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Analog Devices Inc./Maxim Integrated MAX4475AUT#TG16
- Part No.:
- MAX4475AUT#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4475AUT#TG16.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:1,216
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Product details
Overview
MAX4475AUT#TG16 from Maxim Integrated is a single-channel, rail-to-rail output, low-noise operational amplifier optimized for precision signal conditioning in space-constrained systems. It delivers 10MHz gain-bandwidth, 0.0002% THD+N at 1kHz, 4.5nV/√Hz input voltage-noise density, and operates from +2.7V to +5.5V single supply - making it ideal for high-fidelity ADC buffering and medical sensor front-ends.
For engineers reviewing the MAX4475AUT#TG16 datasheet, MAX4475AUT#TG16 pinout, MAX4475AUT#TG16 application, or MAX4475AUT#TG16 equivalent, key selection criteria include its shutdown-enabled ultra-low quiescent current (0.01µA), guaranteed rail-to-rail output swing into 1kΩ, ground-sensing input common-mode range, and SOT23-6 package compatibility with high-density PCB layouts.
Technical Context
The MAX4475AUT#TG16 is unity-gain stable with internal compensation, supporting closed-loop gains from +1V/V up to full bandwidth. Its BiCMOS process enables simultaneous low input bias current (±1pA typ) and low noise performance, while the push-pull output stage maintains DC accuracy across temperature (±750µV VOS max over –40°C to +125°C) and drives capacitive loads up to 200pF without oscillation.
It features a dedicated SHDN pin (Pin 5) that places the output in high-impedance state and reduces supply current to 0.01µA, enabling power-gated signal paths in battery-powered instrumentation. Input common-mode range extends from –0.1V to (VDD – 1.7V), allowing direct interfacing with grounded sensors and DACs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 10MHz - supports stable unity-gain operation with sufficient loop gain for precision DC-coupled applications. |
| THD+N | 0.0002% at 1kHz, RL = 1kΩ - preserves signal integrity in 16-bit+ data acquisition systems. |
| Input Voltage-Noise Density | 4.5nV/√Hz at 1kHz - minimizes contribution to system noise floor in low-level sensor amplification. |
| Quiescent Supply Current | 2.2mA per amplifier (VDD = 3V) - balances performance and power in always-on analog stages. |
| Shutdown Current | 0.01µA - enables µA-level sleep mode for portable medical or industrial monitoring devices. |
| Rail-to-Rail Output Swing | Within 80mV of rails into 1kΩ load - maximizes dynamic range in low-voltage (2.7V–5.5V) systems. |
| Input Offset Voltage | ±70µV (typ), ±750µV (max over temp) - ensures <1 LSB error in 16-bit ADC buffer applications. |
Pinout & Package
MAX4475AUT#TG16 is housed in a 6-pin SOT23 package (package code U6F+6), with exposed paddle (EP) not present - confirmed by land pattern number 90-0175 and outline 21-0058. Pin 1 is OUT; Pin 2 is VSS; Pin 3 is IN+; Pin 4 is IN−; Pin 5 is SHDN; Pin 6 is VDD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier Output | Delivers rail-to-rail voltage swing; high-impedance during SHDN assertion. |
| 2 | Negative Supply (GND) | Reference node for single-supply operation; must be low-impedance for noise control. |
| 3 | Noninverting Input | High-impedance (1000GΩ), ground-sensing node for sensor/DAC interface. |
| 4 | Inverting Input | Accepts feedback network; requires feed-forward capacitor (CZ) if RG||RF > 20kΩ. |
| 5 | Shutdown Control | Active-low logic input; pulls output to Hi-Z and cuts supply current to 0.01µA when low. |
| 6 | Positive Supply | Accepts +2.7V to +5.5V; requires local 0.1µF ceramic bypass to VSS. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power shutdown mode | Reduces operating current from 2.2mA to 0.01µA, enabling rapid power gating in multi-stage analog chains. |
| Ground-sensing input range | Common-mode extends to –0.1V (below VSS), supporting direct connection to grounded piezoelectric transducers or bridge sensors. |
| Capacitive-load stability | Remains stable driving up to 200pF, eliminating need for external isolation resistors in ADC driver configurations. |
| Ultra-low THD+N | 0.0002% at 1kHz ensures minimal harmonic corruption in audio-grade and medical waveform reconstruction. |
| High open-loop gain | 120dB large-signal voltage gain maintains linearity and accuracy under varying load conditions. |
Applications
| ADC Buffers | DAC Output Amplifiers |
|---|---|
Use Scenario: Driving the unbuffered voltage output of a 16-bit DAC (e.g., MAX5541) into a variable load. IC Role / Device Role / Timing Role: Precision output buffer with sub-6nA input bias current to preserve DAC linearity and monotonicity. Use Value: Eliminates offset and gain errors caused by DAC output loading; enables true 16-bit resolution over temperature. | Use Scenario: Conditioning analog signals from high-resolution ADCs before digitization. IC Role / Device Role / Timing Role: Anti-aliasing and drive-stage amplifier with rail-to-rail swing and low noise floor. Use Value: Maintains SNR > 98dB across full input range; prevents clipping in low-voltage (3V) data loggers. |
| Low-Noise Microphone/Preamplifiers | Strain Gauges/Sensor Amplifiers |
Use Scenario: First-stage amplification of electret microphone outputs in hearing aids or voice recorders. IC Role / Device Role / Timing Role: Low-noise, low-distortion preamplifier with DC-coupled input for wideband acoustic capture. Use Value: 4.5nV/√Hz noise density ensures >70dB(A) dynamic range; shutdown mode extends battery life. | Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure sensors. IC Role / Device Role / Timing Role: Instrumentation-grade signal conditioner with matched input impedance and low VOS drift. Use Value: ±750µV VOS max over –40°C to +125°C enables <0.01% FSO error without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA378AIDBVR | Lower noise (4.2nV/√Hz), no shutdown pin, 9MHz GBW, SO-5 package only. | Lacks SHDN functionality; unsuitable for power-gated architectures requiring µA sleep current. | Select when shutdown is unnecessary and lowest possible voltage noise is critical. |
| ADA4897-1ARMZ | Higher slew rate (95V/µs), 225MHz GBW, but higher quiescent current (1.2mA) and THD+N (0.0005% at 1kHz). | Optimized for high-speed, AC-coupled applications; less suitable for precision DC-coupled sensor interfaces. | Select when bandwidth >50MHz is required and power budget allows >500× higher supply current. |
Compared with OPA378AIDBVR and ADA4897-1ARMZ, the MAX4475AUT#TG16 uniquely combines 10MHz bandwidth, 0.0002% THD+N, 0.01µA shutdown current, and SOT23-6 footprint - making it optimal for compact, battery-aware, high-fidelity analog front-ends where both precision and power efficiency are mandatory.
Availability
MAX4475AUT#TG16 is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor interfaces, and portable data acquisition systems requiring stable component supply, automotive-grade temperature range (–40°C to +125°C), and RoHS-compliant packaging.
Supply support for MAX4475AUT#TG16 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 automotive applications.
The MAX4475AUT#TG16 belongs to the MAX4475–MAX4478 family of low-noise, rail-to-rail op amps engineered specifically for high-dynamic-range signal conditioning in space- and power-constrained systems.
FAQ
What is the maximum capacitive load the MAX4475AUT#TG16 can drive without oscillation?
The MAX4475AUT#TG16 is specified to remain stable driving capacitive loads up to 200pF, as confirmed in the AC Electrical Characteristics table. This eliminates the need for series isolation resistors in typical ADC buffer or filter applications, preserving signal fidelity and simplifying layout. Stability is maintained across the full –40°C to +125°C temperature range and supply voltages from +2.7V to +5.5V.
Does the MAX4475AUT#TG16 support true rail-to-rail input common-mode voltage range?
The MAX4475AUT#TG16 does not support rail-to-rail input; its input common-mode voltage range extends from –0.1V to (VDD – 1.7V), enabling ground-sensing capability but not full rail-to-rail input. However, it does provide true rail-to-rail output swing - within 80mV of either rail into a 1kΩ load - which is critical for maximizing dynamic range in low-voltage systems.
What is the purpose of the SHDN pin on the MAX4475AUT#TG16, and how is it controlled?
The SHDN pin (Pin 5) on the MAX4475AUT#TG16 is an active-low digital control input. When pulled low (≤0.3 × VDD), it disables the amplifier core, reducing quiescent supply current to 0.01µA and placing the output in a high-impedance state. When tied to VDD or left open (with internal pull-up), the device operates normally. This feature enables precise power gating in battery-powered instrumentation and multi-channel sensor arrays.
Is the MAX4475AUT#TG16 qualified for automotive applications?
The MAX4475AUT#TG16 is not an automotive-qualified part. Automotive-grade variants are designated with "/V" suffix (e.g., MAX4475AUT/V+T). The MAX4475AUT#TG16 is rated for –40°C to +125°C operation and meets industrial reliability standards, but lacks AEC-Q100 qualification, stress testing, and automotive-specific documentation required for under-hood or safety-critical vehicle systems.
How does the MAX4475AUT#TG16 compare to the MAX4488 in terms of bandwidth and stability?
The MAX4475AUT#TG16 is unity-gain stable with a 10MHz gain-bandwidth product, while the MAX4488 is decompensated for gains ≥+5V/V and offers 42MHz GBW. The MAX4475AUT#TG16 is optimized for precision DC-coupled applications requiring stability at low gains, whereas the MAX4488 targets higher-speed, fixed-gain signal paths where increased slew rate (10V/µs vs. 3V/µs) and bandwidth are prioritized over unity-gain flexibility.
MAX4475AUT#TG16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 10 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
MAX4475AUT#TG16 FAQ
1.How can I place an order for MAX4475AUT#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4475AUT#TG16 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 MAX4475AUT#TG16 reliable?
The price and inventory of MAX4475AUT#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4475AUT#TG16 is usually 5 days.
3.What payment methods are accepted for MAX4475AUT#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4475AUT#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4475AUT#TG16?
MAX4475AUT#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4475AUT#TG16 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 MAX4475AUT#TG16?
For technical support, including MAX4475AUT#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4475AUT#TG16 requirements.
6.How does Aetrix verify that MAX4475AUT#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX4475AUT#TG16 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 MAX4475AUT#TG16 meets industry standards.
7.What is the process for return or replacement of MAX4475AUT#TG16?
All MAX4475AUT#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4475AUT#TG16, 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 MAX4475AUT#TG16 part is unused and in its original packaging.
Return procedure for MAX4475AUT#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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