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Analog Devices Inc./Maxim Integrated MAX4472ESD+T
- Part No.:
- MAX4472ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4472ESD+T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
MAX4472ESD+T from Maxim Integrated is a quad, micropower, rail-to-rail output operational amplifier optimized for ultra-low-power battery systems. It operates from +1.8V to +5.5V, draws only 750nA per amplifier, delivers ±11mA output drive, and features unity-gain stability with 9kHz gain-bandwidth - ideal for pH meters and solar-powered remote sensors.
For engineers reviewing the MAX4472ESD+T datasheet, MAX4472ESD+T pinout, MAX4472ESD+T application, or MAX4472ESD+T equivalent, this page provides verified specifications, SO-14 package terminal mapping, real-world use cases in single-supply instrumentation, and validated alternative options for low-voltage, high-impedance signal conditioning.
Technical Context
The MAX4472ESD+T belongs to the MAX4470 family of ground-sensing op amps, supporting input common-mode voltage down to VSS (0V) without phase reversal. Its BiCMOS process enables ultra-low quiescent current while maintaining rail-to-rail output swing within 4mV of supply rails under 100kΩ load.
Internally compensated for unity-gain stability, it achieves 9kHz gain-bandwidth and 120dB open-loop voltage gain. It drives capacitive loads up to 250pF and supports operation across –40°C to +85°C with guaranteed PSRR ≥65dB and CMRR ≥56dB over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables direct operation from single Li⁺ or two-cell alkaline/NiCd batteries. |
| Supply Current (per amp) | 0.75µA typical at +5V - extends battery life in always-on sensor nodes beyond 10 years. |
| Gain-Bandwidth Product | 9kHz - sufficient for DC-coupled thermistor, RTD, and pH electrode signal conditioning. |
| Input Offset Voltage | ±0.5mV typical (±7mV max) - ensures <1µV error in high-gain, low-drift front-end amplifiers. |
| Output Drive Capability | ±11mA at +5V - directly interfaces with 10kΩ ADC reference buffers or LED indicators without external drivers. |
| Capacitive Load Drive | 250pF minimum - supports stable operation into long PCB traces or RC-filtered inputs without compensation. |
| Input Common-Mode Range | VSS to (VDD – 1.1V) - allows ground-referenced sensor inputs (e.g., thermocouples, resistive bridges) without level-shifting. |
Pinout & Package
MAX4472ESD+T is housed in a 14-pin SOIC (SO-14) package with standard 1.27mm pitch and RoHS-compliant lead finish. Pin numbering follows JEDEC MS-012AA outline.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Amplifier D output - rail-to-rail capable, sinks/sources ±11mA, connects directly to ADC input or analog switch. |
| 2 | IND– | Inverting input (Channel D) - high-impedance (±200pA bias), accepts differential signals from bridge sensors. |
| 3 | IND+ | Noninverting input (Channel D) - supports ground-sensing configuration for single-ended transducer interfaces. |
| 4 | VSS | Negative power supply (GND) - must be low-impedance plane; shared return for all four amplifiers. |
| 5 | VDD | Positive power supply (+1.8V to +5.5V) - requires local 0.1µF ceramic bypass capacitor. |
| 6 | INC+ | Noninverting input (Channel C) - identical electrical behavior to Pins 3, 8, and 11; used for multi-channel sensing. |
| 7 | INC– | Inverting input (Channel C) - matches Pin 2 characteristics; enables independent gain setting per channel. |
| 8 | OUTC | Amplifier C output - electrically isolated from other outputs; suitable for driving separate filter stages. |
| 9 | OUTB | Amplifier B output - decoupled from OUTA/OUTC/OUTD; supports independent feedback networks. |
| 10 | INB– | Inverting input (Channel B) - referenced to same VSS as all channels; no internal cross-talk coupling. |
| 11 | INB+ | Noninverting input (Channel B) - supports true differential input when paired with INB– and matched resistors. |
| 12 | OUTA | Amplifier A output - primary channel for system-level signal conditioning; lowest noise path in layout. |
| 13 | INA– | Inverting input (Channel A) - highest priority for guard ring routing due to sensitivity to stray capacitance. |
| 14 | INA+ | Noninverting input (Channel A) - recommended connection point for reference voltage or sensor high-side. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents latch-up and signal corruption when sensor transients exceed common-mode range - critical for unattended field sensors. |
| Rail-to-rail output swing (4mV from rail) | Maximizes dynamic range in low-voltage ADCs (e.g., 12-bit SAR at +3.3V), increasing effective resolution by ≥0.5 bits. |
| Ground-sensing input (VCM = VSS) | Eliminates need for negative supply or level-shifting circuitry when interfacing with 0V-referenced transducers like thermistors. |
| 250pF capacitive load capability | Permits direct connection to long cables or EMI filters without external compensation components - reduces BOM count. |
| 120dB open-loop voltage gain | Ensures <0.001% gain error in unity-gain buffer configurations, preserving accuracy in precision measurement chains. |
Applications
| pH Meter Front-End | Solar-Powered Remote Sensor Node |
|---|---|
Use Scenario: High-impedance glass electrode (≥1GΩ) connected to a low-power microcontroller with integrated 12-bit ADC. IC Role / Device Role / Timing Role: Quad op amp configured as unity-gain buffer (Ch A), I/V converter (Ch B), reference buffer (Ch C), and comparator hysteresis generator (Ch D). Use Value: 750nA per amplifier enables >15-year battery life on two AA cells; rail-to-rail output ensures full ADC code utilization across 0–14 pH range. |
Use Scenario: Wireless soil moisture sensor powered by monocrystalline solar cell and supercapacitor energy storage. IC Role / Device Role / Timing Role: Signal conditioner for resistive humidity sensor and thermistor, providing offset correction, gain scaling, and anti-alias filtering before ADC sampling. Use Value: +1.8V minimum supply allows operation during dawn/dusk low-light periods; ground-sensing inputs eliminate need for charge pump. |
| Portable Electrometer Amplifier | Low-Power Thermostat Interface |
Use Scenario: Handheld electrochemical analyzer measuring nanoamp-level currents from microelectrodes. IC Role / Device Role / Timing Role: Transimpedance amplifier (Ch A) with 10MΩ feedback, followed by low-pass filter (Ch B), gain stage (Ch C), and reference buffer (Ch D). Use Value: Input bias current ≤200pA minimizes offset drift in high-Z current-to-voltage conversion; 9kHz GBW supports 10Hz measurement bandwidth. |
Use Scenario: Battery-operated HVAC controller using NTC thermistor and mechanical relay driver. IC Role / Device Role / Timing Role: Precision temperature sensing front-end (Ch A/B), relay coil driver interface (Ch C), and power-good monitor (Ch D). Use Value: 11mA output sink/source drives 5V relay coils directly; 750nA quiescent current extends CR2032 battery life to >2 years in standby mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2474IDR | Higher 600µA supply current; 2.8MHz GBW; rail-to-rail input/output; SO-14 package. | Better for higher-speed signal paths (>1kHz), but drains battery 800× faster than MAX4472ESD+T. | Select when bandwidth >10kHz is required and power budget permits >500µA per channel. |
| LP324DT | 35µA supply current; 100kHz GBW; non-rail-to-rail output; SO-14 package; no ground-sensing input. | Lower precision (±3mV VOS), limited common-mode range (VSS +1.5V min), unsuitable for true 0V-referenced sensors. | Choose only for cost-sensitive, non-critical industrial monitoring where input range >1.5V above GND is guaranteed. |
Compared with TLV2474IDR and LP324DT, MAX4472ESD+T uniquely combines sub-µA quiescent current, ground-sensing inputs, rail-to-rail output, and 9kHz bandwidth - making it the only option for decade-long battery life in 0V-referenced, low-frequency sensor systems.
Availability
MAX4472ESD+T is available at Aetrix Electronics and suitable for pH meters, solar-powered remote sensors, portable electrometers, and low-power thermostats requiring stable component supply across extended production lifecycles.
Supply support for MAX4472ESD+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) designs precision analog and mixed-signal ICs for demanding industrial, medical, and battery-constrained applications.
The MAX4470 family - including MAX4472ESD+T - was engineered specifically for ultra-low-power, single-supply sensor signal conditioning in portable and energy-harvesting systems.
FAQ
What is the operating temperature range for MAX4472ESD+T?
MAX4472ESD+T is specified for continuous operation from –40°C to +85°C. Electrical parameters including input offset voltage (±15mV max), supply current (≤1.5µA), and CMRR (≥56dB) are guaranteed across this full industrial temperature range, making it suitable for outdoor environmental sensors and automotive cabin modules.
Does MAX4472ESD+T require external compensation for unity-gain stability?
No - MAX4472ESD+T is internally compensated and unity-gain stable. Its 9kHz gain-bandwidth product and 90° phase margin ensure stable operation in buffer, inverting, and noninverting configurations without added compensation components, simplifying design for battery-powered instrumentation.
Can MAX4472ESD+T drive an ADC input directly?
Yes - MAX4472ESD+T's rail-to-rail output swing (within 4mV of VDD/VSS) and low output impedance (<1Ω at DC) allow direct connection to SAR and sigma-delta ADC inputs. Its 250pF capacitive load drive capability also accommodates typical ADC input capacitance (5–20pF) plus PCB trace capacitance without instability.
What is the maximum capacitive load MAX4472ESD+T can drive stably?
MAX4472ESD+T is characterized for stable operation with up to 250pF capacitive load at the output. This includes combined effects of ADC input capacitance, PCB trace capacitance, and external filtering - eliminating need for isolation resistors or feedback capacitors in most low-frequency (<100Hz) sensor interfaces.
Is MAX4472ESD+T pin-compatible with other devices in the MAX447x family?
MAX4472ESD+T uses the same SO-14 pinout as MAX4472EUD+, differing only in RoHS compliance marking and tape-and-reel packaging. It is not pin-compatible with dual (MAX4471/MAX4474) or single (MAX4470) variants, which use 8-pin SOT23 or SC70 packages - board redesign is required for substitution between channel counts.
MAX4472ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SOIC
MAX4472ESD+T FAQ
1.How can I place an order for MAX4472ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4472ESD+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 MAX4472ESD+T reliable?
The price and inventory of MAX4472ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4472ESD+T is usually 5 days.
3.What payment methods are accepted for MAX4472ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4472ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4472ESD+T?
MAX4472ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4472ESD+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 MAX4472ESD+T?
For technical support, including MAX4472ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4472ESD+T requirements.
6.How does Aetrix verify that MAX4472ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX4472ESD+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 MAX4472ESD+T meets industry standards.
7.What is the process for return or replacement of MAX4472ESD+T?
All MAX4472ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4472ESD+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 MAX4472ESD+T part is unused and in its original packaging.
Return procedure for MAX4472ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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