LM339DT 模拟比较器 ST

LM339DT

模拟比较器 Low-power quad voltage comparators

Description LM339DT

This family of devices consists of four independent precision-voltage comparators with an offset voltage specification as low as 2 mV maximum for LM339A, LM239A, and LM139A. Each comparator has been designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible.

These comparators also have a unique characteristic in that the input common mode voltage range includes ground even though operated from a single power supply voltage.

Features LM339DT

• Wide single supply voltage range or dual supplies for all devices: +2 to +36 V or ±1 V to ±18 V

• Very low supply current (1.1 mA) independent of supply voltage

• Low input bias current: 25 nA typ

• Low input offset current: ±5 nA typ

• Low input offset voltage: ±1 mV typ

• Input common-mode voltage range includes ground

• Low output saturation voltage: 250 mV typ; (ISINK = 4 mA)

• Differential input voltage range equal to the supply voltage

• TTL, DTL, ECL, MOS, CMOS compatible outputs

Operating conditions (Tamb = 25 °C)  LM339DT

Symbol Parameter Value Unit  VCC Supply voltage 2 to 32  ±1 to ±16 V  VICM Common mode input voltage range 0 to (VCC+ - 1.5) V  Toper  Operating free-air temperature range  – LM139, LM139A  – LM239, LM239A  – LM339, LM339A  -55, +125  -40, +105  0, +70  °C