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NE570 fiches techniques PDF

ON Semiconductor - Compandor

Numéro de référence NE570
Description Compandor
Fabricant ON Semiconductor 
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NE570 fiche technique
NE570
Compandor
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.
Features
Complete Compressor and Expandor in One IC
Temperature Compensated
Greater than 110 dB Dynamic Range
Operates Down to 6.0 VDC
System Levels Adjustable with External Components
Distortion may be Trimmed Out
Pb−Free Packages are Available*
Applications
Cellular Radio
Telephone Trunk Comandor
High Level Limiter
Low Level Expandor − Noise Gate
Dynamic Noise Reduction Systems
Voltage−Controlled Amplifier
Dynamic Filters
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MAXIMUM RATINGS
Rating
Symbol Value
Unit
Maximum Operating Voltage
VCC 24 VDC
Operating Ambient Temperature Range
TA 0 to +70 °C
Operating Junction Temperature
TJ 150 °C
Power Dissipation
PD 400 mW
Thermal Resistance, Junction−to−Ambient RqJA
105 °C/W
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
DG CELL IN
RECT IN
THD TRIM
R2 20 kW VARIABLE
GAIN
R1 10 kW
RECTIFIER
R3
R3
20 kW
INVERTER IN
R4
30 kW
VREF
1.8 V
+
http://onsemi.com
MARKING
DIAGRAM
16
1
SOIC−16 WB
D SUFFIX
CASE 751G
NE570D
AWLYYWWG
1
Plastic Small Outline Package;
16 Leads; Body Width 7.5 mm
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
RECT_CAP_1 1
RECT_IN_1 2
DG_CELL_IN_1 3
GND 4
INV_IN_1 5
RES_R3_1 6
OUTPUT_1 7
THD_TRIM_1 8
16 RECT_CAP_2
15 RECT_IN_2
14 DG_CELL_IN_2
13 VCC
12 INV_IN_2
11 RES_R3_2
10 OUTPUT_2
9 THD_TRIM_2
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
OUTPUT
RECT CAP
Figure 1. Block Diagram
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
May, 2006 − Rev. 4
1
Publication Order Number:
NE570/D

PagesPages 10
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