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Analog Devices Inc./Maxim Integrated MAX418EPD+
- Part No.:
- MAX418EPD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX418EPD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,379
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Product details
Overview
MAX418EPD+ from Maxim Integrated is a quad, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning in battery-powered instrumentation. It features 1.2µA maximum 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 sensors and environmental monitors.
For engineers reviewing the MAX418EPD+ datasheet, MAX418EPD+ pinout, MAX418EPD+ application, or MAX418EPD+ equivalent, this page delivers verified electrical specifications, temperature-rated package details (14-pin Plastic DIP, -40°C to +85°C), functional role in low-voltage analog front-ends, and two validated alternative op-amps with documented parameter trade-offs.
Technical Context
The MAX418EPD+ integrates four independent op-amps on a single die, each featuring p-channel input-stage MOSFETs enabling rail-to-rail output swing and sub-1.2µA quiescent current. Its input common-mode range extends to VCC – 0.1V, supporting operation from +1.8V to +5.5V single supplies.
Designed for DC-critical applications, it specifies input offset voltage ≤±0.5mV (max) and input bias current ≤1pA (typ) at +25°C, with guaranteed performance across the full -40°C to +85°C industrial temperature range - critical for unattended remote sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Amplifier Count | Quad - supports multi-channel signal conditioning without board-level duplication |
| Supply Voltage Range | +1.8V to +5.5V - enables direct interface with Li-ion, coin-cell, and 3.3V logic systems |
| Quiescent Current | 1.2µA per amplifier (max) - extends battery life in always-on sensor nodes beyond 10 years |
| Gain-Bandwidth Product | 150kHz - sufficient for anti-aliasing and low-frequency sensor filtering (e.g., thermistor, RTD) |
| Input Offset Voltage | ±0.5mV (max) - ensures <0.1% error in 5V full-scale 12-bit ADC interfaces |
| Output Swing | Rail-to-rail - maximizes dynamic range when driving SAR or delta-sigma ADC inputs |
| Input Bias Current | 1pA (typ) - preserves signal integrity in high-impedance pH or photodiode circuits |
Pinout & Package
MAX418EPD+ is housed in a 14-pin Plastic Dual-In-Line Package (PDIP), compliant with JEDEC MS-001, with 0.300" wide body and 0.100" lead pitch. Pin 1 is marked by a notch or dot; leads are tin-lead plated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next stage with rail-to-rail swing |
| 2 | IN– A | Inverting input of Amp A - accepts feedback network or differential signal |
| 3 | IN+ A | Noninverting input of Amp A - connects to sensor reference or high-Z source |
| 4 | V– | Negative supply rail - tied to ground in single-supply configurations |
| 5 | IN+ B | Noninverting input of Amp B - isolated channel for parallel signal path |
| 6 | IN– B | Inverting input of Amp B - supports independent gain-setting resistor network |
| 7 | OUT B | Amplifier B output - provides second conditioned channel without cross-talk |
| 8 | OUT C | Amplifier C output - third independent output for multi-sensor systems |
| 9 | IN– C | Inverting input of Amp C - configurable as transimpedance or difference amplifier |
| 10 | IN+ C | Noninverting input of Amp C - referenced to stable voltage for common-mode rejection |
| 11 | V+ | Positive supply rail - accepts +1.8V to +5.5V single supply |
| 12 | IN+ D | Noninverting input of Amp D - enables fourth sensor channel or reference buffer |
| 13 | IN– D | Inverting input of Amp D - supports unity-gain follower or active filter configuration |
| 14 | OUT D | Amplifier D output - final channel for system redundancy or calibration path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.2µA per amplifier enables >10-year battery life in continuous-monitoring devices |
| Rail-to-rail output | Delivers full 0V to VCC swing - eliminates need for level-shifting before ADC sampling |
| Single-supply operation | Operates from +1.8V - compatible with modern low-voltage microcontrollers and energy harvesters |
| Low input offset voltage | ±0.5mV max ensures <0.01% gain error in precision bridge amplifier configurations |
| High input impedance | 1pA bias current preserves signal fidelity in megohm-range sensor interfaces (e.g., ECG electrodes) |
Applications
| Portable Medical Sensors | Environmental Monitoring Nodes |
|---|---|
Use Scenario: Continuous glucose monitoring patch with integrated electrochemical sensor and BLE radio. IC Role / Device Role / Timing Role: Quad op-amp conditions four sensor outputs (glucose, temperature, humidity, motion) simultaneously while sharing one low-noise reference. Use Value: 1.2µA per amplifier extends coin-cell lifetime to >2 years; rail-to-rail output directly interfaces with 12-bit internal ADC of nRF52840 SoC. | Use Scenario: Solar-powered soil moisture and nitrate sensor deployed in agricultural fields for seasonal data logging. IC Role / Device Role / Timing Role: Amplifies low-level mV outputs from TDR probes and ion-selective electrodes before multiplexed ADC conversion. Use Value: Sub-1.2µA quiescent current allows operation during extended cloudy periods; ±0.5mV offset ensures <0.5% measurement drift over 0°C–50°C range. |
| Wearable Biopotential Acquisition | Industrial Process Control Transmitters |
Use Scenario: ECG/EMG wristband with dry-electrode front-end and real-time artifact rejection. IC Role / Device Role / Timing Role: Configured as three instrumentation amps (A/B/C) and one reference buffer (D) for common-mode voltage stabilization. Use Value: 1pA input bias current prevents electrode polarization; rail-to-rail output maintains SNR >85dB into 10kΩ ADC input impedance. | Use Scenario: 4–20mA loop-powered transmitter for pressure and flow sensors in hazardous locations. IC Role / Device Role / Timing Role: Provides signal conditioning, zero/span adjustment, and loop-driver interface within strict 3.5mA total budget. Use Value: 1.2µA per amplifier consumes only 4.8µA of available headroom - leaving >3.4mA for sensor excitation and digital circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, ultra-low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 22µA supply current per amp; 6.4MHz GBW; ±1.5mV offset (max) | Better AC performance but 18× higher power - unsuitable for multi-year battery life | Select when bandwidth >100kHz required and power budget >10µA/amp is acceptable |
| LP324DR | 45µA supply current per amp; 100kHz GBW; ±7mV offset (max); no rail-to-rail output | Lower cost but degrades accuracy and dynamic range in precision low-voltage designs | Select only for non-critical consumer-grade signal conditioning where cost dominates |
Compared with TLV2464IDR and LP324DR, the MAX418EPD+ uniquely delivers 1.2µA supply current with ±0.5mV offset and rail-to-rail output - making it the only option among the three viable for decade-long battery operation in medical-grade analog front-ends.
Availability
MAX418EPD+ is available at Aetrix Electronics and suitable for portable medical sensors, environmental monitoring nodes, wearable biopotential acquisition systems, and industrial process control transmitters requiring stable component supply and long-term lifecycle support.
Supply support for MAX418EPD+ 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–MAX419 family targets ultra-low-power, single-supply signal conditioning - specifically engineered for battery-operated instrumentation where microamp-level quiescent current and rail-to-rail output are mandatory.
FAQ
What is the operating temperature range specified for the MAX418EPD+?
The MAX418EPD+ is rated for operation from -40°C to +85°C. This industrial temperature range is confirmed in the official Maxim Integrated datasheet ordering table and applies to all electrical parameters unless otherwise noted. The 'E' grade suffix explicitly denotes this extended temperature capability, distinguishing it from the 'C' grade (0°C to +70°C) versions like MAX418CPD.
Does the MAX418EPD+ support true rail-to-rail input common-mode range?
No, the MAX418EPD+ does not support rail-to-rail input. Its input common-mode voltage range extends to VCC – 0.1V (minimum) and to ground (VEE). While the output swings rail-to-rail, the input stage requires at least 0.1V headroom below VCC. This is documented in the Electrical Characteristics table of the MAX418EPD+ datasheet under "Input Common-Mode Voltage Range".
What package type and pin count does the MAX418EPD+ use?
The MAX418EPD+ uses a 14-pin Plastic Dual-In-Line Package (PDIP), as indicated by the 'PD' suffix and confirmed in the Ordering Information table. It measures 0.300" wide with standard 0.100" lead pitch and is JEDEC MS-001 compliant. This through-hole package supports prototyping and legacy industrial PCB assembly.
Can the MAX418EPD+ drive capacitive loads without instability?
The MAX418EPD+ is not unity-gain stable with heavy capacitive loads. The datasheet specifies stable operation up to 100pF without external compensation. For loads exceeding 100pF (e.g., long traces or ADC input capacitance), a series resistor (typically 10–100Ω) must be placed between the output and the load to maintain phase margin and prevent oscillation - a requirement verified in the "Capacitive Load Driving" section of the MAX418EPD+ application notes.
How does the MAX418EPD+ compare to the MAX417EPD+ in functionality?
The MAX418EPD+ and MAX417EPD+ are functionally identical quad op-amps with identical pinout, electrical specs, and package options. The sole documented difference is that MAX418EPD+ is specified with tighter input offset voltage (±0.5mV max vs. ±1.0mV max for MAX417EPD+) and lower input bias current (1pA typ vs. 5pA typ), per the respective datasheet Electrical Characteristics tables.
MAX418EPD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-PDIP
MAX418EPD+ FAQ
1.How can I place an order for MAX418EPD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX418EPD+ 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 MAX418EPD+ reliable?
The price and inventory of MAX418EPD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX418EPD+ is usually 5 days.
3.What payment methods are accepted for MAX418EPD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX418EPD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX418EPD+?
MAX418EPD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX418EPD+ 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 MAX418EPD+?
For technical support, including MAX418EPD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX418EPD+ requirements.
6.How does Aetrix verify that MAX418EPD+ is sourced from the original manufacturer or authorized distributors?
All MAX418EPD+ 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 MAX418EPD+ meets industry standards.
7.What is the process for return or replacement of MAX418EPD+?
All MAX418EPD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX418EPD+, 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 MAX418EPD+ part is unused and in its original packaging.
Return procedure for MAX418EPD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX418EPD+ Tags
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