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Analog Devices Inc./Maxim Integrated MAX4493AUK+T
- Part No.:
- MAX4493AUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4493AUK+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,491
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Product details
Overview
The MAX4493AUK+T from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier optimized for low-power, dual-supply systems (±2.25V to ±5.5V) or single-supply operation (+4.5V to +11V), delivering 5MHz gain-bandwidth, 770µA quiescent current per amplifier, and output swing within 10mV of either rail (RL = 100kΩ). It serves as a precision signal conditioner in battery-powered instrumentation and DAC output buffering.
For engineers reviewing the MAX4493AUK+T datasheet, MAX4493AUK+T pinout, MAX4493AUK+T application, or MAX4493AUK+T equivalent, key selection criteria include its automotive-grade temperature range (−40°C to +125°C), 110dB open-loop gain, 0.002% THD+N at 1kHz, rail-to-rail input common-mode range (VEE − 0.2V to VCC − 1.5V), and SOT23-5 packaging for space-constrained PCB layouts.
Technical Context
The MAX4493AUK+T employs a bipolar process with a unity-gain stable architecture and no phase reversal under overdriven inputs. Its input stage extends 200mV below the negative rail and within 1.5V of the positive rail, enabling wide dynamic range in sensor interface and reference buffer circuits.
Output stage design supports rail-to-rail swing into high-impedance loads (≤100kΩ) and maintains stability with capacitive loads up to 300pF. AC performance includes 3V/µs slew rate, 190kHz full-power bandwidth (5Vp-p), and 75° phase margin - critical for closed-loop accuracy in industrial control feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25V to ±5.5V dual or +4.5V to +11V single - supports legacy ±5V and modern low-voltage industrial rails. |
| Quiescent Current | 770µA per amplifier - enables multi-channel, always-on sensing without compromising battery life. |
| Gain-Bandwidth Product | 5MHz - sufficient for anti-aliasing filters, active low-pass stages, and moderate-speed DAC reconstruction. |
| Input Common-Mode Range | VEE − 0.2V to VCC − 1.5V - accommodates ground-referenced sensors and unipolar references in single-supply configurations. |
| Output Swing (RL = 100kΩ) | Within 10mV of rails - preserves full dynamic range for ADC input drivers and voltage reference buffers. |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures <0.01% gain error in precision gain-setting networks. |
| THD+N | 0.002% at 1kHz, 5Vp-p - meets audio-grade and high-fidelity signal conditioning requirements. |
Pinout & Package
The MAX4493AUK+T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5-1), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal pad not present. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Noninverting Input | High-impedance node (110MΩ common-mode, 250kΩ differential) accepting signals down to VEE − 0.2V. |
| 2 (VCC) | Positive Supply | Connects to main positive rail; requires local 0.1µF bypass capacitor to ground for PSRR optimization. |
| 3 (IN−) | Inverting Input | Differential input node; matched to IN+ for <1mV channel offset in dual/quad variants (not applicable to single MAX4493). |
| 4 (VEE) | Negative Supply | Connects to main negative rail or ground in single-supply mode; requires local 0.1µF bypass capacitor. |
| 5 (OUT) | Amplifier Output | Rail-to-rail output capable of sourcing/sinking 15mA; stable with ≤300pF capacitive load without isolation resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom into 100kΩ loads - eliminates need for level-shifting in ADC driver stages. |
| No phase reversal on overdrive | Prevents latch-up and transient errors when input exceeds common-mode range - critical for fault-tolerant sensor interfaces. |
| Automotive temperature rating | Qualified from −40°C to +125°C - suitable for engine control units, battery management, and under-hood electronics. |
| Low THD+N (0.002%) | Minimizes harmonic distortion in audio-path and precision waveform generation applications - verified at 1kHz, 5Vp-p. |
| Unity-gain stable | Operates reliably with gain ≥1 without external compensation - simplifies design of voltage followers and gain-of-1 buffers. |
Applications
| Battery-Powered Instrumentation | DAC Output Amplification |
|---|---|
Use Scenario: Portable multimeter front-end amplifying mV-level thermocouple or shunt voltage signals. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with low input bias current (0.2–1µA) and high CMRR (≥65dB) to reject supply noise. Use Value: 770µA quiescent current extends battery life while 110dB open-loop gain ensures <0.01% gain error across temperature. |
Use Scenario: Buffering 12-bit DAC outputs in programmable power supplies to drive remote sense lines. IC Role / Device Role / Timing Role: Rail-to-rail output driver maintaining full 0–5V or ±5V DAC range without clipping or headroom loss. Use Value: Output swing within 10mV of rails preserves DAC resolution; 5MHz GBW supports settling in <4µs for step changes. |
| Industrial Voltage Reference Buffer | Signal Conditioning for Analog Sensors |
Use Scenario: Isolating and scaling precision bandgap references (e.g., REF5025) before feeding ADC reference inputs. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain follower with 3µV/°C offset drift and 8nV/√Hz input noise density. Use Value: 10mV output swing margin prevents reference droop under load; 0.002% THD+N avoids introducing distortion into reference path. |
Use Scenario: Amplifying low-amplitude bridge sensor outputs (e.g., strain gauges, pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: High-CMRR (≥65dB), low-input-bias-current amplifier rejecting common-mode noise from long cables and EMI. Use Value: Input common-mode range extending 200mV below VEE allows direct connection to grounded-sensor bridges without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | Lower supply current (65µA), lower GBW (1MHz), rail-to-rail input/output, but only rated to +85°C. | Not qualified for automotive or extended industrial temperature operation; insufficient bandwidth for fast DAC settling. | Select LMV321IDBVR only for cost-sensitive, non-automotive, low-bandwidth (<1MHz) applications where ultra-low power dominates. |
| TSV911ICT | Higher GBW (8MHz), lower input offset (1.5mV max), but higher quiescent current (1.1mA) and limited rail-to-rail output swing (30mV from rail @ 100kΩ). | Acceptable for higher-speed signal chains but sacrifices output headroom and power efficiency in battery systems. | Choose TSV911ICT when bandwidth >5MHz is required and 30mV output swing margin is acceptable for the target ADC full-scale range. |
Compared with LMV321IDBVR and TSV911ICT, the MAX4493AUK+T uniquely balances 5MHz bandwidth, 770µA supply current, rail-to-rail output swing within 10mV, and −40°C to +125°C qualification - making it the only option among the three meeting automotive-grade, low-power, and precision output swing requirements simultaneously.
Availability
The MAX4493AUK+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, DAC output amplification, and industrial voltage reference buffering requiring stable component supply across automotive and extended-temperature production cycles.
Supply support for MAX4493AUK+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, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.
The MAX4493AUK+T belongs to Maxim's SC70/SOT23 low-power op amp family, engineered specifically for space-constrained, battery-operated, and automotive-qualified systems demanding rail-to-rail output and wide supply flexibility.
FAQ
What is the operating temperature range of the MAX4493AUK+T?
The MAX4493AUK+T is fully specified and qualified for continuous operation from −40°C to +125°C. This automotive-grade temperature range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet, making MAX4493AUK+T suitable for under-hood electronics, battery management systems, and industrial control environments where ambient temperatures exceed commercial limits.
Does the MAX4493AUK+T support single-supply operation?
Yes, the MAX4493AUK+T operates from a single supply of +4.5V to +11V, as explicitly stated in the General Description and DC Electrical Characteristics tables. Its input common-mode range extends to VEE − 0.2V (i.e., ground when VEE = 0V), and its rail-to-rail output delivers full swing - enabling robust single-supply use in DAC buffers, sensor interfaces, and portable equipment without level-shifting circuitry.
What is the maximum capacitive load the MAX4493AUK+T can drive without oscillation?
The MAX4493AUK+T remains stable with capacitive loads up to 300pF when configured as a unity-gain buffer, as documented in the AC Electrical Characteristics table and Capacitive-Load Stability graph (Figure MAX4493-26). Driving larger loads requires an isolation resistor (e.g., 15Ω) in series with the output - a technique validated in the Applications Information section and demonstrated in Figure 1 of the datasheet.
Is the MAX4493AUK+T pin-compatible with other devices in the MAX4493/MAX4494/MAX4495 family?
No - the MAX4493AUK+T is a single-channel device in 5-pin SOT23, whereas MAX4494 (dual) uses 8-pin SOT23 and MAX4495 (quad) uses 14-pin TSSOP or SO packages. Pin counts, pinouts, and package footprints differ across the family; only the functional architecture and core specifications (GBW, supply range, rail-to-rail output) are shared. The MAX4493AUK+T pinout matches only the MAX4493AXK+T (SC70) in signal assignment, not physical compatibility.
What is the typical total harmonic distortion plus noise (THD+N) performance of the MAX4493AUK+T?
The MAX4493AUK+T achieves a typical THD+N of 0.002% at 1kHz with a 5Vp-p output swing into a 100kΩ load, as specified in both the Features list and AC Electrical Characteristics table. This value is measured under standard dual-supply conditions (±5V) and reflects the device's low-distortion capability for precision audio, test equipment, and high-fidelity signal conditioning applications.
MAX4493AUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 770µA
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4493AUK+T FAQ
1.How can I place an order for MAX4493AUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4493AUK+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 MAX4493AUK+T reliable?
The price and inventory of MAX4493AUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4493AUK+T is usually 5 days.
3.What payment methods are accepted for MAX4493AUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4493AUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4493AUK+T?
MAX4493AUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4493AUK+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 MAX4493AUK+T?
For technical support, including MAX4493AUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4493AUK+T requirements.
6.How does Aetrix verify that MAX4493AUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4493AUK+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 MAX4493AUK+T meets industry standards.
7.What is the process for return or replacement of MAX4493AUK+T?
All MAX4493AUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4493AUK+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 MAX4493AUK+T part is unused and in its original packaging.
Return procedure for MAX4493AUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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