NE570_06 Datasheet, PDF (1/10 Pages) ON Semiconductor – Compandor

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 V_DC
• 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
MAXIMUM RATINGS
Rating
Symbol Value
Unit
Maximum Operating Voltage
V_CC
24
V_DC
Operating Ambient Temperature Range
T_A
0 to +70
°C
Operating Junction Temperature
T_J
150
°C
Power Dissipation
P_D
400
mW
Thermal Resistance, Junction−to−Ambient R_qJA
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
V_REF
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 V_CC
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
1
May, 2006 − Rev. 4
Publication Order Number:
NE570/D