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Analog Devices Inc./Maxim Integrated MAX419EPD+
- Part No.:
- MAX419EPD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX419EPD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
MAX419EPD+ from Maxim Integrated is a quad, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning in battery-powered industrial and portable systems. 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 3V/5V systems.
For engineers reviewing the MAX419EPD+ datasheet, MAX419EPD+ pinout, MAX419EPD+ application, or MAX419EPD+ equivalent, key selection criteria include guaranteed operation over -40°C to +85°C, 14-pin plastic DIP package compatibility with legacy through-hole layouts, and verified performance under single-supply conditions down to 2.7V.
Technical Context
The MAX419EPD+ integrates four independent op-amps on a single die, each with internally trimmed input offset voltage and matched bias currents. Its CMOS input stage delivers 1pA typical input bias current and 100dB minimum open-loop gain at 1kHz, supporting high-impedance source interfacing without external trimming.
This device operates from a single 2.7V to 6V supply and maintains stable unity-gain operation without external compensation. Input common-mode range extends from ground to VCC – 1.2V, and output swings within 20mV of either rail under 10kΩ load - critical for maximizing dynamic range in low-voltage data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current (per amp) | 1.2µA max - enables multi-channel sensing nodes with years of battery life on coin cells |
| Gain-Bandwidth Product | 150kHz - supports low-frequency sensor signals (e.g., thermistors, strain gauges) with stable closed-loop response |
| Input Offset Voltage | ±0.5mV max at +25°C - reduces DC error in precision instrumentation front-ends |
| Input Bias Current | 1pA typical - preserves signal integrity when driving from high-impedance sources like pH electrodes |
| Output Swing | Rail-to-rail (within 20mV) - maximizes usable ADC input range in 3V systems |
| Operating Temperature | -40°C to +85°C - qualified for industrial control and outdoor environmental monitoring |
| Supply Voltage Range | 2.7V to 6.0V - compatible with standard Li-ion, alkaline, and regulated 3.3V rails |
Pinout & Package
MAX419EPD+ is housed in a 14-pin plastic DIP (dual in-line package), footprint-compatible with industry-standard 0.3-inch wide DIP-14 layouts and socketable for prototyping and burn-in testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output channel A - drives downstream ADC or comparator input |
| 2 | IN– A | Inverting input for amplifier A - accepts feedback network or differential signal path |
| 3 | IN+ A | Noninverting input for amplifier A - connects to sensor reference or high-Z source |
| 4 | V– | Negative supply pin - tied to ground in single-supply configurations |
| 5 | IN+ B | Noninverting input for amplifier B - isolated from channel A for dual-sensor buffering |
| 6 | IN– B | Inverting input for amplifier B - supports independent gain-setting resistor network |
| 7 | OUT B | Inverting amplifier output channel B - provides second analog signal path |
| 8 | OUT C | Inverting amplifier output channel C - enables three-channel simultaneous sampling |
| 9 | IN– C | Inverting input for amplifier C - electrically isolated from channels A/B for noise immunity |
| 10 | IN+ C | Noninverting input for amplifier C - referenced to same ground as other inputs |
| 11 | V+ | Positive supply pin - accepts 2.7V–6V single rail; decoupling capacitor required |
| 12 | IN+ D | Noninverting input for amplifier D - supports fourth independent sensor interface |
| 13 | IN– D | Inverting input for amplifier D - configurable for unity-gain buffer or active filter |
| 14 | OUT D | Inverting amplifier output channel D - completes quad-channel analog front-end |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.2µA per amplifier - extends battery life in wireless sensor nodes and portable meters |
| Rail-to-rail output | Swings within 20mV of V+ and ground - preserves full-scale resolution when driving 12-bit ADCs |
| Single-supply operation | 2.7V to 6V range - eliminates need for split supplies in space-constrained designs |
| Low input offset voltage | ±0.5mV max - minimizes calibration overhead in precision temperature or pressure transducers |
| High input impedance | 1pA typical bias current - prevents loading errors in piezoelectric or electrochemical sensors |
Applications
| Temperature Monitoring System | Portable Gas Detector |
|---|---|
Use Scenario: Amplifying low-level voltage from platinum RTD or thermistor bridges in HVAC controllers and industrial PLC modules. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent instrumentation preamplifiers, each with selectable gain and offset correction. Use Value: 1.2µA per amplifier enables continuous 4-channel measurement while maintaining >5-year battery life on two AA cells. | Use Scenario: Signal conditioning for electrochemical gas sensors requiring stable biasing and low-noise amplification in handheld safety equipment. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier + dual-channel reference buffer for sensor bias and signal recovery. Use Value: Rail-to-rail output swing ensures full utilization of 3.3V ADC input range despite varying sensor output levels. |
| Medical Pulse Oximeter Front-End | Smart Agriculture Soil Moisture Node |
Use Scenario: Amplifying weak photodiode currents from red/IR LEDs in wearable pulse oximetry modules with strict power budgets. IC Role / Device Role / Timing Role: Two op-amps used as synchronous TIA stages; remaining two as LED current drivers and reference buffers. Use Value: 1pA input bias current prevents signal distortion from high-impedance photodiodes, improving SpO₂ accuracy. | Use Scenario: Conditioning resistive soil moisture sensor outputs across multiple zones in solar-powered field gateways. IC Role / Device Role / Timing Role: Four independent unity-gain buffers isolating four parallel sensor probes from shared ADC multiplexer. Use Value: Guaranteed -40°C to +85°C operation ensures reliable performance in unsheltered outdoor enclosures year-round. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Higher 350µA supply current per amp; wider 0°C to +70°C temp range; no rail-to-rail output | Suitable for cost-sensitive, non-battery applications where power efficiency is secondary | Select LM324DR only if board space allows SOIC-14 and system power budget exceeds 1.4mA total |
| TLV2464CDR | Lower 22µA supply current but requires ≥2.7V supply; rail-to-rail I/O; higher 6.4MHz GBW | Better for higher-speed sensor interfaces (e.g., ultrasonic distance) but less optimal for sub-200kHz DC-coupled use | Choose TLV2464CDR when bandwidth >1MHz is needed and battery life remains acceptable at ~88µA total |
Compared with LM324DR and TLV2464CDR, MAX419EPD+ uniquely balances ultra-low power (1.2µA/amp), guaranteed industrial temperature range (-40°C to +85°C), and rail-to-rail output in a through-hole DIP package - making it the only option for legacy-replacement, long-life, low-voltage sensor nodes.
Availability
MAX419EPD+ is available at Aetrix Electronics and suitable for temperature monitoring systems, portable gas detectors, medical pulse oximeters, smart agriculture nodes, and industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX419EPD+ 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–MAX419 family was engineered specifically for ultra-low-power, single-supply sensor signal conditioning - targeting battery-operated instrumentation where microamp-level quiescent current and rail-to-rail output are mandatory.
FAQ
What is the operating supply voltage range for MAX419EPD+?
The MAX419EPD+ operates from a single supply of 2.7V to 6.0V. This range supports common battery chemistries including two-cell alkaline (3.0V nominal), Li-ion (3.6V nominal), and regulated 3.3V or 5V rails. Operation below 2.7V is not specified, and exceeding 6.0V may damage the device. The MAX419EPD+ maintains full parameter guarantees across this entire range at temperatures from -40°C to +85°C.
Does MAX419EPD+ support rail-to-rail input operation?
No, MAX419EPD+ does not support rail-to-rail input operation. Its input common-mode voltage range extends from ground to VCC – 1.2V. For example, at VCC = 3.3V, the valid input range is 0V to 2.1V. However, the output is rail-to-rail (within 20mV of both rails), which is explicitly specified in the MAX419EPD+ datasheet and verified across temperature and load conditions.
What is the maximum input offset voltage specification for MAX419EPD+?
The MAX419EPD+ has a maximum input offset voltage of ±0.5mV at +25°C, with no additional drift specification provided over temperature. This value is guaranteed for all four amplifiers in the package and applies under standard test conditions (VCC = 5V, RL ≥ 10kΩ). The offset voltage contributes directly to DC measurement error in precision sensor interfaces, making this spec critical for applications like RTD or thermistor linearization.
Is MAX419EPD+ pin-compatible with other devices in the MAX406–MAX419 family?
Yes, MAX419EPD+ shares identical pinout and electrical behavior with all other 14-pin variants in the MAX419 series (e.g., MAX419CSD, MAX419ESD, MAX419MJD), differing only in temperature grade and package type. It is not pin-compatible with the 8-pin MAX406/MAX407/MAX409 or 14-pin MAX418 variants due to different internal channel counts and pin assignments.
Can MAX419EPD+ drive capacitive loads directly?
The MAX419EPD+ is not characterized for direct driving of large capacitive loads (>100pF) without external isolation. Its datasheet specifies stable unity-gain operation with purely resistive loads; adding capacitance at the output may cause peaking or oscillation. For driving ADC input capacitors or cables, a small series resistor (e.g., 10Ω–50Ω) between the MAX419EPD+ output and the load is recommended to ensure stability and preserve settling time performance.
MAX419EPD+ 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:
- 0.08V/µs
- Gain Bandwidth Product:
- 150 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
MAX419EPD+ FAQ
1.How can I place an order for MAX419EPD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX419EPD+ 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 MAX419EPD+ reliable?
The price and inventory of MAX419EPD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX419EPD+ is usually 5 days.
3.What payment methods are accepted for MAX419EPD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX419EPD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX419EPD+?
MAX419EPD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX419EPD+ 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 MAX419EPD+?
For technical support, including MAX419EPD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX419EPD+ requirements.
6.How does Aetrix verify that MAX419EPD+ is sourced from the original manufacturer or authorized distributors?
All MAX419EPD+ 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 MAX419EPD+ meets industry standards.
7.What is the process for return or replacement of MAX419EPD+?
All MAX419EPD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX419EPD+, 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 MAX419EPD+ part is unused and in its original packaging.
Return procedure for MAX419EPD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX419EPD+ Tags
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