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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR SOT23-8
- Series：Beyond-the-Rails™
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Bulk
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：1.8V ~ 5.5V
- Voltage - Input Offset (Max)：5mV @ 5V
- Current - Input Bias (Max)：0.001µA @ 5V
- Current - Output (Typ)：50mA
- Current - Quiescent (Max)：2µA
- CMRR, PSRR (Typ)：80dB PSRR
- Propagation Delay (Max)：31µs
- Hysteresis：4mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：SOT-23-8
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-8
- Grade：-
- Qualification：-
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Overview
The MAX9020EKA+T is a dual nanoPower comparator in an 8-pin SOT-23 package. It operates on a supply voltage range of 1.8V to 5.5V with a typical supply current of 0.85µA at 1.8V and 1.7µA at 5V. The device features an open-drain output stage, input offset voltage of 5mV maximum, and internal 4mV hysteresis. Input common-mode voltage extends 200mV beyond the rails.
Feature Summary
- Ultra-low power consumption suitable for battery-operated systems
- Beyond-the-Rails inputs allow operation outside supply limits
- Open-drain output stage supports mixed-voltage logic interfacing
- Internal hysteresis prevents output oscillation during slow transitions
Applications
- Two-cell battery monitoring and management
- Threshold detectors and discriminators
- Window detectors
- Sensing at ground or supply line
- Telemetry and remote systems
Procurement Notes
Verify the specific suffix 'EKA+T' against the manufacturer's official ordering guide to confirm the package type, temperature grade, and tape-and-reel quantity. Confirm RoHS compliance status as indicated by the '+' symbol in the part number. Ensure the open-drain output configuration matches the system design requirements before procurement.
Selection Notes
Select this component when low quiescent current is critical for extending battery life in portable devices. The open-drain output requires an external pull-up resistor; ensure the selected resistor value aligns with the desired switching speed and logic voltage levels. Verify that the input signal range remains within the extended Beyond-the-Rails limits for proper functionality.
Part Context
This device belongs to the MAX9015–MAX9020 family of nanoPower comparators manufactured by Analog Devices (Maxim Integrated). The family shares identical electrical characteristics but varies by channel count, output stage type, and reference availability. The MAX9020 specifically denotes the dual-channel variant with an open-drain output and no internal voltage reference.
Replacement Considerations
Direct functional replacements include other members of the MAX9015–MAX9020 series such as the MAX9019, provided the push-pull output does not conflict with the circuit design. Cross-reference with the MAX9117–MAX9120 series if a smaller SC70 package is required instead of the SOT-23 form factor.
FAQ
Does the MAX9020 include an internal voltage reference?
No, the MAX9020 is a dual comparator without an internal reference. Variants like the MAX9017 include a 1.24V reference.
What is the purpose of the Beyond-the-Rails input feature?
It allows the input common-mode voltage to extend 200mV beyond the positive and negative supply rails, enabling sensing applications near the supply lines.
How does the open-drain output affect circuit design?
The open-drain output requires an external pull-up resistor to VCC or another voltage source to define the high logic level and limit current.
