TP1946 - 1.8V Micropower, RRIO, Open-Drain Output, Dual Comparators
Down to 1.8V Supply Voltage: 1.8V to 5.5V
Low Supply Current: 49 μA per Channel
High-to-Low Propagation Delay: 70 ns
Offset Voltage: ±3.0 mV Maximum
Offset Voltage Temperature Drift: 0.3 μV/°C
Input Bias Current: 6 pA Typical
Input Common-Mode Range Extends 200 mV
Internal Hysteresis Ensures Clean Switching
No Phase Reversal for Overdriven Inputs
Open-Drain Output for Maximum Flexibility
Green, Space-Saving SC70 Package Available
- Typical Application
Typical Application of the TP1945/6/8 Comparators
The 3PEAK TP194x single/dual/quad micropower comparators feature rail-to-rail inputs and outputs, and fully specified single-supply operation down to +1.8V. The devices draw only 49μA per comparator while reaching 70ns high-to-low response time, and have open-drain outputs that can be pulled beyond V– to 6V (max) above ground for maximum flexibility. In addition, their rail-to-rail input common-mode voltage range makes these comparators suitable for ultra-low-voltage operation. The input commonmode voltage range extends 200mV below ground and 200mV above supply, allowing both ground and supply sensing. The internal input hysteresis eliminates output switching due to internal input noise voltage, reducing current draw.
A +1.8V to +5.5V single-supply operating voltage range makes the TP194x family of comparators ideal for 2-cell battery-powered applications.
The TP1945 single comparator is available in tiny SC70 package for space-conservative designs. All chips are specified for the temperature range of –40°C to +85°C.
Sensing at Ground or Supply Line
Peak and Zero-crossing Detectors
Logic Level Shifting or Translation
Clock and Data Signal Restoration
Telecom, Portable Communications
Portable and Battery Powered Systems