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參數(shù)資料
| 型號： | SA572 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Programmable Analog Compandor(可編程模擬壓縮擴(kuò)展器) |
| 中文描述： | 可編程模擬Compandor（可編程模擬壓縮擴(kuò)展器） |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 136K |
| 代理商： | SA572 |
Philips Semiconductors
Product specification
SA572
Programmable analog compandor
2
1998 Nov 03
853-0813 20294
DESCRIPTION
The SA572 is a dual-channel, high-performance gain control circuit
in which either channel may be used for dynamic range
compression or expansion. Each channel has a full-wave rectifier to
detect the average value of input signal, a linearized,
temperature-compensated variable gain cell (
G) and a dynamic
time constant buffer. The buffer permits independent control of
dynamic attack and recovery time with minimum external
components and improved low frequency gain control ripple
distortion over previous compandors.
The SA572 is intended for noise reduction in high-performance
audio systems. It can also be used in a wide range of
communication systems and video recording applications.
FEATURES
Independent control of attack and recovery time
Improved low frequency gain control ripple
Complementary gain compression and expansion with
external op amp
Wide dynamic range—greater than 110dB
Temperature-compensated gain control
Low distortion gain cell
Low noise—6
μ
V typical
Wide supply voltage range—6V-22V
System level adjustable with external components
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
D
1
, N, Packages
TRACK TRIM A
RECOV. CAP A
RECT. IN A
ATTACK CAP A
G OUT A
THD TRIM A
G IN A
GND
TRACK TRIM B
RECOV. CAP B
RECT. IN B
ATTACK CAP B
G OUT B
THD TRIM B
G IN B
V
CC
NOTE:
1. D package released in large SO (SOL) package only.
SR00694
Figure 1. Pin Configuration
APPLICATIONS
Dynamic noise reduction system
Voltage control amplifier
Stereo expandor
Automatic level control
High-level limiter
Low-level noise gate
State variable filter
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
16-Pin Plastic Small Outline (SOL)
–40 to +85
°
C
SA572D
SOT162-1
16-Pin Plastic Dual In-Line Package (DIP)
–40 to +85
°
C
SA572N
SOT38-4
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
V
CC
Supply voltage
22
V
DC
T
A
Operating temperature range
SA572
–40 to +85
°
C
P
D
Power dissipation
500
mW
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