STV8224 VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES
.. .. .. .
PRELIMINARY DATA
VIDEO PLL DEMODULATION SOUND PLL DEMODULATION POSITIVE AND NEGATIVE MODULATION AGC FOR BG AND L STANDARDS AUDIO SWITCH DC VOLUME CONTROL VIDEO SWITCH
SHRINK24 (Plastic Package)
DESCRIPTION The STV8224 is a picture and sound IF processor for multistandard application with very few external components and adjustements. It provides the audio and video switches for one SCART plug application. AM sound demodulation is performed with the STV8225 add-on.
ORDER CODE : STV8224
PIN CONNECTIONS
1
24
TUNER AGC STARTING POINT ADJUSTMENT
AFC OUTPUT
2
23
TUNER AGC OUTPUT
CVBS OUTPUT
3
22
AGC CAPACITOR
SWITCHING INPUT (STANDARD + INT/EXT)
4
21
AGC CAPACITOR (L STANDARD)
IF LC
5
20
IF INPUT
IF LC
6
19
IF INPUT
AUDIO HIGH PASS FILTER
7
18
GROUND
2nd IF SOUND INPUT
8
17
V CC
2nd IF DECOUPLING + MUTE
9
16
EXTERNAL AUDIO INPUT
INTERNAL VIDEO INPUT
10
15
FM DEMODULATED AUDIO OUTPUT
VIDEO SWITCH OUTPUT
11
14
AUDIO SWITCH OUTPUT
EXTERNAL VIDEO INPUT
12
13
VOLUME CONTROL + MUTE
May 1995 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
8224-01.EPS
PIF PLL FILTER
1/11
STV8224 BLOCK DIAGRAM EXT CVBS
AFC OUTPUT
2
VCC 5
6
1
12
17
18
19
10 VID AMP
IF INPUT 20 21
WHITE NOISE & SPOT INVERT
3
LOGIC INTERFACE
4
SFE 5.5
SFE 6.5
CVBS OUT
Int/Ext AGC
22 TUNER AGC OUTPUT
SWITCHED CVBS
11
6dB
PIF PLL & AFC
BG/L
23 TUNER AGC
SIF PLL
DC VOLUME
LIMITER & MUTE
8 9
24 14
13
16
15
7
STV8224
EXT AUDIO
8224-02.EPS
SWITCHED AUDIO AUDIO OUT
ABSOLUTE MAXIMUM RATINGS Parameter
Value
Unit
VS
Supply Voltage
13.5
V
Vx
Tuner AGC Voltage
VCC
V
Tstg
Storage Temperature
Toper
Operating Temperature
-40, +150
o
C
0, +70
o
C
8224-01.TBL
Symbol
Symbol Rth (j-a)
2/11
Parameter Junction-ambient Thermal Resistance
Value Max.
75
Unit o
C/W
8224-02.TBL
THERMAL DATA
STV8224 ELECTRICAL CHARACTERISTICS (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 100% at L, fPC = 38.9MHz, fSC = 33.4MHz, Video BW = 5MHz, Sound carrier input : 5.5MHz, 10mVRMS, fM = 1kHz, Audio BW = 20kHz, ∆f = ±50kHz, Volume attenuation = 0dB, unless otherwise specified) Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
9
12.6
V
70
95
mA
SUPPLY VCC
Voltage Operating
ICC
Supply Current
8 I17, VCC = 9V
IF AMPLIFIER 70
µVRMS
1.5
kΩ
Differential Input Capacitance
2
pF
Gain Control Range
64
dB
110
mVRMS
0.2
µA/kHz
V19-20
Input Sensitivity (RMS)
R19-20
Differential Input Resistance
C19-20 Gr
Max Input Signal
-3dB Video at Output
+1dB Video at Output
AFC AFC Slope DEMODULATED VIDEO OUTPUT (Pin 3) VA3
Amplitude
BG vs L
Top Sync to White
2
2.3
Amplitude Difference
%
2.2
V
B/G and L
Zero Carrier Level
B/G L
BW
Bandwidth
-3dB Video Signal
Dg
Differential Gain
3
7
%
Dp
Differential Phase
3
7
Degree
Vr3
Residual Carrier Signal (RMS Value)
1
10
mV
Vr3
Residual 2nd Harmonic (RMS Value)
1
10
mV
Internal Bias of Emitter Follower
I3 S/N
3
1.9
VPP
10
Top Sync Level
VS3
1.6
2.6
4.3 1.9
V V
9
MHz
5
mA
Signal to Noise Ratio
Note 1
55
dB
Intermodulation 1.07MHz
Note 2
50
dB
VWTH
White Noise Threshold Voltage
4.6
V
VWIL
White Noise Insertion Level
3.3
V
VBTH
Black Noise Threshold Voltage
1.3
V
VBIL
Black Noise Insertion Level
2.5
V
I22C
Charging Current
550
I22D
Discharge Current
12
C/D
Charging/Discharging Ratio
950
1300
µA
20
28
µA
45
Vout black white at BW = 5MHz VN (mVRMS) 2. Video carrier relative level = 0dB, Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB
Notes : 1.
S
N
= 20 log 10
3/11
8224-03.TBL
AGC CIRCUIT (BG MODE)
STV8224 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 100% at L, fPC = 38.9MHz, fSC = 33.4MHz, Video BW = 5MHz, Sound carrier input : 5.5MHz, 10mVRMS, fM = 1kHz, Audio BW = 20kHz, ∆f = ±50kHz, Volume attenuation = 0dB, unless otherwise specified) Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
AGC CIRCUIT (L MODE) I22C
Charging Current
I22D
Discharge Current (Frame Sampled)
Note 3
3.3
mA
40
µA
Additional Charging Current (Frame Sampled)
L in case of missing, VITS Pulses and no White in Video Content
180
µA
Threshold Voltage Level
L in case of missing, VITS Pulses and no White in Video Content
VBlack +0.1
V
TUNER AGC I23
Sinked Current
S23
Current Slope
1.4
2.1
2.8
mA
R = 3kΩ on Pin 24
300
µA/dB
-3dB FM detected signal
60
µV
FM SOUND DEMODULATION V8S R8
Input Sensitivity Limiter Input Resistance
kΩ dB
SVR
Supply Voltage Rejection Ratio
TBF
dB
V15
Detected Audio Output Signal
1
VRMS
THD
Total Harmonic Distortion
R 15
Internal Deemphasis Resistor Signal to Noise Ratio
40
53
Amplitude Modulation Rejection
S/N
Note 4
1.2
AMR
600 Note 5, Weighted CCIR 468-4
0.2
1
750
900
% Ω
55
dB
80
dB
VOLUME CONTROL VC Range
Control Range
R 16 CRtk EXTHD
Input Resistance
40
65
kΩ
Crosstalk
70
80
dB
THD on External Signal
VIN = 2VRMS, Attenuation = 0dB
Notes : 3. Triggered on white level V15 (mVRMS) (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% 4. AMR = 20 log VAM V15 ( mVRMS) S = 20 log (dB) 5. N VN (mVRMS)
4/11
0.05
0.3
%
8224-04.TBL
AUDIO SWITCH
STV8224 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 100% at L, fPC = 38.9MHz, fSC = 33.4MHz, Video BW = 5MHz, Sound carrier input : 5.5MHz, 10mVRMS, fM = 1kHz, Audio BW = 20kHz, ∆f = ±50kHz, Volume attenuation = 0dB, unless otherwise specified) Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
1.6
1.9
2.2
V
2
V
VIDEO SWITCH VDC 12
DC Input Level
No signal
VS12
Top Sync. Clamp Level
V11
DC Output Level
VS11
Top Sync. Clamp Level
1.5
V
Crosstalk
55
dB
GEX
1.8 No signal
Gain from Ext. Input to Output
5.5
Output Swing I12 VBW GIN
1.4
1.7
V
6
6.5
dB
1
5
µA
4
Input Current
V12 = VDC12 = 1.5V
Bandwidth
VIN = 1VPP
Gain from Int. Input to Output
V 15
-0.5
0
MHz +0.5
dB
MUTE (Pin 9 or Pin 13) V9
Threshold Voltage
V9
DC Level when Mute Disabled
V13
Threshold
High impedance controling circuit
2.1
V
2.8
V
0.3
V
Negative Modulation
Video : External - Audio : External Video : Internal - Audio : Internal
7.2 1.8
V V
Positive Modulation
Video : External - Audio : External Video : Internal - Audio : External
4.9 2.6
6.4 4.1
V V
Threshold 3
Level linked to VCC
6.4
6.8
7.2
V
Threshold 2
Level linked to VCC
Threshold 1
Level linked to VCC
4.1
4.5
4.9
V
1.8
2.2
2.6
V
5/11
8224-05.TBL
CONTROL INPUT
STV8224 INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter
Figure 2 : AFC Output
2
Figure 3 : CVBS Output
8224-04.EPS
8224-03.EPS
1
Figure 4 : Switching Input Standard + INT/EXT
3
8224-05.EPS
8224-06.EPS
4
Figure 5 : IFLC
Figure 6 : Audio High Pass Filter
2kΩ
5
2kΩ
6
6/11
8224-08.EPS
8224-07.EPS
7
STV8224 INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 8 : Internal Video Input
560 Ω
2CD IF Sound Input (Pin 8) 2CD IF Decoupling + Mute (Pin 9)
10
9
8224-09.EPS
8
8224-10.EPS
560 Ω
Figure 7 :
Figure 9 : Video Switch Output
Figure 10 : External Video Input
11
Figure 11 : Volume Control + Mute
8224-12.EPS
8224-11.EPS
12
Figure 12 : Audio Switch Output
13
8224-13.EPS
8224-14.EPS
14
Figure 13 : FM Demodulated Audio Output
Figure 14 : External Audio Input
16
1kΩ
8224-16.EPS
8224-15.EPS
15
7/11
STV8224 INPUT/OUTPUT PIN CONFIGURATION (continued)
17
800 Ω
Figure 16 : IF Input
800 Ω
Figure 15 : VCC
15V 20
Figure 17 : AGC Capacitor
8224-18.EPS
8224-17.EPS
19
Figure 18 : AGC Capacitor
21
Figure 19 : Tuner AGC Output
8224-20.EPS
8224-19.EPS
22
Figure 20 : Tuner AGC Starting Point Adjustment
23
8/11
8224-22.EPS
8224-21.EPS
24
8224-23.EPS
AFC Output
12V
Tuner AGC Output
R15 6.8kΩ
9V
R16 100kΩ
R17 100kΩ
390Ω
R34
15Ω
R35
C16 47µF
C17 1µ F
9V
C33 10µF
DZ1 BZX55C 9V6
Q4 BC337
R14 27kΩ
Tuner AGC Delay
IF1
R13 68Ω
C15 680nF
P1 10kΩ
1
24
VIDEO SAW FILTER BGDKL
C32 10nF
C14 4.7nF
2
23
3
22
L5 3.3µ H
C18 1µF
150Ω
LC1
IC2 6
19
68pF
C28
18
100nF
C20
47µ F
C21
17
BFP 6.5MHz CF2
D2
C25 1µ F
1N4148
D1
1N4148
7
8
STV8224
BFP 5.5MHz CF1
38.9MHz
5
20
C29 10nF
R22
Switching Voltage
4
21
C19 47nF
L4 3.3µ H
R25 2.7kΩ
1.8kΩ
10
15
C26 100nF
R24 4.7kΩ
R27
R20 1kΩ
1.8kΩ
R21
C24 1nF
9
16
SW4 STD
R28 4.7kΩ
12
13
8.2µ H
L6
SW1
C27 470nF
Mute
CF3
TRAP FILTER (5.5MHz - 6.5MHz)
R26 3.9kΩ
Q3 BC547
+9V
11
14
C7 68nF
R12 2.2kΩ
470nF
Q2
75Ω
R18
R10 22Ω
Switched Sound Output
Demodulated Sound Output
External Sound Input
R19 1kΩ
R29 75Ω
CVBS Output (to SCART)
CVBS Ouput
External CVBS Input
Volume Control
R32 10kΩ
C31 100nF
C30
+9V
R9 560Ω
BC547
C8 10µ F
4.7µ F
C6
220Ω
R11
C9 10µ F
STV8224
APPLICATION DIAGRAM STV8224
9/11
10/11
8224-24.EPS
AFC Output
12V
Tuner AGC Output
R15 6.8kΩ
9V
R16 100kΩ
R17 100kΩ
390Ω
R34
15Ω
R35
C16 47µF
C17 1µF
9V
C33 10µF
DZ1 BZX55C 9V6
Q4 BC337
R14 27kΩ
Switching Voltage
R13 68Ω
C15 680nF
P1 10kΩ
1
24
VIDEO SAW FILTER BGDKL
IF1
Tuner AGC Delay
SOUND SAW FILTER L STD
IF2
C32 10nF
C14 4.7nF
2
23
3
22
L5 3.3µH
C18 1µF
4
21
R22 150Ω
LC1
IC2 6
19
68pF
C28
100nF
C20
47µF
C21
BFP 6.5MHz CF2
BFP 5.5MHz CF1 D2
C25 1µF
1N4148
D1
1N4148
7
12
8
17
3
10
9
8
R27
10
15
5
C26 100nF
R25 2.7kΩ
R24 4.7kΩ
1.8kΩ
R20 1kΩ
1.8kΩ
R21
C24 1nF
9
16
Level Switch
4
6
C22 10µF
SW4 STD
R28 4.7kΩ
12
13
7
8.2µH
Mute
CF3
TRAP FILTER (5.5MHz - 6.5MHz) L6
R26 3.9kΩ
Q3 BC547
+9V
11
14
C7 68nF
C23 10µF
STV8225
SW1
C27 470nF
R12 2.2kΩ
BC547
R9 560Ω
Q2
75Ω
R18
R10 22Ω
+9V
470nF
C30
Switched Sound Output
Sound Output
External Sound Input
R19 1kΩ
R29 75Ω
CVBS Output (to SCART)
CVBS Ouput
External CVBS Input
Volume Control
R32 10kΩ
C31 100nF
4.7µF
C6
10µF
220Ω
11
C8
R11
C12 100nF
10µF
C9
47µF
C11
IC1
C10 22µF
STV8224
18
2
1
38.9MHz
5
20
C29 10nF
C19 47nF
3.3µH
L4
13
14
C13 10µF
3.3µH
L7
STV8224
APPLICATION DIAGRAM STV8224 - STV8225
STV8224
PMSDIP24.WMF
PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP
A a1 b b1 b2 b3 D E e e3 e4 F i L
Min.
Millimeters Typ. 3.3
0.51 0.35 0.2 0.75 0.75
Max.
Min.
0.59 0.36 1.42
0.020 0.014 0.008 0.030 0.030
23.11 9.73
7.95
Inches Typ. 0.130
0.023 0.014 0.056 0.910 0.383
0.313
1.778 19.558 7.62
0.070 0.770 0.300 6.86 5.08
2.54
Max.
0270 0.200
SDIP24.TBL
Dimensions
0.100
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
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