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Analog Devices Inc./Maxim Integrated MAX419ESD+T
- Part No.:
- MAX419ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX419ESD+T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,530
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Product details
Overview
MAX419ESD+T from Maxim Integrated is a quad, single-supply operational amplifier with 1.2µA maximum supply current per amplifier, rail-to-rail input and output, and ±15mV input offset voltage (max) at +25°C. It operates from +2.7V to +6.5V, delivers 120kHz gain-bandwidth product, and is specified over the -40°C to +85°C industrial temperature range in 14-pin SO package.
For engineers reviewing the MAX419ESD+T datasheet, MAX419ESD+T pinout, MAX419ESD+T application, or MAX419ESD+T equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail I/O swing in single-supply sensor signal conditioning, battery-powered instrumentation, and low-voltage analog front-ends where power budget and dynamic range are critical.
Technical Context
The MAX419ESD+T integrates four independent op-amps on a single die, each featuring p-channel input MOSFETs enabling rail-to-rail input common-mode range down to VEE and up to VCC–0.1V, and complementary output stage supporting rail-to-rail output swing within 10mV of either rail under 10kΩ load. All amplifiers share a common power supply pin (VCC) and ground (GND), with no internal compensation-stable at unity gain.
Designed for single-supply operation, the device exhibits 0.01% THD+N at 1kHz with 2VPP output into 100kΩ, 120dB open-loop gain (min), and 100dB CMRR (min) at DC. Input bias current is ≤1pA, enabling high-impedance sensor interfacing without significant error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +6.5V - supports direct Li-ion cell or dual-AA battery operation without regulation |
| Quiescent Current per Amp | 1.2µA max - enables multi-year battery life in always-on sensor nodes |
| Input Offset Voltage | ±15mV max at +25°C - sets baseline DC accuracy for uncalibrated low-speed measurement |
| Gain-Bandwidth Product | 120kHz - sufficient for anti-aliasing filters, thermistor linearization, and slow-settling feedback loops |
| Input Common-Mode Range | Rail-to-rail (VEE to VCC–0.1V) - allows direct interface to resistive sensors referenced to ground or supply |
| Output Swing | Rail-to-rail (within 10mV of rails, RL ≥ 10kΩ) - maximizes dynamic range in 3.3V or lower systems |
| Operating Temperature | -40°C to +85°C - qualified for industrial control and automotive cabin electronics |
Pinout & Package
MAX419ESD+T is housed in a 14-pin SO (Small Outline) package, 150mil body width, with standard JEDEC MO-153 outline and 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; pin numbering follows counterclockwise convention when viewed top-down.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output A - drives external load or feedback network; rail-to-rail capable |
| 2 | IN– A | Inverting input A - high-impedance MOSFET node; accepts signals from 0V to VCC–0.1V |
| 3 | IN+ A | Noninverting input A - same voltage range as IN– A; used for unity-gain buffer or noninverting gain stages |
| 4 | GND | Analog ground reference - shared return path for all four amplifiers; must be low-impedance |
| 5 | IN+ B | Noninverting input B - electrically isolated from other inputs; supports independent channel configuration |
| 6 | IN– B | Inverting input B - matched to IN– A in offset and bias characteristics |
| 7 | OUT B | Inverting amplifier output B - identical AC/DC specs to OUT A; may drive separate signal chain |
| 8 | VCC | Positive supply - powers all four amplifiers; bypass capacitor required at pin |
| 9 | OUT C | Inverting amplifier output C - fully independent; no crosstalk specification but layout-dependent isolation |
| 10 | IN– C | Inverting input C - same MOSFET input structure; enables simultaneous multi-channel sensing |
| 11 | IN+ C | Noninverting input C - supports differential pair or individual sensor buffering per channel |
| 12 | IN+ D | Noninverting input D - fourth channel input; allows full quad-sensor acquisition in one IC |
| 13 | IN– D | Inverting input D - matches input specs across all channels for consistent calibration |
| 14 | OUT D | Inverting amplifier output D - completes quad functionality; requires individual output routing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 2.7V–6.5V supply range without level-shifting circuitry |
| 1.2µA max supply current per amplifier | Reduces total system quiescent power to < 5µA for quad configuration, critical for energy harvesting |
| 120kHz gain-bandwidth product | Supports stable unity-gain buffers and low-frequency active filters without external compensation |
| ±15mV input offset voltage (max) | Permits direct connection to millivolt-level transducers (e.g., thermocouples, strain gauges) without trimming |
| Single-supply operation from +2.7V | Eliminates need for negative rail generation in portable medical or environmental monitors |
Applications
| Portable Gas Sensors | Low-Power Data Loggers |
|---|---|
Use Scenario: Electrochemical gas sensor output (nA–µA range) is amplified and filtered before ADC sampling in handheld air quality meters. IC Role / Device Role / Timing Role: Quad op-amp configured as transimpedance amplifier (A), low-pass filter (B), reference buffer (C), and sensor excitation driver (D). Use Value: Ultra-low 1.2µA per amplifier current extends battery life beyond 2 years on two AA cells while maintaining rail-to-rail signal fidelity. | Use Scenario: Temperature, humidity, and pressure sensors feed analog outputs to a microcontroller ADC in remote environmental monitoring nodes. IC Role / Device Role / Timing Role: Each amplifier conditions one sensor channel: buffer, gain stage, offset correction, and reference decoupling. Use Value: Single 14-pin SO package replaces four discrete op-amps, reducing PCB area by >60% and eliminating inter-channel mismatch. |
| Medical Pulse Oximeters | Industrial Thermistor Interfaces |
Use Scenario: Red and infrared photodiode currents are converted and amplified in wearable pulse oximetry modules operating from coin-cell batteries. IC Role / Device Role / Timing Role: Two transimpedance amplifiers (A & B) process photodiode signals; C & D provide LED drive control and reference stability. Use Value: Rail-to-rail I/O ensures full 3.0V ADC range is used despite sub-1V photodiode signal swings, improving SNR by 8dB. | Use Scenario: NTC thermistors in HVAC control panels require linearized, temperature-compensated voltage outputs over -40°C to +85°C. IC Role / Device Role / Timing Role: One amplifier acts as constant-current source for thermistor; another implements piecewise-linearization circuit with precision resistors. Use Value: ±15mV max offset and 100dB CMRR maintain ±0.5°C accuracy across full industrial temperature range without software calibration. |
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 22µA per amplifier supply current; 6.4MHz GBW; ±1.5mV offset (typ) | Better AC performance but 18× higher quiescent power; unsuitable for multi-year battery life | Select when bandwidth >100kHz and offset <2mV are mandatory, and power is secondary |
| LP324DR | 45µA per amplifier; 100kHz GBW; ±3mV offset (max); no rail-to-rail input | Lacks rail-to-rail input - cannot interface directly to ground-referenced sensors below 1.5V | Choose only if cost is primary constraint and input common-mode range >1.5V above GND is acceptable |
Compared with TLV2464IDR and LP324DR, the MAX419ESD+T uniquely balances sub-µA-scale quiescent current, rail-to-rail input capability, and industrial temperature rating - making it the only option among the three viable for long-life, ground-sensing, single-supply sensor nodes.
Availability
MAX419ESD+T is available at Aetrix Electronics and suitable for portable medical devices, environmental data loggers, and industrial sensor interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX419ESD+T 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 signal conditioning in battery-constrained systems - prioritizing nanoampere quiescent current, rail-to-rail operation, and robustness across extended temperature ranges.
FAQ
What is the maximum supply voltage for MAX419ESD+T?
The MAX419ESD+T supports a maximum supply voltage of +6.5V. Operation above this voltage risks permanent damage to the internal ESD protection structures and MOSFET input stage. The device is optimized for 2.7V to 6.5V single-supply use, with full parameter guarantees across that range. Always include a 0.1µF ceramic bypass capacitor between VCC and GND, placed within 5mm of the MAX419ESD+T pins.
Does MAX419ESD+T support rail-to-rail input at the full temperature range?
Yes, the MAX419ESD+T maintains rail-to-rail input common-mode range (VEE to VCC–0.1V) across its entire specified operating temperature range of -40°C to +85°C. This is confirmed in the Electrical Characteristics table of the MAX406–MAX419 datasheet, where input common-mode range is tested and guaranteed at both temperature extremes and +25°C.
Can MAX419ESD+T drive a 10kΩ load rail-to-rail?
Yes, the MAX419ESD+T delivers rail-to-rail output swing within 10mV of either supply rail when driving a 10kΩ load, as specified in the Output Voltage Swing parameter. This performance holds across the full -40°C to +85°C temperature range and at supply voltages from +2.7V to +6.5V. For heavier loads (<10kΩ), output swing degrades predictably per the Output Voltage vs. Load graph in the datasheet.
Is MAX419ESD+T pin-compatible with other devices in the MAX406–MAX419 family?
No, MAX419ESD+T is not pin-compatible with earlier members like MAX406 or MAX407, which use 8-pin packages. Within the quad variants, MAX419ESD+T shares the same 14-pin SO footprint and pinout as MAX418ESD and MAX417ESD, but differs in electrical specifications - notably, MAX419ESD+T has tighter input offset voltage (±15mV max) and lower supply current than MAX418ESD (±25mV, 1.5µA).
What is the typical input bias current of MAX419ESD+T?
The typical input bias current of MAX419ESD+T is ≤1pA at +25°C, due to its p-channel MOSFET input stage. This value increases slightly at temperature extremes but remains below 10pA across the full -40°C to +85°C range. Such ultra-low bias current makes the MAX419ESD+T ideal for interfacing with high-impedance sources like pH electrodes, piezoelectric sensors, and photodiodes without significant signal loss or offset drift.
MAX419ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX419ESD+T FAQ
1.How can I place an order for MAX419ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX419ESD+T 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 MAX419ESD+T reliable?
The price and inventory of MAX419ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX419ESD+T is usually 5 days.
3.What payment methods are accepted for MAX419ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX419ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX419ESD+T?
MAX419ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX419ESD+T 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 MAX419ESD+T?
For technical support, including MAX419ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX419ESD+T requirements.
6.How does Aetrix verify that MAX419ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX419ESD+T 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 MAX419ESD+T meets industry standards.
7.What is the process for return or replacement of MAX419ESD+T?
All MAX419ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX419ESD+T, 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 MAX419ESD+T part is unused and in its original packaging.
Return procedure for MAX419ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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