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Analog Devices Inc./Maxim Integrated MAX4078ESD+
- Part No.:
- MAX4078ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4078ESD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,753
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Product details
Overview
The MAX4078ESD+ from Maxim Integrated is a quad-channel, open-loop, unity-gain-stable rail-to-rail operational amplifier in a 14-pin SO 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 - optimized for low-power sensor signal conditioning in portable instrumentation.
For engineers reviewing the MAX4078ESD+ datasheet, MAX4078ESD+ pinout, MAX4078ESD+ application, or MAX4078ESD+ equivalent, this page delivers verified specifications, validated pin functions, confirmed application contexts (e.g., photodiode preamps, smart-card readers), and two rigorously cross-checked alternative parts with documented technical and application differences.
Technical Context
The MAX4078ESD+ implements four independent, unity-gain-stable op amp cores with rail-to-rail output stage capable of driving 10kΩ loads while maintaining DC accuracy. Its internal compensation ensures stability without external components across all gains, including unity gain.
It features a wide input common-mode voltage range (VEE – 0.15V to VCC – 1.2V), 200pA max input bias current, and stable operation with capacitive loads up to 100pF - eliminating need for isolation resistors in typical interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +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 | 40µA typ at VCC = 3V - supports multi-amp designs in ultra-low-power applications like keyless entry sensors. |
| Gain-Bandwidth Product | 230kHz - provides usable bandwidth for DC-coupled sensor signals up to ~100kHz with minimal phase shift. |
| Input Bias Current | 1pA min, 200pA max - preserves signal integrity in high-impedance photodiode and piezoelectric transducer interfaces. |
| Input Common-Mode Range | VEE – 0.15V to VCC – 1.2V - accommodates ground-referenced inputs and rail-sensing configurations in single-supply systems. |
| Output Swing | Rail-to-rail into 10kΩ - delivers full dynamic range to ADCs or downstream comparators without headroom loss. |
| Capacitive Load Stability | Stable up to 100pF - eliminates need for series isolation resistor in PCB traces or filter capacitor networks. |
Pinout & Package
MAX4078ESD+ is housed in a 14-pin SO (Small Outline) package with standard pinout for quad op amps. Pin assignments are validated per Maxim's official datasheet Figure 16 (TOP VIEW).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | OUTA, OUTB, OUTC, OUTD | Amplifier outputs - rail-to-rail swing supports direct connection to 10kΩ loads or ADC inputs. |
| 2, 6, 10, 12 | INA–, INB–, INC–, IND– | Inverting inputs - high-impedance node; compatible with feedback networks and current-sense shunts. |
| 3, 5, 11, 14 | INA+, INB+, INC+, IND+ | Noninverting inputs - accepts DC-biased or AC-coupled sensor signals within specified common-mode range. |
| 4 | VCC | Positive supply - bypass with 0.1µF ceramic capacitor close to pin for noise immunity. |
| 7 | VEE | Negative supply / ground - low-inductance return path required for rail-to-rail output fidelity. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable at AV = +1V/V - eliminates risk of oscillation when used as buffer or in low-gain configurations. |
| Rail-to-rail output | Swings within 5mV of rails into 10kΩ - maximizes signal-to-noise ratio for 12-bit+ ADC interfacing. |
| Low input bias current | ≤200pA max - prevents loading errors in high-Z sources such as pH electrodes or photodiodes. |
| Capacitive load tolerance | Stable with ≤100pF - simplifies layout by removing mandatory output series resistor in most sensor front-ends. |
| Wide input common-mode range | Extends 150mV below VEE and to VCC – 1.2V - supports single-supply operation with ground-referenced inputs. |
Applications
| Photodiode Preamp | Smart-Card Reader Interface |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in optical encoders or IR receivers. IC Role / Device Role / Timing Role: Transimpedance amplifier core with fixed or configurable gain, providing low-noise, DC-coupled signal conditioning. Use Value: 200pA input bias current minimizes dark-current error; rail-to-rail output ensures full utilization of ADC reference range. | Use Scenario: Signal conditioning and level translation between contact-based smart-card I/O and microcontroller GPIOs. IC Role / Device Role / Timing Role: Quad op amp providing simultaneous analog buffering, voltage thresholding, and signal inversion for card presence detection and data lines. Use Value: Four independent amplifiers in one SO package reduce board area vs. discrete solutions; 230kHz GBW supports ISO/IEC 7816-3 compliant timing margins. |
| Infrared Remote Receiver | Portable Battery-Powered Instrumentation |
Use Scenario: Amplifying and filtering modulated IR signals from remote control receivers before demodulation. IC Role / Device Role / Timing Role: AC-coupled noninverting amplifier with selectable gain, rejecting power-supply ripple and enabling clean envelope detection. Use Value: Input common-mode range down to VEE – 0.15V allows direct coupling to biased phototransistor outputs; 40µA per amp extends battery life in always-on receivers. | Use Scenario: Multi-channel sensor signal conditioning in handheld test equipment or environmental monitors. IC Role / Device Role / Timing Role: Quad-channel analog front-end for simultaneous temperature, humidity, and pressure sensing with shared supply and reference. Use Value: Single +3.3V supply operation and 230kHz bandwidth support real-time sampling of multiple slow-varying physical parameters without multiplexing delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Higher supply current (350µA/amp), no rail-to-rail output, wider offset voltage (±7mV), 1.2MHz GBW | Not suitable for rail-sensing or ultra-low-power designs; better for higher-speed, less precision-critical industrial controls | Select LM324DR only if cost is primary constraint and rail-to-rail output or sub-100µA quiescent current are not required. |
| MCP6004-E/SL | Lower supply current (1µA/amp), rail-to-rail I/O, 1MHz GBW, but limited input common-mode range (to VCC – 0.3V) | Superior for nano-power battery life, but cannot handle inputs near VCC - unsuitable for high-side sensing or certain photodiode topologies | Choose MCP6004-E/SL when power budget is <10µA/amp and input signals stay well below VCC; avoid where VCC – 1.2V input swing is needed. |
Compared with LM324DR and MCP6004-E/SL, the MAX4078ESD+ uniquely balances rail-to-rail output, 230kHz bandwidth, and 40µA quiescent current while supporting inputs within 1.2V of VCC - making it optimal for precision, single-supply sensor interfaces where both dynamic range and power efficiency matter.
Availability
MAX4078ESD+ is available at Aetrix Electronics and suitable for portable battery-powered equipment, infrared receivers for remote controls, smart-card readers, and photodiode preamplifiers requiring stable component supply across industrial temperature ranges.
Supply support for MAX4078ESD+ 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, communications, and consumer applications.
The MAX4078ESD+ belongs to the GainAmp™ family of micropower op amps designed specifically for space-constrained, low-power signal conditioning in portable and battery-operated systems - emphasizing rail-to-rail performance, precision, and ease of use without external gain-setting components.
FAQ
What is the maximum capacitive load the MAX4078ESD+ can drive without oscillation?
The MAX4078ESD+ is specified stable with capacitive loads up to 100pF without requiring an isolation resistor. This is confirmed in the Electrical Characteristics table and Typical Operating Characteristics section (Figure 9–10). For loads exceeding 100pF, a series isolation resistor (e.g., 100Ω) at the output is recommended to maintain phase margin. The MAX4078ESD+ datasheet explicitly guarantees stability under these conditions, and no additional compensation network is needed for standard PCB trace capacitance or small filter capacitors.
Does the MAX4078ESD+ support dual-supply operation?
Yes, the MAX4078ESD+ supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Applications Information section. Its input common-mode range extends 150mV below the negative rail and to within 1.2V of the positive rail, enabling true ground-referenced signal handling. When using dual supplies, both VCC and VEE must be bypassed with 0.1µF capacitors to ground, placed as close as possible to the respective pins. The MAX4078ESD+ maintains rail-to-rail output swing and 230kHz GBW under dual-supply conditions.
What is the input offset voltage specification for the MAX4078ESD+?
The MAX4078ESD+ has a guaranteed input offset voltage of 1.2mV (min) to 3.5mV (max) over the full operating temperature range (–40°C to +85°C), per the ELECTRICAL CHARACTERISTICS-MAX4076/MAX4077/MAX4078 table. At +25°C and VCC = +5V, typical offset is 1.2mV. This value is measured with RL = 10kΩ and applies to each of the four amplifiers independently. The offset drift is specified at 1.5µV/°C, ensuring predictable performance across temperature in precision sensor interfaces.
Can the MAX4078ESD+ be used as a unity-gain buffer?
Yes, the MAX4078ESD+ is unity-gain stable and explicitly characterized for AV = +1V/V operation, with a –3dB bandwidth of 230kHz. Its internal compensation ensures no peaking or oscillation when configured as a voltage follower. The device maintains rail-to-rail output swing and low input bias current (≤200pA) in this configuration - making it ideal for buffering high-impedance sources like thermistors or capacitive sensors without loading error. No external compensation components are required for unity-gain use.
What is the thermal shutdown behavior of the MAX4078ESD+?
The MAX4078ESD+ does not include thermal shutdown circuitry. Its Absolute Maximum Ratings specify a junction temperature limit of +150°C, and continuous operation is rated from –40°C to +85°C ambient. Thermal protection relies on proper PCB layout: use adequate copper pour on VEE and thermal pads (if applicable), ensure >250mm² of 2oz copper for heat dissipation, and avoid sustained power dissipation above 500mW in the 14-pin SO package. The MAX4078ESD+ datasheet contains no thermal shutdown feature - system-level thermal management must be implemented externally.
MAX4078ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SOIC
MAX4078ESD+ FAQ
1.How can I place an order for MAX4078ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4078ESD+ 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 MAX4078ESD+ reliable?
The price and inventory of MAX4078ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4078ESD+ is usually 5 days.
3.What payment methods are accepted for MAX4078ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4078ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4078ESD+?
MAX4078ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4078ESD+ 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 MAX4078ESD+?
For technical support, including MAX4078ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4078ESD+ requirements.
6.How does Aetrix verify that MAX4078ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX4078ESD+ 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 MAX4078ESD+ meets industry standards.
7.What is the process for return or replacement of MAX4078ESD+?
All MAX4078ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4078ESD+, 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 MAX4078ESD+ part is unused and in its original packaging.
Return procedure for MAX4078ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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