Samsung S1A0688C01-A0B0 Datasheet
TV SOUND MPX FOR TWO CARRIER SYSTEM S1A0688C01
INTRODUCTION
32−SDIP−400
The S1A0688C01 is a monolithic integrated circuit designed for
demodulating two carrier TV-MPX broadcast.
FEATURES
• 1st & 2nd Sound IF
• Double-PLL FM Detection
• AGC for CCA part
• Matrix for Multi-Sound Broadcasts
• Pilot Detector
• External Control Interface
• ID Indicators (Stereo, Bilingual)
• Available for Korea standard
• Non-clipping Output up to 400% modulation with AGC
• Available in DC control, Normal microcontroler control or IIC bus control systems
• ID output: Direct LED drive or IIC serial data output
• Non-adjust
ORDERING INFORMATION
Device Package Operating Temperature
S1A0688C01-A0B0 32−SDIP−400 −10 to + 70 °C
1
S1A0688C01 TV SOUND MPX FOR TWO CARRIER SYSTEM
BLOCK DIAGRAM
1 19 7 6 8 9 10 12 11 13 14
31
30
17
23
24
GND VSS
2
IF
3
4
IF
5
S1
4.72MHz
1st PLL
4.72MHz
2nd PLL
4.5MHz
2nd PLL
4.5MHz
1st PLL
4.3MHz
VCO
A
A
1/39
S1
1/2
CCA
CCA
1/100
1/370
1/200
AGC
AMP
MATRIX
18
15
29
30KHz
HPF
OFFSET CANCELLER
DN
CUT COMP
DIGITAL FREQUENCY
DETECTOR
CONTROL TYPE
AUTO DETECT
U-COM INTERFACE
(DC/3-LINE U-COM/IIC-BUS)
X20
MN
DET
100KHz
LPF
ZAPPING
BLOCK
55.1KHz
SC BPF AM DET
150Hz
SC BPF
X3
CCA
PLL
276Hz
SC BPF
390Hz
SC BPF
VOLTAGE
REFERENCE
X8
VCC VDD
26
27
28 22 21 20 32 16 25
2
TV SOUND MPX FOR TWO CARRIER SYSTEM S1A0688C01
PIN CONFIGURATION
RC TMS RCM ECI SCC FDI ADO VDD BIB STB EN SCL VSSSDA RO OFC
26 2528 2730 2932 31
S1A0688C01
GND
IF2 BP2 BP1 IF1 LPC2 LPC1 AC1 AC2 S1O S1I S2O AGCS2I LO VCC
24 23 22 21 20 19 18 17
161514131 2 3 4 5 6 7 8 9 10 11 12
PIN DESCRIPTION
Pin No. Description Pin No. Description
1 Analog GND 17 ID Filter Offset Canceling Cap.
2 SIF 2 Input 18 R Output
3 SIF 2 Bypass 19 Digital VSS
4 SIF 1 Bypass 20 Data Input / Output (SDA)
5 SIF 1 Input 21 Clock Input (SCL)
6 SIF 2 LPF Capacitor 22 Enable Input (EN)
7 SIF 1 LPF Capacitor 23 ID Indicator (Stereo)
8 SIF 1 Amplifier Capacitor 24 ID Indicator (Bilingual)
9 SIF 2 Amplifier Capacitor 25 Digital VDD
10 SIF 1 DET Output 26 AM DET Output
11 SIF 1 CCA Input 27 Frequency DET Input
12 SIF 2 DET Output 28 Slave Custom Code
13 SIF 2 CCA Input 29 External Clock In
14 AGC Detect Capacitor 30 Reference Clock Monitor
15 L output 31 Test Mode Switch
16 Analog VCC 32 Voltage Reference Capacitor
3
S1A0688C01 TV SOUND MPX FOR TWO CARRIER SYSTEM
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Condition Min. Typ. Max. Unit
Maximum Supply voltage VCC
Power Dissipation P
Operating temperature T
Storage temperature T
D
OPR
STG
max
Ta = 25 °C
VI = 0
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Condition Min. Typ. Max. Unit
Operating Voltage V
OPR
− − 6 V
− − 1000 mW
− 10 − 70 °C
− 40 − 125 °C
− 4.7 5 5.5 V
4
TV SOUND MPX FOR TWO CARRIER SYSTEM S1A0688C01
ELECTRICAL CHARACTERISTICS
DC Electrical Characteristics
(Ta = 25°C, VCC = VDD = 5V, fm = 1kHz, VI = 80dBµ, ∆f = ± 25kHz, unless otherwise specified)
Parameter Symbol Condition Min. Typ. Max. Unit
ICC Vi = 0 35 60 85 mA
IDD Vi = 0 − − 2.0 mA
SIF Input Limiting Voltage Vlim − − − 50 dBµ
AM Rejection Ratio AMRR AM 30% Mod 40 55 − dB
Input Impedance Zin − − 1 − Kohm
PILOT*Pilot Input Sensitivity Vps − − − 50 dBµ
ID ON time Ton MONO → ST, BI − 1.0 1.5 SEC
ID OFF time Toff ST, BI → MONO − − 0.3 SEC
Output level Vo − 320 420 520 mVrms
Matrix Matrix THD THDm1 − − 0.2 1.0 %
THDm2 ∆ f = ± 100kHz − 0.5 5.0 %
Noise Output (RF off) Voff Carrier OFF − − 400 mVrms
Output Impedance Zout − − − 50 ohm
Separation Ratio SEPtyp non-adjust 25 − − dB
SEPadj IIC Bus adjust 40 45 − dB
Cross Talk CT ∆ f = ± 25kHz 50 55 − dB
Matrix S/N Ratio S/N ∆ f = ± 25kHz 55 60 − dB
S/N(st) ∆ f = ± 25kHz (ST) 50 55 − dB
MUTE Attenuation
Ratio
* : Pilot signal FM deviation is ± 2.5kHz after 50% AM modulation.
Amute ∆ f = ± 25kHz − −66 −55 dB
5
S1A0688C01 TV SOUND MPX FOR TWO CARRIER SYSTEM
PIN DESCRIPTION
Pin No. Symbol Pin Name Description Internal Equivalence Circuit
1 GND Analog ground − −
2, 5 SIF2, SIF1 SIF input pin SIF signal input through
a SIF filter
IF1
(IF2)
3, 4 BP2, BP1 IF bypass pin IF Bypass pin is
grounded with a
capacitor
6, 7 LPC2, LPC1 PLL LPF pin The external capacitor
extracts DC level from
the 1st PLL output of
FM DET.
BP1
(BP2)
8, 9 AC1, AC2 DET AMP NF
pin
LPC1
(LPC2)
Negative feedback pin
of FM DET amplifier
Grounded with a
capacitor
AC1
(AC2)
6
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