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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 16VQFN
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：4
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：7mV @ 5V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：2mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 105°C
- Package / Case：16-VFQFN
- Mounting Type：Surface Mount
- Supplier Device Package：16-VQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The BA2901SKN-E2 is a quad analog comparator manufactured by ROHM Semiconductor. It features an operating supply voltage range of +2.0V to +36.0V (single) or ±1.0V to ±18.0V (split). The device provides four independent high-gain voltage comparators with open collector outputs. Key electrical parameters include a maximum input offset voltage of 7mV, a typical supply current of 0.8mA, and a response time of 1.3µs. It operates within a temperature range of -40°C to +105°C and is housed in a SOP-14 package.
Feature Summary
- Operates with single or split power supplies across a wide voltage range
- Features ground sense capability for both inputs and outputs
- Includes internal ESD protection circuits
- Provides standard pin assignments for general-purpose applications
Applications
- General use
- Current monitor
- Battery monitor
- Multi-vibrator
Procurement Notes
Verify the specific suffix 'SKN' against official ROHM documentation, as it may indicate a specialized packaging or variant not explicitly detailed in the provided datasheet excerpt. Confirm availability status, as some BA2901 variants are marked as End-of-Life or Not Recommended for New Designs. Ensure the ordering code matches the required SOP-14 package and tape-and-reel specifications.
Selection Notes
Select this component when a quad comparator with low supply current and wide voltage tolerance is required. The open-collector output necessitates an external pull-up resistor. Verify that the 7mV input offset voltage meets system accuracy requirements. Consider thermal dissipation limits if operating near the maximum junction temperature.
Part Context
This part belongs to the BA2901 series of general-purpose analog comparators from ROHM. It integrates four independent channels in a single chip, offering a cost-effective solution for multi-channel comparison tasks. The series is designed for broad industrial and consumer applications requiring reliable voltage threshold detection.
Replacement Considerations
Direct substitutes include BA2901SF-E2 and BA2901F-E2. These alternatives share similar quad-channel configurations and electrical characteristics but may differ in package type or temperature rating. Verify pin compatibility and performance specs before substitution.
