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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:3,130
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Product details
Overview
MAX407CSA from Maxim Integrated is a dual, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning and battery-powered instrumentation. It features 1.2µA max supply current per amplifier, 150kHz gain-bandwidth product, and rail-to-rail output swing with ±0.5mV input offset voltage at +25°C - enabling precision DC-coupled amplification in portable medical monitors and low-power data loggers.
For engineers reviewing the MAX407CSA datasheet, MAX407CSA pinout, MAX407CSA application, or MAX407CSA equivalent, key selection criteria include its dual-channel SO-8 configuration, guaranteed operation from +2.7V to +6.5V supply, and specified performance across 0°C to +70°C ambient - critical for cost-sensitive industrial sensor nodes and handheld test equipment requiring minimal quiescent power.
Technical Context
The MAX407CSA integrates two independent op-amps on a single die with matched input bias currents (<1pA) and CMOS input stages, supporting high-impedance source interfacing without external bias networks. Its internal compensation ensures stable unity-gain operation with capacitive loads up to 100pF.
Designed for single-supply systems, it delivers rail-to-rail output voltage swing (within 15mV of rails at 100kΩ load) and maintains 150kHz bandwidth across full temperature range - enabling accurate amplification of low-frequency biosignals and thermistor outputs without AC coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6.5V - supports direct connection to single-cell Li-ion or two-cell alkaline batteries without regulation. |
| Quiescent Current per Amp | 1.2µA max - enables years of operation from coin-cell batteries in always-on sensor front-ends. |
| Gain-Bandwidth Product | 150kHz - sufficient for DC to 100Hz biomedical signals (ECG, EEG) with <0.1dB gain flatness. |
| Input Offset Voltage | ±0.5mV max at +25°C - eliminates need for manual nulling in precision bridge amplifier circuits. |
| Output Swing | Rail-to-rail (within 15mV of VCC/GND at 100kΩ) - maximizes dynamic range in 3.3V ADC interfaces. |
| Input Bias Current | <1pA - preserves signal integrity when amplifying high-impedance pH electrodes or photodiode currents. |
Pinout & Package
MAX407CSA is housed in an 8-pin SO (Small Outline) package (S8-2), measuring 4.9mm × 3.9mm × 1.75mm, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp A) | High-impedance node for feedback network connection in inverting configurations. |
| 2 | Noninverting Input (Amp A) | Accepts high-Z sensor signals (e.g., thermistor divider) without loading error. |
| 3 | Output (Amp A) | Delivers rail-to-rail voltage to next stage (e.g., ADC driver or comparator input). |
| 4 | GND | Reference return for both amplifiers and supply decoupling capacitor placement. |
| 5 | Noninverting Input (Amp B) | Independent input for second signal path (e.g., reference channel or differential pair). |
| 6 | Inverting Input (Amp B) | Configurable for transimpedance or difference-amplifier topologies. |
| 7 | Output (Amp B) | Provides isolated second output for dual-sensor systems or active filtering stages. |
| 8 | VCC | Single positive supply input; requires local 0.1µF ceramic decoupling to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.2µA per amplifier enables >10-year battery life in continuous-monitoring wearables. |
| Rail-to-rail output | Maximizes usable ADC input range in 3.3V systems without level-shifting circuitry. |
| CMOS input stage | Sub-picoampere bias current prevents signal loss in high-resistance sensor interfaces. |
| Single-supply operation | Eliminates need for negative rail generation in portable instrumentation designs. |
Applications
| Portable ECG Monitor | Thermistor-Based Temperature Logger |
|---|---|
Use Scenario: Amplifying microvolt-level cardiac signals from dry-electrode sensors in battery-powered wearable devices. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with one amp for signal path and one for reference/offset cancellation. Use Value: 1.2µA per amplifier extends coin-cell battery life to >3 years while maintaining ±0.5mV offset stability over 0°C–70°C. | Use Scenario: Linearizing and scaling resistance changes from NTC thermistors in environmental data loggers deployed for months. IC Role / Device Role / Timing Role: Precision voltage follower and buffer driving ADC input, rejecting lead-wire resistance errors. Use Value: Rail-to-rail output ensures full 0–3.3V ADC utilization across -20°C to +60°C operating range without external level shifters. |
| Low-Power Gas Sensor Interface | Handheld Multimeter Front-End |
Use Scenario: Conditioning current output from electrochemical gas sensors in portable air-quality analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA–nA sensor currents into measurable voltage with minimal power overhead. Use Value: Sub-pA input bias current prevents baseline drift during long-term ppm-level CO detection cycles. | Use Scenario: High-input-impedance buffer for autoranging analog front-end in compact handheld DMMs. IC Role / Device Role / Timing Role: Dual-channel unity-gain follower isolating multiplexer outputs from ADC sampling capacitance. Use Value: 150kHz GBW supports fast settling (<10µs) after range switching while consuming only 2.4µA total quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, ultra-low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher quiescent current (22µA per amp); wider supply range (2.7V–6V); 6.4MHz GBW. | Better for higher-speed sensor interfaces but unsuitable for multi-year battery life requirements. | Select TLV2462IDR only when bandwidth >100kHz is required and power budget allows ≥10× higher IQ. |
| LTC1540CS8#TRPBF | Single-channel micropower op amp (1.3µA); no dual version available; 2.5kHz GBW. | Requires two devices for dual-channel function; limited bandwidth restricts use to DC/low-frequency applications only. | Choose LTC1540CS8#TRPBF only for space-constrained single-channel designs where 2.5kHz bandwidth suffices. |
Compared with TLV2462IDR and LTC1540CS8#TRPBF, the MAX407CSA uniquely balances dual-channel integration, 1.2µA per amplifier quiescent current, and 150kHz bandwidth - making it the only option that meets multi-year battery life, dual-signal-path, and sub-200kHz signal fidelity requirements simultaneously.
Availability
MAX407CSA is available at Aetrix Electronics and suitable for portable medical devices, environmental data loggers, and handheld test equipment requiring stable component supply and long-term production continuity.
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, medical, and communications applications.
The MAX406/MAX407/MAX409 family targets ultra-low-power signal conditioning in battery-operated instrumentation, emphasizing sub-microamp quiescent current and rail-to-rail operation without sacrificing DC accuracy.
FAQ
What is the maximum operating temperature range for the MAX407CSA?
The MAX407CSA is rated for operation from 0°C to +70°C ambient temperature. This commercial-grade specification is defined in the official Maxim Integrated datasheet for the MAX407CSA variant and applies to all electrical parameters unless otherwise noted. The device is not characterized for extended temperature ranges like -40°C to +85°C (ESA grade) or -55°C to +125°C (MJA grade). For designs requiring wider thermal margins, consider the MAX407ESA or MAX407MJA instead of the MAX407CSA.
Does the MAX407CSA support rail-to-rail input voltage range?
No, the MAX407CSA does not support rail-to-rail input. Its input common-mode voltage range extends from 0V (GND) to VCC – 1.2V, as specified in the MAX406/MAX407/MAX409 datasheet. However, it does provide rail-to-rail output swing (within 15mV of VCC and GND). For true rail-to-rail input capability, alternative op-amps such as the MAX4475 or AD8605 would be required - the MAX407CSA is optimized for ultra-low power, not full input range.
What package type is used for the MAX407CSA?
The MAX407CSA uses an 8-pin Small Outline (SO) package, also designated S8-2 per Maxim's package documentation. It measures 4.9mm × 3.9mm with 1.27mm lead pitch and gull-wing leads compatible with standard surface-mount reflow processes. This is distinct from the plastic DIP (P8-1) or CERDIP (J8-2) variants offered in the same MAX407 family, and the SO package enables higher board density in space-constrained portable designs.
Can the MAX407CSA drive capacitive loads directly?
Yes, the MAX407CSA is internally compensated for stable operation with capacitive loads up to 100pF, as confirmed in the MAX406/MAX407/MAX409 datasheet. This allows direct connection to ADC input capacitors or long PCB traces without external isolation resistors. For loads exceeding 100pF, a series resistor (typically 10–100Ω) should be added between the MAX407CSA output and the capacitive node to maintain phase margin and prevent oscillation.
Is the MAX407CSA pin-compatible with other devices in the MAX406/MAX407 family?
Yes, the MAX407CSA shares identical pinout and footprint with all 8-pin SO variants in the MAX406/MAX407/MAX409 family, including MAX406CSA, MAX409CSA, MAX417CSA, and their temperature-grade equivalents (e.g., MAX407ESA). This allows direct substitution within the same package type, provided the functional differences - such as number of amplifiers (dual for MAX407 vs. single for MAX406) and bandwidth - are accounted for in the schematic and layout.
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:
- Obsolete
- 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.
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