Philips Semiconductors
Product specification
Low voltage compandor
SA575
BLOCK DIAGRAM and TEST CIRCUIT
0.1µF
V
CC
+5V
C15
1
2
C3
V
OUT
+
–
OP AMP
575
V
CC
20
19
18
17
R13
10k
10µF
GND
V
IN
+
OP AMP
+
C14
V
REF
+
10µF
3
4
3.8k
–
C11
+
5
C
RECT
2.2µF
3.8k
16
Σ
Σ
10k
V
REF
∆G
10k
∆G
GND
10k
+
4.7µF
C
RECT
6
7
8
15
14
13
12
11
+
+
C10
V
OUT
GND
C6
V
IN
V
REF
10µF
2.2µF
10µF
+
10k
R8
30k
R7
30k
C8
+
10µF
9
10
+
1µF
GND
GND
GND
SR00704
Figure 2. Block Diagram and Test Circuit
-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
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
For compandor, including summing amplifier
V
CC
I
CC
V
REF
R
L
THD
E
NO
0dB
V
OS
Supply voltage
1
Supply current
Reference voltage
2
Summing amp output load
Total harmonic distortion
Output voltage noise
Unity gain level
Output voltage offset
Output DC shift
1kHz, 0dB BW = 3.5kHz
BW = 20kHz, R
S
= 0Ω
1kHz
No signal
No signal to 0dB
Gain cell input = 0dB, 1kHz
Rectifier input = 6dB, 1kHz
Tracking error relative to 0dB
Gain cell input = 0dB, 1kHz
Rectifier input = -30dB, 1kHz
-1.5
-150
-100
-1.0
-1.0
No signal
V
CC
= 5V
3
3
2.4
10
0.12
6
1.5
30
1.5
150
100
1.0
1.0
5
4.2
2.5
7
5.5
2.6
V
mA
V
kΩ
%
µV
dB
mV
mV
dB
dB
SA575
TYP
MAX
UNITS
DC ELECTRICAL CHARACTERISTICS
Typical values are at T
A
= 25
°
C. Minimum and Maximum values are for the full operating temperature range:
1997 Nov 07
3
PHILIPS [ NXP SEMICONDUCTORS ]
