This document describes the characteristics and typical application circuits for LM358/LM158/LM258/LM2904 dual operational amplifiers, including a specific…
The document provides an overview of the LM358 family of dual operational amplifiers. Key features include internal frequency compensation, high DC voltage gain (approx. 100dB), and a wide power supply range suitable for both single and dual power modes. The text details specifications such as low input bias current, low offset voltage, and a large output voltage swing from ground to Vcc-1.5V. This manual is written in Chinese.
| Internal Frequency Compensation | Yes |
|---|---|
| DC Voltage Gain | Approx. 100dB |
| Unity Gain Bandwidth | Approx. 1MHz |
| Single Supply Voltage Range | 3—30V |
| Dual Supply Voltage Range | ±1.5 to ±15V |
| Output Voltage Swing | 0 to Vcc-1.5V |
The device supports a wide single supply voltage range of 3 to 30V and dual supply modes from ±1.5V to ±15V.
The document describes an infrared detection alarm that detects human body radiation to trigger a sound alert.
The circuit uses an LM358 for high-gain, low-noise amplification as IC2.