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Analog Devices Inc./Maxim Integrated MAX407EPA
- Part No.:
- MAX407EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX407EPA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,531
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Product details
Overview
MAX407EPA from Maxim Integrated is a dual, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning in battery-powered systems, featuring 1.2µA max supply current per amplifier, 150kHz gain-bandwidth product, and rail-to-rail output swing at ±0.1V from rails with 10kΩ load - deployed in portable medical sensors and low-power data loggers.
For engineers reviewing the MAX407EPA datasheet, MAX407EPA pinout, MAX407EPA application, or MAX407EPA equivalent, key selection criteria include guaranteed operation over -40°C to +85°C, 8-pin plastic DIP package compatibility with through-hole prototyping, input offset voltage ≤1.5mV (max), and single-supply operation down to +2.7V.
Technical Context
The MAX407EPA integrates two independent precision op amps on a single die, each with CMOS input stage enabling pA-level input bias current (<1pA typical) and high input impedance (>10¹²Ω), supporting high-impedance source interfacing such as pH electrodes and piezoresistive sensors.
It operates from a single +2.7V to +16V supply or split ±1.35V to ±8V supplies, delivering rail-to-rail output swing and internal frequency compensation for unity-gain stability without external components - eliminating need for external compensation networks in standard buffer or gain-stage configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.2µA per amplifier - enables multi-year battery life in coin-cell–powered devices like wearable biosensors. |
| Gain-Bandwidth Product | 150kHz - supports DC to low-frequency AC signal amplification (e.g., ECG, temperature, strain gauge outputs) without instability. |
| Input Offset Voltage | ≤1.5mV (max) - ensures <0.1% error in 10-bit ADC front-end gain stages with 1V full-scale range. |
| Input Bias Current | <1pA (typ) - preserves signal integrity when amplifying from high-Z sources (e.g., glass pH electrodes, photodiode transimpedance). |
| Rail-to-Rail Output | Swings within ±0.1V of rails at 10kΩ load - maximizes dynamic range in single-supply 3.3V or 5V systems. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive cabin ambient environments without derating. |
Pinout & Package
MAX407EPA is housed in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing conforms to JEDEC MS-001 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node for feedback network connection; accepts signals up to rail voltages. |
| 2 | Noninverting Input (Amplifier A) | Direct interface point for high-Z sensors; bias current <1pA minimizes loading error. |
| 3 | Output (Amplifier A) | Rail-to-rail capable output driving 10kΩ minimum load; stable at unity gain. |
| 4 | V– (Negative Supply / GND) | Reference node for single-supply operation; tied to system ground when using +2.7V to +16V supply. |
| 5 | Noninverting Input (Amplifier B) | Independent input for second channel; electrically isolated from Amplifier A except shared supply pins. |
| 6 | Inverting Input (Amplifier B) | Configurable for inverting gain stage or active filter topology with external resistors. |
| 7 | Output (Amplifier B) | Second fully buffered output; identical AC/DC specs to Pin 3, enabling dual-channel signal processing. |
| 8 | V+ (Positive Supply) | Accepts +2.7V to +16V; internal regulation ensures consistent biasing across temperature and supply variation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.2µA per amplifier enables >10-year operation on CR2032 in always-on sensor nodes. |
| CMOS input stage | Input bias current <1pA allows direct connection to pH electrodes and capacitive humidity sensors without guard traces. |
| Rail-to-rail output | Delivers full 3.1Vpp swing from 3.3V supply - increases effective resolution by 1 LSB in 10-bit ADC interfaces. |
| Unity-gain stable | No external compensation required - reduces BOM count and PCB area in instrumentation amplifier front ends. |
| Specified over -40°C to +85°C | Guaranteed performance across industrial temperature range without design margining or thermal derating. |
Applications
| Portable Medical Sensors | Low-Power Data Loggers |
|---|---|
Use Scenario: Amplifying microvolt-level bio-potential signals (e.g., skin-surface EMG) in battery-operated wearable patches. IC Role / Device Role / Timing Role: Dual-channel precision instrumentation front end providing gain and filtering before 12-bit SAR ADC sampling. Use Value: 1.2µA per amplifier extends CR2032 battery life to ≥3 years while maintaining ≤1.5mV offset-induced measurement error. |
Use Scenario: Conditioning thermistor and RTD bridge outputs in remote environmental monitoring nodes powered by solar-charged Li-ion cells. IC Role / Device Role / Timing Role: Dual op amp configured as precision differential amplifier and reference buffer for analog front end. Use Value: Rail-to-rail output maximizes ADC utilization across 0–3.3V range, improving temperature resolution by 0.1°C at 25°C. |
| Industrial Process Transmitters | Smart Building Occupancy Sensors |
Use Scenario: Signal conditioning for 4–20mA loop-powered pressure transducers in factory automation cabinets. IC Role / Device Role / Timing Role: Single-supply I/V converter and output driver operating from loop-derived 12–24V supply. Use Value: Guaranteed -40°C to +85°C operation eliminates thermal drift calibration in unconditioned enclosures. |
Use Scenario: Amplifying weak IR photodiode currents in passive infrared (PIR) motion detectors with coin-cell backup. IC Role / Device Role / Timing Role: Transimpedance amplifier with pA-level input bias enabling high-gain, low-noise detection. Use Value: <1pA input bias prevents signal loss across 10MΩ feedback resistor, preserving detection sensitivity at 10m range. |
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 supply current (22µA per amp), wider GBW (6.4MHz), but same 8-SO/8-DIP footprint. | Better for higher-speed sensor interfaces (e.g., ultrasonic pulse echo); unsuitable for multi-year battery life. | Select when bandwidth >1MHz is required and power budget allows ≥18× higher quiescent draw than MAX407EPA. |
| OPA2340UA | Lower offset (125µV typ), rail-to-rail input/output, but 20µA supply current and no -40°C to +85°C grade in DIP. | Preferred for precision DC-coupled applications where offset dominates error budget, not battery runtime. | Choose only if input offset voltage is critical and surface-mount SO-8 is acceptable; MAX407EPA remains optimal for through-hole, ultra-low-IQ designs. |
Compared with TLV2462IDR and OPA2340UA, the MAX407EPA uniquely delivers sub-1.5mV offset, <1pA bias, and 1.2µA supply current in a through-hole 8-DIP package rated for -40°C to +85°C - making it irreplaceable for long-life, high-impedance, industrial-grade sensor nodes requiring manual assembly or legacy board compatibility.
Availability
MAX407EPA is available at Aetrix Electronics and suitable for portable medical sensors, low-power data loggers, and industrial process transmitters requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX407EPA 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 demanding industrial, medical, and communications applications.
The MAX406/MAX407/MAX409 family was engineered specifically for ultra-low-power, single-supply signal conditioning in battery-constrained and high-impedance sensor systems - prioritizing pA input bias, µA quiescent current, and rail-to-rail output over speed or drive strength.
FAQ
What is the maximum supply voltage rating for the MAX407EPA?
The MAX407EPA supports a single-supply range of +2.7V to +16V or dual supplies of ±1.35V to ±8V. Its absolute maximum V+ to V– rating is 16V, and operation beyond this risks permanent damage. The MAX407EPA maintains specified performance across its full -40°C to +85°C temperature range at all valid supply voltages.
Does the MAX407EPA have rail-to-rail input capability?
No, the MAX407EPA features rail-to-rail *output* swing but does not support rail-to-rail *input*. Its common-mode input voltage range extends to V– (ground) but only up to V+ – 1.2V. For example, with a +5V supply, inputs must remain between 0V and +3.8V to avoid phase reversal or increased offset error.
Is the MAX407EPA pin-compatible with other devices in the MAX406/MAX407 family?
Yes, the MAX407EPA shares identical pinout and footprint with all 8-pin DIP variants in the MAX406/MAX407/MAX409 family, including MAX406EPA, MAX409EPA, and MAX417EPA. This allows direct substitution in existing layouts when upgrading gain, offset, or temperature grade - provided supply and signal constraints align with the selected variant's specifications.
What is the typical input bias current of the MAX407EPA?
The typical input bias current of the MAX407EPA is less than 1pA at +25°C, with guaranteed maximum of 10pA over the full -40°C to +85°C range. This ultra-low value results from its CMOS input stage and enables accurate amplification of signals from high-impedance sources such as pH electrodes, photodiodes, and piezoelectric sensors without significant loading error.
Can the MAX407EPA drive a 1000pF capacitive load directly?
No, the MAX407EPA is not specified for direct driving of >100pF capacitive loads. Driving 1000pF may cause instability or overshoot due to phase margin degradation. For such loads, use a series isolation resistor (e.g., 100Ω) between the MAX407EPA output and the capacitor, or add a unity-gain buffer stage with higher drive capability to maintain stability.
MAX407EPA 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:
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX407EPA FAQ
1.How can I place an order for MAX407EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX407EPA 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 MAX407EPA reliable?
The price and inventory of MAX407EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX407EPA is usually 5 days.
3.What payment methods are accepted for MAX407EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX407EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX407EPA?
MAX407EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX407EPA 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 MAX407EPA?
For technical support, including MAX407EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX407EPA requirements.
6.How does Aetrix verify that MAX407EPA is sourced from the original manufacturer or authorized distributors?
All MAX407EPA 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 MAX407EPA meets industry standards.
7.What is the process for return or replacement of MAX407EPA?
All MAX407EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX407EPA, 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 MAX407EPA part is unused and in its original packaging.
Return procedure for MAX407EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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