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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:4,286
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Product details
Overview
MAX480ESA from Maxim Integrated is a high-precision, micropower operational amplifier designed for ultra-low-power analog signal conditioning in battery-critical systems. It delivers 140µV max input offset voltage, 20µA max supply current, and rail-to-rail input/output operation down to +1.6V single supply - enabling >10,000-hour operation from a 250mAh lithium coin cell in precision sensor front-ends.
For engineers reviewing the MAX480ESA datasheet, MAX480ESA pinout, MAX480ESA application, or MAX480ESA equivalent, key selection criteria include guaranteed offset drift (≤2.0µV/°C), true single-supply capability with ground-referenced inputs/outputs, output drive strength (≥5mA), and compatibility with standard 741 pinout for legacy design integration.
Technical Context
The MAX480ESA uses a proprietary bipolar process optimized for micropower precision, achieving sub-10nA input bias current and 500V/mV minimum open-loop gain while maintaining stability with capacitive loads up to 650pF. Its input stage operates with common-mode range extending to the negative rail, and output swings within 100mV of both rails under 10kΩ load.
It supports dual-supply operation from ±0.8V to ±18V or single-supply from +1.6V to +36V, with PSRR ≥85dB and CMRR ≥90dB across temperature. The device includes internal nulling terminals (pins 1 and 8) for manual offset trimming - a feature retained from legacy 741-compatible architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 140µV max - enables DC-coupled amplification of µV-level sensor signals without calibration |
| Supply Current | 20µA max - allows continuous operation for >10,000 hours on 250mAh coin cell |
| Input Offset Drift | 2.0µV/°C max - ensures stable baseline over industrial temperature range (−40°C to +85°C) |
| Output Drive | 5mA min sink/source - drives 10kΩ loads while maintaining rail-to-rail swing |
| Common-Mode Range | Includes V− rail - supports true single-supply operation with ground-referenced inputs |
| Open-Loop Gain | 500V/mV min - provides ≥114dB loop gain for high-accuracy closed-loop configurations |
| PSRR / CMRR | ≥85dB / ≥90dB - rejects supply noise and common-mode interference in noisy embedded environments |
Pinout & Package
MAX480ESA is housed in an 8-pin SO (Small Outline) package, compliant with JEDEC MS-012, with 1.27mm pitch and gull-wing leads. Thermal resistance θJA = 170°C/W; derating begins above +70°C at 5.88mW/°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Null Input (−) | Connects to V− for offset nulling; used with external potentiometer between pins 1 and 8 |
| 2 | Inverting Input (IN−) | Differential input node; accepts signals referenced to V− or ground in single-supply mode |
| 3 | Noninverting Input (IN+) | Differential input node; common-mode range extends to V− rail |
| 4 | Negative Supply (V−) | Reference for all internal circuitry; also serves as null reference and output swing lower bound |
| 5 | No Connect (N.C.) | Internally unconnected; must be left floating or tied to V− per layout guidelines |
| 6 | Output (OUT) | Class-AB output stage; sources/sinks ≥5mA while swinging within 100mV of V− and V+ |
| 7 | Positive Supply (V+) | Power rail; supports single-supply operation from +1.6V to +36V or dual ±0.8V to ±18V |
| 8 | Null Input (+) | Connects to V+ for offset nulling; forms adjustable voltage divider with pin 1 for trim |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage single-supply systems (e.g., +3.3V or +5V) |
| Standard 741 pinout with nulling | Allows drop-in replacement in legacy designs requiring manual offset calibration |
| 2.0µV/°C max offset drift | Reduces need for system-level recalibration across −40°C to +85°C operating range |
| 650pF capacitive load stability | Permits direct driving of ADC input filters or long PCB traces without external compensation |
| 3nA max input bias current | Minimizes voltage error in high-impedance sensor interfaces (e.g., thermistors, pH electrodes) |
Applications
| Portable Gas Sensor Front-End | Medical ECG Signal Conditioning |
|---|---|
Use Scenario: Amplifying nanoamp-level current from electrochemical gas sensors powered by coin cells. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with rail-to-rail input/output and ultra-low quiescent current. Use Value: Enables >1-year battery life while maintaining <100µV offset error across temperature - critical for ppm-level gas concentration accuracy. |
Use Scenario: Low-noise, DC-coupled amplification of microvolt-level biopotential signals in wearable ECG monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ground-referenced input and high CMRR. Use Value: Delivers 90dB+ CMRR and ≤2µV/°C drift to reject motion artifacts and power-line interference without AC coupling. |
| Industrial RTD Temperature Transmitter | Low-Power Data Logger Analog Front-End |
Use Scenario: Exciting and amplifying bridge outputs from 3-wire Pt100 RTDs in battery-powered field transmitters. IC Role / Device Role / Timing Role: Precision voltage follower and differential amplifier with matched input bias current. Use Value: 3nA max input bias current minimizes self-heating error in high-resistance RTD legs; 140µV offset ensures <0.1°C absolute accuracy. |
Use Scenario: Multiplexed analog signal conditioning for multi-channel environmental sensors (temp, humidity, light) logging at 1Hz intervals. IC Role / Device Role / Timing Role: Micropower signal conditioner enabling wake-up-and-measure architecture. Use Value: 20µA quiescent current allows >5 years of operation on AA batteries when combined with deep-sleep MCU control. |
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 |
|---|---|---|---|
| LT1492IS8#PBF | Higher supply current (65µA typ), wider supply range (±1.25V to ±22V), no null pins | Lacks manual offset trimming; better suited for automated production where calibration is performed digitally | Select when higher speed (1.1MHz GBW) and digital calibration replace manual nulling |
| OPA333AIDBVR | Zero-drift architecture (0.02µV/°C drift), lower offset (10µV max), but 17µA supply current and no null pins | Superior drift performance eliminates thermal recalibration; not pin-compatible with MAX480ESA | Select when long-term DC stability outweighs legacy pinout compatibility and manual trim flexibility |
Compared with LT1492IS8#PBF and OPA333AIDBVR, the MAX480ESA uniquely retains the 741-compatible nulling interface and lowest specified offset voltage among micropower op amps with manual trim - making it irreplaceable in field-serviceable or recalibratable legacy systems despite its Not Recommended for New Designs status.
Availability
MAX480ESA is available at Aetrix Electronics and suitable for precision micropower amplifiers, battery-powered analog circuits, and micropower signal processing applications requiring stable component supply and long-lifecycle support.
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 high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX480ESA belongs to Maxim's precision op amp product line, engineered specifically for ultra-low-power, high-accuracy signal conditioning in resource-constrained environments where battery life and DC stability are paramount.
FAQ
What does "Not Recommended for New Designs" mean for the MAX480ESA?
The MAX480ESA is marked Not Recommended for New Designs because its wafer fabrication process has been discontinued by Maxim's external foundry. While fully functional and supported for existing designs, Maxim advises new projects to select alternatives like the OPA333 or LT1492. Aetrix Electronics maintains active inventory and traceable sourcing for MAX480ESA to support legacy production and repair programs.
Does the MAX480ESA support true single-supply operation with ground-referenced inputs?
Yes, the MAX480ESA supports true single-supply operation: both input common-mode range and output swing extend to the negative supply rail (V−), which can be connected to ground. This allows use with +1.6V to +36V single supplies while accepting input signals down to 0V and delivering output voltages near 0V - essential for interfacing with microcontrollers and ADCs sharing the same ground reference.
What is the purpose of pins 1 and 8 on the MAX480ESA?
Pins 1 and 8 are nulling terminals that enable manual adjustment of input offset voltage using an external 10kΩ potentiometer. Pin 1 connects to V− and pin 8 to V+, forming a voltage divider whose midpoint offsets the input stage. This feature preserves compatibility with legacy 741-based designs requiring field calibration and distinguishes MAX480ESA from modern zero-drift op amps lacking hardware trim capability.
Can the MAX480ESA drive capacitive loads without oscillation?
Yes, the MAX480ESA is specified for stable operation with capacitive loads up to 650pF, as confirmed in the Absolute Maximum Ratings table. This allows direct connection to ADC input capacitors, RC anti-aliasing filters, or long PCB traces without requiring isolation resistors or external compensation networks - simplifying layout in space-constrained portable instruments.
What is the maximum output current capability of the MAX480ESA?
The MAX480ESA guarantees a minimum output current of ±5mA into resistive loads, verified under conditions of V+ = 5V, V− = 0V, and RL = 2kΩ. This drive strength supports direct interfacing with LED indicators, small relays, or multiple parallel input stages without external buffers - while maintaining rail-to-rail output swing within 100mV of the supply rails.
MAX480ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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.
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