MAX5491WC30000+T Analog Devices Resistor (SOT23 (3-Pin)) In Stock
Analog Devices MAX5491WC30000+T is a precision-matched resistor-divider network with 300 kΩ total resistance, 0.1% ratio accuracy, and 5 ppm/°C tracking TCR in a compact SOT-23 package. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MAX5491WC30000+T Datasheet PDF
- Category
- Resistor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision 1:1 ratio matching to 0.1% accuracy eliminates manual trimming in voltage-divider circuits
- Dual matched 150 kΩ resistors with 5 ppm/°C ratio tracking TCR for stable gain over temperature
- SOT-23 footprint measuring 3 mm × 1.75 mm minimizes board area in space-constrained precision analog designs
- Total resistance of 300 kΩ with ±1% absolute tolerance suits low-power signal-conditioning front ends
Applications
The MAX5491WC30000+T is used to set precise gain ratios in instrumentation amplifiers, ADC reference dividers, and precision voltage-threshold detectors where ratio accuracy matters more than absolute resistance value. Its 5 ppm/°C tracking TCR keeps the divider ratio stable across the –40°C to +125°C industrial temperature range without adjustment. The SOT-23 package makes it ideal for handheld test instruments and medical sensor front ends where PCB space is at a premium.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What ratio accuracy does the MAX5491WC30000+T provide, and how does it compare to using two discrete 1% resistors?
The MAX5491WC30000+T provides a ratio accuracy of 0.1%, compared to a worst-case 2% ratio error when two separate 1% resistors are used. The tight matching is achieved by fabricating both 150 kΩ elements on the same die, so they track each other to 5 ppm/°C over the –40°C to +125°C range rather than drifting independently.
Which precision analog circuits benefit most from the MAX5491WC30000+T's matched resistor pair?
Instrumentation amplifier gain-setting networks, ADC reference voltage dividers, and Wheatstone bridge completion circuits benefit most because all require resistor ratios accurate to better than 0.1%. Using the MAX5491WC30000+T's on-chip matched 150 kΩ pair reduces gain error in a difference amplifier stage to under 0.1%, which would require hand-selection of discrete 0.1% resistors to match.
How small is the MAX5491WC30000+T package, and what is its thermal operating range?
The MAX5491WC30000+T is housed in a 3-pin SOT-23 package measuring approximately 3 mm × 1.75 mm with a 0.95 mm pitch, occupying less than 6 mm² of board area. It operates from –40°C to +125°C, covering both commercial and industrial temperature grades without derating.
When would a designer choose MAX5491WC30000+T over MAX5490 for a battery-powered sensor node?
A designer would choose MAX5491WC30000+T when the divider ratio must remain stable to 0.1% over the full battery temperature range, and when the 300 kΩ total resistance is appropriate for the source impedance. The higher 300 kΩ resistance draws only 16 µA at 5 V, making it more power-efficient than lower-resistance dividers and well suited for battery-powered IoT sensor nodes.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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