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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 QUAD 1.2UA MAX 14-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:790
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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 industrial and portable systems. It features 1.2µA max supply current per amplifier, 150kHz gain-bandwidth product, rail-to-rail output swing, and operates from +2.7V to +11V with input common-mode range extending to ground. It is used in battery-powered gas sensors and low-power analog front-ends.
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, rail-to-rail output drive into 10kΩ loads, and input bias current below 10pA at 25°C.
Technical Context
The MAX419EPD integrates four independent amplifiers on a single die with matched DC performance across channels. Its input stage uses P-channel JFET inputs to achieve sub-10pA bias current and rail-to-rail common-mode input range down to ground, enabling direct interfacing with resistive sensors and current-output transducers.
Each amplifier delivers 150kHz unity-gain bandwidth and 0.03% THD+N at 1kHz while consuming only 1.2µA per channel. The output stage drives rail-to-rail into ≥10kΩ loads and remains stable with capacitive loads up to 100pF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +11V - supports single-cell Li-ion and multi-cell alkaline battery systems without level-shifting. |
| Quiescent Current per Amp | 1.2µA max - enables >10-year battery life in always-on sensor nodes powered by CR2032 cells. |
| Gain-Bandwidth Product | 150kHz - sufficient for DC–10kHz sensor signal amplification with ≤1% gain error at 1kHz. |
| Input Bias Current | <10pA at +25°C - preserves high-impedance source integrity (e.g., pH electrodes, piezoresistive bridges). |
| Input Common-Mode Range | 0V to (VCC – 1.2V) - allows direct connection to ground-referenced transducers without level-shifting circuitry. |
| Rail-to-Rail Output | Swing within 20mV of rails at 10kΩ load - maximizes dynamic range in low-voltage ADC interfaces. |
| Operating Temperature | -40°C to +85°C - qualified for industrial control cabinets and outdoor environmental monitoring enclosures. |
Pinout & Package
MAX419EPD is housed in a 14-pin plastic DIP (dual in-line package) with 0.300-inch body width and standard 0.1-inch pin pitch, compatible with through-hole PCB assembly and socket-based prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance differential input for first op-amp channel; accepts signals down to ground potential. |
| 2 | Noninverting Input A | High-impedance differential input for first op-amp channel; supports DC-coupled sensor interfaces. |
| 3 | Output A | Rail-to-rail output capable of sourcing/sinking ±2mA into 10kΩ load at full temperature range. |
| 4 | V– | Negative supply terminal; tied to ground in single-supply configurations. |
| 5 | Noninverting Input B | Second op-amp input; electrically isolated and matched to Channel A for dual-sensor differential pairs. |
| 6 | Inverting Input B | Second op-amp inverting input; supports active filtering or transimpedance configurations. |
| 7 | Output B | Independent output for second amplifier; no crosstalk with Channels C/D under typical operating conditions. |
| 8 | Output C | Third amplifier output; shares V+ and V– rails but maintains channel-to-channel PSRR >80dB. |
| 9 | Inverting Input C | Third amplifier inverting input; layout symmetry ensures matched thermal drift vs. Channel D. |
| 10 | Noninverting Input C | Third amplifier noninverting input; referenced to same ground as all other inputs for common-mode rejection. |
| 11 | V+ | Positive supply terminal; accepts +2.7V to +11V; bypass capacitor required at pin for stability. |
| 12 | Noninverting Input D | Fourth amplifier input; enables simultaneous processing of four independent sensor signals. |
| 13 | Inverting Input D | Fourth amplifier inverting input; supports programmable gain stages via external feedback networks. |
| 14 | Output D | Final amplifier output; specified for 150kHz GBW and 1.2µA quiescent current at -40°C to +85°C. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.2µA per amplifier enables multi-year operation from coin-cell batteries in wireless sensor nodes. |
| Rail-to-rail output swing | Delivers full-scale signal to 12-bit SAR ADCs without external level-shifting components. |
| Ground-sensing input stage | P-channel JFET inputs allow direct interface with 0V-referenced bridge sensors and thermistors. |
| Quad-channel integration | Reduces board space by 75% versus discrete single-op-amp solutions in multi-sensor data loggers. |
| Industrial temperature grade | Guaranteed parametric performance from -40°C to +85°C eliminates derating calculations for outdoor deployments. |
Applications
| Gas Sensor Signal Conditioning | Portable Environmental Monitor |
|---|---|
Use Scenario: Amplifying low-level current output (nA–µA) from electrochemical CO and NO₂ sensors in handheld air quality meters. IC Role / Device Role / Timing Role: Quad transimpedance amplifier converting sensor current to voltage while rejecting EMI-induced common-mode noise. Use Value: Sub-10pA input bias current prevents signal loss across high-value feedback resistors (≥10MΩ), preserving measurement resolution. | Use Scenario: Simultaneous conditioning of temperature (NTC), humidity (capacitive), and barometric pressure (piezoresistive) sensor outputs in battery-powered field units. IC Role / Device Role / Timing Role: Four independent DC-coupled amplifiers providing gain, offset correction, and anti-alias filtering before multiplexed ADC sampling. Use Value: 1.2µA per channel total supply current extends CR2450 battery life beyond 3 years in continuous 1-minute sampling mode. |
| Industrial Process Controller I/O Module | Low-Power Data Acquisition System |
Use Scenario: Front-end amplification for 4–20mA loop-powered transmitters in PLC analog input cards operating in factory environments. IC Role / Device Role / Timing Role: Rail-to-rail output driver interfacing with precision 16-bit DACs and isolation amplifiers in modular I/O designs. Use Value: Guaranteed -40°C to +85°C operation eliminates need for local heating/cooling in unconditioned control cabinets. | Use Scenario: Multi-channel analog signal preprocessing in edge-node vibration monitors using MEMS accelerometers and strain gauges. IC Role / Device Role / Timing Role: Quad amplifier array performing gain, filtering, and DC offset removal prior to sigma-delta ADC conversion. Use Value: Matched channel parameters (gain error <0.1%, offset drift <0.5µV/°C) ensure consistent calibration across all four input channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, ultra-low-power, single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 650nA/quiescent current; 6.4MHz GBW; rail-to-rail input/output; SO-14 package only. | Better AC performance but consumes >500× more supply current - unsuitable for coin-cell lifetime targets. | Select TLV2464IDR only when bandwidth >100kHz and fast settling are required, and power budget allows ≥2.6µA per channel. |
| LPV821MRX/NOPB | Single-channel, 650pA IB, 33kHz GBW, SC70-5 package; requires four devices for quad function. | Lower input bias than MAX419EPD but lacks integration - increases PCB area, component count, and matching variance. | Choose LPV821MRX/NOPB for ultra-high-impedance sources (e.g., photodiode arrays) where <1pA bias is mandatory and board space is not constrained. |
Compared with TLV2464IDR and LPV821MRX/NOPB, the MAX419EPD uniquely balances sub-1.2µA per channel consumption, 150kHz bandwidth, quad integration in through-hole DIP, and -40°C to +85°C qualification - making it optimal for cost-sensitive, long-life, multi-sensor industrial instrumentation.
Availability
MAX419EPD is available at Aetrix Electronics and suitable for industrial process controllers, portable environmental monitors, and low-power data acquisition systems 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 developed to address ultra-low-power, single-supply signal conditioning needs in battery-operated and energy-constrained sensor systems - emphasizing rail-to-rail operation, ground-sensing inputs, and guaranteed performance across industrial temperatures.
FAQ
What is the maximum supply voltage rating for MAX419EPD?
The MAX419EPD is rated for operation from +2.7V to +11V DC on its V+ pin, with V– tied to ground in single-supply configurations. Exceeding +11V may cause permanent damage or parametric shift. The absolute maximum rating is +13.2V, but operation above +11V voids guaranteed specifications per the datasheet.
Does MAX419EPD support rail-to-rail input operation?
No, the MAX419EPD does not support rail-to-rail input operation. Its input common-mode voltage range extends from ground (0V) to (VCC – 1.2V). While this enables ground-sensing capability critical for sensor interfaces, the upper limit excludes the positive rail - unlike true rail-to-rail input op amps.
Can MAX419EPD drive capacitive loads directly?
Yes, the MAX419EPD is stable driving capacitive loads up to 100pF without external compensation. This allows direct connection to ADC input capacitors and shielded cables in data acquisition systems. Loads exceeding 100pF require series resistance (≥100Ω) in series with the output to maintain phase margin.
Is MAX419EPD pin-compatible with other devices in the MAX417–MAX419 family?
Yes, MAX419EPD shares identical pinout and footprint with MAX417EPD and MAX418EPD - all are 14-pin plastic DIP quad op amps. However, electrical differences exist: MAX417 is dual, MAX418 is quad with different GBW (1MHz), and MAX419EPD is quad with 150kHz GBW and 1.2µA quiescent current.
What is the typical input offset voltage for MAX419EPD at room temperature?
The typical input offset voltage for MAX419EPD at +25°C is 1.5mV, with a maximum specification of 4.5mV over the full -40°C to +85°C operating range. This value is measured under standard test conditions with VCC = +5V and RL = 10kΩ to VCC/2.
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:
- Discontinued at Digi-Key
- 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.
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