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Analog Devices Inc./Maxim Integrated MAX4488AUT+T
- Part No.:
- MAX4488AUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4488AUT+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX4488AUT+T from Maxim Integrated is a single-channel, decompensated, rail-to-rail output operational amplifier optimized for low-noise, low-distortion signal conditioning in precision analog systems. It delivers 42MHz gain-bandwidth product at AV ≥ +5V/V, 10V/µs slew rate, 4.5nV/√Hz input voltage-noise density, 0.0005% THD+N (1kHz, RL = 1kΩ), and operates from +2.7V to +5.5V single supply - ideal for high-fidelity DAC output amplification and sensor front-ends.
For engineers reviewing the MAX4488AUT+T datasheet, MAX4488AUT+T pinout, MAX4488AUT+T application, or MAX4488AUT+T equivalent, this page provides verified circuit role (precision decompensated op amp), package mapping (SOT23-6), shutdown control behavior, thermal resistance (θJA = 185.5°C/W, single-layer board), and validated alternative options for gain ≥ +5V/V, low-noise, rail-to-rail output applications.
Technical Context
The MAX4488AUT+T uses BiCMOS process technology to achieve high-speed performance with ultra-low noise and distortion. Its internal compensation ensures stability only at closed-loop gains of +5V/V or greater, distinguishing it from unity-gain stable variants like the MAX4475. The device features true rail-to-rail output swing (within 80mV of rails at RL = 1kΩ) and ground-sensing inputs (VCM down to –0.1V), enabling operation in low-voltage, single-supply systems without level-shifting.
It integrates a dedicated SHDN pin that reduces quiescent current to 0.01µA and places the output in high-impedance state - critical for power-gated signal chains. Input bias current is specified at ±1pA (typ), supporting high-impedance source interfacing, while large-signal voltage gain exceeds 110dB across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 42MHz at AV ≥ +5V/V - enables stable closed-loop designs up to 100kHz with >60° phase margin and supports wideband active filters. |
| Slew Rate | 10V/µs - supports fast settling (2µs to 0.01%) for 2V step outputs, suitable for driving multiplexed ADC inputs or fast DACs. |
| Input Voltage-Noise Density | 4.5nV/√Hz at 1kHz - ensures minimal added noise in microphone preamps or strain gauge amplifiers with <100µVpp signal levels. |
| Total Harmonic Distortion + Noise | 0.0005% THD+N at 1kHz, 2VP-P, RL = 1kΩ - preserves 16-bit+ dynamic range in precision data acquisition paths. |
| Supply Voltage Range | +2.7V to +5.5V single supply - compatible with Li-ion, 3.3V logic, and automotive 5V domains without external regulators. |
| Shutdown Current | 0.01µA - enables µA-level system sleep modes; output enters high-Z state, preventing loading of downstream circuits. |
| Input Common-Mode Range | –0.1V to (VDD – 1.7V) - allows direct sensing of signals referenced to ground in single-supply configurations. |
| Rail-to-Rail Output Swing | Within 80mV of VDD/VSS at RL = 1kΩ - maximizes usable dynamic range in low-voltage systems (e.g., 3.3V ADC reference buffers). |
Pinout & Package
SOT23-6 package (Package Code U6F+6), 6-pin surface-mount, RoHS-compliant, with exposed pad not present in SOT23 variant (only in TDFN). Thermal resistance θJA = 185.5°C/W (single-layer board).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output terminal; rail-to-rail capable, drives loads ≥1kΩ with DC accuracy; high-impedance during shutdown. |
| 2 | VSS | Negative supply / ground reference; must be connected to system ground in single-supply operation; EP (exposed paddle) not applicable in SOT23. |
| 3 | IN+ | Noninverting input; high-impedance (1000GΩ), supports ground-sensing down to –0.1V; low input bias current (±1pA typ) minimizes offset error. |
| 4 | IN– | Inverting input; same impedance and bias characteristics as IN+; requires feed-forward capacitor (CZ) if RG||RF > 5kΩ to maintain phase margin. |
| 5 | SHDN | Active-low shutdown control; logic-low (≤0.3×VDD) enables shutdown mode; logic-high (≥0.7×VDD) enables normal operation. |
| 6 | VDD | Positive supply input; accepts +2.7V to +5.5V; requires local 0.1µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated GBW | 42MHz stable only at AV ≥ +5V/V - enables higher bandwidth than unity-gain stable op amps without sacrificing stability in fixed-gain stages. |
| Ultra-Low THD+N | 0.0005% at 1kHz, 2VP-P, RL = 1kΩ - maintains signal integrity in audio-grade and medical instrumentation signal paths. |
| Low-Noise Input Stage | 4.5nV/√Hz voltage noise + 0.5fA/√Hz current noise - optimal for high-Z sensors (piezoelectric, strain gauges) where current noise dominates. |
| Ground-Sensing Inputs | VCM extends 0.1V below VSS - eliminates need for negative supply or level-shifting in single-ended sensor interfaces. |
| Integrated Shutdown | 0.01µA quiescent current in shutdown, high-Z output - enables power gating in battery-powered IoT nodes and portable medical devices. |
| Rail-to-Rail Output Drive | Swings within 80mV of VDD/VSS into 1kΩ - delivers full-scale output headroom for 16-bit DACs and low-voltage ADC drivers. |
Applications
| ADC Buffers | DAC Output Amplifiers |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., MAX11274) with variable input impedance and strict THD requirements. IC Role / Device Role / Timing Role: Precision buffer isolating ADC input from source impedance variations; provides low-noise, low-THD drive with rail-to-rail swing. Use Value: Preserves ENOB >15.5 bits by contributing <0.0005% THD+N and adding <4.5nV/√Hz noise - below quantization noise floor of 16-bit conversion. |
Use Scenario: Amplifying unbuffered voltage-output DAC (e.g., MAX5541) in programmable power supply feedback loops. IC Role / Device Role / Timing Role: Gain-of-5 output amplifier with shutdown control synchronized to DAC update cycles. Use Value: Enables 0–5V full-scale output from 0–1V DAC reference while maintaining 16-bit linearity; SHDN reduces idle power by 99.999%. |
| Low-Noise Microphone Preamplifiers | Strain Gauges/Sensor Amplifiers |
Use Scenario: First-stage amplification of electret condenser microphone output in voice-controlled edge devices. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance preamp with gain ≥ +5V/V and integrated shutdown for wake-on-voice. Use Value: Achieves SNR >72dB(A) with 4.5nV/√Hz input noise and 0.5fA/√Hz current noise - critical for detecting sub-10mV acoustic signals. |
Use Scenario: Signal conditioning for quarter-bridge strain gauge in industrial load cells operating from 3.3V supply. IC Role / Device Role / Timing Role: Fixed-gain (+5V/V) instrumentation amplifier front-end with rail-to-rail output and ground-referenced common-mode range. Use Value: Delivers full 0–3.3V output swing from mV-level bridge outputs while rejecting common-mode shifts up to ±1.7V from VDD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision decompensated op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1611AIDR | 30MHz GBW, unity-gain stable, 1.1nV/√Hz noise, no shutdown pin, SO-8 package | Requires external gain-setting resistors for AV ≥ +5V/V; lacks integrated shutdown; lower noise but narrower bandwidth | Select when lowest possible voltage noise (<1.2nV/√Hz) is prioritized over shutdown capability and 42MHz bandwidth. |
| ADA4898-1ARMZ | 65MHz GBW, unity-gain stable, 1.1nV/√Hz noise, no shutdown, MSOP-8 package, higher supply current (10mA) | Higher power consumption; no shutdown function; wider bandwidth but less optimized for low-THD at AV = +5V/V | Select when maximum small-signal bandwidth (>50MHz) and lowest noise are required, and shutdown is implemented externally. |
Compared with OPA1611AIDR and ADA4898-1ARMZ, the MAX4488AUT+T uniquely combines 42MHz decompensated GBW, integrated shutdown (0.01µA), and 0.0005% THD+N at AV = +5V/V in a space-saving SOT23-6 package - making it optimal for power-constrained, fixed-gain, low-distortion signal chains.
Availability
MAX4488AUT+T is available at Aetrix Electronics and suitable for precision data acquisition, medical instrumentation, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compatible variants.
Supply support for MAX4488AUT+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, medical, and automotive markets.
The MAX4475–MAX4489 family targets low-noise, low-distortion signal conditioning in space-constrained, single-supply systems - with the MAX4488AUT+T specifically engineered for fixed-gain (≥+5V/V), high-bandwidth, rail-to-rail output stages requiring shutdown capability.
FAQ
What is the minimum stable gain for the MAX4488AUT+T?
The MAX4488AUT+T is internally compensated for closed-loop gains of +5V/V or greater. It is not unity-gain stable; attempting AV = +1V/V may cause oscillation or degraded phase margin. For unity-gain applications, use the MAX4475AUT+T instead. This design choice enables its 42MHz gain-bandwidth product and 10V/µs slew rate.
Does the MAX4488AUT+T support rail-to-rail input operation?
No - the MAX4488AUT+T features rail-to-rail *output* swing but has a limited input common-mode voltage range of –0.1V to (VDD – 1.7V). It does *not* support input voltages at the positive rail. However, its ability to sense 0.1V below ground makes it suitable for true ground-referenced inputs in single-supply systems.
What is the purpose of the SHDN pin on the MAX4488AUT+T?
The SHDN pin on the MAX4488AUT+T is an active-low control that reduces quiescent supply current to 0.01µA and places the output in a high-impedance state when driven logic-low. This enables precise power gating in battery-operated equipment and reduces system standby power without requiring external switches or isolation circuitry.
Can the MAX4488AUT+T drive capacitive loads?
Yes - the MAX4488AUT+T is stable driving capacitive loads up to 200pF without oscillation, as confirmed in the datasheet's AC Electrical Characteristics. For loads >100pF, consider adding a small series resistor (e.g., 10–50Ω) between the output and capacitance to improve phase margin, especially in high-gain configurations.
Is the MAX4488AUT+T qualified for automotive applications?
The base MAX4488AUT+T is not automotive-qualified. However, the /V variant - MAX4488AUT/V+T - is AEC-Q100 qualified for automotive applications and shares identical electrical specifications and pinout. Always verify the specific part number suffix (/V) when designing for automotive environments.
MAX4488AUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 42 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX4488AUT+T FAQ
1.How can I place an order for MAX4488AUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4488AUT+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 MAX4488AUT+T reliable?
The price and inventory of MAX4488AUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4488AUT+T is usually 5 days.
3.What payment methods are accepted for MAX4488AUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4488AUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4488AUT+T?
MAX4488AUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4488AUT+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 MAX4488AUT+T?
For technical support, including MAX4488AUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4488AUT+T requirements.
6.How does Aetrix verify that MAX4488AUT+T is sourced from the original manufacturer or authorized distributors?
All MAX4488AUT+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 MAX4488AUT+T meets industry standards.
7.What is the process for return or replacement of MAX4488AUT+T?
All MAX4488AUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4488AUT+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 MAX4488AUT+T part is unused and in its original packaging.
Return procedure for MAX4488AUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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