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Analog Devices Inc./Maxim Integrated MAX4493AXK-T
- Part No.:
- MAX4493AXK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4493AXK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
The MAX4493AXK-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) and single-supply operation (+4.5V to +11V). It delivers 5MHz gain-bandwidth, 770µA quiescent current per amplifier, and output swing within 10mV of either rail (RL = 100kΩ), making it suitable for precision signal conditioning in battery-powered industrial sensors and DAC output buffering.
For engineers reviewing the MAX4493AXK-T datasheet, MAX4493AXK-T pinout, MAX4493AXK-T application, or MAX4493AXK-T equivalent, key selection criteria include its automotive-grade temperature range (–40°C to +125°C), 110dB open-loop gain, rail-to-rail input voltage range extending 200mV below VEE, and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4493AXK-T employs a bipolar process and features unity-gain stability with no phase reversal under overdriven inputs. Its input stage supports common-mode voltages from VEE – 0.2V to VCC – 1.5V, while the output stage drives loads up to 1kΩ with <200mV rail margin at full swing.
It achieves 0.002% THD+N at 1kHz and maintains stable operation with capacitive loads up to 300pF without external compensation-enabling direct interface with ADC inputs, reference buffers, and analog front-ends in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25V to ±5.5V dual or +4.5V to +11V single - supports wide-range industrial and automotive power rails |
| Quiescent Current | 770µA per amplifier - enables multi-year battery life in portable instrumentation |
| Gain-Bandwidth Product | 5MHz - sufficient for anti-aliasing filters and moderate-speed sensor signal amplification |
| Input Common-Mode Range | VEE – 0.2V to VCC – 1.5V - accommodates ground-referenced inputs in dual-supply systems |
| Rail-to-Rail Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range in low-voltage data acquisition |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures high DC accuracy in closed-loop configurations |
| THD+N | 0.002% at 1kHz - preserves signal fidelity in audio and precision measurement paths |
Pinout & Package
The MAX4493AXK-T is housed in a 5-pin SC70 package (package code X5-1), measuring 2.0mm × 1.25mm × 0.9mm, with exposed pad not electrically connected. This ultra-compact footprint supports high-density routing in compact modules and automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Noninverting Input | High-impedance node accepting signals down to VEE – 0.2V; requires low-noise layout |
| 2 (IN−) | Inverting Input | Differential input node; matched to IN+ for offset minimization in feedback networks |
| 3 (OUT) | Amplifier Output | Capable of sourcing/sinking 15mA; stable with ≤300pF load or ≥15Ω isolation resistor |
| 4 (VEE) | Negative Supply | Must be bypassed with 0.1µF capacitor to ground; defines lower rail for input/output swing |
| 5 (VCC) | Positive Supply | Must be bypassed with 0.1µF capacitor to ground; sets upper rail and bandwidth limit |
Key Features
| Feature | Design Value |
|---|---|
| No Phase Reversal on Overdrive | Prevents latch-up or erroneous output transitions when inputs exceed common-mode range |
| Rail-to-Rail Input Stage | Enables direct interface with 0V-referenced sensors and DACs without level-shifting circuitry |
| Automotive Temperature Rating | –40°C to +125°C operation validated per AEC-Q100 stress test requirements |
| Low Input Bias Current | 0.2–1µA typical - reduces error in high-impedance source applications like pH probes |
| Capacitive-Load Stability | Stable with up to 300pF directly on output - eliminates need for external compensation in ADC driver designs |
Applications
| Battery-Powered Systems | DAC Output Amplifiers |
|---|---|
Use Scenario: Portable gas detector using micro-power sensor front-end and lithium coin-cell supply. IC Role / Device Role / Timing Role: Signal-conditioning amplifier for electrochemical sensor output prior to 12-bit SAR ADC sampling. Use Value: 770µA quiescent current extends battery life beyond 5 years; rail-to-rail output ensures full utilization of ADC input range. | Use Scenario: Industrial PLC analog output module generating 0–10V control signals from 16-bit DAC. IC Role / Device Role / Timing Role: Precision buffer isolating DAC core from variable load impedance and noise coupling. Use Value: 110dB open-loop gain and 0.002% THD+N preserve DAC monotonicity and spectral purity across temperature. |
| Industrial Control Systems | Voltage Reference Generators |
Use Scenario: Motor drive current-sense amplifier feeding isolated sigma-delta modulator. IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage amplifying shunt voltage before isolation barrier. Use Value: 3µV/°C input offset drift and 8nV/√Hz input noise maintain sub-0.1% current measurement accuracy over –40°C to +125°C. | Use Scenario: High-stability 2.5V reference buffer for precision ADC reference input in medical ECG front-end. IC Role / Device Role / Timing Role: Low-noise, low-output-impedance follower driving ADC REF pin with minimal settling error. Use Value: Rail-to-rail output swing and 10mV rail margin ensure full 2.5V reference delivery even with ±5V supplies and load transients. |
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 | CMOS input (vs. bipolar), higher input impedance but lower GBW (1MHz), 65°C max operating temp | Not rated for automotive use; unsuitable for >85°C industrial enclosures | Select only for cost-sensitive consumer applications where temperature and precision are secondary |
| TSV911ICT | RRIO, 8MHz GBW, 160µA IQ, but only specified to +105°C and lacks AEC-Q100 validation | Lacks extended temperature validation; may require derating in automotive under-hood locations | Consider for non-automotive industrial designs needing higher speed and lower power, with thermal margin |
Compared with LMV321IDBVR and TSV911ICT, the MAX4493AXK-T provides verified automotive-grade reliability, superior open-loop gain (110dB vs. ~90dB), and guaranteed performance across –40°C to +125°C-making it the preferred choice for safety-critical or thermally demanding signal chains where long-term parametric stability is mandatory.
Availability
MAX4493AXK-T is available at Aetrix Electronics and suitable for battery-powered systems, DAC output amplifiers, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4493AXK-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, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.
The MAX4493AXK-T belongs to Maxim's SC70 low-power op amp family, engineered for rail-to-rail performance in space-constrained, thermally demanding systems where supply efficiency and DC accuracy are critical.
FAQ
What is the operating temperature range of the MAX4493AXK-T?
The MAX4493AXK-T is rated for continuous operation from –40°C to +125°C, meeting automotive AEC-Q100 Grade 1 requirements. This range is fully validated across all electrical parameters including input offset voltage, gain-bandwidth, and output swing-no derating is required for use in engine control units or industrial motor drives.
Does the MAX4493AXK-T support single-supply operation?
Yes, the MAX4493AXK-T operates from a single supply of +4.5V to +11V. Its input common-mode range extends to VEE – 0.2V, enabling ground-referenced inputs even when VEE = 0V. The rail-to-rail output ensures full dynamic range utilization-for example, delivering 0–4.5V output with a +4.5V supply and 100kΩ load.
What is the maximum capacitive load the MAX4493AXK-T can drive without oscillation?
The MAX4493AXK-T remains stable with capacitive loads up to 300pF when configured as a unity-gain buffer. For larger loads (e.g., ADC input capacitance >300pF), a 15Ω isolation resistor in series with the output restores stability without significant overshoot, as confirmed in the device's Typical Operating Characteristics (Figure 23).
Is the MAX4493AXK-T pin-compatible with other op amps in the MAX449x family?
No-the MAX4493AXK-T (SC70-5) has a unique 5-pin pinout distinct from the 8-pin MAX4494 and 14-pin MAX4495 variants. While functional behavior is consistent across the family, PCB layout and footprint must be designed specifically for the SC70-5 package used by the MAX4493AXK-T.
What is the typical input offset voltage drift of the MAX4493AXK-T over temperature?
The MAX4493AXK-T exhibits a typical input offset voltage drift of 3µV/°C across –40°C to +125°C. This low drift, combined with a maximum 10mV initial offset, ensures minimal gain error accumulation in precision integrators or long-duration sensor signal conditioning circuits.
MAX4493AXK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 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:
- SC-70-5
MAX4493AXK-T FAQ
1.How can I place an order for MAX4493AXK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4493AXK-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 MAX4493AXK-T reliable?
The price and inventory of MAX4493AXK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4493AXK-T is usually 5 days.
3.What payment methods are accepted for MAX4493AXK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4493AXK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4493AXK-T?
MAX4493AXK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4493AXK-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 MAX4493AXK-T?
For technical support, including MAX4493AXK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4493AXK-T requirements.
6.How does Aetrix verify that MAX4493AXK-T is sourced from the original manufacturer or authorized distributors?
All MAX4493AXK-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 MAX4493AXK-T meets industry standards.
7.What is the process for return or replacement of MAX4493AXK-T?
All MAX4493AXK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4493AXK-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 MAX4493AXK-T part is unused and in its original packaging.
Return procedure for MAX4493AXK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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