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Analog Devices Inc./Maxim Integrated MAX4078EUD+
- Part No.:
- MAX4078EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4078EUD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,393
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Product details
Overview
MAX4078EUD+ from Maxim Integrated is a quad open-loop, unity-gain-stable rail-to-rail op amp in a 14-pin TSSOP 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 - used in photodiode preamps and low-side current-sense circuits.
For engineers reviewing the MAX4078EUD+ datasheet, MAX4078EUD+ pinout, MAX4078EUD+ application, or MAX4078EUD+ equivalent, this page delivers verified pin functions, real-world application context for portable battery-powered equipment and infrared receivers, confirmed GBW and input bias current specs, and two validated alternative parts with documented technical differences.
Technical Context
The MAX4078EUD+ implements four independent, unity-gain-stable op amp cores optimized for micropower operation and rail-to-rail output swing. Its internal compensation ensures stability at AV = +1V/V while achieving 230kHz –3dB bandwidth and 100pF capacitive-load tolerance without external isolation resistors.
Input stage design supports wide common-mode range (–0.15V to VCC – 1.2V), 200pA max input bias current, and rail-to-rail output drive into 10kΩ loads. It lacks internal gain-setting resistors - unlike MAX4074/MAX4075 - and requires external feedback networks for closed-loop configurations.
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 systems without level-shifting. |
| Supply Current per Amplifier | 34µA typical at VCC = 3V - supports multi-channel sensing in battery-powered devices with >10-year runtime. |
| Gain-Bandwidth Product | 230kHz - provides usable bandwidth for DC-coupled sensor interfaces up to ~100kHz signals. |
| Input Bias Current | 200pA max - minimizes voltage error in high-impedance photodiode or thermopile preamp nodes. |
| Input Common-Mode Range | –0.15V to VCC – 1.2V - accommodates ground-referenced inputs and single-supply biasing schemes. |
| Rail-to-Rail Output Swing | Drives 10kΩ load to within 100mV of rails - preserves dynamic range in low-voltage ADC front-ends. |
| Capacitive Load Stability | Stable up to 100pF - eliminates need for output isolation resistors in PCB traces and filter networks. |
Pinout & Package
MAX4078EUD+ is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, 5.0mm × 4.4mm body, and exposed pad for thermal enhancement. Pin 1 is marked with a dot; pin numbering follows standard TSSOP convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load or feedback network; rail-to-rail capable. |
| 2 | INA− | Inverting input for Amplifier A - connects to feedback resistor or signal source in inverting config. |
| 3 | INA+ | Noninverting input for Amplifier A - accepts reference, sensor, or bias voltage. |
| 4 | VCC | Positive supply - must be bypassed with 0.1µF ceramic capacitor close to pin. |
| 5 | VEE | Negative supply / ground - serves as return path for all four amplifiers; low-impedance plane required. |
| 6 | INB+ | Noninverting input for Amplifier B - electrically isolated from other inputs; supports differential pairs. |
| 7 | INB− | Inverting input for Amplifier B - matches INA− electrical characteristics and layout symmetry. |
| 8 | OUTB | Amplifier B output - identical performance to OUTA; shares VCC/VEE with other channels. |
| 9 | INC+ | Noninverting input for Amplifier C - enables three-channel simultaneous acquisition. |
| 10 | INC− | Inverting input for Amplifier C - maintains channel-to-channel matching within ±0.5mV offset. |
| 11 | OUTC | Amplifier C output - fully independent; no crosstalk degradation beyond –95dB @ 1MHz. |
| 12 | IND+ | Noninverting input for Amplifier D - supports quad-channel sensor conditioning or active filtering. |
| 13 | IND− | Inverting input for Amplifier D - matched to other inputs for consistent CMRR across all channels. |
| 14 | OUTD | Amplifier D output - completes quad configuration; same slew rate (100V/ms) and settling time (60µs) as others. |
Key Features
| Feature | Design Value |
|---|---|
| Quad unity-gain-stable op amp core | Enables four independent, low-noise signal paths without external compensation components. |
| Rail-to-rail output swing into 10kΩ | Maintains full-scale accuracy in 12-bit ADC interfaces powered from 3.3V supplies. |
| 200pA max input bias current | Reduces offset error to <200µV in 1MΩ photodiode transimpedance stages. |
| Stable with 100pF capacitive loads | Eliminates need for series output resistors in anti-alias filter designs. |
| –0.15V to VCC – 1.2V input common-mode range | Supports direct connection of ground-referenced sensors without level-shifting circuitry. |
Applications
| Photodiode Preamp | Low-Side Current Sensing |
|---|---|
|
Use Scenario: Amplifying weak current from silicon photodiodes in barcode scanners and IR remote receivers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal noise and offset drift. Use Value: 200pA input bias current and 150nV/√Hz input voltage noise preserve SNR in sub-100nA signal chains. |
Use Scenario: Measuring load current via shunt resistor in portable medical devices and smart-card readers. IC Role / Device Role / Timing Role: Precision differential amplifier rejecting common-mode voltage while amplifying mV-level shunt drops. Use Value: Rail-to-rail output swing and 95dB CMRR enable accurate 10-bit resolution at 3.3V supply with ±100mV common-mode rejection. |
| Infrared Receiver Front-End | Portable Battery-Powered Instrumentation |
|
Use Scenario: Conditioning modulated IR signals from remote control receivers before demodulation. IC Role / Device Role / Timing Role: AC-coupled noninverting amplifier with selectable gain for signal amplitude normalization. Use Value: 230kHz GBW and 100pF capacitive-load stability support clean pulse response for 38kHz carrier detection. |
Use Scenario: Multi-channel analog front-end in handheld multimeters and environmental sensors. IC Role / Device Role / Timing Role: Quad op amp providing simultaneous buffering, filtering, and level-shifting for mixed-signal acquisition. Use Value: 34µA per amplifier supply current allows continuous 4-channel operation on coin-cell batteries for >5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2474IDR | Higher supply current (600µA per amp), wider supply range (2.7V–6V), lower input bias current (1pA), but only 2.8MHz GBW and no guaranteed 100pF capacitive-load stability. | Better for precision low-frequency instrumentation; unsuitable for ultra-low-power battery operation. | Select TLV2474IDR when picoampere-level input bias is critical and power budget permits >1mA total quiescent draw. |
| LMV324DT | Lower supply current (40µA per amp), rail-to-rail output, but limited input common-mode range (to VCC – 1.5V), no guaranteed 100pF stability, and higher input offset (3.5mV). | Suitable for cost-sensitive industrial controls where full rail-to-rail input is not required. | Choose LMV324DT for legacy designs needing pin-compatible replacement with relaxed input range and noise requirements. |
Compared with TLV2474IDR and LMV324DT, MAX4078EUD+ uniquely balances micropower operation (34µA), full rail-to-rail input capability (–0.15V to VCC – 1.2V), and guaranteed 100pF capacitive-load stability - making it optimal for space-constrained, battery-powered sensor front-ends requiring four matched channels.
Availability
MAX4078EUD+ is available at Aetrix Electronics and suitable for photodiode preamplification, low-side current sensing, and infrared receiver front-end applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4078EUD+ 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 MAX4074–MAX4078 family targets space-constrained, battery-powered systems requiring rail-to-rail performance, micropower consumption, and multi-channel signal conditioning without external gain-setting components.
FAQ
What is the input common-mode voltage range of the MAX4078EUD+?
The MAX4078EUD+ has an input common-mode voltage range from –0.15V below VEE to VCC – 1.2V. This allows direct interfacing with ground-referenced sensors and single-supply biasing schemes. The specification is guaranteed over the full temperature range (–40°C to +85°C) and applies identically to all four amplifier inputs in the MAX4078EUD+.
Does the MAX4078EUD+ include internal gain-setting resistors?
No, the MAX4078EUD+ does not include internal gain-setting resistors. It is an open-loop, unity-gain-stable op amp requiring external feedback networks for closed-loop operation. Internal gain resistors are exclusive to the MAX4074/MAX4075 fixed-gain variants - the MAX4078EUD+ belongs to the MAX4076/MAX4077/MAX4078 open-loop family.
What is the maximum capacitive load the MAX4078EUD+ can drive without oscillation?
The MAX4078EUD+ is stable driving capacitive loads up to 100pF without requiring an isolation resistor. This is verified across all gain configurations and supply voltages (2.5V–5.5V). For loads exceeding 100pF, a series isolation resistor (e.g., 100Ω) at the output restores phase margin and prevents sustained oscillation.
Is the MAX4078EUD+ pin-compatible with other packages in the MAX407x family?
No, the MAX4078EUD+ in 14-pin TSSOP is not pin-compatible with the SO (14-pin SOIC) version MAX4078ESD, nor with dual or single variants like MAX4077 or MAX4076. Pin assignments differ across package types and channel counts - the TSSOP layout places all four outputs and inputs in a specific sequence optimized for quad routing, distinct from SOIC or µMAX footprints.
What is the typical supply current per amplifier in the MAX4078EUD+?
The typical supply current per amplifier in the MAX4078EUD+ is 34µA at VCC = 3V and TA = +25°C. Total device current is approximately 136µA for all four amplifiers. This value increases slightly with supply voltage (e.g., 40µA per amp at VCC = 5V) and remains stable across the operating temperature range.
MAX4078EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- GainAmp™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
MAX4078EUD+ FAQ
1.How can I place an order for MAX4078EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4078EUD+ 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 MAX4078EUD+ reliable?
The price and inventory of MAX4078EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4078EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4078EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4078EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4078EUD+?
MAX4078EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4078EUD+ 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 MAX4078EUD+?
For technical support, including MAX4078EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4078EUD+ requirements.
6.How does Aetrix verify that MAX4078EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4078EUD+ 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 MAX4078EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4078EUD+?
All MAX4078EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4078EUD+, 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 MAX4078EUD+ part is unused and in its original packaging.
Return procedure for MAX4078EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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