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Analog Devices Inc./Maxim Integrated MAX4472EUD
- Part No.:
- MAX4472EUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4472EUD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,979
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Product details
Overview
MAX4472EUD from Maxim Integrated is a quad, micropower, rail-to-rail output operational amplifier with ground-sensing inputs, operating from +1.8V to +5.5V supply and drawing only 750nA per amplifier. It features 9kHz gain-bandwidth, unity-gain stability, ±5mV input offset voltage (typ), and drives outputs within 4mV of rails under 100kΩ load - ideal for low-power sensor signal conditioning in battery-powered pH meters and remote sensor badges.
For engineers reviewing the MAX4472EUD datasheet, MAX4472EUD pinout, MAX4472EUD application, or MAX4472EUD equivalent, this page delivers verified specifications, TSSOP-14 package layout, real-world use cases in single-cell Li+ systems, and validated alternative op amps for micropower rail-to-rail designs.
Technical Context
The MAX4472EUD belongs to the MAX4470 family of fully compensated, unity-gain stable amplifiers optimized for ultra-low supply current and ground-referenced input operation. Its BiCMOS process enables rail-to-rail output swing while maintaining 120dB open-loop gain and 75dB CMRR over temperature.
It supports capacitive loads up to 250pF without oscillation and delivers ±11mA output current at +5V supply. Input common-mode range extends from VSS to (VDD – 1.1V), enabling direct interfacing with ground-referenced transducers and thermistors in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports single Li+ or dual alkaline/NiCd batteries without regulation. |
| Supply Current per Amplifier | 0.75µA (typ) - enables >10-year battery life in always-on remote sensors. |
| Gain-Bandwidth Product | 9kHz - sufficient for DC–1kHz sensor signal conditioning (e.g., pH, thermistor, electrometer). |
| Input Offset Voltage | ±5mV (max at TA = +25°C) - ensures <0.1% error in 5V full-scale analog front-ends. |
| Output Voltage Swing | Within 4mV of rails (RL = 100kΩ) - maximizes dynamic range in low-voltage ADC interfaces. |
| Input Common-Mode Range | VSS to (VDD – 1.1V) - accepts ground-referenced signals without level-shifting circuitry. |
| Capacitive Load Drive | 250pF (min, no sustained oscillation) - tolerates PCB trace capacitance and filter networks. |
Pinout & Package
MAX4472EUD is supplied in a 14-pin TSSOP package (RoHS-compliant, lead-free). The package measures 5.0mm × 4.4mm × 1.1mm and is optimized for high-density PCB layouts with thermal pad exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Amplifier output for Channel D - rail-to-rail capable, sinks/sources ±11mA at +5V. |
| 2 | IND− | Inverting input for Channel D - part of ground-sensing differential pair with IND+. |
| 3 | IND+ | Noninverting input for Channel D - accepts signals down to VSS (0V) with no phase reversal. |
| 4 | VSS | Negative power-supply terminal - must be connected to system ground for proper biasing. |
| 5 | VDD | Positive power-supply terminal - bypass with 0.1µF ceramic capacitor near pin for stability. |
| 6 | INA+ | Noninverting input for Channel A - identical electrical behavior to IND+ and INC+. |
| 7 | INA− | Inverting input for Channel A - matched with INA+ for precision differential sensing. |
| 8 | OUTA | Amplifier output for Channel A - electrically isolated from other channels; no crosstalk above −100dB. |
| 9 | INC− | Inverting input for Channel C - shares same input stage architecture as all four channels. |
| 10 | INC+ | Noninverting input for Channel C - supports common-mode voltages from VSS to (VDD – 1.1V). |
| 11 | OUTC | Amplifier output for Channel C - independently buffered; no loading effect on OUTA/OUTB/OUTD. |
| 12 | INB+ | Noninverting input for Channel B - pin-compatible across MAX4471/MAX4472/MAX4474 families. |
| 13 | INB− | Inverting input for Channel B - internally matched to INB+ for <12.5pA input offset current. |
| 14 | OUTB | Amplifier output for Channel B - fully specified for 100kΩ load and 250pF capacitive drive. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 4mV of VDD/VSS at 100kΩ load - preserves full ADC input range in 1.8V–3.3V systems. |
| Ground-sensing input | Common-mode range includes VSS (0V) - eliminates need for input biasing resistors in single-supply sensor interfaces. |
| No phase reversal on overdrive | Guaranteed immunity to input overvoltage-induced polarity inversion - critical for robustness in noisy environments. |
| 250pF capacitive load capability | Stable with typical PCB trace + RC filter capacitance - avoids external compensation in most layouts. |
| Ultra-low 750nA supply current | Enables multi-year operation from coin cells (e.g., CR2032) in maintenance-free IoT sensor nodes. |
| Unity-gain stable | Internally compensated for AV ≥ 1 - simplifies design of buffers, active filters, and gain-of-one signal conditioners. |
Applications
| pH Meter Front-End | Remote Sensor Badge |
|---|---|
Use Scenario: Amplifying microamp-level current from glass electrode in handheld or portable pH meters. IC Role / Device Role / Timing Role: Quad op amp configured as transimpedance amplifier (TIA) and reference buffer for high-impedance pH probe interface. Use Value: Ground-sensing inputs accept 0V-referenced electrode signals; rail-to-rail output maximizes resolution into 16-bit SAR ADC. |
Use Scenario: Signal conditioning for ambient light, temperature, and humidity sensors in battery-powered wearable asset tags. IC Role / Device Role / Timing Role: Four independent amplifiers used for sensor biasing, filtering, level-shifting, and ADC driver stages. Use Value: 750nA/quiescent current extends CR2032 battery life beyond 5 years in sleep-dominated duty cycles. |
| Solar-Powered Thermostat | Electrometer Amplifier |
Use Scenario: Low-power analog front-end in energy-harvesting thermostats powered by small solar cells. IC Role / Device Role / Timing Role: Quad amplifier implements thermistor bridge excitation, differential sensing, cold-junction compensation, and DAC output buffering. Use Value: +1.8V minimum supply allows direct connection to supercapacitor storage without LDO - reducing bill-of-materials count. |
Use Scenario: Ultra-high-impedance current-to-voltage conversion for ion-selective electrodes or radiation detectors. IC Role / Device Role / Timing Role: Primary TIA stage with guarded input traces and low input bias current (±200pA typ). Use Value: 200pA input bias current minimizes measurement error in picoamp-range current sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher supply current (420µA/ch), 6.4MHz GBW, wider VDD range (2.7–6V) | Better for higher-speed sensor interfaces (>10kHz), but unsuitable for multi-year battery life | Select when bandwidth >10kHz is required and power budget allows >500× higher quiescent current. |
| LPV821DR | Lower supply current (650nA/ch), 10kHz GBW, rail-to-rail I/O, VDD = 1.6–5.5V | Similar micropower profile but lower CMRR (70dB vs. 75dB) and no guaranteed ground-sensing input | Choose when absolute ground-referenced input is not required and tighter offset drift (<0.15µV/°C) is prioritized. |
Compared with TLV2464IDR and LPV821DR, MAX4472EUD uniquely combines guaranteed ground-sensing inputs, 750nA supply current, and 9kHz bandwidth in a quad TSSOP - making it optimal for long-life, single-supply, low-frequency sensor signal chains where input common-mode range is critical.
Availability
MAX4472EUD is available at Aetrix Electronics and suitable for battery-powered systems, portable instrumentation, and remote sensor active badges requiring stable component supply and long-term lifecycle support.
Supply support for MAX4472EUD 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 demanding industrial, medical, and communications applications.
The MAX4472EUD belongs to Maxim's micropower op amp product line, engineered specifically for ultra-low-power, single-supply sensor signal conditioning in space-constrained, battery-operated devices.
FAQ
What is the operating temperature range for MAX4472EUD?
The MAX4472EUD is specified for operation from –40°C to +85°C. All key parameters - including supply current, input offset voltage, and CMRR - are guaranteed across this industrial temperature range, ensuring reliable performance in outdoor sensor nodes and uncontrolled-environment thermostats.
Does MAX4472EUD require external compensation for unity-gain operation?
No. The MAX4472EUD is internally compensated and unity-gain stable. It does not require external compensation components when used in buffer, follower, or gain-of-one configurations - simplifying layout and reducing component count in compact designs.
Can MAX4472EUD drive a 100kΩ load while maintaining rail-to-rail output swing?
Yes. The MAX4472EUD guarantees output swing within 4mV of VDD and VSS when driving a 100kΩ load, as confirmed in the Electrical Characteristics table. This specification holds across the full supply range (+1.8V to +5.5V) and temperature range (–40°C to +85°C).
Is the input common-mode voltage range of MAX4472EUD truly ground-sensing?
Yes. The MAX4472EUD's input common-mode range extends to VSS (0V), and its datasheet explicitly states "ground-sensing inputs" and "no phase reversal for overdriven inputs." This allows direct connection of 0V-referenced transducers like thermistors and pH electrodes without input biasing networks.
What package type is used for MAX4472EUD and is it RoHS-compliant?
MAX4472EUD uses a 14-pin TSSOP package (package code U14+1), which is RoHS-compliant and lead-free. The "+" suffix in the part number confirms compliance, and the package outline conforms to JEDEC MO-153 standards with 0.65mm pitch and exposed thermal pad.
MAX4472EUD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.002V/µs
- Gain Bandwidth Product:
- 9 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 750nA (x4 Channels)
- Current - Output / Channel:
- 36 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4472EUD FAQ
1.How can I place an order for MAX4472EUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4472EUD 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 MAX4472EUD reliable?
The price and inventory of MAX4472EUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4472EUD is usually 5 days.
3.What payment methods are accepted for MAX4472EUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4472EUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4472EUD?
MAX4472EUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4472EUD 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 MAX4472EUD?
For technical support, including MAX4472EUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4472EUD requirements.
6.How does Aetrix verify that MAX4472EUD is sourced from the original manufacturer or authorized distributors?
All MAX4472EUD 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 MAX4472EUD meets industry standards.
7.What is the process for return or replacement of MAX4472EUD?
All MAX4472EUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4472EUD, 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 MAX4472EUD part is unused and in its original packaging.
Return procedure for MAX4472EUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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