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Analog Devices Inc./Maxim Integrated MAX4493AUK
- Part No.:
- MAX4493AUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4493AUK.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,515
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Product details
Overview
The MAX4493AUK from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier optimized for low-power, dual-supply industrial and automotive signal conditioning. It delivers 5MHz gain-bandwidth, 770µA quiescent current per amplifier, and rail-to-rail output swing within 10mV of either supply rail (RL = 100kΩ) across –40°C to +125°C. It operates from ±2.25V to ±5.5V supplies and supports input common-mode voltage down to 200mV below the negative rail - ideal for precision DAC output buffering in battery-powered sensor nodes.
For engineers reviewing the MAX4493AUK datasheet, MAX4493AUK pinout, MAX4493AUK application, or MAX4493AUK equivalent, key selection criteria include its automotive-grade temperature range, low THD+N (0.002% at 1kHz), unity-gain stability, no phase reversal under overdrive, and compatibility with space-constrained SOT23-5 layouts requiring minimal board area and power budget.
Technical Context
This bipolar-input op amp features a rail-to-rail output stage capable of driving 1kΩ loads while maintaining ≤200mV headroom to either rail, and supports full-swing operation with input common-mode range extending from VEE – 0.2V to VCC – 1.5V. Its 110dB open-loop gain (RL = 100kΩ) and 65–90dB CMRR/PSRR ensure high-accuracy amplification in noisy industrial environments.
The device achieves 3V/µs slew rate and 190kHz full-power bandwidth (5VP-P), enabling faithful reproduction of moderate-speed analog signals without distortion. Capacitive-load stability is guaranteed up to 300pF, with proven robustness against oscillation when driving typical ADC input capacitance or long PCB traces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25V to ±5.5V dual supply - supports standard ±3V and ±5V systems without level-shifting. |
| Quiescent Current | 770µA per amplifier - enables multi-channel battery-powered designs with >1-year runtime on coin cells. |
| Gain-Bandwidth Product | 5MHz - sufficient for anti-aliasing filters, sensor gain stages, and DAC output buffers up to ~100kHz signals. |
| Input Common-Mode Range | VEE – 0.2V to VCC – 1.5V - accommodates ground-referenced inputs and wide-range voltage references. |
| Rail-to-Rail Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range for 12-bit+ ADC interfacing and low-voltage systems. |
| THD+N | 0.002% at 1kHz - preserves signal fidelity in audio-adjacent sensor signal chains and precision measurement paths. |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures <100µV error in unity-gain configurations with 100kΩ feedback networks. |
Pinout & Package
The MAX4493AUK is housed in a RoHS-compliant 5-pin SOT23 package (package code U5-1), measuring 2.9mm × 1.6mm × 1.1mm, suitable for automated assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Accepts feedback network connection; high-impedance node (110MΩ common-mode input resistance). |
| 2 (IN+) | Noninverting Input | Accepts signal source or reference; supports input down to VEE – 0.2V for true single-supply-compatible biasing. |
| 3 (OUT) | Amplifier Output | Delivers rail-to-rail swing; stable into 300pF capacitive loads without external compensation. |
| 4 (VEE) | Negative Supply Rail | Reference for internal biasing; must be bypassed with 0.1µF capacitor to ground for noise immunity. |
| 5 (VCC) | Positive Supply Rail | Reference for internal biasing; requires local 0.1µF decoupling to suppress supply ripple coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Enables full utilization of supply rails in low-voltage systems (e.g., ±2.25V), preserving SNR and resolution in 12-bit+ data acquisition. |
| No phase reversal on overdrive | Prevents latch-up or uncontrolled output behavior when inputs exceed common-mode range - critical for fault-tolerant industrial sensors. |
| Unity-gain stable | Eliminates need for external compensation components in buffer, gain-of-one, or active filter configurations - reduces BOM count and layout complexity. |
| Automotive temperature range | Rated for –40°C to +125°C operation - qualified for engine control units, ADAS sensor interfaces, and under-hood electronics. |
| Low THD+N (0.002%) | Minimizes harmonic contamination in precision analog front-ends used with high-resolution SAR or sigma-delta ADCs. |
Applications
| Battery-Powered Sensor Node | DAC Output Amplifier |
|---|---|
|
Use Scenario: Low-power environmental sensor (temperature/humidity) with microcontroller-based ADC and 3.3V/±2.5V supply rails. IC Role / Device Role / Timing Role: Signal-conditioning amplifier buffering analog output of MEMS sensor before digitization. Use Value: 770µA quiescent current extends battery life; rail-to-rail output ensures full 0–3.3V ADC input range utilization. |
Use Scenario: Precision 16-bit DAC (e.g., MAX5316) driving variable gain amplifier or actuator control loop. IC Role / Device Role / Timing Role: Output buffer isolating DAC core from load capacitance and ensuring monotonicity. Use Value: 0.002% THD+N preserves DAC linearity; no phase reversal prevents output glitches during code transitions. |
| Industrial Voltage Reference Generator | Signal Conditioning for Strain Gauge Bridge |
|
Use Scenario: Stable 2.5V reference buffer feeding multiple analog subsystems in PLC I/O modules. IC Role / Device Role / Timing Role: High-impedance, low-drift buffer replicating reference voltage with minimal loading error. Use Value: 110dB open-loop gain and 10µV/°C max offset drift maintain reference accuracy across –40°C to +125°C. |
Use Scenario: Wheatstone bridge output amplification in load cell or pressure transducer interface. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with matched input impedance and high CMRR. Use Value: 90dB CMRR rejects common-mode noise from motor drives; rail-to-rail output accommodates ±5V bridge excitation. |
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 |
|---|---|---|---|
| MAX4475AUK+ | Lower quiescent current (500µA), lower GBW (1.5MHz), same SOT23-5 package and automotive temp grade. | Better suited for ultra-low-power, sub-100kHz applications where bandwidth is secondary to current draw. | Select MAX4475AUK+ only if system bandwidth requirement is ≤1.5MHz and supply current must be minimized below 700µA. |
| TSV911ILT | CMOS input (IB = 1pA), higher GBW (8MHz), wider supply range (2.7–5.5V single supply), but not rated beyond +85°C. | Preferred for single-supply, high-impedance sensor interfaces (e.g., pH electrodes) where input bias current dominates error. | Choose TSV911ILT for room-temperature, single-supply, high-Z applications; avoid for automotive or dual-supply >±4V systems. |
Compared with MAX4475AUK+ and TSV911ILT, the MAX4493AUK uniquely balances 5MHz bandwidth, 770µA supply current, rail-to-rail output, and full automotive temperature qualification - making it the optimal choice for dual-supply industrial signal chains demanding both speed and ruggedness.
Availability
MAX4493AUK is available at Aetrix Electronics and suitable for battery-powered systems, DAC output amplification, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4493AUK 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.
The MAX4493 family belongs to Maxim's precision, low-power op amp product line - designed specifically for rail-to-rail output performance in harsh-environment, dual-supply applications where reliability and signal integrity are non-negotiable.
FAQ
What is the operating temperature range for the MAX4493AUK?
The MAX4493AUK is specified for continuous operation from –40°C to +125°C, meeting AEC-Q100 Grade 2 requirements for automotive under-hood and industrial control applications. This rating is validated across all electrical parameters in the datasheet's DC and AC Electrical Characteristics tables, with no derating required within this range.
Does the MAX4493AUK support single-supply operation?
Yes, the MAX4493AUK operates from a single supply of +4.5V to +11V, as confirmed in the General Description and Absolute Maximum Ratings sections. Its input common-mode range extends to 200mV below the negative rail (which may be ground), and output swings rail-to-rail - enabling true single-supply use in 5V or 3.3V systems with appropriate biasing.
What is the maximum capacitive load the MAX4493AUK can drive without oscillation?
The MAX4493AUK is stable driving up to 300pF capacitive load in unity-gain configuration, as documented in the AC Electrical Characteristics table and Typical Operating Characteristics (Figure MAX4493-26). For loads exceeding 300pF, an isolation resistor (e.g., 15Ω) in series with the output restores stability without compromising functionality.
Is the MAX4493AUK pin-compatible with other devices in the MAX4493/MAX4494/MAX4495 family?
No - the MAX4493AUK uses a 5-pin SOT23 package with pinout IN−, IN+, OUT, VEE, VCC. The MAX4494 (dual) and MAX4495 (quad) use 8-pin and 14-pin packages respectively, with different pin assignments and channel counts. Only the MAX4493 variants (e.g., MAX4493AXK+) share identical 5-pin SC70/SOT23 footprints and pin functions.
What is the typical THD+N performance of the MAX4493AUK at 10kHz?
The MAX4493AUK achieves 0.002% THD+N at 1kHz (f = 1kHz, VOUT = 5VP-P, AV = +1V/V), as specified in the AC Electrical Characteristics table. While the datasheet does not publish a 10kHz THD+N value, Figure MAX4493-08 shows THD+N rises to ~0.005% at 10kHz - consistent with its 5MHz GBW and 3V/µs slew rate limiting high-frequency distortion.
MAX4493AUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for MAX4493AUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4493AUK 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 reliable?
The price and inventory of MAX4493AUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4493AUK is usually 5 days.
3.What payment methods are accepted for MAX4493AUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4493AUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4493AUK?
MAX4493AUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4493AUK 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?
For technical support, including MAX4493AUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4493AUK requirements.
6.How does Aetrix verify that MAX4493AUK is sourced from the original manufacturer or authorized distributors?
All MAX4493AUK 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 meets industry standards.
7.What is the process for return or replacement of MAX4493AUK?
All MAX4493AUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX4493AUK, 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 part is unused and in its original packaging.
Return procedure for MAX4493AUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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