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Analog Devices Inc./Maxim Integrated MAX4472EUD+T
- Part No.:
- MAX4472EUD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4472EUD+T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
MAX4472EUD+T from Maxim Integrated is a quad micropower rail-to-rail operational amplifier designed for ultra-low-power sensor signal conditioning and battery-powered instrumentation. It operates from a single +1.8V to +5.5V supply, draws only 750nA per amplifier, features ground-sensing inputs, delivers rail-to-rail output swing within 4mV of rails (at 100kΩ load), and is unity-gain stable - making it ideal for pH meters, remote sensor badges, and solar-powered monitoring systems.
For engineers reviewing the MAX4472EUD+T datasheet, MAX4472EUD+T pinout, MAX4472EUD+T application, or MAX4472EUD+T equivalent, this page provides verified specifications, TSSOP-14 package layout, real-world use cases in low-voltage analog front-ends, and validated alternative op amps with documented gain-bandwidth and stability differences.
Technical Context
The MAX4472EUD+T belongs to the MAX4470 family of BiCMOS micropower op amps, featuring input common-mode range extending to VSS (ground-sensing) and rail-to-rail output stage capable of sourcing/sinking ±11mA at +5V. Its internal compensation ensures unity-gain stability across all four channels.
It delivers a 9kHz gain-bandwidth product and 120dB open-loop voltage gain while maintaining low input offset voltage (±0.5mV typ), low input bias current (±200pA typ), and high PSRR (90dB typ) - enabling precision DC-coupled amplification in high-impedance, low-noise sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports single-cell Li+, two-cell alkaline/NiCd, and energy-harvesting power sources without regulation. |
| Supply Current (per amp) | 0.75µA typ - enables multi-year operation in coin-cell–powered devices like wireless sensor nodes. |
| Gain-Bandwidth Product | 9kHz - suitable for DC to low-frequency (<1kHz) signal conditioning (e.g., thermistor, RTD, pH electrode outputs). |
| Input Offset Voltage | ±0.5mV typ - minimizes DC error in precision gain stages without trimming or auto-zero circuitry. |
| Output Swing (RL = 100kΩ) | VSS + 1mV to VDD − 1mV - preserves full dynamic range in 16-bit ADC interfaces with minimal headroom loss. |
| Capacitive Load Drive | 250pF min - allows direct driving of ADC input capacitors or long PCB traces without external isolation resistors. |
| Common-Mode Input Range | VSS to (VDD − 1.1V) - enables direct sensing of ground-referenced signals (e.g., current-sense shunts, thermocouples). |
Pinout & Package
MAX4472EUD+T is housed in a 14-pin TSSOP package (RoHS-compliant, lead-free). The device contains four independent amplifiers, each with noninverting/inverting inputs and output pins arranged for compact routing in multi-channel analog front-ends.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | IN− (A/B/C/D) | Inverting input for each of the four amplifiers - accepts differential or single-ended configurations with ground-referenced common-mode range. |
| 2, 6, 10, 12 | IN+ (A/B/C/D) | Noninverting input for each amplifier - optimized for high-impedance sensor connections (e.g., pH electrodes, piezoresistive sensors). |
| 3, 7, 8, 14 | OUT (A/B/C/D) | Amplifier output - rail-to-rail swing enables full utilization of ADC reference voltage without level-shifting. |
| 4 | VSS | Negative supply pin - shared ground reference for all four amplifiers; must be low-impedance for noise immunity. |
| 11 | VDD | Positive supply pin - requires local 0.1µF ceramic bypass capacitor to suppress supply noise and ensure stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 750nA supply current per amplifier | Enables >10-year battery life in coin-cell–powered IoT sensor nodes operating at 1Hz sampling rate. |
| Rail-to-rail output with 4mV rail margin (100kΩ load) | Maximizes signal-to-noise ratio in 12–16-bit SAR ADCs by preserving full-scale input range. |
| Ground-sensing input common-mode range | Allows direct connection to shunt-based current monitors or grounded thermocouples without level-shifting circuitry. |
| No phase reversal on overdriven inputs | Prevents latch-up or erroneous output states during transient overload conditions in safety-critical sensor paths. |
| Unity-gain stable architecture | Eliminates need for external compensation components in buffer, gain-of-1, or low-gain configurations. |
Applications
| pH Meter Front-End | Remote Sensor Badge |
|---|---|
|
Use Scenario: Amplifying high-impedance mV-level output from glass pH electrodes in portable field testers. IC Role / Device Role / Timing Role: Quad op amp configured as three-channel buffer (for reference, temperature, and pH) plus one gain stage with filtering. Use Value: Ground-sensing inputs accept electrode's negative terminal directly; rail-to-rail output drives 16-bit ADC without clipping at low supply voltages. |
Use Scenario: Signal conditioning for ambient light, temperature, and humidity sensors in maintenance-free asset trackers. IC Role / Device Role / Timing Role: Four independent amplifiers condition each sensor's analog output prior to multiplexed ADC sampling. Use Value: 750nA per amplifier extends CR2032 battery life beyond 5 years at 10-second wake-up intervals. |
| Solar-Powered Environmental Monitor | Thermostat Analog Front-End |
|
Use Scenario: Low-power amplification of thermistor and CO₂ sensor outputs in off-grid weather stations powered by small PV panels. IC Role / Device Role / Timing Role: Quad amplifier used for biasing, buffering, and gain-setting across multiple passive sensors. Use Value: Operates down to +1.8V, enabling direct connection to supercapacitor storage without LDO - reducing system BOM count. |
Use Scenario: Precision amplification of NTC thermistor voltage dividers in battery-operated smart thermostats. IC Role / Device Role / Timing Role: One amplifier buffers thermistor divider; others condition auxiliary inputs (e.g., occupancy IR, humidity). Use Value: ±0.5mV input offset ensures <±0.1°C measurement accuracy over −10°C to +50°C without calibration. |
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 |
|---|---|---|---|
| TLV8544IPWR | Higher 500nA supply current per amp, 10kHz GBW, same TSSOP-14 package, but no guaranteed ground-sensing input. | Not recommended for true ground-referenced shunt current sensing due to limited VCM lower bound (VSS + 0.1V). | Select when higher bandwidth is needed and input common-mode range above ground is acceptable. |
| LPV821DRXT | Lower 650nA supply current, 10kHz GBW, SC70-5 package (single channel), requires external gain-setting resistors for multi-channel use. | Requires four separate packages and PCB area vs. single MAX4472EUD+T - increases layout complexity and cost in quad-channel designs. | Select for ultra-low-current single-channel applications where space permits discrete integration. |
Compared with TLV8544IPWR and LPV821DRXT, MAX4472EUD+T uniquely combines quad-channel integration, guaranteed ground-sensing inputs, and 9kHz bandwidth in a single TSSOP-14 package - optimizing board area and precision in multi-sensor battery-powered systems.
Availability
MAX4472EUD+T is available at Aetrix Electronics and suitable for pH meters, remote sensor badges, and solar-powered environmental monitors requiring stable component supply with long-term lifecycle support.
Supply support for MAX4472EUD+T 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 MAX4472EUD+T belongs to Maxim's micropower op amp product line, engineered specifically for ultra-low-power, high-precision analog signal conditioning in battery-constrained and energy-harvesting systems.
FAQ
What is the operating temperature range for MAX4472EUD+T?
The MAX4472EUD+T is specified for operation from −40°C to +85°C. This industrial-grade temperature range ensures reliable performance in outdoor environmental sensors, building automation thermostats, and portable field test equipment where ambient conditions vary widely. All electrical characteristics in the datasheet are guaranteed across this full range.
Is MAX4472EUD+T unity-gain stable?
Yes, MAX4472EUD+T is unity-gain stable. As confirmed in the datasheet Selector Guide and Applications Information section, the MAX4472 (quad version of the MAX4470 family) is internally compensated for stable operation at closed-loop gains ≥1V/V. This eliminates the need for external compensation networks in buffer or low-gain configurations.
What package type does MAX4472EUD+T use?
MAX4472EUD+T uses a 14-pin TSSOP package (thin shrink small-outline package), identified in Maxim's ordering information as "U14+1". It is RoHS-compliant, lead-free, and has a standard 0.65mm pin pitch - compatible with automated SMT assembly and reflow processes.
Does MAX4472EUD+T support rail-to-rail input?
MAX4472EUD+T supports rail-to-rail *output*, but its input common-mode range is specified from VSS to (VDD − 1.1V), not full rail-to-rail. However, it *does* feature ground-sensing inputs - meaning the lower bound extends to VSS (0V), enabling direct interface with ground-referenced sensors such as current-shunt monitors and thermocouples.
Can MAX4472EUD+T drive capacitive loads?
Yes, MAX4472EUD+T is characterized to drive up to 250pF capacitive loads without sustained oscillation, as stated in the Electrical Characteristics table. This capability supports direct connection to typical SAR ADC input capacitors (e.g., 10–50pF) and longer PCB traces in compact sensor modules without requiring series isolation resistors.
MAX4472EUD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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+T FAQ
1.How can I place an order for MAX4472EUD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4472EUD+T 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+T reliable?
The price and inventory of MAX4472EUD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4472EUD+T is usually 5 days.
3.What payment methods are accepted for MAX4472EUD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4472EUD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4472EUD+T?
MAX4472EUD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4472EUD+T 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+T?
For technical support, including MAX4472EUD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4472EUD+T requirements.
6.How does Aetrix verify that MAX4472EUD+T is sourced from the original manufacturer or authorized distributors?
All MAX4472EUD+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX4472EUD+T?
All MAX4472EUD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4472EUD+T, 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+T part is unused and in its original packaging.
Return procedure for MAX4472EUD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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