Text preview for : STV8223B.pdf part of SGS STV8223B MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES



Back to : STV8223B.pdf | Home

STV8223B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES

. . . . . . .

VIDEO PLL DEMODULATION SOUND PLL DEMODULATION NEGATIVE MODULATION AGC FOR NEGATIVE MODULATION AUDIO SWITCH DC VOLUME CONTROL VIDEO SWITCH

SHRINK24 (Plastic Package)

DESCRIPTION The STV8223B is a pictureand sound IF processor for multistandard application with very few external components and adjustments. It provides the audio and video switches for one SCART plug application. PIN CONNECTIONS
PIF PLL FILTER AFC OUTPUT CVBS OUTPUT SWITCHING INPUT (INT/EXT) IF LC IF LC AUDIO HIGH PASS FILTER 2nd IF SOUND INPUT AUDIO AND 2nd IF DECOUPLING INTERNAL VIDEO INPUT VIDEO SWITCH OUTPUT EXTERNAL VIDEO INPUT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13

ORDER CODE : STV8223B

TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT AGC CAPACITOR NOT TO BE CONNECTED IF INPUT IF INPUT GROUND VCC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT VOLUME CONTROL + MUTE
8223B-01.EPS

January 1997

1/10

STV8223B
BLOCK DIAGRAM
EXT CVBS AFC OUTPUT

V CC 5 6 1 12
6dB

2

17

18 11 10 SWITCHED CVBS

PIF PLL & AFC

19 IF INPUT 20

VID AMP

WHITE NOISE & SPOT INVERT

3

SFE 5.5

SFE 6.5

CVBS OUT

22 TUNER AGC OUTPUT

AGC

Int/Ext

LOGIC INTERFACE

4

23 TUNER AGC 24 AUDIO Vref MUTE 14 13 16 15 7 9 DC VOLUME SIF PLL LIMITER 8

STV8223B

SWITCHED AUDIO

EXT AUDIO

AUDIO OUT

ABSOLUTE MAXIMUM RATINGS
Symbol VS Vx Tstg Toper Supply Voltage Tuner AGC Voltage Storage Temperature Operating Temperature Parameter Value 13.5 VCC -40, +150 0, +70 Unit V
o o

C C

Symbol Rth (j-a)

Parameter Junction-ambient Thermal Resistance Max.

Value 75

Unit
o

C/W

2/10

8223B-02.TBL

THERMAL DATA

8223B-01.TBL

V

8223B-02.EPS

STV8223B
ELECTRICAL CHARACTERISTICS (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Video modulation DSB, D = 90% at B/G, 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 SUPPLY VCC ICC V19-20 R 19-20 C 19-20 Gr Supply Voltage Supply Current Input Sensitivity (RMS) Differential Input Resistance Differential Input Capacitance Gain Control Range Max Input Signal Vision Carrier Capture AFC Slope Amplitude Amplitude Difference Top Sync Level Zero Carrier Level Bandwidth Differential Gain Differential Phase Residual Carrier Signal (RMS Value) Residual 2nd Harmonic (RMS Value) Internal Bias of Emitter Follower Signal to Noise Ratio Intermodulation 1.07MHz White Noise Threshold Voltage White Noise Insertion Level Black Noise Threshold Voltage Black Noise Insertion Level Charging Current Discharge Current Charging/Discharging Ratio Maximum Sinked Current Current Slope Maximum Tuner Plus Sinked Current
S

Parameter

Test Conditions

Min. 8

Typ. 9 70 70 2 2 68 180

Max. 12.6 95

Unit V mA µVRMS k pF dB mVRMS

I17, VCC = 9V -3dB Video at Output

IF AMPLIFIER

+1dB Video at Output -1.4 See Figure 21 Top Sync to White B/G B/G -3dB Video Signal 2 1.6 7

SYNCHRONOUS VIDEO DEMODULATOR DFPC AFC S2 VA3 BG vs L VS3 BW Dg Dp Vr3c Vr3h I3 S/N VWTH VWIL VBTH VBIL I22CBG I22DBG C/D I23 S23 I23+
Notes : 1.

1.6 0.2 2.3 1.9 4.4 9 6 3 1 1 5 61 52 4.85 3.6 1.3 2.5 950 20 45 2 170 40 2.6 10 2.2

MHz µA/kHz VPP % V V MHz % Degree mV mV mA dB dB V V V V µA µA
8223B-03.TBL

DEMODULATED VIDEO OUTPUT (Pin 3)

8 6 10 10

Note 1 - Weighted CCIR-567 Note 2

3 56

AGC CIRCUIT 550 12 1300 28

TUNER AGC R24 = 5k Note 3 1.5 100 2.5 230 mA µA/dB mA

Vout black white at BW = 5MHz VN (mVRMS) 2. Video carrier relative level = 0dB, Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22) is adjusted to get 1VPP signal on output (Pin 3). 3. Additional sinked current for large increasing steps of input signal when : - Voltage Pin 22 > starting point defined Pin 24. - Output signal (Pin 3) saturated (V 3 < V BTH in BG mode).

N

= 20 log 10

3/10

STV8223B
ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Video modulation DSB, D = 90% at B/G, 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 V 8S R8 AMR SVR V15 THD R 15 S/N Parameter Input Sensitivity Limiter Input Resistance DC Voltage (Pin 8) Amplitude Modulation Rejection Supply Voltage Rejection Ratio Detected Audio Output Signal Total Harmonic Distortion Internal Deemphasis Resistor Signal to Noise Ratio Test Conditions Min. Typ. Max. 150 600 4.2 61 33 1.1 0.2 750 60 Unit µVRMS V dB dB VRMS % dB FM SOUND DEMODULATION

Note 4 Ripple signal : 100Hz, 0.5VPP

50 28 0.85 600 55

1.4 1 900

Black Picture (sync only) White Picture 250kHz Square Wave VOLUME CONTROL VC Range R 16 CRtk En EXTHD Control Range Input Resistance Crosstalk Output Noise Level (Pin 14) THD on External Signal (Pin 14) Audio Reference Voltage (Pin 9) DC Input Level Top Sync. Clamp Level DC Output Level Top Sync. Clamp Level Crosstalk Gain from Ext. Input to Output Output Swing Input Current Bandwidth Gain from Int. Input to Output Threshold Voltage Pin 13 Negative Modulation Negative Modulation
Notes : 4. AMR = 20 log

See Note 5, Weighted CCIR 468-4, (quasi peak level) input Pin 8 Measurement between IF input (Pins 19-20) and audio output (Pin 15) SAW : K2955 BPF : SFE5.5MB

47 46 47

52 50 52

dB dB dB

See Figure 22

72 55 70

77 70 80 70 0.1 4.5 85

dB k dB µV % V V V V V dB dB V µA MHz dB V V V
8223B-04.TBL

AUDIO SWITCH

Weighted CCIR 468-4, V13 = 0.5V (quasi peak level) VIN = 2VRMS, Attenuation = 0dB

0.3

VIDEO SWITCH VDC 12 VS12 V11 VS11 GEX I12 VBW GIN VTH13 No signal No signal 1.6 1.7 1.9 1.8 2 1.5 55 6 5 1 15 0 0.3 2.2 2.3

5.5 4 V12 = VDC12 = 1.5V VIN = 1VPP -0.5 0.2 Video : External - Audio : External Video : Internal - Audio : Internal 7.2

6.5 5 +0.5 0.4

MUTE (Pin 13) CONTROL INPUT 1.8

V15 (mVRMS) (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% VAM V15 (mV ) S RMS = 20 log 5. (dB) VN (mVRMS) N

4/10

STV8223B
INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output

2
1

8223B-03.EPS

Figure 3 : CVBS Output

Figure 4 : Switching Input INT/EXT

3

4

Figure 5 : IFLC

8223B-05.EPS

Figure 6 : Audio High Pass Filter

2k

2k

5

6
7

8223B-07.EPS

5/10

8223B-08.EPS

8223B-06.EPS

8223B-04.EPS

STV8223B
INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 7 : 2nd IF Sound Input (Pin 8) Audio and 2nd IF Decoupling (Pin 9) Figure 8 : Internal Video Input

600

600

8

9
10

Figure 9 : Video Switch Output

8223B-09.EPS

Figure 10 : External Video Input

11

12

8223B-11.EPS

Figure 11 : Volume Control + Mute

Figure 12 : Audio Switch Output

13

14
8223B-14.EPS 8223B-13.EPS

Figure 13 : FM Demodulated Audio Output

Figure 14 : External Audio Input

750 15
8223B-15.EPS

16

6/10

8223B-16.EPS

8223B-12.EPS

8223B-10.EPS

STV8223B
INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 15 : VCC Figure 16 : IF Input

1k

15V

19

1k

17

20

8223B-17.EPS

Figure 18 : AGC Capacitor

Figure 19 : Tuner AGC Output

23

22
8223B-19.EPS 8223B-20.EPS 8223B-21.EPS

Figure 20 : Tuner AGC Starting Point Adjustment

24

7/10

8223B-18.EPS

STV8223B
Figure 21 : AFC Voltage Pin 2 vs IF Frequency
8 AFC VOLTAGE (PIN 2) (V) VOLUME CONTROL ATTENUATION (dB) 7 6 5 4 3 2 1
8223B-22.EPS

Figure 22 : Volume Control Attenuation vs V13
0 -10 -20 -30 -40 -50 -60 -70 1.0 2.0 3.0 V13 (V) 4.0 5.0
8223B-23.EPS 8223B-26.EPS 8223B-25.EPS

Current Conversion with 100k/100k Bridge

0 38.55

-80

38.75 38.95 39.15 IF FREQUENCY (MHz)

39.35

Figure 23 : Tuner AGC Output Current vs VIN (R24 is external adjustment Pin 24)
TUNER AGC OUTPUT CURRENT (mA) 2 1.75 1.5 1.25 1 0.75 0.5 0.25
8223B-24.EPS

Figure 24 : Video Signal to Noise Ratio (Pin 3) as a function of IF Input Signal (Pins 19-20) Weighted CCIR-567
80 70 60 S/N (dB) 50 40 30 20 10

R24 = 1k R24 = 3k R24 = 5k

0 10-1 1 VIN 10 (mV RMS ) 102 103

0 0.01

0.1

1 VIN (mVRMS)

10

100

Figure 25 : Black and White Noise Inverter
V3 (V) 4.85 4.2 3.6 2.5 1.9 1.3 White Spike Noise Clamp Top White White Noise Level Insertion Black Noise Level Insertion Top Synchronization Black Spike Noise Clamp t

8/10

C9 10µF L4 R11 220 10µF C21 47µF C20 C18 1µF 100nF
22 21 20 19 18 17 16 15 14 13 24 23

External Sound Input (From SCART)

C8

3.3µH C6 C7 68nF 4.7µF

IF1

VIDEO SAW FILTER BGDK R32 10k

Demodulated Sound Output (To SCART) Switched Sound Output 3.3k +9V

APPLICATION DIAGRAM (B/G/D/K)

Tuner AGC Output

Volume control Mute C31 100nF SW1

C16 2.2µF P1 10k

R14 27k

P2 10k

R15 6.8k

C17 10nF

STV8223B
1 2 3 4 5 6 7 8 9 10 11 12

12V LC1 C25 10µF C26 100nF

R35

Q4 BC337 1nF C15 100nF R13 330 38.9MHz C29 10nF R24 4.7k C24 1nF +9V

Tuner AGC 9V Delay

15

C30 470nF

R34

C33 10µF

390

R29 75 C27 470nF

External CVBS Input (From SCART)

9V

DZ1 BZX55C 10V

CVBS Ouput R28 4.7k Q3 BC547 +9V SW4 STD

R17 100k Switching Voltage C28 1.8k 68pF 1N4148 D2 BFP 5.5MHz CF1 R21

AFC Output C32 10nF R20 1k

R16 100k

R25 2.7k

R26 3.9k

R10 22 BC547

BFP 6.5MHz CF2 D1 1N4148 R22 150

Q2 R27 1.8k TRAP FILTER (5.5MHz - 6.5MHz) L6 8.2µH CF3 R12 2.2k R9 560 R18 75 CVBS Output (To SCART)

STV8223B

9/10

8223B-27.EPS

STV8223B
PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP
E E1

A1

A2

Stand-o ff B B1 e e1 e2

L c D E 24 13 F
.015 0,38 Gage Plane

A

1

12 e3
SDIP24

e2

Dimensions A A1 B B1 C D E E1 e e1 e2 e3 L

Min. 0.51 3.05 0.36 0.76 0.23 22.61 7.62 6.10

Millimeters Typ.

Max. 5.08 4.57 0.56 1.14 0.38 23.11 8.64 6.86

Min. 0.020 0.120 0.0142 0.030 0.0090 0.890 0.30 0.240

Inches Typ.

Max. 0.20 0.180 0.0220 0.045 0.0150 0.910 0.340 0270

3.30 0.46 1.02 0.25 22.86 6.40 1.778 7.62

0.130 0.0181 0.040 0.0098 0.90 0.252 0.070 0.30

2.54

3.30

0.10

0.130

Information furni shed is believed to be accurate and reliable. However, SGS-THOMSON Micr oelectronics 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 und erany patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This pu blication 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. © 1997 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I 2C 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 - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

10/10

SDIP24.TBL

10.92 1.52 3.81

0.430 0.060 0.150

PMSDIP24.EPS