MAX9120EXK+ Analog Devices Integrated Circuit (SOT23 (5-Pin)) In Stock
The MAX9120EXK+ is a nanopower, beyond-the-rails single comparator operating from a 1.6 V supply in a 5-pin SC70 package. It features 1 nA typical bias current, 10 mV maximum input offset voltage, and rail-exceeding input range, ideal for ultra-low-power battery monitors and threshold-detection circuits.
- Manufacturer
- Analog Devices
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MAX9120EXK+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX9120EXK+?
- Nanopower design with 1 nA typical bias current enabling continuous monitoring in energy-critical applications
- Beyond-the-rails input range allowing inputs to exceed the supply voltage for flexible threshold detection
- 1.6 V minimum supply operation compatible with single-cell or low-voltage battery-powered systems
- Single comparator function in a 5-pin SC70 package for minimal PCB footprint
- Maximum input offset voltage of 10 mV for predictable threshold accuracy in voltage-detection circuits
- Lead-free packaging per JESD-609 e3 classification for RoHS-aligned environmental compliance
What is MAX9120EXK+ used for?
The MAX9120EXK+ is used in battery-powered handheld devices, IoT sensor nodes, and wearable electronics where a continuously active voltage threshold detector is needed without measurable impact on battery life due to its nanopower bias current. Its beyond-the-rails input capability also makes it suitable for overvoltage monitors, low-battery alert circuits, and power-sequencing controllers that must sense voltages exceeding the 1.6 V supply rail.
What are the specifications of MAX9120EXK+?
| Manufacturer Package Code | 5-SC70-N/A |
| Date Of Intro | 2002-04-01 |
| YTEOL | 8.5 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.002 µA |
| Bias Current-Max (IIB) @25C | 0.001 µA |
| Input Offset Voltage-Max | 10000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Response Time-Nom | 45000ns |
| Supply Current-Max | 0.0012mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX9120EXK+ datasheet?
MAX9120EXK+ Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX9120EXK+?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What makes MAX9120EXK+ suitable for always-on battery monitoring in IoT sensor nodes?
MAX9120EXK+ draws only 1 nA typical bias current at 25°C, which is negligible compared to the self-discharge rate of a coin cell; even in a continuously active voltage-monitoring role, the comparator consumes microamp-level power averaged over a battery lifetime, making it practical for IoT nodes that must detect a threshold event without waking a microcontroller.
What does 'beyond-the-rails' mean for MAX9120EXK+, and in what circuit scenarios is it important?
Beyond-the-rails means MAX9120EXK+ can accept input voltages that exceed the supply voltage by a small margin; this is important in overvoltage detection circuits where the signal being monitored may rise above the 1.6 V to 5.5 V supply rail, such as in a resistor-divider battery monitor measuring a 4.2 V Li-ion cell from a 3.3 V supply without input clamping diodes.
How does the 10 mV maximum input offset of MAX9120EXK+ affect threshold accuracy in a low-battery cutoff design?
A 10 mV maximum input offset voltage means the actual trip threshold can deviate by up to 10 mV from the designed set point; for a 3 V cutoff circuit built with a 100 kΩ resistor divider, this translates to roughly ±20 mV uncertainty at the battery terminal, which is acceptable for most low-battery alert applications but should be accounted for in tight voltage-window designs.
What PCB footprint does the SC70 package of MAX9120EXK+ require, and how does it compare to the SOT23 form factor?
The 5-pin SC70 package measures approximately 2.0 mm x 1.25 mm, which is roughly 40% smaller in board area than a standard SOT-23 package at 3.0 mm x 1.75 mm; this size advantage is significant for wearable or coin-sized IoT designs where every square millimeter of PCB area is at a premium.
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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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