AS331KTR-G1

Data Sheet LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331 General Description Features The AS331 consists of a single precision voltage com- Wide Supply Voltage Range parator with a typical input offset voltage of 1.0mV - Single Supply: 2V to 36V and high voltage gain. It is specifically designed to - Dual Supplies: 1V to 18V operate from a single power supply over wide range of Low Supply Current at V =5V: 0.4mA CC voltages. Operation from split power supply is also Low Input Bias Current: 25nA (Typical) possible and the low power supply current drain is Low Input Offset Current:5nA (Typical) independent of the magnitude of the power supply Low Input Offset Voltage: 1mV (Typical) voltage. Input Common Mode Voltage Range Includes The AS331 is available in standard SOT-23-5 package. Ground Differential Input Voltage Range Equals to the Power Supply Voltage Low Output Saturation Voltage at 4mA: 200mV (Typical) Open Collector Output Applications Battery Charger Cordless Telephone Switching Power Supply DC-DC Module PC Motherboard Communication Equipment SOT-23-5 Figure 1. Package Type of AS331 May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR AS331 Pin Configuration K Package (SOT-23-5) INPUT- 1 5 VCC GND 2 INPUT+ OUTPUT 34 Figure 2. Pin Configuration of AS331 (Top View) Functional Block Diagram VCC 5 Q2 Q3 3 INPUT+ Q1 Q4 4 OUTPUT 1 INPUT- Q8 Q7 Q5 Q6 2 GND Figure 3. Functional Block Diagram of AS331 May. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2