LM2902 概述

The LM2902 consist of four independent high-gain frequency-compensated operational amplifiers that are designed specifically 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 LM2902), 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 LM2902 include transducer amplifiers, dc amplification blocks, and all the conventional operational-amplifier circuits that now can be more easily implemented in single-supply-voltage systems. For example, the LM2902 can be operated directly from the standard 5-V supply that is used in digital systems and provides the required interface electronics, without requiring additional ±15-V supplies.

LM2902 特性

• 2-kV ESD Protection for:
  • LM224K, LM224KA
  • LM324K, LM324KA
  • LM2902K, LM2902KV, LM2902KAV
• Wide Supply Ranges
  • Single Supply: 3 V to 32 V (26 V for LM2902)
  • Dual Supplies: ±1.5 V to ±16 V (±13 V for LM2902)
• Low Supply-Current Drain Independent of Supply Voltage: 0.8 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 LM2902)
• Open-Loop Differential Voltage Amplification: 100 V/mV Typ
• Internal Frequency Compensation