AS331

Data Sheet LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR General Description The AS331 consists of a single precision voltage comparator with a typical input offset voltage of 1.0mV and high voltage gain. It is specifically designed to operate from a single power supply over wide range of voltages. Operation from split power supply is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. The AS331 is available in standard SOT-23-5 package. · · · AS331 Features · Wide Supply Voltage Range - Single Supply: 2V to 36V - Dual Supplies: ±1V to ±18V Low Supply Current at VCC=5V: 0.4mA Low Input Bias Current: 25nA (Typical) Low Input Offset Current:5nA (Typical) Low Input Offset Voltage: 1mV (Typical) Input Common Mode Voltage Range Includes 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 Oct 2009 Rev. 1. 3 1 BCD Semiconductor Manufacturing Limited Data Sheet LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR Pin Configuration K Package (SOT-23-5) AS331 INPUTGND INPUT+ 1 2 3 5 VCC 4 OUTPUT Figure 2. Pin Configuration of AS331 (Top View) Functional Block Diagram VCC 5 INPUT+ INPUT- 3 1 Q2 Q1 Q3 Q4 4 Q8 Q7 OUTPUT Q5 GND Q6 2 Figure 3. Functional Block Diagram of AS331 Oct 2009 Rev. 1. 3 2 BCD Semiconductor Manufacturing Limited Data Sheet LOW POWER LOW OFFSET VOLTAGE SINGLE COMPARATOR Ordering Information AS331 Circuit Type Package K: SOT-23-5 Package SOT-23-5 Temperature Range -40 to 85oC Part Number Lead Free AS331KTR-E1 Green AS331KTR-G1 Marking ID Lead Free EEA Green GEA Packing Type Tape & Reel AS331 E1: Lead Free G1: Green TR: Tape and Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package. Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Differential Input Voltage Input Voltage Input Current (VIN