STV8211
VIDEO & SOUND IF SYSTEM
August 1994
ADVANCE DATA
.
VERY LOW CURRENT ABSORPTION
.
3 STAGE IF GAIN CONTROLLED AMPLIFIER
.
SYNCHRONOUS VIDEO DEMODULATOR
.
WHITE SPOT AND NOISE INVERTER
.
AGC CIRCUIT WITH NOISE GATING
.
TUNER AGC OUTPUT FOR PNP TUNERS
.
FM DETECTOR
.
AF AMPLIFIER WITH DC VOLUME CON-
TROL
.
AFC
.
2 V
PP
ON VIDEO OUTPUT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TUNER DELAY RESISTOR
TUNER OUTPUT CURRENT
NOT TO BE CONNECTED
IF INPUT
IF INPUT
GROUND
AUDIO OUTPUT
SOUND VOLUME CONTROL
FM TANK LC
AGC MEMORY CAPACITOR
IF LC
IF LC
VIDEO PEAKING
AFC TANK LC
AFC OUTPUT
CVBS OUTPUT
NOT TO BE CONNECTED
2nd IF SOUND CHANNEL INPUT
2nd IF SOUND CHANNEL INPUT
V
CC
8211-01.EPS
PIN CONNECTIONS
DIP20
(Plastic Package)
ORDER CODE : STV8211
DESCRIPTION
The STV8211 is a monolithic integrated circuit in
DIP20 package for black & white television receiv-
ers using PNP tuners. It is intended to operate with
a negatively modulated vision carrier and fre-
quency modulated sound carrier. Used with
TEA2037A (H/V deflection circuit), this IC permits
a complete low-cost solution for black and white
applications.
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.
1/8
2
3
5
6
7
8
9
10
16
17
18
19
20
11
12
14
15
TUNER
DELAY
AGC
1
3 IF
AMPLIFIER
REFERENCE
AMPLIFIER
38.9MHz
AFC
38.9MHz
Video
Peaking
I TUNER OUT
IF INPUT
IF INPUT
AFC OUTPUT
RTD
AUDIO OUTPUT
V
9V
CC
VIDEO
AMPLIFIER
WHITE & NOISE
SPOT INVERTER
CVBS OUTPUT
5.5MHz
LPF
FM
DICRETE
VOLUME
CONTROL
4 STAGE LIMITER
5.5MHz
BAND GAP
REFERENCE
VOLTAGE
STV8211
8211-02.EPS
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
13.5
V
V
X
Tuner AGC Voltage
V
S
V
P
Power Dissipation at T
amb
= 70
o
C
880
mW
T
stg
Storage Temperature
- 40, + 150
o
C
8211-01.TBL
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th (j-a)
Junction-ambient Thermal Resistance
Max.
80
o
C/W
8211-02.TBL
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
o
C, V
CC
= 9V, IF input = 10mV
RMS
top sync, D = 90%, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mV
RMS
, f
m
= 1kHz, Audio BW = 20kHz,
f =
25kHz,
Volume attenuation= 0dB, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
SUPPLY
Supply Voltage
8
9
12.8
V
Supply Current
14
20
28
mA
8211-03.TBL
STV8211
2/8
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
o
C, V
CC
= 9V, IF input = 10mV
RMS
top sync, D = 90%, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mV
RMS
, f
m
= 1kHz, Audio BW = 20kHz,
f =
25kHz,
Volume attenuation = 0dB, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ. Max.
Unit
IF AMPLIFIER
AGC Range
58
64
67
dB
IF - Sensitivity (RMS)
Video out -3dB
70
V
R Input Differential
Guaranteed by process
1
1.5
2
k
C Input Stray
2
pF
DEMODULATED VIDEO OUTPUT
S/N Video (BW = 5MHz)
IF inp. = 10mV
RMS
, 20 log
10
(
WH
-
BL
)
N
RMS
49
55
dB
Intermodulation 1.07MHz
AGC open loop, Picture carrier = 0dB,
Chrominance carrier = -3.2dB,
Sound carrier = -20dB
50
dB
Detected Video Output
Peak-to-peak (positive)
1.8
2
2.4
V
Top Synchro 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
3
7
%
White Noise Clamp
Referred to the video output
see Figure 6
4.5
V
White Noise Insertion
3.2
V
Video Output Current Capability
1.2
2
2.6
mA
Residual Output Carrier (RMS)
At 38.9MHz
At 77.8MHz
10
20
mV
mV
AFC
AFC Slope
With R
Load
= 200k
, see Figure 3
25
40
60
mV/kHz
AGC CIRCUIT
Maximum I Charge
550
900
1200
A
Maximum I Discharge
14
20
26
A
I
CH /
I
DISCH
Ratio
45
-
TUNER AGC
Sinked Current
Suitable for Mosfet-NCH
1.15
2
2.6
mA
Slope
RTD = 0
10k
600
A/dB
DEMODULATED AUDIO OUTPUT
Detected Output Audio Signal (RMS)
120
270
350
mV
Total Harmonic Distorsion
0.5
2
%
Amplitude Modulation Rejection
m = 30%
40
53
dB
2nd IF Sound Sensitivity -3dB FM
Detected Audio Signal (RMS)
200
V
S
+
N
N
f =
25kHz for signal
f= 0 after deemphasis (BW = 20kHz)l
50
60
dB
Thermal Drift of Volume
0.05
dB
o
C
Input Resistance Limiter
400
560
720
Volume Control versus V
9
See Figure 4
V
9
= 4.5V
V
9
= 2.5V
V
9
= 0.9V
12
65
0
18
74
24
dB
dB
dB
8211-04.TBL
STV8211
3/8
1
2
3
5
6
7
8
9
10
16
17
18
19
20
11
12
14
15
100nF
27pF
4.7
H
200
10nF
10nF
4
4
100nF
10
F
9 V
DC
10
H
100
10k
1
F
47pF
1.8k
Q = 80
38.9MHz
2.2k
220
6.2 V
Z
100nF
9V
180
SW1
A
B
C
IoT
V1TUN
33nF
100pF
5.5MHz
Q > 40
Volume
Control
I Audio Output
with Deemphasis
4.7k
1k
L Audio Signal
without Deemphasis
47nF
100nF
50
FM Input
VIF Input
38.9MHz
M = 100%
R = 10%
AMDSB
47pF
38.9MHz
Q = 80
470nF
10nF
9V
D
AFC Output
100k
100k
E
E
Video Out 2
Video Out 1
STV8211
8211-03.EPS
TEST CIRCUIT
0
-15
0
2
4
6
8
10
F (MHz)
OUT
V
(dB)
-3
-9
-6
-12
8211-04.EPS
Figure 1 : Output Signal Bandwidth without
Video peaking
0
-15
0
2
4
6
8
10
F (MHz)
OUT
V
(dB)
-3
-12
-9
-6
8211-05.EPS
Figure 2 : Output Signal Bandwidth with
Video peaking
STV8211
4/8
IF FREQUENCY
(MHz)
AFC OUTPUT
VOLTAGE (V)
38.5
39.3
38.7
38.9
39.1
0
2
4
6
8
8211-06.EPS
Figure 3 : AFC Voltage versus Input Frequency
ATTENUATION
(V)
1
2
3
4
5
0
-20
-40
-60
-80
-100
V
(V)
9
8211-07.EPS
Figure 4 : Volume Control Attenuation versus
Voltage in Pin 9
C
Processor
Pushpull
Output
9
STV8211
80k
10k
ST63XX
8211-08.EPS
Figure 5 : Typical Connection from
P to STV8211 for Remote Volume Control (Pin 9)
4.5
3.9
3.2
2.5
1.9
1.3
t ( s)
14
V
(V)
White spike noise clamp
Top white
White noise level insertion
Noise level insertion
Top synchronization
Black spikes noise clamp
8211-09.EPS
Figure 6 : Black and White Noise Inverter
STV8211
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