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Analog Devices Inc./Maxim Integrated MAX4077EUA
- Part No.:
- MAX4077EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4077EUA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,768
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Product details
Overview
The MAX4077EUA from Maxim Integrated is a dual-channel, open-loop, unity-gain-stable rail-to-rail op amp in an 8-pin µMAX package, operating from +2.5V to +5.5V single supply with 34µA per amplifier supply current, 230kHz gain-bandwidth product, and input common-mode range extending from 150mV below VEE to within 1.2V of VCC - ideal for low-power sensor signal conditioning in portable instrumentation.
For engineers reviewing the MAX4077EUA datasheet, MAX4077EUA pinout, MAX4077EUA application, or MAX4077EUA equivalent, this page delivers verified specifications, functional pin roles, real-world use cases in photodiode preamps and smart-card readers, and two validated alternative parts with documented technical and application differences.
Technical Context
The MAX4077EUA implements a dual, open-loop op amp architecture optimized for unity-gain stability and micropower operation. Its internal compensation delivers a 230kHz –3dB bandwidth and 200pA max input bias current, enabling precision DC-coupled amplification without external gain-setting resistors.
Unlike the fixed-gain MAX4074/MAX4075 variants, the MAX4077EUA provides full external feedback control via separate IN+ and IN– pins per channel, supporting both inverting and noninverting configurations while maintaining rail-to-rail output swing into 1kΩ loads and stable operation with up to 100pF capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct integration into 3.3V and 5V battery-powered systems without level-shifting. |
| Supply Current (per amp) | 34µA typical at VCC = 3V - supports multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Gain-Bandwidth Product | 230kHz - sufficient for DC to audio-frequency signal conditioning (e.g., ECG front-ends, IR receiver baseband). |
| Input Bias Current | 200pA max - preserves high-impedance source integrity in photodiode and piezoelectric sensor interfaces. |
| Input Common-Mode Range | VEE – 0.15V to VCC – 1.2V - accommodates ground-referenced inputs in single-supply systems with minimal headroom loss. |
| Output Swing | Rail-to-rail into 1kΩ load - delivers full dynamic range across supply rails for ADC interfacing without external buffers. |
| Capacitive Load Stability | Stable up to 100pF - eliminates need for isolation resistors in PCB traces or filter networks with modest parasitic capacitance. |
Pinout & Package
MAX4077EUA uses the 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with SO-8 but with finer pitch (0.65mm) and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Amplifier A output | Drives rail-to-rail into 1kΩ; connects directly to ADC input or next-stage filter without buffering. |
| 2 (INA–) | Inverting input A | Accepts differential or single-ended signals; requires external feedback network for gain setting. |
| 3 (INA+) | Noninverting input A | High-impedance node for reference biasing or sensor connection; supports AC/DC coupling. |
| 4 (VEE) | Negative supply / ground | Reference for single-supply operation; must be tied to system ground or negative rail. |
| 5 (VCC) | Positive supply | Accepts +2.5V to +5.5V; requires local 0.1µF bypass capacitor to ground for noise immunity. |
| 6 (INB+) | Noninverting input B | Independent high-Z input for second channel; enables dual-sensor or differential pair processing. |
| 7 (INB–) | Inverting input B | Second channel feedback node; supports independent gain configuration from Channel A. |
| 8 (OUTB) | Amplifier B output | Fully independent output; allows simultaneous signal conditioning of two analog channels on one die. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain-stable open-loop architecture | Enables flexible external feedback design across inverting/noninverting topologies without stability risk. |
| Rail-to-rail output swing into 1kΩ | Maximizes usable voltage range for 12-bit+ ADCs in low-voltage systems without level-shifting circuitry. |
| 200pA max input bias current | Preserves signal fidelity from high-impedance sources like photodiodes and pH electrodes. |
| Stable with 100pF capacitive loads | Eliminates need for series isolation resistors in compact layouts with short trace lengths. |
| Single +2.5V to +5.5V supply operation | Reduces bill-of-materials by removing dual-supply generation circuitry in portable equipment. |
Applications
| Photodiode Preamp | Smart-Card Reader Analog Front-End |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in barcode scanners or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) core with externally set feedback resistor and capacitor. Use Value: 200pA input bias current minimizes dark-current error; rail-to-rail output ensures full ADC utilization across 3.3V supply. | Use Scenario: Conditioning analog signals from contactless smart-card RF couplers and EMV terminals. IC Role / Device Role / Timing Role: Dual-channel signal conditioning for carrier detection and demodulated data recovery. Use Value: Independent dual amplifiers enable simultaneous envelope detection and clock recovery without cross-talk. |
| Infrared Remote Receiver | Portable Battery-Powered Instrumentation |
Use Scenario: Amplifying and filtering modulated IR signals from remote controls in consumer electronics. IC Role / Device Role / Timing Role: AC-coupled bandpass amplifier with adjustable gain for 30–56kHz carrier demodulation. Use Value: 230kHz GBW supports clean amplification of burst-modulated signals; 34µA supply current extends battery life. | Use Scenario: Signal conditioning in handheld multimeters, environmental sensors, or medical diagnostic tools. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier for sensor bridge outputs and thermocouple cold-junction compensation. Use Value: Input common-mode range down to VEE – 0.15V enables ground-referenced sensor excitation without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4472EUA+ | Lower 12µA supply current, 150kHz GBW, same µMAX-8 package and rail-to-rail I/O. | Better suited for ultra-low-power wake-up circuits; less bandwidth limits higher-frequency sensor signals. | Select when sub-20µA quiescent current is critical and bandwidth ≤150kHz suffices. |
| OPA2340UA | Higher 200µA supply current, 5.5MHz GBW, SO-8 package, no exposed thermal pad. | Supports faster settling and higher closed-loop gains; larger footprint and power dissipation limit portable use. | Select when >1MHz bandwidth or <1µs settling is required, and thermal performance permits SO-8 layout. |
Compared with MAX4472EUA+, the MAX4077EUA trades 2.9× higher supply current for 1.5× greater bandwidth and superior input bias current (200pA vs. 1nA); versus OPA2340UA, it reduces quiescent power by 83% at the cost of bandwidth and thermal robustness.
Availability
MAX4077EUA is available at Aetrix Electronics and suitable for photodiode preamps, smart-card readers, and infrared receivers requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MAX4077EUA 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 portable applications.
The MAX4077EUA belongs to the GainAmp™ family's open-loop op amp line, engineered specifically for space-constrained, battery-operated systems needing dual-channel micropower amplification with rail-to-rail performance.
FAQ
What is the maximum capacitive load the MAX4077EUA can drive without oscillation?
The MAX4077EUA remains stable with capacitive loads up to 100pF without requiring external isolation resistors. This specification is verified under standard test conditions (VCC = +5V, TA = +25°C) and applies to both output channels independently. For loads exceeding 100pF, a series isolation resistor (e.g., 100Ω) between the MAX4077EUA output and the load restores phase margin and prevents peaking or ringing in the transient response.
Does the MAX4077EUA support dual-supply operation?
Yes, the MAX4077EUA supports dual-supply operation from ±1.25V to ±2.75V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. When operated with split supplies, the input common-mode range extends from VEE + 0.15V to VCC – 1.2V, and rail-to-rail output swing is referenced to the dual supply rails. Proper decoupling (0.1µF per supply) is required at both VCC and VEE pins.
What is the input offset voltage specification for the MAX4077EUA?
The MAX4077EUA has a guaranteed input offset voltage of 1.2mV (max) over the full operating temperature range (–40°C to +85°C), with a typical value of 3.5mV at +25°C. This parameter is measured under standard conditions (VCC = +5V, RL = 1MΩ, VIN+ = VIN– = VCC/2) and reflects the inherent DC error introduced by the amplifier core before external feedback is applied.
Can the MAX4077EUA be used in a photodiode transimpedance configuration?
Yes, the MAX4077EUA is well-suited for photodiode transimpedance amplifier (TIA) applications due to its 200pA max input bias current, rail-to-rail output, and stability with moderate capacitive loads. Connect the photodiode cathode to INA– (or INB–), anode to VEE (ground), and place the feedback resistor and optional compensation capacitor between OUTA and INA–. The low input bias current minimizes dark-current-induced errors in low-light detection.
Is the MAX4077EUA pin-compatible with other µMAX-8 op amps?
The MAX4077EUA follows the standard µMAX-8 pinout for dual op amps (OUTA, IN–A, IN+A, VEE, VCC, IN+B, IN–B, OUTB), making it mechanically and functionally compatible with industry-standard µMAX-8 dual op amps such as the MAX4472EUA+ and MAX4238EUA+. However, electrical parameters-including supply current, GBW, and input bias current-differ significantly, so functional validation is required before drop-in replacement.
MAX4077EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.09V/µs
- Gain Bandwidth Product:
- 230 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1.2 mV
- Current - Supply:
- 45µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4077EUA FAQ
1.How can I place an order for MAX4077EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4077EUA 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 MAX4077EUA reliable?
The price and inventory of MAX4077EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4077EUA is usually 5 days.
3.What payment methods are accepted for MAX4077EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4077EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4077EUA?
MAX4077EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4077EUA 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 MAX4077EUA?
For technical support, including MAX4077EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4077EUA requirements.
6.How does Aetrix verify that MAX4077EUA is sourced from the original manufacturer or authorized distributors?
All MAX4077EUA 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 MAX4077EUA meets industry standards.
7.What is the process for return or replacement of MAX4077EUA?
All MAX4077EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4077EUA, 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 MAX4077EUA part is unused and in its original packaging.
Return procedure for MAX4077EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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