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The LM387 is a dual preamplifier for the amplification of low-level signals in applications requiring optimum noise performance. Each of the two amplifiers is completely independent, with an internal power supply decoupler-regulator, providing 110 dB supply rejection and 60 dB channel separation. Other outstanding features include high gain (104 dB), large output voltage swing (VCC b 2V)p-p, and wide power bandwidth (75 kHz, 20 Vp-p). The LM387A is a selected version of the LM387 that has lower noise in a NAB tape circuit and can operate on a larger supply voltage.
LM387 Pinout
LM387 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | NON-INV-IN 1 | Non-Inverting Input Pin 1 |
| 2 | INV-IN 1 | Inverting Input Pin 1 |
| 3 | GND | Ground Pin |
| 4 | OUTPUT 1 | Output Pin 1 |
| 5 | OUTPUT 2 | Output Pin 2 |
| 6 | VCC | Collector supply voltage |
| 7 | INV-IN 2 | Inverting Input Pin 2 |
| 8 | NON-INV-IN 2 | Non-Inverting Input Pin 2 |
LM387 Key Features
- Low noise 1.0 mV total input noise
- High gain 104 dB open loop
- Single supply operation
- Wide supply range LM387 9 to 30V
- Power supply rejection 110 dB
- Large output voltage swing (VCC b 2V)p-p
- Wide bandwidth 15 MHz unity gain
- Power bandwidth 75 kHz, 20 Vp-p
- Internally compensated
- Short circuit protected
Application
- Low-level signals
You can download this datasheet for LM387 Low Noise Dual Pre-Amplifier- Datasheet from the link given below:
