參數(shù)資料
型號(hào)： SA575
廠商： NXP Semiconductors N.V.
英文描述： Low voltage compandor
中文描述： 低壓compandor
文件頁(yè)數(shù)： 3/14頁(yè)
文件大小： 102K
代理商： SA575
Philips Semiconductors
Product specification
SA575
Low voltage compandor
1997 Nov 07
3
BLOCK DIAGRAM and TEST CIRCUIT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Σ
G
G
V
REF
Σ
+
–
+
–
OP AMP
OP AMP
V
CC
575
4.7
μ
F
10
μ
F
0.1
μ
F
V
CC
+5V
10
μ
F
2.2
μ
F
10
μ
F
C
RECT
+
1
μ
F
V
IN
V
REF
V
OUT
C
RECT
2.2
μ
F
10
μ
F
V
IN
+
+
+
+
+
+
+
+
V
OUT
C3
GND
C6
GND
GND
GND
3.8k
3.8k
10k
10k
10k
10k
GND
R8
R7
30k
C8
GND
C11
C10
R13
10k
C14
C15
V
REF
10
μ
F
SR00704
Figure 2. Block Diagram and Test Circuit
DC ELECTRICAL CHARACTERISTICS
Typical values are at T
A
= 25
°
C. Minimum and Maximum values are for the full operating temperature range: -40 to +85
°
C for SA575, except
SSOP package is tested at +25
°
C only. V
CC
= 5V, unless otherwise stated. Both channels are tested in the Expandor mode (see Test Circuit)
LIMITS
SA575
TYP
SYMBOL
PARAMETER
TEST CONDITIONS
UNITS
MIN
MAX
For compandor, including summing amplifier
V
CC
Supply voltage
1
I
CC
Supply current
V
REF
Reference voltage
2
R
L
Summing amp output load
THD
Total harmonic distortion
E
NO
Output voltage noise
0dB
Unity gain level
V
OS
Output voltage offset
Output DC shift
3
3
5
7
V
No signal
V
CC
= 5V
4.2
2.5
5.5
2.6
mA
V
k
%
μ
V
dB
mV
mV
2.4
10
1kHz, 0dB BW = 3.5kHz
BW = 20kHz, R
S
= 0
1kHz
No signal
No signal to 0dB
Gain cell input = 0dB, 1kHz
Rectifier input = 6dB, 1kHz
Gain cell input = 0dB, 1kHz
Rectifier input = -30dB, 1kHz
0.12
6
1.5
30
1.5
150
100
-1.5
-150
-100
-1.0
1.0
dB
Tracking error relative to 0dB
-1.0
1.0
dB
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