SGS Thomson Microelectronics STV8211 Datasheet

.

VERYLOWCURRENT ABSORPTION

.

3 STAGEIF GAIN CONTROLLEDAMPLIFIER

.

SYNCHRONOUS VIDEO DEMODULATOR

.

WHITESPOTANDNOISEINVERTER

.

AGCCIRCUIT WITH NOISEGATING

.

TUNERAGC OUTPUTFORPNPTUNERS

.

FM DETECTOR

.

AF AMPLIFIER WITH DC VOLUME CON­TROL

.

AFC

.

2VPPONVIDEOOUTPUT

DESCRIPTION

The STV8211is a monolithic integrated circuit in
DIP20 package for black& whitetelevision receiv­ers usingPNP tuners. It is intendedtooperatewith
a negatively modulated vision carrier and fre­quency modulated sound carrier. Used with
TEA2037A(H/V deflectioncircuit), this IC permits
a complete low-cost solution for black and white
applications.

STV8211

VIDEO & SOUND IF SYSTEM

ADVANCE DATA

DIP20

(Plastic Package)

ORDER CODE : STV8211

PIN CONNECTIONS

CC

1
2
3
4
5
6
7
8
9
10

TUNER DELAY RESISTOR

TUNER OUTPUT CURRENT

V

NOT TO BE CONNECTED

IF INPUT
IF INPUT

GROUND

AUDIO OUTPUT

SOUND VOLUME CONTROL

FM TANK LC

August 1994

This isadvance informationon a new product now in developmentor undergoingevaluation. Detailsare subjectto change withoutnotice.

20

AGC MEMORY CAPACITOR

19

IF LC

18

IF LC

17

VIDEO PEAKING

16

AFC TANK LC

15

AFC OUTPUT

14

CVBS OUTPUT

13

NOT TO BE CONNECTED

12

2nd IF SOUND CHANNEL INPUT

11

2nd IF SOUND CHANNEL INPUT

8211-01.EPS

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STV8211

BLOCK DIAGRAM

I TUNER OUT

IF INPUT
IF INPUT

V9V

CC

AUDIO OUTPUT

2

5
6

3

8

RTD

1

TUNER

DELAY

3IF

AMPLIFIER

BAND GAP

REFERENCE

VOLTAGE

VOLUME

CONTROL

910

5.5MHz

AGC

DICRETE

FM

38.9MHz

REFERENCE

AMPLIFIER

LPF

Video
Peaking

1617181920

AFC

VIDEO

AMPLIFIER

WHITE & NOISE

SPOT INVERTER

4 STAGE LIMITER

STV8211

7

38.9MHz

15

AFC OUTPUT

14

12
11

CVBS OUTPUT

5.5MHz

ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

V

X

P Power Dissipation at T

T

stg

Supply Voltage 13.5 V
Tuner AGC Voltage V

=70oC 880 mW

amb

S

Storage Temperature - 40, + 150

THERMALDATA

Symbol Parameter Value Unit

R

th(j-a)

Junction-ambient Thermal Resistance Max. 80

ELECTRICAL CHARACTERISTICS

=25oC, VCC=9V, IF input = 10mV

(T

amb

Soundcarrierinput : 5.5MHz,10mV

RMS,fm

topsync,D = 90%, VideoBW= 5MHz,

RMS

=1kHz,Audio BW = 20kHz, ∆f=±25kHz,

Volumeattenuation= 0dB, unless otherwisespecified)

Symbol Parameter Test conditions Min. Typ. Max. Unit

SUPPLY

Supply Voltage 8 9 12.8 V
Supply Current 14 20 28 mA

o

o

C/W

8211-02.EPS

V

C

8211-01.TBL

8211-02.TBL

8211-03.TBL

2/8

STV8211

ELECTRICAL CHARACTERISTICS

=25oC, VCC=9V,IF input = 10mV

(T

amb

Soundcarrierinput : 5.5MHz,10mV

RMS,fm

Volumeattenuation= 0dB, unless otherwisespecified)

Symbol Parameter Test conditions Min. Typ. Max. Unit

IF AMPLIFIER

AGC Range 58 64 67 dB
IF - Sensitivity (RMS) Video out -3dB 70 µ
R Input Differential
C Input Stray 2pF

DEMODULATED VIDEO OUTPUT

S/N Video (BW = 5MHz) IF inp. = 10mV
Intermodulation 1.07MHz AGC open loop, Picture carrier = 0dB,

Detected Video Output
Peak-to-peak (positive)

TopSynchro Output Level 1.9 V
Video Bandwidth with Output Filter -3dB, see Figures 1 and 2 7 MHz
Differential Phase 3 7 Degree
Differential Gain 37 %
White Noise Clamp
White Noise Insertion 3.2 V
Video Output Current Capability 1.2 2 2.6 mA
Residual Output Carrier (RMS) At 38.9MHz

AFC

AFC Slope

AGC CIRCUIT

Maximum I Charge 550 900 1200 µ
Maximum I Discharge 14 20 26 µ
I

CH /IDISCH

TUNER AGC

Sinked Current Suitable for Mosfet-NCH 1.15 2 2.6 mA
Slope

DEMODULATED AUDIO OUTPUT

Detected Output Audio Signal (RMS) 120 270 350 mV
TotalHarmonic Distorsion 0.5 2 %
Amplitude ModulationRejection m = 30% 40 53 dB
2nd IF Sound Sensitivity -3dB FM

Detected Audio Signal (RMS)
S + N

N
Thermal Drift of Volume 0.05
Input Resistance Limiter 400 560 720 Ω

VolumeControl versus V

Ratio 45 -

9

top sync, D =90%, VideoBW = 5MHz,

RMS

=1kHz,AudioBW = 20kHz,∆f=±25kHz,

Guaranteed by process

V

9

V

9

(WH− BL)

10

= 2.5V
= 0.9V

N

RMS

, 20 log

RMS

Chrominance carrier = -3.2dB,
Sound carrier = -20dB

Referred to the video output
see Figure6

At 77.8MHz

With R

= 200kΩ, see Figure 3

Load

RTD = 0 ÷ 10kΩ

∆f=±25kHz for signal
∆f= 0 after deemphasis (BW = 20kHz)l

See Figure4 V9= 4.5V

1 1.5 2

49 55 dB

50 dB

1.8 2 2.4 V

4.5 V

1020mV

25 40 60 mV/kHz

600

µA/dB

200

50 60 dB

0

12

187424

65

kΩ

mV

µV

dB

o

dB
dB
dB

V

A
A

C

8211-04.TBL

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