LM2904 概述

The LM2904 consist of two independent, high-gain, frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages. Operation from split supplies also is possible if the difference between the two supplies is 3 V to 32 V (3 V to 26 V for the LM2904), and V_CC is at least 1.5 V more positive than the input common-mode voltage. The low supply-current drain is independent of the magnitude of the supply voltage.

Applications of the LM2904 include transducer amplifiers, dc amplification blocks, and all the conventional operational amplifier circuits that now can be implemented more easily in single-supply-voltage systems. For example, these devices can be operated directly from the standard 5-V supply used in digital systems and easily provide the required interface electronics without additional ±5-V supplies.

LM2904 特性

• Wide Supply Range:
  • Single Supply: 3 V to 32 V (26 V for LM2904)
  • or Dual Supplies: ±1.5 V to ±n;16 V (±13 V for LM2904)
• Low Supply-Current Drain Independent of Supply Voltage: 0.7 mA Typ
• Common-Mode Input Voltage Range Includes Ground, Allowing Direct Sensing Near Ground
• Low Input Bias and Offset Parameters:
  • Input Offset Voltage: 3 mV Typ
       A Versions: 2 mV Typ
  • Input Offset Current: 2 nA Typ
  • Input Bias Current: 20 nA Typ
       A Versions: 15 nA Typ
• Differential Input Voltage Range Equal to Maximum-Rated Supply Voltage: ±32 V (26 V for LM2904)
• Open-Loop Differential Voltage Amplification: 100 V/mV Typ
• Internal Frequency Compensation