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Analog Devices Inc./Maxim Integrated MAX480ESA+
- Part No.:
- MAX480ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX480ESA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:88,658
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Product details
Overview
MAX480ESA+ from Maxim Integrated is a high-precision, micropower operational amplifier designed for low-voltage, battery-critical signal conditioning. It delivers 140µV max input offset voltage, 20µA max supply current, and rail-to-rail input/output swing down to the negative supply rail - enabling true single-supply operation from +1.6V to +36V or dual supplies from ±0.8V to ±18V. It is used in precision sensor front-ends and long-life portable instrumentation.
For engineers reviewing the MAX480ESA+ datasheet, MAX480ESA+ pinout, MAX480ESA+ application, or MAX480ESA+ equivalent, key selection criteria include guaranteed micropower consumption (<20µA), ultra-low offset drift (2.0µV/°C max), rail-to-rail input common-mode range including ground, and compatibility with standard 741 pinout for drop-in replacement in legacy designs.
Technical Context
The MAX480ESA+ implements a precision bipolar input stage optimized for minimal input bias current (3nA max) and offset voltage drift (2.0µV/°C max), supporting stable DC-coupled amplification in high-impedance sensor interfaces. Its open-loop gain exceeds 500 V/mV and CMRR reaches 110 dB, ensuring accuracy under varying supply and common-mode conditions.
It supports full rail-to-rail input voltage range (including V−) and output swing within 100mV of rails at 2kΩ load, enabling maximum dynamic range in single-supply systems. The device maintains functional stability with capacitive loads up to 650pF and operates across −40°C to +85°C without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 140µV max - ensures <0.1% gain error in 100mV full-scale sensor amplification |
| Supply Current | 20µA max - enables >10,000 hours runtime on 250mAh coin cell |
| Input Bias Current | 3nA max - minimizes voltage error across >10MΩ source impedances |
| Offset Voltage Drift | 2.0µV/°C max - limits thermal-induced error to <140µV over −40°C to +85°C |
| Output Drive | 5mA min - supports direct driving of 1kΩ loads or ADC reference buffers |
| Common-Mode Rejection | 110 dB max - rejects >99.999% of power-supply ripple in single-supply configurations |
| Open-Loop Gain | 500 V/mV min - provides ≥80dB loop gain at unity gain, ensuring stable closed-loop accuracy |
Pinout & Package
MAX480ESA+ is housed in an 8-pin SO (SOIC-N) surface-mount package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Null (Offset Adjust) | Connects to V− for zero-adjust; enables trimming of residual input offset voltage |
| 2 | Inverting Input (IN−) | Differential input node; accepts signals referenced to V− or ground in single-supply mode |
| 3 | Non-Inverting Input (IN+) | Differential input node; supports rail-to-rail common-mode input including V− |
| 4 | V− (Negative Supply) | Power rail connection; input/output ranges extend to this pin, enabling true single-supply use |
| 5 | Null (Offset Adjust) | Second null terminal; used with Pin 1 for external potentiometer-based offset cancellation |
| 6 | Output (OUT) | Amplified output; swings within 100mV of V− and V+ at 2kΩ load |
| 7 | V+ (Positive Supply) | Power rail connection; supports supply voltages up to +36V or ±18V |
| 8 | No Connect (N.C.) | Internally unused; must be left floating or tied to ground per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes V− (ground in single-supply), eliminating level-shifting circuitry for 0–V+ sensor outputs |
| Ultra-low quiescent current | 20µA max enables multi-year operation from primary lithium cells without duty cycling |
| Standard 741 pinout | Direct mechanical and electrical replacement for legacy 741-based designs without PCB redesign |
| Guaranteed 140µV VOS over temperature | Ensures consistent DC accuracy in industrial environments without recalibration |
| 5mA output drive capability | Drives 10-bit SAR ADC reference inputs or multiple parallel 10kΩ loads directly |
Applications
| Portable Gas Sensor Front-End | Low-Power Thermocouple Amplifier |
|---|---|
Use Scenario: Amplifying µV-level thermopile or electrochemical sensor outputs in handheld air quality monitors powered by CR2032 cells. IC Role / Device Role / Timing Role: Precision DC-coupled transducer amplifier with rail-to-rail input to capture full sensor range near ground. Use Value: 20µA supply current extends battery life beyond 3 years; 140µV VOS ensures sub-0.5°C measurement uncertainty in CO detection. | Use Scenario: Cold-junction compensation and linearization of Type-K thermocouple signals in battery-operated temperature loggers. IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier front-end with matched input bias for thermocouple wire impedance balancing. Use Value: 3nA input bias current prevents >10µV error across 10kΩ thermocouple leads; 2.0µV/°C drift minimizes calibration drift over field temperature range. |
| Medical Pulse Oximeter Analog Front-End | Industrial 4–20mA Loop-Powered Transmitter |
Use Scenario: Amplifying weak photodiode currents from red/IR LEDs in wearable SpO₂ sensors with strict power budget constraints. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input capacitance and rail-to-rail output for driving ADC inputs. Use Value: 650pF capacitive load stability allows direct connection to ADC input capacitance; 5mA output drives 10kΩ ADC reference divider without buffer. | Use Scenario: Signal conditioning of RTD or pressure bridge outputs in two-wire 4–20mA transmitters powered from loop voltage (12–36V). IC Role / Device Role / Timing Role: High-common-mode-rejection (110 dB) amplifier operating from loop-derived supply with wide input voltage range. Use Value: ±18V absolute max supply rating accommodates transient spikes on industrial loops; PSRR >110dB suppresses supply noise from loop-powered regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1492CS8#PBF | Higher supply current (35µA typ), lower VOS (30µV max), no null pins | Lacks offset-null capability; better for new designs where trimming is unnecessary | Preferred when lowest possible offset is critical and board space allows higher IQ |
| OPA333AIDBVR | Zero-drift architecture, 10µV max VOS, 17µA IQ, but only 5.5V max supply | Not suitable for >5.5V single-supply or ±18V dual-supply systems | Select only for low-voltage (<5.5V) battery systems requiring sub-10µV offset stability |
Compared with LT1492CS8#PBF and OPA333AIDBVR, the MAX480ESA+ uniquely combines 140µV VOS guarantee, 20µA IQ, rail-to-rail input including V−, and 741-compatible pinout - making it the only option for legacy-replacement, wide-supply, trimmable precision amplification where PCB change is prohibited.
Availability
MAX480ESA+ is available at Aetrix Electronics and suitable for precision sensor front-ends, battery-powered medical devices, and industrial loop-powered transmitters requiring stable component supply and long-term obsolescence management.
Supply support for MAX480ESA+ 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 semiconductor company specializing in analog, mixed-signal, and high-reliability ICs for industrial, medical, and communications systems.
The MAX480ESA+ belongs to Maxim's precision op amp product line, engineered for ultra-low-power, high-accuracy DC signal conditioning in resource-constrained and battery-operated applications.
FAQ
Is MAX480ESA+ still in production and supported for new designs?
No - MAX480ESA+ is Not Recommended for New Designs due to discontinuation of its wafer fabrication process. However, Aetrix Electronics maintains active inventory and offers lifecycle coordination support. For new designs, consult Maxim's technical support for approved replacements such as the MAX44267 or industry alternatives. MAX480ESA+ remains fully functional and supported for existing production and repair programs.
What is the maximum capacitive load the MAX480ESA+ can drive stably?
The MAX480ESA+ is specified for stable operation with capacitive loads up to 650pF, as confirmed in the datasheet's "Capacitive Load Stability" parameter. This allows direct interfacing with typical ADC input capacitances (e.g., 10–50pF) and RC anti-aliasing filters without added isolation resistance. Exceeding 650pF may cause peaking or oscillation unless compensated per Figure 14 in the MAX480 datasheet.
Does MAX480ESA+ support true single-supply operation with input signals at ground?
Yes - the MAX480ESA+ features rail-to-rail input common-mode range that explicitly includes the negative supply rail (V−). When V− = 0V (ground), inputs can swing from 0V to V+, enabling direct amplification of ground-referenced sensor outputs like thermistors or bridge circuits without level-shifting circuitry.
Can MAX480ESA+ be used in place of a standard LM741 in existing designs?
Yes - MAX480ESA+ uses the standard 741 pinout (with Pins 1 and 5 designated for nulling), allowing direct mechanical and electrical replacement in most LM741-based circuits. Key improvements include 100× lower supply current (20µA vs. ~1.7mA), 10× lower offset voltage (140µV vs. ~5mV), and rail-to-rail input - but verify output swing and bandwidth requirements, as MAX480ESA+ has lower slew rate (5V/ms) than LM741 (0.5V/µs).
What is the guaranteed input offset voltage specification for MAX480ESA+ over its full temperature range?
The MAX480ESA+ guarantees a maximum input offset voltage of 220µV over its full operating temperature range of −40°C to +85°C, as specified in the "ELECTRICAL CHARACTERISTICS" table for the MAX480E grade. At +25°C, the limit is tighter (140µV max), and typical performance is 25µV - making it among the lowest-offset micropower op amps available for extended-temperature applications.
MAX480ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.012V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 nA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 14µA
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX480ESA+ FAQ
1.How can I place an order for MAX480ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX480ESA+ 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 MAX480ESA+ reliable?
The price and inventory of MAX480ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX480ESA+ is usually 5 days.
3.What payment methods are accepted for MAX480ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX480ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX480ESA+?
MAX480ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX480ESA+ 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 MAX480ESA+?
For technical support, including MAX480ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX480ESA+ requirements.
6.How does Aetrix verify that MAX480ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX480ESA+ 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 MAX480ESA+ meets industry standards.
7.What is the process for return or replacement of MAX480ESA+?
All MAX480ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX480ESA+, 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 MAX480ESA+ part is unused and in its original packaging.
Return procedure for MAX480ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX480ESA+ Tags
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