DATA SHEET
Product specification
Supersedes data of 1999 Jan 18
File under Integrated Circuits, IC02
1999 Jun 04
INTEGRATED CIRCUITS
TDA9808
Single standard VIF-PLL with
QSS-IF and FM-PLL demodulator
1999 Jun 04
2
Philips Semiconductors
Product specification
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
TDA9808
FEATURES
5 V supply voltage (9 V supply voltage for TDA9808
(DIP20) only)
Applicable for IFs (Intermediate Frequencies) of
38.9 MHz, 45.75 MHz and 58.75 MHz
Gain controlled wide band Video IF (VIF)-amplifier
(AC-coupled)
True synchronous demodulation with active carrier
regeneration (very linear demodulation, good
intermodulation figures, reduced harmonics, excellent
pulse response)
Robustness for over-modulation better than 105% due
to Phase Locked Loop (PLL)-bandwidth control at
negative modulated standards
VIF Automatic Gain Control (AGC) detector for gain
control, operating as peak sync detector
Tuner AGC with adjustable TakeOver Point (TOP)
Automatic Frequency Control (AFC) detector without
extra reference circuit
AC-coupled limiter amplifier for sound intercarrier signal
Alignment-free FM-PLL demodulator with high linearity
Sound IF (SIF) input for single reference Quasi Split
Sound (QSS) mode (PLL controlled); SIF AGC detector
for gain controlled SIF amplifier; single reference QSS
mixer for high performance
Electrostatic Discharge (ESD) protection for all pins.
GENERAL DESCRIPTION
The TDA9808 is an integrated circuit for single standard
(negative modulated) vision IF signal processing and FM
demodulation, with single reference QSS-IF in TV and
VTR sets.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA9808
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
TDA9808T
SO20
plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1999 Jun 04
3
Philips Semiconductors
Product specification
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
TDA9808
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage
V
P
= 9 V for TDA9808 (DIP20)
only
4.5
5
9.9
V
I
P
supply current
71
83
95
mA
V
i(VIF)(rms)
VIF input signal voltage sensitivity
(RMS value)
-
1 dB video at output
-
60
100
V
V
o(video)(p-p)
video output signal voltage
(peak-to-peak value)
1.2
1.35
1.5
V
B
-
3
-
3 dB video bandwidth on pin 9
C
L
< 30 pF; R
L
> 1.5 k
; AC load
7
8
-
MHz
S/N
W(video)
weighted signal-to-noise ratio for
video
56
60
-
dB
IM(0.92)
intermodulation attenuation at `blue'
f = 0.92 MHz
58
64
-
dB
IM(2.76)
intermodulation attenuation at `blue'
f = 2.76 MHz
58
64
-
dB
H(sup)
suppression of harmonics in video
signal
35
40
-
dB
V
i(SIF)(rms)
sound IF input signal voltage
sensitivity (RMS value)
-
3 dB at intercarrier output
-
50
100
V
V
o(rms)
audio output signal voltage for FM
(RMS value)
M, N standard;
25 kHz modulation
0.4
0.5
0.6
V
THD
total harmonic distortion
25 kHz modulation
-
0.15
1.0
%
S/N
W(audio)
weighted signal-to-noise ratio
25 kHz modulation;
= 75
s
55
60
-
dB
1999
Jun
04
4
Philips Semiconductors
Product specification
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
TDA9808
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BLOCK DIAGRAM
handbook, full pagewidth
MHA736
VCO
TWD
SINGLE
REFERENCE
QSS MIXER
FPLL
VIF
AMPLIFIER
TUNER
AGC
VIF
AGC
VIF
SAW
SOUND
TRAP
VIDEO
DEMODULATOR
AND AMPLIFIER
AFC
DETECTOR
VOLTAGE
REFERENCE
GND
VP
AFC
n.c.
2 x fpc
TPLL
CVAGC
TADJ
TAGC
NOISE
CLIPPING
1
12
2
SIF
AMPLIFIER
SIF
SAW
SIF
AGC
CSAGC
19
20
5
CDEC
mute
switch
4.5 MHz
Vi FM
7
11
Vo QSS
10
9
6
13
18
8
15
14
4
17
3
16
Vo(vid)
Vo AF
1.35 V (p-p)
FM-PLL
DEMODULATOR
TDA9808
Fig.1 Block diagram.
1999 Jun 04
5
Philips Semiconductors
Product specification
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
TDA9808
PINNING
SYMBOL
PIN
DESCRIPTION
V
i VIF1
1
VIF differential input signal voltage 1
V
i VIF2
2
VIF differential input signal voltage 2
TADJ
3
tuner AGC takeover point adjust
T
PLL
4
PLL loop filter
C
SAGC
5
SIF AGC capacitor
V
o AF
6
audio output
C
DEC
7
decoupling capacitor
n.c.
8
not connected
V
o(vid)
9
composite video output voltage
V
o QSS
10
single reference QSS output voltage
V
i FM
11
sound intercarrier input voltage
TAGC
12
tuner AGC output
AFC
13
AFC output
VCO1
14
VCO1 resonance circuit
VCO2
15
VCO2 resonance circuit
GND
16
ground
C
VAGC
17
VIF AGC capacitor
V
P
18
supply voltage
V
i SIF1
19
SIF differential input signal voltage 1
V
i SIF2
20
SIF differential input signal voltage 2
SYMBOL
PIN
DESCRIPTION
Fig.2 Pin configuration DIP20.
handbook, halfpage
MHA734
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TDA9808
Vi VIF1
Vi VIF2
TPLL
CSAGC
Vo AF
Vo(vid)
Vo QSS
CDEC
n.c.
TADJ
Vi SIF2
Vi SIF1
Vi FM
VP
CVAGC
GND
VCO2
VCO1
AFC
TAGC
Fig.3 Pin configuration SO20.
handbook, halfpage
MHA735
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TDA9808T
Vi VIF1
Vi VIF2
TPLL
CSAGC
Vo AF
Vo(vid)
Vo QSS
CDEC
n.c.
TADJ
Vi SIF2
Vi SIF1
Vi FM
VP
CVAGC
GND
VCO2
VCO1
AFC
TAGC
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