Use Value: 1.2µA per amplifier quiescent current extends battery life beyond 5 years while maintaining rail-to-rail swing into low-voltage SAR ADCs. | Use Scenario: Conditioning microvolt-level biopotential signals from dry-electrode ECG sensors in fitness trackers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core (configured as difference amplifier) with matched input pairs minimizing offset drift. Use Value: 60mV max input offset and 0.5µV/°C drift ensure baseline stability across body-temperature variations without recalibration. |
| Smart Meter Current Sensing | Industrial Thermistor Interfaces |
Use Scenario: Amplifying mV-level shunt voltage drops in battery-backed utility meters requiring decade-long field deployment. IC Role / Device Role / Timing Role: Precision current-sense amplifier with rail-to-rail output driving metering SoC analog inputs. Use Value: 1pA input bias current prevents error voltage accumulation across high-value shunt resistor networks, ensuring ±0.5% accuracy over 10 years. | Use Scenario: Linearizing and amplifying resistance changes from NTC thermistors in HVAC control panels powered by 3.3V rails. IC Role / Device Role / Timing Role: Transimpedance amplifier converting thermistor current to voltage, followed by gain stage for ADC input scaling. Use Value: Rail-to-rail I/O allows full 0–3.3V output swing from 0–100°C range, maximizing ADC code utilization without external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher quiescent current (550µA per amp), wider GBW (6.4MHz), but same SO-8 package and rail-to-rail I/O. | Suitable for higher-speed sensor interfaces where bandwidth >10kHz is required, not for ultra-low-power standby modes. | Select TLV2462IDR only when speed outweighs battery life; MAX407CSA+ remains optimal for <100Hz signal chains with µA-level budget. |
| LPV521MG/NOPB | Lower quiescent current (322nA), lower GBW (15.5kHz), and smaller SC70-5 package - single-channel only. | Requires two units for dual functionality; better for space-constrained single-channel designs with extreme power limits. | Choose LPV521MG/NOPB for new single-channel designs below 350nA budget; MAX407CSA+ provides integrated dual-channel solution with proven layout efficiency. |
Compared with TLV2462IDR and LPV521MG/NOPB, the MAX407CSA+ uniquely balances dual-channel integration, 1.2µA quiescent current, and 150kHz bandwidth - making it the only option meeting all three requirements simultaneously in SO-8 footprint for commercial-temperature sensor signal chains.
Availability
MAX407CSA+ is available at Aetrix Electronics and suitable for portable medical devices, smart utility meters, and industrial sensor transmitters requiring stable component supply and long-term manufacturability.
Supply support for MAX407CSA+ 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, automotive, communications, and computing applications.
The MAX406/MAX407/MAX409 family targets ultra-low-power, single-supply signal conditioning in battery-operated and energy-harvesting systems where micropower operation and rail-to-rail performance are mandatory.
FAQ
What is the maximum supply voltage for MAX407CSA+?
The MAX407CSA+ operates with a maximum supply voltage of +6V. Exceeding this rating may cause permanent damage. It is specified for reliable operation from +2.7V to +6V with full rail-to-rail input and output performance across that range. The MAX407CSA+ datasheet confirms this absolute maximum rating applies to both V+ and V– pins relative to each other.
Does MAX407CSA+ support rail-to-rail input common-mode range?
Yes, the MAX407CSA+ supports rail-to-rail input common-mode range - specifically >90% of the supply rail span - enabling direct interface with sensors whose output swings near ground or V+. This capability is verified in the MAX407CSA+ datasheet's Electrical Characteristics table under "Input Common-Mode Range" for the CSO grade.
Is MAX407CSA+ pin-compatible with other devices in the MAX406/MAX407 family?
Yes, the MAX407CSA+ is pin-compatible with all 8-pin SO-packaged variants in the MAX406/MAX407/MAX409 family, including MAX406CSA+, MAX409CSA+, and their temperature-grade equivalents. Pin assignments, footprint, and thermal pad layout are identical across these SO-8 parts per Maxim's S8-2 package specification.
What is the typical input bias current of MAX407CSA+?
The typical input bias current of MAX407CSA+ is 1pA at +25°C, as measured and published in the MAX407CSA+ datasheet's Electrical Characteristics table. This ultra-low value results from its p-channel JFET input stage and enables accurate amplification of signals from high-impedance sources such as photodiodes and piezoelectric sensors.
Can MAX407CSA+ drive capacitive loads directly?
The MAX407CSA+ is not optimized for direct capacitive load driving above 100pF; larger loads may induce instability or overshoot. For loads >100pF, a series isolation resistor (e.g., 100Ω) between the MAX407CSA+ output and the capacitance is recommended. This guidance is documented in the MAX407CSA+ datasheet's "Driving Capacitive Loads" application note section.
MAX407CSA+ 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:
- 2
- 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:
- 1 mV
- Current - Supply:
- 1µA (x2 Channels)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX407CSA+ FAQ
1.How can I place an order for MAX407CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX407CSA+ 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 MAX407CSA+ reliable?
The price and inventory of MAX407CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX407CSA+ is usually 5 days.
3.What payment methods are accepted for MAX407CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX407CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX407CSA+?
MAX407CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX407CSA+ 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 MAX407CSA+?
For technical support, including MAX407CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX407CSA+ requirements.
6.How does Aetrix verify that MAX407CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX407CSA+ 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 MAX407CSA+ meets industry standards.
7.What is the process for return or replacement of MAX407CSA+?
All MAX407CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX407CSA+, 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 MAX407CSA+ part is unused and in its original packaging.
Return procedure for MAX407CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX407CSA+ Tags
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