ICs for TV
AN8934FA
Video signal processing and QPSK demodulation IC for BS/CS broadcasting
s
Overview
The AN8934FA is a single chip IC integrating video
signal processing, QPSK demodulation, changeover
switches of detection and bit-stream signals for BS/CS
broadcasting.
36
12.00
±0.20
10.00
±0.20
25
24
Unit: mm
M
ain
Di
sc te
on na
tin nc
ue e/
d
37
(1.425)
13
s
Features
s
Applications
•
BS/CS tuner built-in TV and VCR
d
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1
12
(14.25)
0.65
•
4.5 MHz L.P.F. for video and 5.7 MHz B.P.F. for
sound built-in
•
C/N detection circuit built-in
•
Changeover between external input and internal
signal of detection and bit-stream signals
•
2 systems of detection output (capable of 75
Ω
drive) and 1 system of bit-stream output (capable
of 75
Ω
drive)
•
Bit-stream signal detection circuit of external in-
put built-in
•One
crystal for base band signal processing block
due to a joint use with PCM processing IC
MN88831. (18.432 MHz)
48
1.95
±0.20
+0.10
0.30
−0.05
10.00
±0.20
12.00
±0.20
(1.00)
0.10
±0.10
+0.1
0.15
−0.0
5
0
0° to 10°
Seating plane
0.50
±0.20
QFP048-P-1010C
Ma
int
en
an
ce
/D
isc
on
tin
ue
1
AN8934FA
s
Block Diagram
QPSK V
CC
ICs for TV
36
35
34
33
32
31
30
29
28
27
26
25
Video out
C/N out
AGC
N.C.
CLK out
PD in
41
P.D.
VCO out
VCO in
42
1/6
43
VCO
CR
ref.
CLK V
CC
44
Internal
bit stream in
NR SW
45
46
Unswitch V
CC
47
BB in
48
s
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
2
Description
Detection output changeover 1
Detection output changeover 2
External detection signal input
Video output mute
Input amp. gain adjustment
External bit-stream input
Reference voltage
C/N detection voltage adjustment
Bit-stream output
d
DET
i
pla
adj.
c
5
n
Pl
ea
ne
6
d
External bit stream in
lu
se
pla m
3 V
d m
7
es
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ref.
ain foll
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d d
C/N
t
adj. 8
te ow
p:/ fo
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/w llo dis
Bit stream out
an
9
nan ing
isc n
ww wi co on ce c fo
t
.se ng ntin
CS/BS
n
10
ty e ty ur
UR ue i ue pe pe Pr
mi
SCC/JCSAT/AFC ctrl. 11
d
od
co L a d t ty
uc
n.p
out
o
JSB
yp
12
pe
DET
b
for
t li
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Non
linear
Video
Pulse
clamp1
M
ain
Di
sc te
on na
tin nc
ue e/
d
I out
38
Comp.
39
Costas
Pulse
clamp2
Q out
37
500 kHz
L.P.F.
500 kHz
L.P.F.
24
23
22
21
20
19
Video V
CC
QPSK/CLK GND
VCO2
P.D.
N.R.
40
VCO1
1/8
AGC
Noise
amp.
9 MHz
B.P.F.
18
Video GND
Reg.
5.7 MHz
B.P.F.
4.5 MHz
17
L.P.F.
16
15
14
13
Bit stream detector
Bit
DET
BS/CS
AFC
DET out for MUSE
1
2
3
External DET in
Ma
int
en
an
ce
/D
isc
on
Video MUTE
SW1
SW2
tin
ue
4
Pin No.
10
11
Description
BS/CS mode changeover
CS mode changeover / AFC control
Detection output 1
Detection output 2
Bit-stream detection
Detection output 3
Filter reference
4.5 MHz L.P.F. input
GND (Video system)
12
13
14
15
16
17
18
ICs for TV
s
Pin Descriptions (continued)
Pin No.
19
20
21
22
23
24
Description
4.5 MHz L.P.F. output
Pulse clamp input 1
Pulse clamp reference
Video amp. output
Pulse clamp input 2
Pin No.
34
35
36
37
38
Description
Costus output (+)
Costus output (−)
Supply voltage (QPSK)
Data output Q
Data output I
AN8934FA
27
28
29
Eye-pattern output Q
Eye-pattern input Q
QPSK AGC
30
Eye-pattern input I
31
32
33
Eye-pattern output I
N.C.
VCO phase error voltage output
s
Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
Symbol
V
CC
I
CC
P
D
Power dissipation
*2
tin
Operating ambient temperature
*1
Storage temperature
*1
s
Recommended Operating Range
Parameter
Supply voltage
Ma
int
en
an
ce
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for T
a
=
25°C.
*2 : The power dissipation shown is the value for T
a
=
80°C. For the independent IC without a heat sink.
Symbol
V
CC
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42
43
Data clock VCO output
Data clock VCO input
44
45
Supply voltage (clock)
Internal bit-stream input
Noise reduction switch
46
47
48
Supply voltage (input amp.)
Internal detection signal input
Rating
5.7
Unit
V
136
431
mA
°C
mW
°C
T
opr
T
stg
−20
to
+85
−55
to
+150
Range
Unit
V
4.5 to 5.5
3
M
ain
Di
sc te
on na
tin nc
ue e/
d
Supply voltage (Video system)
Video signal output
39
40
25
26
Data clock output
C/N detection voltage output
41
GND (QPSK·clock)
Data lock phase error voltage input
/D
isc
on
ue
AN8934FA
s
Electrical Characteristics at T
a
=
25°C
Parameter
Supply current
Standby current
Input amp. gain Int.1
Symbol
I
TOT
I
STD
G
12A1
Conditions
No signal, all of V
CC
are 5 V
No signal, V
CC
(pin 47)
=
5 V, other
V
CC
( pin 24, 36, 44)
=
0 V
Input is pin 48 (V
IN48
=
0.7 V[p-p], 1 MHz)
Output is pin 12 (V
IN6
=
0.5 V[p-p],
2 MHz square-wave)
V
IN48
=
0.7 V[p-p], 8.5 MHz
Difference from G
12A1
(V
IN6
=
0.5 V[p-p],
2 MHz square-wave)
V
IN48
=
0.7 V[p-p], 1 MHz (18 MHz)
Difference from G
12A1
(V
IN6
=
0.5 V[p-p],
2 MHz square-wave)
Min
60
20
7
Typ
92
33
8.5
ICs for TV
Max
120
41
10
Unit
mA
mA
dB
M
ain
Di
sc te
on na
tin nc
ue e/
d
Input amp. gain Int.2
∆G
12A2
−
0.8
Input amp. gain Int.3
∆G
12A3
−
0.8
Input amp. gain Int.4
∆G
12A4
V
IN48
=
0.7 V[p-p], 1 MHz (15.8 MHz)
Difference from G
12A1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
0.34
Input amp. gain Int.5
∆G
12A5
V
IN48
=
0.7 V[p-p], 1 MHz (min.)
Difference from G
12A1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
Input amp. gain Int.6
∆G
12A6
V
IN48
=
0.7 V[p-p], 1 MHz
Difference from G
12A1
(V
IN6
=
no input)
−1
Input amp. gain Int.7
∆G
13A1
V
IN48
=
0.7 V[p-p], 1 MHz, Output is pin 13
Difference from G
12A1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
V
IN48
=
0.7 V[p-p], 1 MHz, Output is pin 13
Difference from G
12A1
(V
IN6
=
no input)
−1
Input amp. gain Int.8
∆G
13A2
∆G
15(1)
−1
−1
−
0.3
0.2
dB
/D
isc
on
tin
Input amp. gain Int.9
Ma
int
en
an
ce
Input amp. gain Ext.1
G
12B1
Input amp. gain Ext.2
∆G
12B2
Input amp. gain Ext.3
∆G
13B1
4.5MHz L.P.F. gain 1
4.5MHz L.P.F.
frequency characteristic 1
4.5MHz L.P.F.
frequency characteristic 2
G
19(1)
∆G
19(1)
∆G
19(2)
4
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−
0.5
−
0.2
dB
0.64
0.94
dB
−30
−10
dB
0
1
dB
0
1
dB
0
0
1
1
dB
dB
V
IN48
=
0.7 V[p-p], 1 MHz, Output is pin 15
Difference from G
12A1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
Input is pin 3 (V
IN3
=
0.7 V[p-p], 1 MHz)
Output is pin 12 (V
IN6
=
0.5 V[p-p],
2 MHz square-wave)
V
IN3
=
0.7 V[p-p], 8.5 MHz
Difference from G
12B1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
5
6
7
dB
−
0.8
−
0.3
0.2
dB
V
IN3
=
0.7 V[p-p], 1 MHz, Output is pin 13
Difference from G
12B1
(V
IN6
=
0.5V[p-p],
2 MHz square-wave)
V
IN17
=
0.4 V[p-p], 0.1 MHz
V
IN17
=
0.4 V[p-p], 2.5 MHz
Difference from G
19(1)
V
IN17
=
0.4 V[p-p], 4.2 MHz
Difference from G
19(1)
−1
0
1
dB
−1
−2.2
−5.5
−
0.3
−1.5
−3.5
0.4
−
0.8
−1
dB
dB
dB
ue
ICs for TV
s
Electrical Characteristics at T
a
=
25°C (continued)
Parameter
4.5MHz L.P.F.
frequency characteristic 3
4.5MHz L.P.F.
frequency characteristic 4
4.5MHz L.P.F. group delay
Video amp. gain 1
Symbol
∆G
19(3)
∆G
19(4)
∆GD
19
G
22(1)
Conditions
V
IN17
=
0.4 V[p-p], 4.5 MHz
Difference from G
19(1)
V
IN17
=
0.4 V[p-p], 5.73 MHz
Difference from G
19(1)
V
IN17
=
0.4 V[p-p], Difference of
group delay from 0.1 MHz to 3.58 MHz
V
IN20
=
0.4 V[p-p], 0.1 MHz
V
IN20
=
0.4 V[p-p], 4.5 MHz
Difference from G
22(1)
V
IN20
=
0.4 V[p-p], 0.1 MHz
Min
−8.5
−70
13.4
Typ
−4
−50
0
14
−
0.2
−40
AN8934FA
Max
−1
−35
70
14.6
0.2
−35
Unit
dB
dB
ns
dB
dB
dB
Video amp. gain 3
G
22(3)
Video amp. N.R. characteristic
C/N detection voltage 1
∆G
22(4)
V
26(1)
C/N detection voltage 2
V
26(2)
Video system total check
V
25
Bit-stream output voltage Int.
V
9A1
Bit-stream output voltage Ext.
Bit-stream detection voltage 1
Bit-stream detection voltage 2
AFC control 1
AFC control 2
AFC control 3
∆V
9B1
V
14(1)
V
14(2)
V
11(1)
V
11(2)
V
11(3)
V
27
∆V
31
∆V
27B
QPSK phase detection output 1
Ma
int
en
QPSK phase detection output 2
QPSK B.P.F./L.P.F.
frequency characteristic 1
QPSK B.P.F./L.P.F.
frequency characteristic 2
QPSK B.P.F./L.P.F.
frequency characteristic 3
∆V
27C
∆V
27D
d
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co L a d t ty
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.
V
IN20
=
0.02 V[p-p], 4.5 MHz
Difference from G
22(2)
−6.5
−4.5
0.5
−2.5
1.8
dB
V
When V
IN48
=
63.4 mV and 8.9 MHz,
adjust V
8
so as to get V
26
=
2.5
±
0.05 V and
measure at V
IN48
=
0.2 mV[p-p] and 8.9 MHz
When V
IN48
=
63.4 mV and 8.9 MHz,
adjust V
8
so as to get V
26
=
2.5
±
0.05 V and
measure at V
IN48
=
31.8 mV[p-p] and 8.9 MHz
3.7
4.3
V
Input signal (pin 48) is BS signal of
white 100% and input amp. gain is 6 dB
V
IN45
=
0.5 V[p-p], 2 MHz square-wave
V
IN6
=
0.5 V[p-p], 2 MHz square-wave
V
IN6
=
0.1 V[p-p], 2 MHz square-wave
V
IN6
=
0.3 V[p-p], 2 MHz square-wave
V
IN6
=
0.5 V[p-p], 2 MHz square-wave
V
IN6
=
0.5 V[p-p], 2 MHz square-wave
V
IN6
=
no input
1.8
2
2.2
0.84
4
4
1
1.16
0.84
1
1.16
1
1
0.1
4.9
V
V
0.1
4.9
V
V
4
4.9
V
V
IN48
=
0.4 V[p-p], 5.7273MHz
+
0.05MHz 0.45
0.6
0
0.75
0.8
V
IN48
=
0.4 V[p-p], 5.7273MHz
+
0.05MHz
−
0.8
Difference between measured V
31
and V
27
Difference between V
27
at V
IN48
=
0.4 V[p-p],
−3.7
6.2273 MHz, f
27
=
0.5 MHz and that at
f
IN48
=
5.7773 MHz
Difference between V
27
at V
IN48
=
0.4 V[p-p],
6.7273 MHz, f
27
=
0.5 MHz and that at
f
IN48
=
5.7773 MHz
dB
−2
− 0.2
dB
−18
−10
dB
Difference between V
27
at V
IN48
=
0.4 V[p-p],
5.2273 MHz, f
27
=
0.5 MHz and that at
f
IN48
=
5.7773 MHz
−6
−4
−1.8
dB
M
ain
Di
sc te
on na
tin nc
ue e/
d
Video amp. gain 2
∆G
22(2)
−
0.6
V[p-p]
V[p-p]
V[p-p]
ce
/D
isc
on
tin
ue
V[p-p]
an
5
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