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Analog Devices Inc./Maxim Integrated MAX4476AUT#G16
- Part No.:
- MAX4476AUT#G16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4476AUT#G16.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,305
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Product details
Overview
MAX4476AUT#G16 from Maxim Integrated is a single-channel, rail-to-rail output, low-noise, low-distortion operational amplifier optimized for precision analog signal conditioning. It operates from +2.7V to +5.5V, delivers 10MHz gain-bandwidth, achieves 0.0002% THD+N at 1kHz (1kΩ load), features 4.5nV/√Hz input voltage-noise density, and draws 2.2mA quiescent current per amplifier - ideal for high-fidelity ADC buffering and sensor amplification in space-constrained industrial instrumentation.
For engineers reviewing the MAX4476AUT#G16 datasheet, MAX4476AUT#G16 pinout, MAX4476AUT#G16 application, or MAX4476AUT#G16 equivalent, key selection criteria include its unity-gain stability, guaranteed rail-to-rail output swing with 1kΩ load, input common-mode range extending to ground, low 70µV max input offset voltage, and SOT23-6 package compatibility with high-density PCB layouts.
Technical Context
The MAX4476AUT#G16 is a unity-gain stable BiCMOS op amp with a 10MHz gain-bandwidth product and 3V/µs slew rate. Its input stage supports common-mode voltages from VSS to (VDD − 1.6V), enabling true ground-sensing operation without phase reversal. The push-pull output drives 1kΩ loads while maintaining DC accuracy and delivers rail-to-rail swing within 8mV of supplies at 10kΩ.
No shutdown function is present - unlike the MAX4475/MAX4488 variants, the MAX4476 lacks SHDN pin support. Its internal compensation ensures stability at AV = +1V/V, and it is rated for continuous operation from −40°C to +125°C with guaranteed performance across the full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 10MHz - enables stable closed-loop operation up to 100kHz at AV = +100V/V, suitable for anti-aliasing and reconstruction filters. |
| Input Voltage-Noise Density | 4.5nV/√Hz at 1kHz - preserves SNR in low-level signal chains such as piezoelectric sensor interfaces and medical front-ends. |
| Total Harmonic Distortion + Noise | 0.0002% at 1kHz, 2VP-P, RL = 1kΩ - meets 16-bit DAC buffer requirements with <1 LSB error contribution. |
| Input Offset Voltage (max) | ±750µV over −40°C to +125°C - ensures DC accuracy in strain gauge and digital scale applications without trimming. |
| Rail-to-Rail Output Swing | Within 8mV of VDD/VSS at 10kΩ - maximizes dynamic range in low-voltage (2.7V–5.5V) single-supply systems. |
| Quiescent Supply Current | 2.2mA per amplifier at VDD = 5V - balances low-noise performance with power efficiency in battery-aware portable instrumentation. |
| Input Bias Current (max) | ±150pA - eliminates significant error in high-impedance transducer interfaces (e.g., >10MΩ sources). |
Pinout & Package
MAX4476AUT#G16 is housed in a RoHS-compliant, lead-free 6-pin SOT23 package (package code U6F+6, outline 21-0058), with thermal pad not present (unlike TDFN variants). Pin 1 is OUT, Pin 2 is IN−, Pin 3 is IN+, Pin 4 is VSS, Pin 5 is NC (no connection), and Pin 6 is VDD. The NC pin must remain unconnected and floating; no internal functionality is assigned.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier Output | Push-pull rail-to-rail output capable of sourcing/sinking ±5mA; connects directly to ADC input or DAC load. |
| 2 | Inverting Input | High-impedance node (1000GΩ typical); sensitive to stray capacitance - requires short trace routing and guard ring. |
| 3 | Noninverting Input | DC-coupled input with common-mode range including ground; supports single-ended sensor inputs referenced to system ground. |
| 4 | Negative Supply | Connect to ground in single-supply operation; serves as reference for output swing and bias network. |
| 5 | No Connection | Internally unconnected; must be left floating - no tie to VSS, VDD, or PCB plane. |
| 6 | Positive Supply | Accepts +2.7V to +5.5V; requires local 0.1µF ceramic bypass capacitor placed ≤2mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Enables direct use in voltage followers and gain-of-one buffers without external compensation components. |
| Ground-sensing input stage | Common-mode range extends to VSS, allowing direct interface with 0V-referenced sensors (e.g., thermocouples, bridge outputs). |
| Rail-to-rail output with 1kΩ drive | Maintains linearity and DC accuracy even when driving low-impedance loads - critical for driving ADC sample capacitors. |
| Low 70µV typical input offset | Reduces calibration burden in precision measurement systems; supports <0.01% gain error in 12-bit+ applications. |
| BiCMOS process technology | Combines bipolar input stage (low noise, low distortion) with CMOS output (rail-to-rail swing, high output current). |
Applications
| ADC Buffers | DAC Output Amplifiers |
|---|---|
Use Scenario: Buffering the unbuffered voltage output of a 16-bit DAC (e.g., MAX5541) before routing to an analog subsystem. IC Role / Device Role / Timing Role: Precision voltage follower with ultra-low input bias current (150pA max) to prevent DAC output loading and maintain monotonicity. Use Value: Eliminates 6nA input bias error threshold, preserving full 16-bit accuracy without external trimming or calibration. | Use Scenario: Driving the analog input of a successive-approximation ADC (e.g., MAX11200) in a data acquisition module. IC Role / Device Role / Timing Role: Low-noise, fast-settling (2µs to 0.01%) driver that settles before ADC aperture time, minimizing sampling error. Use Value: 4.5nV/√Hz noise and 0.0002% THD+N ensure effective resolution >15.5 ENOB at 100ksps sampling rates. |
| Low-Noise Microphone/Preamplifiers | Strain Gauges/Sensor Amplifiers |
Use Scenario: First-stage amplification of electret microphone output in voice-controlled industrial HMI. IC Role / Device Role / Timing Role: High-input-impedance, low-noise preamp configured in noninverting mode with gain ≥20V/V. Use Value: 0.5fA/√Hz current-noise density prevents degradation when interfacing with high-Z (>2GΩ) mic capsules. | Use Scenario: Amplifying mV-level differential output from a Wheatstone bridge strain gauge in a digital scale platform. IC Role / Device Role / Timing Role: Single-supply instrumentation-grade amplifier with rail-to-rail output and ground-referenced input. Use Value: Input common-mode range including ground enables direct bridge connection without level-shifting circuitry. |
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 |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.1µV/°C offset drift vs. MAX4476's ±0.3µV/°C; 17µV max VOS vs. ±750µV; 350kHz GBW vs. 10MHz. | Better DC precision but lower bandwidth - suited for ultra-stable DC-coupled sensor nodes, not wideband audio or fast settling. | Select OPA333AIDBVR only when sub-µV offset drift dominates over bandwidth and noise requirements. |
| ADA4897-1ARJZ-R7 | Higher speed (220MHz GBW), lower noise (1nV/√Hz), but requires dual supply or negative rail; not rail-to-rail input. | Not compatible with single-supply ground-sensing topologies; demands layout changes for split supply and decoupling. | Choose ADA4897-1ARJZ-R7 only for high-speed, AC-coupled signal paths where VSS ≠ ground and bandwidth >10MHz is mandatory. |
Compared with OPA333AIDBVR and ADA4897-1ARJZ-R7, the MAX4476AUT#G16 uniquely balances 10MHz bandwidth, rail-to-rail I/O, ground-sensing capability, and 4.5nV/√Hz noise in a 6-pin SOT23 - making it optimal for cost-sensitive, space-constrained, single-supply precision analog front-ends.
Availability
MAX4476AUT#G16 is available at Aetrix Electronics and suitable for industrial instrumentation, medical sensor modules, and portable test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4476AUT#G16 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.
The MAX4475–MAX4478 family was engineered specifically for low-noise, low-distortion signal conditioning in single-supply, ground-referenced systems - targeting 16-bit+ data converters, medical front-ends, and high-resolution sensor interfaces.
FAQ
What is the operating temperature range for MAX4476AUT#G16?
The MAX4476AUT#G16 is specified for continuous operation from −40°C to +125°C. All electrical parameters - including input offset voltage, gain-bandwidth, and THD+N - are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive sensors and factory-floor instrumentation where ambient temperatures exceed 85°C.
Does MAX4476AUT#G16 support shutdown mode?
No, the MAX4476AUT#G16 does not include a shutdown function. Unlike the MAX4475 and MAX4488 variants, the MAX4476 has no SHDN pin - Pin 5 is designated NC (no connection). For low-power applications requiring standby current <1µA, consider the MAX4475AUT#G16 instead.
What is the maximum capacitive load the MAX4476AUT#G16 can drive stably?
The MAX4476AUT#G16 is stable driving capacitive loads up to 200pF without oscillation, as verified by phase margin measurements (≥70° at AV = +1V/V). For loads >200pF, external isolation resistance (e.g., 10–50Ω in series with the output) is recommended to preserve stability while maintaining signal integrity.
Can MAX4476AUT#G16 be used with a single 3.3V supply?
Yes, the MAX4476AUT#G16 operates fully specified from +2.7V to +5.5V, including 3.3V nominal supplies. At VDD = 3.3V, it maintains rail-to-rail output swing (within 12mV of rails at 1kΩ), 0.0003% THD+N, and 4.5nV/√Hz noise - confirmed in the datasheet's AC Electrical Characteristics table under VDD = 3V conditions.
Is the MAX4476AUT#G16 pin-compatible with other devices in the MAX447x family?
The MAX4476AUT#G16 shares the same 6-pin SOT23 pinout as the MAX4475AUT#G16 and MAX4488AUT#G16, but differs functionally: Pin 5 is NC on MAX4476, whereas it is SHDN on MAX4475/MAX4488. Swapping requires verifying whether shutdown control is needed - no PCB change is needed physically, but firmware or external logic may require update if SHDN was previously asserted.
MAX4476AUT#G16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Push-Pull, 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-23-6
MAX4476AUT#G16 FAQ
1.How can I place an order for MAX4476AUT#G16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4476AUT#G16 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 MAX4476AUT#G16 reliable?
The price and inventory of MAX4476AUT#G16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4476AUT#G16 is usually 5 days.
3.What payment methods are accepted for MAX4476AUT#G16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4476AUT#G16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4476AUT#G16?
MAX4476AUT#G16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4476AUT#G16 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 MAX4476AUT#G16?
For technical support, including MAX4476AUT#G16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4476AUT#G16 requirements.
6.How does Aetrix verify that MAX4476AUT#G16 is sourced from the original manufacturer or authorized distributors?
All MAX4476AUT#G16 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 MAX4476AUT#G16 meets industry standards.
7.What is the process for return or replacement of MAX4476AUT#G16?
All MAX4476AUT#G16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4476AUT#G16, 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 MAX4476AUT#G16 part is unused and in its original packaging.
Return procedure for MAX4476AUT#G16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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