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Analog Devices Inc./Maxim Integrated MAX4475ATT+T
- Part No.:
- MAX4475ATT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4475ATT+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
The MAX4475ATT+T from Maxim Integrated is a single, rail-to-rail output, low-noise, low-distortion operational amplifier optimized for precision analog signal conditioning. It features 10MHz gain-bandwidth product, 0.0002% THD+N at 1kHz (1kΩ load), 4.5nV/√Hz input voltage-noise density, 2.2mA quiescent supply current, and shutdown mode reducing current to 0.01µA - making it ideal for high-fidelity ADC buffers and medical sensor front-ends.
For engineers reviewing the MAX4475ATT+T datasheet, MAX4475ATT+T pinout, MAX4475ATT+T application, or MAX4475ATT+T equivalent, this page delivers verified specifications, TDFN-6 package layout, real-world use cases in strain gauge amplification and DAC output stages, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The MAX4475ATT+T is a unity-gain stable BiCMOS op amp with rail-to-rail output swing down to 80mV from each rail (RL = 1kΩ) and input common-mode range extending 0.1V below VSS. Its 10MHz GBW and 3V/µs slew rate support wideband, low-distortion closed-loop configurations up to +1V/V without external compensation.
It integrates a dedicated SHDN pin enabling ultra-low-power standby (0.01µA), placing the output in high-impedance state - critical for power-constrained portable instrumentation. Input bias current is ≤150pA (max), and input offset voltage is ±70µV (typ), ensuring DC accuracy in high-impedance sensor interfaces like piezoelectric transducers and bridge-based strain gauges.
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 filters and buffer stages. |
| THD+N | 0.0002% at 1kHz, 2VP-P, RL = 1kΩ - enables 16-bit DAC buffering without introducing measurable harmonic distortion. |
| Input Voltage-Noise Density | 4.5nV/√Hz at 1kHz - preserves SNR in low-level microphone and sensor preamplifier applications. |
| Quiescent Supply Current | 2.2mA per amplifier at VDD = 3V - balances performance and battery life in portable medical devices. |
| Shutdown Current | 0.01µA - reduces system standby power by >99.99% while retaining fast wake-up (<10µs enable delay). |
| Input Offset Voltage | ±70µV (typ), ±750µV (max over -40°C to +125°C) - ensures <0.01% gain error in 10V full-scale industrial sensor outputs. |
| Rail-to-Rail Output Swing | Within 80mV of VDD/VSS at RL = 1kΩ - maximizes dynamic range in 3.3V or 5V single-supply systems. |
Pinout & Package
TDFN-6 (6-pin, 3mm × 3mm, exposed paddle), RoHS-compliant, thermal resistance θJA = 42°C/W (multi-layer board). Exposed paddle (EP) must be soldered to VSS for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts +2.7V to +5.5V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 2 - IN− | Inverting input | High-impedance node (1000GΩ differential resistance); sensitive to stray capacitance - minimize trace length. |
| 3 - IN+ | Noninverting input | Common-mode range includes ground; no phase reversal when overdriven - safe for unbuffered sensor inputs. |
| 4 - VSS | Negative supply / ground reference | Connect directly to PCB ground plane; EP pad must be tied to this node for thermal stability. |
| 5 - SHDN | Active-low shutdown control | Logic-low (≤0.3×VDD) disables amplifier and forces output high-Z; logic-high (≥0.7×VDD) enables normal operation. |
| 6 - OUT | Amplifier output | Drives capacitive loads ≤200pF stably; rail-to-rail swing supports full utilization of ADC input range. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low THD+N | 0.0002% at 1kHz enables distortion-free signal chain design for 16-bit data converters. |
| Ground-sensing input | Input common-mode extends to VSS − 0.1V - allows direct interfacing with 0V-referenced bridges and thermocouples. |
| True rail-to-rail output | Swings within 80mV of both rails into 1kΩ - preserves >96% of available voltage headroom in 3.3V systems. |
| Low-power shutdown | Reduces supply current to 0.01µA while maintaining fast recovery (<10µs) - essential for duty-cycled sensor nodes. |
| High DC precision | VOS = ±70µV (typ), IB = 1pA (typ) - eliminates offset drift and bias-current errors in high-impedance pH or strain gauge circuits. |
Applications
| ADC Buffers | DAC Output Amplifiers |
|---|---|
|
Use Scenario: Buffering the unbuffered voltage output of a 16-bit DAC (e.g., MAX5541) driving a 10kΩ load. IC Role / Device Role / Timing Role: Precision voltage follower with sub-150pA input bias current to prevent code-dependent gain error. Use Value: Maintains 16-bit monotonicity and linearity by eliminating DAC output loading effects and thermal drift. |
Use Scenario: Driving analog inputs of successive-approximation ADCs with fast acquisition requirements. IC Role / Device Role / Timing Role: Low-settling-time (2µs to 0.01%) unity-gain buffer isolating DAC from ADC sampling kickback. Use Value: Prevents missing codes during high-speed conversion by ensuring full-scale step settles before sample window closes. |
| Low-Noise Microphone/Preamplifiers | Strain Gauges/Sensor Amplifiers |
|
Use Scenario: First-stage amplification of electret microphone signals in hearing aids or voice recorders. IC Role / Device Role / Timing Role: Low-noise, low-THD transimpedance or noninverting amplifier with 4.5nV/√Hz input noise floor. Use Value: Preserves speech intelligibility and SNR >95dB(A) across 20Hz–20kHz bandwidth without requiring post-amplifier filtering. |
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure sensors. IC Role / Device Role / Timing Role: High-input-impedance, low-offset instrumentation-grade amplifier with rail-to-rail output swing. Use Value: Delivers full-scale output swing into ADC while rejecting common-mode noise from long sensor cables. |
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 |
|---|---|---|---|
| OPA376AIDBVR | Lower input voltage noise (2.8nV/√Hz), but higher THD+N (0.0005%), no shutdown pin, 5.5MHz GBW. | Better suited for ultra-low-noise audio preamps; less suitable for power-gated sensor nodes due to lack of SHDN. | Select OPA376AIDBVR when noise dominates design constraints and shutdown is unnecessary. |
| ADA4897-1ARMZ | Higher GBW (1GHz), lower input capacitance (1.2pF), but higher supply current (3.5mA), no rail-to-rail input. | Ideal for high-speed active filters or photodiode transimpedance; unsuitable for ground-sensing bridge amplifiers. | Select ADA4897-1ARMZ only when bandwidth >100MHz is required and input common-mode range ≥1.2V above VSS. |
Compared with OPA376AIDBVR and ADA4897-1ARMZ, the MAX4475ATT+T uniquely combines 10MHz GBW, true rail-to-rail input/output, integrated shutdown, and 0.0002% THD+N - making it the only option among the three that satisfies simultaneous requirements for precision, low power, and ground-referenced sensing in portable instrumentation.
Availability
The MAX4475ATT+T is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor signal conditioning, and portable data acquisition systems requiring stable component supply across extended temperature ranges (−40°C to +125°C).
Supply support for MAX4475ATT+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 automotive applications.
The MAX4475ATT+T belongs to Maxim's low-noise, rail-to-rail op amp family engineered specifically for high-dynamic-range signal chains where distortion, noise, and DC accuracy are critical - such as 16-bit+ data converter interfaces and sensor front-ends.
FAQ
What is the operating temperature range of the MAX4475ATT+T?
The MAX4475ATT+T is rated for continuous operation from −40°C to +125°C. This extended industrial temperature range is validated per the device's Absolute Maximum Ratings and DC Electrical Characteristics tables, supporting deployment in under-hood automotive sensors and industrial PLC modules where ambient temperatures exceed standard commercial limits.
Does the MAX4475ATT+T support single-supply operation?
Yes, the MAX4475ATT+T operates from a single +2.7V to +5.5V supply. Its input common-mode voltage range includes ground (VSS − 0.1V), and its rail-to-rail output swings within 80mV of both supply rails into a 1kΩ load - enabling full utilization of supply headroom in battery-powered systems without dual supplies.
What package type is used for the MAX4475ATT+T?
The MAX4475ATT+T uses a 6-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Paddle) package, 3mm × 3mm footprint, RoHS-compliant. The exposed paddle (EP) must be soldered to VSS for thermal dissipation and optimal electrical performance - confirmed by Maxim's Package Information document (Outline Number 21-0137).
How does the shutdown feature of the MAX4475ATT+T function?
The MAX4475ATT+T's SHDN pin is active-low: pulling it to VSS (≤0.3×VDD) reduces quiescent current to 0.01µA and places the output in high-impedance state. Release to VDD (≥0.7×VDD) restores operation with 10µs enable delay - verified in the AC Electrical Characteristics table under "Enable Delay Time from Shutdown".
Is the MAX4475ATT+T unity-gain stable?
Yes, the MAX4475ATT+T is unity-gain stable with a 10MHz gain-bandwidth product. This is explicitly stated in the General Description and confirmed in the Selector Guide, distinguishing it from the decompensated MAX4488/MAX4489 variants which require minimum gain ≥+5V/V.
MAX4475ATT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 6-TDFN (3x3)
MAX4475ATT+T FAQ
1.How can I place an order for MAX4475ATT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4475ATT+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 MAX4475ATT+T reliable?
The price and inventory of MAX4475ATT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4475ATT+T is usually 5 days.
3.What payment methods are accepted for MAX4475ATT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4475ATT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4475ATT+T?
MAX4475ATT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4475ATT+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 MAX4475ATT+T?
For technical support, including MAX4475ATT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4475ATT+T requirements.
6.How does Aetrix verify that MAX4475ATT+T is sourced from the original manufacturer or authorized distributors?
All MAX4475ATT+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 MAX4475ATT+T meets industry standards.
7.What is the process for return or replacement of MAX4475ATT+T?
All MAX4475ATT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4475ATT+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 MAX4475ATT+T part is unused and in its original packaging.
Return procedure for MAX4475ATT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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