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Part Number SL1035

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KSI-W022-000
1
SL1035
PLL FM STEREO MULTIPLEX
Description
SL1035 contains 2 functions of skip noise control and pilot cancel.
Function
· Pilot canceler.
· High-cut controller(HCC)
· Stereo noise controller(SNC)
· VCO oscillation stop
· Automatic selection between stereo and mono

Features
· Low distortion
· Good ripple rejection of power supply
· Wide supply voltage range : V
CC
= 6.5V ~ 14V
· Input signal voltage : V
IN
= 200mV ~ 300mV
Application
· Car stereo radios

Ordering
Information
Type NO.
Marking
Package Code
SL1035
SL1035
ZIP16
Outline Dimensions unit :
mm
S
S
e
e
m
m
i
i
c
c
o
o
n
n
d
d
u
u
c
c
t
t
o
o
r
r
3.0
0.254
3.00
3.23
1.78
7.11
0.51
12.12
22.48
0.51
1.50
1.27
·
0.31d
5.49
1.52
1.02
45
o
24.38
15.24
2 ·
3.05 · 0.13d
1.52 · 0.13d
3.0
3.05
KSI-W022-000
2

Absolute Maximum Ratings
(Ta = 25
°C)
Characteristics Symbol
Rating
Unit
Supply Voltage
V
CC
16 V
Lamp Driving Current
I
LAMP
30 mA
Power Dissipation
P
D
520 mW
Operating Temperature
T
opr
- 25 ~ + 70
Storage Temperature
T
stg
- 40 ~ + 125
Block Diagram and Application Circuit
SL1035
+
+
Le f t
10K
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
P HA S E
DET ECT O R
V CO
V C O
S T O P
F F 1
19KHz
0°
F F 2
19KHz
90°
F F 3
38KHz
P I L O T
CA NCEL
VOLTAGE
REGU
L
AT
OR
S T ER EO
DECO DER
HCC
S NC
P I L O T
DET ECT O R
T R I G -
G ER
LA MP
DR I V ER
M A I N
HI G H.CUT
R i g h t
HCC
R -o u t p u t
S NC
V c c
V c c
t o p i n 2
L-o u t p u t
C o mp o s i t e
S i g n a l
I n p ut
12K
1000p F
1K
3.3u F
1u F
0.01u F
2.2K
0.47u F
10u F
1K
S ep a r a t i o n a d j us t
20K
3300pF
100u F
0.015u F
3.3K
3.3K
0.015u F
1u F
1K
S t er eo
La mp
3300pF
100K
0.022uF
KSI-W022-000
3
Test Circuit

Electrical Characteristics
(Unless otherwise specified, Ta=25, Vcc = 10V, V
IN
= 300mV, f=1KHz, L+R = 90%, Pilot=10%)
Characteristics
Symbol
Test Condition
Min. Typ. Max. Unit
Quiescent Current
I
CCQ
-
-
22
28
mA
Channel Separation
CH
SEP
- 45
50
-
dB
Monaural THD
THD
MO
V
IN
=300mV(mono) -
0.07
0.2
%
Stereo THD
THD
ST
- -
0.07
0.2
%
Lamp Turn-on Level
V
LAMP
L+R=90%, Pilot=10%
60
85
120
mV
Capture Range
C.R.
-
-
±3
-
%
Output voltage
V
OUT
- 150
215
300
mV
R
g
=20 K
68 74 - dB
Signal to Noise Ratio
S/N
R
g
=10 K
70 78 - dB
Input Resistance
R
IN
-
-
20
-
K
SCA Rejection Ratio
SCA
rej
- -
80
-
dB
SL1035
SL1035
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
+
10K
Co mp o s i t e
S i g n a l
I n p u t
12K
1000F
1K
1u F
2.2K
0.47u F
10u F
20K
3300p F
100u
F
3.3K
0.015u
F
A MP
3.3K
L.P .F
+
-
3.3K
A MP
3.3K
L.P .F
+
-
3.3K
3.3u F
1u F
100K
0.022u F
3300pF
V c c
A
A
S W 1
A
B C
D
A
V c c
S W 2
S W 3
B
3V
1V
0.6V
0.1V
R i g h t
Ch a n n e l
O u t p u t
Le f t
Ch a n n e l
O u t p u t
0.015u
F
3.3K
S W 1 : P l a c e i n t h e A
f o r o t h e r t h a n s e p a r a t i o n
S W 2 : P l a c e i n t h e A
f o r o t h e r t h a n HCC, S NC
S W 3 : F o r c e d mo n o s w i t c h
o d B
Ba n d w i d t h 100KHz ,T HD=0.01% o r l e s s
I n p u t i mp e d e n c e 330K o r mo r e
B
B
+
-
KSI-W022-000
4
Electrical Characteristics (continued)
Characteristics
Symbol
Test Condition
Min. Typ. Max. Unit
THD=1%,Rg=20 k
700 900 - mV
Allowable Input
Voltage
V
IN
THD=1%,Rg=10 k
- 450 - mV
SNC Output
Attenuation
ATT(SNC) V
8
=0.6V,L-R=90%,Pilot=10% -8.5 -3 -0.3 dB
SNC Output Voltage
V
OUT
(SNC) V
8
=0.1V,L-R=90%,Pilot=10% - - 5 mV
ATT(HCC1) V
7
=0.6V,L+R=10%,Pilot=10% -15 -9 -0.5 dB
HCC Output
Attenuation
ATT(HCC2) V
7
=1V,L+R=10%,Pilot=10% -2 - 0 dB
Power supply
Ripple Rejection
R.R. -
-
35
-
dB
VCO Stop Voltage
VCO
STOP
- -
7.3
-
V
Channel Balance
CH
BAL
- -
0.5
1.5
dB
Pilot Cancellation
P
CAN
- 20
27
-
dB
Stereo Lamp Current
I
LAMP
Min. stereo operating
Current
0.5 - - mA
Saturation
Voltage(Pin 10)
V
SAT
I
LAMP
=10mA -
1
-
V

Information In Using IC
1. Pilot cancelling circuit
A level-following type has been used. Once set, it can easily accomodate varying pilot
modulation depths among stations. Cancelling signal is a sawtooth wave obtained by
integrating R and C with a square wave that is proportionate in amplitude to pilot level.

2
P i l o t S i g n a l
19KHz
S q u a r e w a v e
19KHz 90°
Ca n c e l l i n g s i g n a l :
s a w t o o t h w a v e s i mu l a t e d
b y i n t e g r a t i n g c i r c u i t
13
t o p i n 2
SL1035
s a w t o o t h w a v e
SL1035
KSI-W022-000
5

2. Separation adjustment
SL1035 has separation only in a 25 to 30dB by itself. If a phase correction circuit is
provided as shown below, it can have intrinsic separation characteristics, typically 50dB.









3. Adjusting the free running frequency
When connecting a frequency counter, use a timing set resistor and a semiset resistor.
Connect the counter with a high impedance input to the connection between these
resistors with a 100 K .


4. Stereo noise control and High cut control
The SL1035 has SNC and HCC terminals for improved S/N ratios when operating in weak
radio fields. Noise unique to stereo FM in weak fields can be reduced by adjusting the
SNC terminal. The HCC terminals permits further improvement of effective S/N ratios by
lowering treble levels of FM noises in weak fields. (See Graph 2). Stereo deteriorates
approximately 21.7dB(compared to Mono) in weak radio fields(See Graph 2). Generally,
when S/N ratios deteriorate below 30 to 40dB, noises become quite noticeable.
1) Stereo noise control
Stereo S/N ratios deteriorate 21.7dB in weak radio fields but it can improved by
varying stereo separation. The relation between separation and S/N improvement is
2
Co mp o s i t e
S i g n a l
I n p u t
1500p F
20K
SL1035
P h a s e c o r r e c t i o n c i r c u i t
1K
16
V c c
A d j u s t w i t h i n 76.00 KHz ± 50 Hz
10K
1000pF
F r e q u e n c y
Co u n t e r
SL1035
12K
0.1u F
2M
18K
1u F
SL1035