Contents
hide
The NE571 is a versatile low-cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expander. Each channel has a full-wave rectifier to detect the average value of the signal, a linearized temperature-compensated variable gain cell, and an operational amplifier. The NE571 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems.
NE571 Pinout
NE571 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | RECT CAP 1 | Rectifier Capacitor Pin 1 |
| 2 | RECT IN 1 | Rectifier Input Pin 1 |
| 3 | AG CELL IN 1 | Accuracy Gain Cell Pin 1 |
| 4 | GND | Ground Pin |
| 5 | INV-IN 1 | Inverting Input Pin 1 |
| 6 | RES, R3 1 | Resistor, R3 Pin 1 |
| 7 | OUT 1 | Output Pin 1 |
| 8 | THD TRIM 1 | Threshold Trim Pin 1 |
| 9 | THD TRIM 2 | Threshold Trim Pin 2 |
| 10 | OUT 2 | Output Pin 2 |
| 11 | RES, R3 2 | Resistor, R3 Pin 2 |
| 12 | INV-IN 2 | Inverting Input Pin 2 |
| 13 | VCC | Supply Voltage Pin |
| 14 | AG CELL IN 2 | Accuracy Gain Cell Pin 1 |
| 15 | RECT IN 2 | Rectifier Input Pin 2 |
| 16 | RECT CAP 2 | Rectifier Capacitor Pin 2 |
NE571 Features
- Complete compressor and expander in one IC chip
- Temperature compensated
- Greater than 110dB dynamic range
- Operates down to 6VDC
- System levels adjustable with external components
- Distortion may be trimmed out
- Dynamic noise reduction systems
- Voltage-controlled amplifier
Application
- Cellular radio
- High level limiter
- Low level expander noise gate
- Dynamic filters
- CD Player
You can download this datasheet for NE571 Compandor Subscriber – Datasheet from the link given below:
