66GS-62 (serv.man9). Section 5 - IC additional information — Sharp TV Service Manual (repair manual)

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66GS-62 (serv.man9)
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10
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Document
Service Manual
Brand
Device
TV / CTR / Section 5 - IC additional information
File
66gs-62-sm9.pdf
Date

View Sharp 66GS-62 (serv.man9) Service Manual online

21
66GS-62H
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage
note 1
4.75
5.00
5.50
V
I
P
supply current
52
61
70
mA
V
i(VIF)(rms)
VIF input signal voltage sensitivity
(RMS value)
1 dB video at output
60
100
µ
V
G
VIF(cr)
VIF gain control range
see Fig.10
60
66
dB
f
VIF
vision carrier operating frequencies
see Table 28
33.4
MHz
33.9
MHz
38.0
MHz
38.9
MHz
45.75
MHz
58.75
MHz
f
VIF
VIF frequency window of digital
acquisition help
related to f
VIF
; see Fig.7
±
2.3
MHz
V
o(v)(p-p)
video output signal voltage
(peak-to-peak value)
normal mode; see Fig.9
1.7
2.0
2.3
V
trap bypass mode;
see Fig.9
0.95
1.10
1.25
V
G
dif
differential gain
“CCIR 17”; note 2
B/G standard
5
%
L standard
7
%
ϕ
dif
differential phase
“CCIR 17”
2
4
deg
B
v(
3dB)(trap)
3 dB video bandwidth including
sound carrier trap
C
L
< 20 pF; R
L
> 1 k
;
AC load; note 3
f
trap
= 4.5 MHz
3.95
4.05
MHz
f
trap
= 5.5 MHz
4.90
5.00
MHz
f
trap
= 6.0 MHz
5.40
5.50
MHz
f
trap
= 6.5 MHz
5.50
5.95
MHz
α
SC1
trap attenuation at first sound carrier
M/N standard
30
36
dB
B/G standard
30
36
dB
S/N
W
weighted signal-to-noise ratio of
video signal
see Fig.5; note 4
56
59
dB
PSRR
17
power supply ripple rejection at
pin 17
f
ripple
= 70 Hz; video signal;
grey level; positive and
negative modulation;
see Fig.8
20
25
dB
B
v(
1dB)
1 dB video bandwidth
C
L
< 20 pF; R
L
> 1 k
;
AC load; trap bypass mode
5
6
MHz
AFC
stps
AFC steepness
I
21
/
f
0.85
1.05
1.25
µ
A/kHz
V
o(AF)(rms)
audio output signal voltage at pin 8
(RMS value)
27 kHz FM deviation;
50
µ
s de-emphasis
430
540
650
mV
THD
audio
total harmonic distortion of audio
signal
27 kHz FM deviation;
50
µ
s de-emphasis
0.15
0.50
%
AM; m = 54%
0.5
1.0
%
ICs ADITIONAL INFORMATION: TDA9885 (IC201)
22
66GS-62H
Notes
1. Values of video and sound parameters can be decreased at V
P
= 4.75 V.
2. Condition: luminance range (4 steps) 0 to 80%.
3. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound carrier traps
(see Figs 16 to 21;
H (s)
 is the absolute value of transfer function).
4. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 17). B = 5 MHz weighted
in accordance with
“CCIR 567”.
5. The intercarrier output signal at pin 12 can be calculated by the following formula taking into account the internal
video signal with 1.1 V (p-p) as a reference:
where:
= correction term for RMS value,
= sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB,
6 dB = correction term of internal circuitry and
±
3 dB = tolerance of video output and intercarrier output amplitude
V
o(intc)(rms)
.
6. The reference input pin 15 is able to operate as a 1-pin crystal oscillator as well as input terminal with external
reference signal, e.g. from the tuning system.
B
AF(
3dB)
3 dB audio frequency bandwidth for
FM
without de-emphasis;
dependent on loop filter at
pin 4
80
100
kHz
S/N
W(audio)
weighted signal-to-noise ratio of
audio signal
27 kHz FM deviation;
50
µ
s de-emphasis;
vision carrier unmodulated
52
56
dB
AM; m = 54%
45
50
dB
α
AM(sup)
AM suppression of FM demodulator
50
µ
s de-emphasis;
AM: f = 1 kHz; m = 0.54
referenced to 27 kHz
FM deviation
40
46
dB
PSRR
8(AM)
power supply ripple rejection at pin 8
f
ripple
= 70 Hz; see Fig.8
20
26
dB
PSRR
8(FM)
power supply ripple rejection at pin 8
f
ripple
= 70 Hz; see Fig.8
14
20
dB
V
o(rms)
IF intercarrier level (RMS value),
valid also for radio
QSS mode; SC
1
; sound
carrier 2 off
90
140
180
mV
L standard; without
modulation
90
140
180
mV
intercarrier mode; SC
1
;
sound carrier 2 off
note 5
mV
f
ref
frequency of reference signal at
pin 15
note 6
4
MHz
V
ref(rms)
amplitude of reference signal source
(RMS value)
operation as input terminal
80
400
mV
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
o(intc)(rms)
1.1 V (p-p)
1
2 2
-----------
×
10
V
i SC
(
)
V
i PC
(
)
--------------- dB
(
)
6 dB
3 dB
±
+
20
----------------------------------------------------------------
×
=
1
2 2
-----------
V
i SC
(
)
V
i PC
(
)
--------------- dB
(
)
ICs ADITIONAL INFORMATION: TDA9885 (IC201)
23
66GS-62H
BLOCK DIAGRAM
TAGC
C
VAGC pos
C
BL
VIF-PLL
4 MHz
external
AFC
video output 2 V (p-p)
[1.1 V (p-p) without trap]
AUD
C
AF
de-emphasis
network
FM-PLL filter
sound intercarrier output
C
AGC
AGND
V
P
VIF1
VIF-AGC
RC VCO
DIGITAL VCO CONTROL
AFC
DETECTOR
VIDEO TRAPS
4.5 to 6.5 MHz
NARROW-BAND FM-PLL
DETECTOR
I
2
C-BUS TRANSCEIVER
VIF-PLL
SINGLE REFERENCE QSS MIXER/
INTERCARRIER MIXER AND
AM-DEMODULATOR
SIF-AGC
SUPPLY
1
2
 14
 16
19
 15
 21
17
8
6
5
4
12
7
 11
 10
18
20
23
24
OUTPUT
PORTS
MAD
AUDIO PROCESSING
AND SWITCHES
9
TUNER AGC
C
AGC neg
3
22
crystal
and MAD select
TDA9885
n.c.
 13
OP1
OP2
SCL
SDA
DGND
SIOMAD
FMPLL
CVBS
TOP
VIF2
SIF1
SIF2
DEEM
AFD
REF
VAGC
VPLL
filter
(1)
(1)
Not connected for TDA9885.
reference
or
ICs ADITIONAL INFORMATION: TDA9885  (IC201)
24
66GS-62H
PINNING
SYMBOL
PIN
DESCRIPTION
VIF1
1
VIF differential input 1
VIF2
2
VIF differential input 2
OP1
3
output 1 (open-collector)
FMPLL
4
FM-PLL for loop filter
DEEM
5
de-emphasis output for capacitor
AFD
6
AF decoupling input for capacitor
DGND
7
digital ground
AUD
8
audio output
TOP
9
tuner AGC TakeOver Point (TOP)
SDA
10
I
2
C-bus data input/output
SCL
11
I
2
C-bus clock input
SIOMAD
12
sound intercarrier output and MAD
select
n.c.
13
not connected
Note
1. Not connected for TDA9885.
TAGC
14
tuner AGC output
REF
15
4 MHz crystal or reference input
VAGC
16
VIF-AGC for capacitor; note 1
CVBS
17
video output
AGND
18
analog ground
VPLL
19
VIF-PLL for loop filter
V
P
20
supply voltage (+5 V)
AFC
21
AFC output
OP2
22
output 2 (open-collector)
SIF1
23
SIF differential input 1
SIF2
24
SIF differential input 2
SYMBOL
PIN
DESCRIPTION
handbook, halfpage
TDA9885T
TDA9886T
MXXxxx
1
2
3
4
5
6
7
8
9
10
11
12
VIF1
VIF2
OP1
FMPLL
DEEM
AFD
DGND
AUD
TOP
SDA
SCL
SIOMAD
SIF2
SIF1
OP2
AFC
VP
VPLL
AGND
CVBS
VAGC
(1)
REF
TAGC
n.c.
24
23
22
21
20
19
18
17
16
15
14
13
Fig.2  Pin configuration for SO24.
(1) Not connected for TDA9885.
handbook, halfpage
TDA9885TS
TDA9886TS
MXXxxx
1
2
3
4
5
6
7
8
9
10
11
12
VIF1
VIF2
OP1
FMPLL
DEEM
AFD
DGND
AUD
TOP
SDA
SCL
SIOMAD
SIF2
SIF1
OP2
AFC
VP
VPLL
AGND
CVBS
VAGC
(1)
REF
TAGC
n.c.
24
23
22
21
20
19
18
17
16
15
14
13
Fig.3  Pin configuration for SSOP24.
(1) Not connected for TDA9885.
ICs ADITIONAL INFORMATION: TDA9885  (IC201)
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