Philips NE570
The NE570 is a versatile low cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expandor. Each channel has a full-wave rectifier to detect the average value of the signal, a linerarized temperature-compensated variable gain cell, and an operational amplifier. The NE570 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems.| Part No. | NE570 |
|---|---|
| Datasheet | NE570 Download |
| Manufacturer |  Philips |
| Description | Telephone trunk comandor |
| Buy | Stock & Price |
GENERAL DESCRIPTION
PIN CONFIGURATION RECT_CAP_1 RECT_IN_1 ∆G_CELL_IN_1 GND INV_IN_1 RES_R3_1 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 RECT_CAP_2 RECT_IN_2 ∆G_CELL_IN_2 VCC INV_IN_2 RES_R3_2 OUTPUT_2 THD_TRIM_2 NE570D 12 11 10 9FEATURES
OUTPUT_1 THD_TRIM_1● Complete compressor and expandor in one IC
● Temperature compensated
● Greater than 110 dB dynamic range
● Operates down to 6 VDC
● System levels adjustable with external components
● Distortion may be trimmed out
APPLICATIONS
SR02503 Figure 1. Pin configuration.● Cellular radio
● Telephone trunk comandor
● High level limiter
● Low level expandor—noise gate
● Dynamic noise reduction systems
● Voltage-controlled amplifier
● Dynamic filters ORDERING INFORMATION Type number Package Name NE570D SO16
DESCRIPTION
plastic small outline package; 16 leads; body width 7.5 mm Version SOT162-1 0 °C to +70 °C Temperature range BLOCK DIAGRAM THD TRIM R3 R3 20 kΩ VARIABLE GAIN R4 30 kΩ R1 10 kΩ RECT IN RECTIFIER VREF 1.8 V – OUTPUT + INVERTER IN ∆G CELL IN R2 20 kΩ RECT CAP SR02507 Figure 2.
