KSI-W006-000
1
SL5020/P
LOW VOLTAGE COMPANDER
Description
The SL5020 contains two variable gain circuits configured for compressing and expanding
the dynamic range of an audio signal. One circuit is configured as an expander, while the
other circuit can be configured as a compressor or expander. Each circuit has a full wave
rectifier to provide average value information to a variable gain cell located in either the
input stage or the feedback path.
An internal temperature stable bandgap reference provides the necessary precision
voltages and currents required. It contains also compressor and expander mute circuit.
Features
·
Low voltage operation Vopr = 1.8 ~ 5.0V
· Decreasing external components
· Built in compressor and expander mute circuit
· Unity gain level set a 100mVrms
· Response time adjustable
Ordering
Information
Type NO.
Marking
Package Code
SL5020
SL5020
SOP14
SL5020P SL5020
DIP14
Outline Dimensions unit :
mm
S
S
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m
m
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c
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d
d
u
u
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r
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SOP14 DIP14
KSI-W006-000
3
PIN Voltage and Description
Pin
No Name
Voltage
(V)
Description
1 V
REF
1.3
Bandgap
Voltage
2
EXP.MUTE
1.4 Expander mute adjust.
3
EXP.FILTER
0 ~ 0.6
Expander Filter. connect to an external capacitor to filter the full
wave rectifier's output. This capacitor affects attack & delay times, as
well as low frequency accuracy.
4 EXP.OUTPUT 1.5
Output
of the expander amplifier
5 EXP.INPUT 1.5
Expander input. Nominally signal range is 3.16mVrms to
316mVrms. Must be capacitor coupled to the signal source
6 VB 2.2
An internal reference voltage. This is an AC ground, and must be
well filtered to obtain high power supply rejection and low crosstalk.
7 GND GND
Ground
8
COM.FEEDBACK
1.5 Input to the compressor Variable gain stage and rectifier.
9 COM.CF 1.5
Normally, this is connected to the compressor's output through
filtered DC feedback path.
10 COM.INPUT 1.5
Compressor input, Normally. Signal range is 100uVrms to 1.0Vrms.
Must be capacitor coupled to the signal source
11
COM.OUTPUT
1.5 Output of the compressor amplifier.
12 COM.FILTER 0~0.6
Compressor filter. Connect to an external capacitor to filter the full
wave rectifier's output. This Capacitor affects attack & decay times,
and low frequency accuracy
13
COM.MUTE
1.4 Compressor mute adjust.
14 Vcc 3
Power supply pin. Connect to power supply providing between 1.8
and 5.0 V
Electrical Characteristics
(Unless Otherwise Specified, Ta=25 °C , Vcc=3V, f=1kHz)
Characteristics Symbol Test
Conditions Min.
Typ.
Max.
Unit
Supply current
Icc
No Signal
- 3.1 - mA
Compressor Section
0 dB Gain
G
C0
Vinc= 100mVrms, 0dB
-1.5 0 1.5 dB
Gain Error
(Note 1)
G
C1
G
C2
G
C3
G
C4
Vinc= 316mVrms, 10dB
Vinc= 10mVrms, -20dB
Vinc= 1mVrms, -40dB
Vinc= 100uVrms, -60dB
-1
-1
-1
-1
0
0
0
0
1
1
1
1
dB
dB
dB
dB
Distortion THDc
Vinc=100mVrms, f=1kHz
0.3
1.5 %
Noise Output
Vnoc
Rg = 600
- 0.8 5.0
mVrms
Ripple Rejection Ratio
RRc
Vcc = 1kHz,
3V(DC), 100mVrms
- -25
-18 dB
SL5020/P
KSI-W006-000
4
Electrical Characteristics(continued)
(Unless Otherwise Specified, Ta=25 °C , Vcc=3V, f=1kHz)
Characteristics Symbol
Test
Conditions
Min.
Typ.
Max.
Unit
Crosstalk(CE)
CTc
Vinc=100mVrms. Exp Output
-
-72
-50
dB
Muting Attenuation
Attc
Vinc=100mVrms. Vpin13=GND
-
-65
-50
dB
Input Impedance
Rinc
PIN 10
-
20
-
k
Expander Section
0 dB Gain
Ge0
Vine=100mVrms 0dB
-1.5
0
1.5
dB
Gain Error
(Note 1)
Ge
1
Ge
2
Ge
3
Ge
4
Vine=178mVrms 5dB
Vine=31.6mVrms -10dB
Vine=10mVrms -20dB
Vine=3.16mVrms -30dB
-1
-1
-1
-1
0
0
0
0
1
1
1
1
dB
dB
dB
dB
Distortion THDe
Vine=100mVrms f=1kHz
-
0.4
1.5
%
Noise Output
Vnoe
Rg = 600
- 0.06 5.0
mVrms
Ripple Rejection Ratio
RRe
Vcc=1kHz, 3V(DC), 100mVrms
-
-58
-38
dB
Crosstalk(EC)
CTe
Vine=100mVrms, Com Output
-
-34
-24
dB
Muting Attenuation
Atte Vine=316mVrms,
Vpin2=GND - -70 -50 dB
Input Impedance
Rine
PIN4
-
4.3
-
k
(Note 1) Gain Error=(V
OUT
- 20dB) -V
IN
x K
K : Compressor = 0.5
Expander = 2
SL5020/P
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