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Analog Devices Inc./Maxim Integrated MAX419CPD+
- Part No.:
- MAX419CPD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX419CPD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,257
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Product details
Overview
MAX419CPD+ from Maxim Integrated is a quad, single-supply operational amplifier optimized for ultra-low-power sensor signal conditioning in battery-powered systems, featuring 1.2µA max supply current per amplifier, 100kHz gain-bandwidth product, and rail-to-rail output swing at 0°C to +70°C operating temperature. It operates from +2.7V to +12V and delivers ±50mA output drive capability.
For engineers reviewing the MAX419CPD+ datasheet, MAX419CPD+ pinout, MAX419CPD+ application, or MAX419CPD+ equivalent, key selection criteria include quiescent current budgeting for multi-channel portable instrumentation, input offset voltage stability over temperature, rail-to-rail output compliance with ADC reference rails, and SO-14 vs. PDIP-14 package trade-offs for thermal and layout constraints.
Technical Context
The MAX419CPD+ integrates four independent op-amps on a single die with matched internal biasing to maintain consistent 1.2µA per amplifier quiescent current across process and temperature. Its input stage uses p-channel JFET inputs enabling 1pA typical input bias current and 10mV max input offset voltage at room temperature.
Designed for single-supply operation, it achieves rail-to-rail output swing within 20mV of VCC and ground while driving ≥10kΩ loads, and supports unity-gain stable operation without external compensation. The device meets Class B ESD rating (±2kV HBM) and is specified only for 0°C to +70°C ambient operation in 14-pin plastic DIP packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V - Enables direct interface with 3.3V/5V microcontrollers and compatibility with higher-voltage analog front-ends. |
| Quiescent Current (per amp) | 1.2µA max - Allows four amplifiers to consume <5µA total, critical for multi-sensor nodes in 10-year battery life designs. |
| Gain-Bandwidth Product | 100kHz - Supports DC-coupled sensor buffering and low-frequency filtering (e.g., thermistor, strain gauge, pH electrode signals). |
| Input Offset Voltage | 10mV max - Limits baseline error in precision DC-coupled gain stages without trimming components. |
| Output Swing (RL ≥10kΩ) | Rail-to-rail ±20mV - Ensures full dynamic range utilization when driving SAR ADCs referenced to same supply rails. |
| Input Bias Current | 1pA typical - Preserves high-impedance source integrity (e.g., piezoelectric sensors, ion-selective electrodes). |
| Operating Temperature | 0°C to +70°C - Qualified for commercial-grade embedded control and portable test equipment environments. |
Pinout & Package
MAX419CPD+ is housed in a 14-pin plastic DIP (dual in-line package) with 0.300" wide body, standard through-hole mounting, and JEDEC MS-001 compliant footprint. Thermal resistance θJA = 90°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance input node for first op-amp; accepts differential or single-ended signals up to VCC. |
| 2 | Noninverting Input A | High-impedance input node for first op-amp; used for unity-gain buffer or noninverting gain configuration. |
| 3 | Output A | Class AB output stage capable of sourcing/sinking ±50mA into resistive loads ≥10kΩ. |
| 4 | VEE (GND) | Ground reference for all four amplifiers; must be connected to system common return path. |
| 5 | Inverting Input B | Second op-amp inverting input; electrically isolated but thermally coupled to other amplifiers on same die. |
| 6 | Noninverting Input B | Second op-amp noninverting input; matches electrical characteristics of Pin 2 within 10% tolerance. |
| 7 | Output B | Second op-amp output; shares same supply rejection and noise performance as Output A. |
| 8 | VCC | Positive supply rail for all four amplifiers; bypass capacitor (0.1µF ceramic) required at this pin. |
| 9 | Inverting Input C | Third op-amp inverting input; identical topology and matching to Pins 1 and 5. |
| 10 | Noninverting Input C | Third op-amp noninverting input; enables three independent buffered sensor channels in one package. |
| 11 | Output C | Third op-amp output; supports simultaneous conditioning of multiple low-frequency transducers. |
| 12 | Inverting Input D | Fourth op-amp inverting input; completes quad configuration for multi-channel feedback or reference generation. |
| 13 | Noninverting Input D | Fourth op-amp noninverting input; usable as precision voltage follower for reference distribution. |
| 14 | Output D | Fourth op-amp output; allows full use of all four amplifiers without external interconnects. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.2µA per amplifier enables four-channel operation under 5µA total supply current - extends battery life in portable gas detectors and wearable biosensors. |
| Rail-to-rail output | Swings within 20mV of VCC and GND with ≥10kΩ load - maximizes ADC code utilization without level-shifting circuitry. |
| p-Channel JFET input stage | 1pA typical input bias current preserves signal integrity from high-impedance sources like pH electrodes and photodiode transimpedance nodes. |
| Single-supply operation | Operates from +2.7V to +12V - eliminates need for dual supplies in industrial sensor modules powered by 4–20mA loop or Li-ion batteries. |
| Quad configuration in PDIP-14 | Four matched amplifiers in one through-hole package - reduces PCB area and component count versus discrete single-amplifier solutions. |
Applications
| Portable Medical Sensors | Industrial 4–20mA Transmitter |
|---|---|
Use Scenario: Signal conditioning for disposable electrochemical glucose strips in handheld meters requiring multi-day battery life. IC Role / Device Role / Timing Role: Quad op-amp provides simultaneous biasing, amplification, filtering, and reference buffering for amperometric sensing electrodes. Use Value: 1.2µA per amplifier enables full analog front-end operation under 5µA, supporting >3-year CR2032 battery life at intermittent 10-second measurement intervals. | Use Scenario: Analog signal processing in loop-powered field transmitters measuring pressure, temperature, or flow in factory automation. IC Role / Device Role / Timing Role: Four amplifiers condition sensor bridge outputs, generate precise 4mA zero-current offset, scale full-scale voltage, and drive current-loop DAC feedback. Use Value: Rail-to-rail output swing ensures accurate 0–5V scaling into 12-bit DAC references without external level shifters, reducing BOM cost and calibration complexity. |
| Environmental Monitoring Nodes | Low-Power Data Acquisition Modules |
Use Scenario: Multi-sensor environmental station (CO₂, humidity, VOC) deployed in remote locations with solar-charged batteries. IC Role / Device Role / Timing Role: Each amplifier conditions one sensor's output: thermistor voltage divider, capacitive humidity IC, NDIR detector TIA, and reference voltage buffer. Use Value: Matched quiescent current and offset voltage across all four amplifiers minimize channel-to-channel calibration drift over temperature and time. | Use Scenario: Modular data logger capturing slow-varying physical parameters (strain, tilt, soil moisture) at 1Hz sampling rate. IC Role / Device Role / Timing Role: Quad amplifier serves as anti-alias filter, programmable gain stage, ADC driver, and reference buffer in successive-approximation architecture. Use Value: Unity-gain stable design eliminates need for external compensation capacitors, simplifying layout and improving long-term reliability in unattended deployments. |
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 |
|---|---|---|---|
| TLV2464CDR | 22µA per amplifier - 18× higher quiescent current; 2.2MHz GBW - 22× wider bandwidth; 3mV max VOS - 3.3× lower offset. | Targeted at higher-speed, AC-coupled applications (e.g., audio preamps, active filters); unsuitable for sub-5µA battery budgets. | Select TLV2464CDR only if bandwidth >100kHz is required and power budget exceeds 100µA total. |
| LP324DR | 45µA per amplifier - 37.5× higher IQ; 100kHz GBW same; 7mV max VOS; no rail-to-rail output - limited to 1.5V headroom from rails. | Designed for cost-sensitive industrial controls where power is not constrained; requires external level-shifting for ADC interfacing. | Choose LP324DR only for fixed-line-powered systems where PCB cost dominates over energy efficiency and signal fidelity. |
Compared with TLV2464CDR and LP324DR, the MAX419CPD+ uniquely satisfies sub-5µA total quiescent current while retaining rail-to-rail output and 100kHz bandwidth - making it the sole option for battery-operated, multi-channel DC sensor systems requiring both precision and longevity.
Availability
MAX419CPD+ is available at Aetrix Electronics and suitable for portable medical devices, industrial 4–20mA transmitters, and environmental monitoring nodes requiring stable component supply with guaranteed long-term availability and traceable lot-level documentation.
Supply support for MAX419CPD+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX406–MAX419 family was designed specifically for ultra-low-power, single-supply sensor signal conditioning in battery-constrained systems - emphasizing quiescent current minimization without sacrificing DC precision or output drive capability.
FAQ
What is the maximum supply voltage for MAX419CPD+?
The MAX419CPD+ supports a maximum supply voltage of +12V. Operation above this level risks permanent damage to the internal ESD protection structures and input transistors. The device is fully specified from +2.7V to +12V, with optimal DC performance maintained across this entire range. Always include a 0.1µF ceramic bypass capacitor between VCC (Pin 8) and GND (Pin 4) to ensure stability under transient load conditions.
Does MAX419CPD+ support rail-to-rail input operation?
No, the MAX419CPD+ does not feature rail-to-rail input capability. Its input common-mode voltage range extends from 0V to VCC – 1.2V, meaning the inputs cannot accept signals within 1.2V of the positive rail. However, its rail-to-rail output stage swings within 20mV of both supply rails when loaded with ≥10kΩ. This makes MAX419CPD+ ideal for output buffering and gain stages where input signals remain safely below VCC.
Can MAX419CPD+ be used in place of MAX418CPD?
No, MAX419CPD+ is not a functional replacement for MAX418CPD. While both are quad op-amps in 14-pin PDIP packages, MAX418CPD has different internal architecture: it features 1.8µA max quiescent current per amplifier, 200kHz GBW, and 25mV max input offset voltage - differing significantly from MAX419CPD+'s 1.2µA, 100kHz, and 10mV specs. Their pinouts are identical, but electrical behavior and temperature specifications differ enough to require full circuit revalidation.
What is the input bias current specification for MAX419CPD+?
The MAX419CPD+ exhibits a typical input bias current of 1pA at +25°C, with a maximum of 10pA over the full 0°C to +70°C operating range. This ultra-low value results from its p-channel JFET input stage and enables accurate amplification of signals from high-impedance sources such as pH electrodes, piezoelectric sensors, and photodiodes in transimpedance configurations without significant DC error.
Is MAX419CPD+ qualified for automotive applications?
No, MAX419CPD+ is not qualified for automotive applications. It is rated only for 0°C to +70°C commercial temperature operation and lacks AEC-Q200 qualification, extended temperature screening, or automotive-specific reliability testing. For automotive use, consider the MAX419EPD variant (–40°C to +85°C), though even that part is not AEC-Q200 certified and would require additional system-level validation before deployment in vehicle ECUs.
MAX419CPD+ 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MAX419CPD+ FAQ
1.How can I place an order for MAX419CPD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX419CPD+ 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 MAX419CPD+ reliable?
The price and inventory of MAX419CPD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX419CPD+ is usually 5 days.
3.What payment methods are accepted for MAX419CPD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX419CPD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX419CPD+?
MAX419CPD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX419CPD+ 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 MAX419CPD+?
For technical support, including MAX419CPD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX419CPD+ requirements.
6.How does Aetrix verify that MAX419CPD+ is sourced from the original manufacturer or authorized distributors?
All MAX419CPD+ 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 MAX419CPD+ meets industry standards.
7.What is the process for return or replacement of MAX419CPD+?
All MAX419CPD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX419CPD+, 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 MAX419CPD+ part is unused and in its original packaging.
Return procedure for MAX419CPD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX419CPD+ Tags
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