VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES

0.3. %. Notes : 3. Triggered on white level. 4. AMR =20 log. V15 (mVRMS) ..... 2.54. 0.100. SDIP24.TBL. Information furnished is believed to be accurate and ...
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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.

11/11