Single/multistandard VIF/SIF-PLL
and FM-PLL/AM demodulators
Preliminary specification
File under Integrated Circuits, IC02
1997 May 12
Page 2
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
FEATURES
• 5 V supply voltage
• 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 gated phase detector at L/L accent standard and
PLL-bandwidth control at negative modulated standards
• VCO (Voltage Controlled Oscillator) frequency
switchable between L and L accent (alignment external)
picture carrier frequency
• VIF AGC (Automatic Gain Control) detector for gain
control, operating as peak sync detector for B/G, peak
white detector for L; signal controlled reaction time for L
• Tuner AGC with adjustable TakeOver Point (TOP)
• AFC (Automatic Frequency Control) detector without
extra reference circuit
TDA9817; TDA9818
• AC-coupled limiter amplifier for sound intercarrier signal
• Alignment-free FM PLL (Phase Locked Loop)
demodulator with high linearity
• SIF (Sound IF) input for single reference QSS (Quasi
Split Sound) mode (PLL controlled); SIF AGC detector
for gain controlled SIF amplifier; single reference QSS
mixer able to operate in high performance single
reference QSS mode and in intercarrier mode
• AM demodulator without extra reference circuit
• Stabilizer circuit for ripple rejection and to achieve
constant output signals
• ESD (Electrostatic Discharge) protection for all pins.
GENERAL DESCRIPTION
The TDA9817 is an integrated circuit for single standard
vision IF signal processing and FM demodulation.
The TDA9818 is an integrated circuit for multistandard
vision IF signal processing, sound AM and FM
demodulation.
supply voltage4.555.5V
supply current7690104mA
vision IF input signal voltage
−1 dB video at output−60100µV
sensitivity (RMS value)
video output signal voltage
0.971.11.23V
(peak-to-peak value)
−3 dB video bandwidth on pin 16B/G and L standard;
< 20 pF; RL>1kΩ; AC load
C
L
weighted signal-to-noise ratio for
78−MHz
5660−dB
video
intermodulation attenuation at ‘blue’f = 1.1 MHz5864−dB
intermodulation attenuation at ‘blue’f = 3.3 MHz5864−dB
suppression of harmonics in video
3540−dB
signal
sound IF input signal voltage
−3 dB at intercarrier output−50100µV
sensitivity (RMS value)
audio output signal voltage for FM
(RMS value)
B/G standard;
27 kHz modulation (54%)
M, N standard;
0.40.50.6V
0.360.450.54V
25 kHz modulation
audio output signal voltage for AM
L standard; 54% modulation0.40.50.6V
(RMS value)
total harmonic distortion audio signal54% modulation
FM−0.20.5%
AM−0.51.0%
weighted signal-to-noise ratio audio
54% modulation
signal
FM5560−dB
AM4753−dB
1997 May 123
Page 4
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
BLOCK DIAGRAM
video
SOUND
video
16
2021171819
GND
P
V
AFC
VOLTAGE
REFERENCE
AFC
VIDEO
DETECTOR
(p-p)
audio
1 V
TRAP
(p-p)
1.1 V
8
AND AMPLIFIER
DEMODULATOR
1011
9
FM-PLL
DEMODULATOR
13
TDA9817; TDA9818
MHA663
DEC
C
de-em
C
mute
switch
pc
2 × f
and adjust
L/L accent switch
PLL
T
VAGC
C
BL
C
TOP
(1)
615
422
(1)
7
VIF
AGC
AGC
TUNER
14
tuner AGC
VCO
TWD
QSS MIXER
AM DEMODULATOR
INTERCARRIER MIXER
TDA9817
TDA9818
MODE SWITCH
INTERCARRIER
VIF AMPLIFIERFPLL
2
1
VIF
SAW
SIF AMPLIFIER
24
23
SIF
SAW
SIF
mode
intercarrier
AGC
5.5 MHz
12
handbook, full pagewidth
Fig.1 Block diagram.
(1)
3
switch
selection
standards
5
SAGC
C
(1) Not connected for TDA9817.
1997 May 124
Page 5
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
PINNING
SYMBOLPINDESCRIPTION
V
i VIF1
V
i VIF2
(1)
STD
C
VAGC
C
SAGC
T
PLL
(1)
LADJ
V
oAF
V
de-em
C
de-em
C
DEC
V
o QSS
V
iFM
TAGC14tuner AGC output
(1)
C
BL
V
o(vid)
AFC17AFC output
VCO118VCO1 resonance circuit
VCO219VCO2 resonance circuit
GND20ground
V
P
TADJ22tuner AGC takeover point adjust
V
i SIF1
V
i SIF2
1VIF differential input signal voltage 1
2VIF differential input signal voltage 2
3standard switch
4VIF AGC capacitor
5SIF AGC capacitor
6PLL loop filter
7L/L accent switch and adjust
8audio output
15black level detector
16composite video output voltage
21supply voltage
23SIF differential input signal voltage 1
24SIF differential input signal voltage 2
handbook, halfpage
(1) Not connected for TDA9817.
V
V
C
C
LADJ
V
C
V
i VIF1
i VIF2
STD
VAGC
SAGC
T
PLL
V
o AF
de-em
de-em
C
DEC
o QSS
1
2
(1)
3
4
5
6
(1)
7
8
9
10
11
12
Fig.2 Pin configuration.
TDA9817; TDA9818
V
24
i SIF2
V
23
i SIF1
TADJ
22
V
21
P
GND
20
VCO2
MHA664
19
VCO1
18
AFC
17
V
16
o(vid)
(1)
C
15
BL
TAGC
14
13
V
i FM
TDA9818
TDA9817
Note
1. Not connected for TDA9817.
1997 May 125
Page 6
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
FUNCTIONAL DESCRIPTION
The integrated circuit comprises the functional blocks as
shown in Fig.1:
• Vision IF amplifier and VIF AGC detector
• Tuner AGC
• Frequency Phase Locked Loop detector (FPLL)
• VCO, Travelling Wave Divider (TWD) and AFC
• Video demodulator and amplifier
• SIF amplifier and SIF AGC
• Single reference QSS mixer
• AM demodulator
• FM-PLL demodulator
• AF (Audio Frequency) signal processing
• Internal voltage stabilizer.
Vision IF amplifier and VIF AGC detector
The vision IF amplifier consists of three AC-coupled
differential amplifier stages. Each differential stage
comprises a feedback network controlled by emitter
degeneration.
The AGC detector generates the required VIF gain control
voltage for constant video output by charging/discharging
the AGC capacitor. Therefore for negative video
modulation the sync level and for positive video
modulation the peak white level of the video signal is
detected. In order to reduce the reaction time for positive
modulation, where a very large time constant is needed,
an additional level detector increases the discharging
current of the AGC capacitor (fast mode) in the event of a
decreasing VIF amplitude step. The additional level
information is given by the black-level detector voltage.
Tuner AGC
The AGC capacitor voltage is converted to an internal IF
control signal, and is fed to the tuner AGC to generate the
tuner AGC output current at pin TAGC (open-collector
output). The tuner AGC takeover point can be adjusted at
pin TADJ. This allows to match the tuner to the SAW filter
in order to achieve the optimum IF input level.
Frequency Phase Locked Loop detector (FPLL)
The VIF-amplifier output signal is fed into a frequency
detector and into a phase detector via a limiting amplifier.
During acquisition the frequency detector produces a DC
current proportional to the frequency difference between
the input and the VCO signal. After frequency lock-in the
phase detector produces a DC current proportional to the
TDA9817; TDA9818
phase difference between the VCO and the input signal.
The DC current of either frequency detector or phase
detector is converted into a DC voltage via the loop filter,
which controls the VCO frequency. In the event of positive
modulated signals the phase detector is gated by
composite sync in order to avoid signal distortion for
overmodulated VIF signals.
VCO, Travelling Wave Divider (TWD) and AFC
The VCO operates with a resonance circuit (with L and C
in parallel) at double the PC frequency. The VCO is
controlled by two integrated variable capacitors.
The control voltage required to tune the VCO from its
free-running frequency to actually double the PC
frequency is generated by the frequency-phase detector
(FPLL) and fed via the loop filter to the first variable
capacitor. This control voltage is amplified and additionally
converted into a current which represents the AFC output
signal. At centre frequency the AFC output current is equal
to zero.
For TDA9818: the VCO centre frequency can be
decreased (required for L accent standard) by activating
an additional internal capacitor. This is achieved by using
the L accent switch. In this event the second variable
capacitor can be controlled by a variable resistor at the L
accent switch for setting the VCO centre frequency to the
required L accent value.
The oscillator signal is divided by 2 with a TWD which
generates two differential output signals with a 90 degree
phase difference independent of the frequency.
Video demodulator and amplifier
The video demodulator is realized by a multiplier which is
designed for low distortion and large bandwidth. The vision
IF input signal is multiplied with the ‘in phase’ signal of the
travelling wave divider output. In the demodulator stage
the video signal polarity can be switched in accordance
with the TV standard.
The demodulator output signal is fed via an integrated
low-pass filter for attenuation of the carrier harmonics to
the video amplifier. The video amplifier is realized by an
operational amplifier with internal feedback and high
bandwidth. A low-pass filter is integrated to achieve an
attenuation of the carrier harmonics for B/G and
L standard. The standard dependent level shift in this
stage delivers the same sync level for positive and
negative modulation. The video output signal at V
1.1 V (p-p) for nominal vision IF modulation, in order to
achieve 1 V (p-p) at sound trap output.
o(vid)
is
1997 May 126
Page 7
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
SIF amplifier and SIF AGC
The sound IF amplifier consists of two AC-coupled
differential amplifier stages. Each differential stage
comprises a controlled feedback network provided by
emitter degeneration.
The SIF AGC detector is related to the SIF input signal
(average level of AM or FM carrier) and controls the SIF
amplifier to provide a constant SIF signal to the
AM demodulator and single reference QSS mixer.
At L standard (AM sound) the SIF AGC reaction time is set
to ‘slow’ for nominal video conditions. But with a
decreasing VIF amplitude step the SIF AGC is set to ‘fast’
mode controlled by the VIF AGC detector. In FM mode this
reaction time is always ‘fast’.
Single reference QSS mixer
The single reference QSS mixer is realized by a multiplier.
The SIF amplifier output signal is fed to the single
reference QSS mixer and converted to intercarrier
frequency by the regenerated picture carrier (VCO).
The mixer output signal is fed via a high-pass for
attenuation of the video signal components to the output
pin 12. With this system a high performance hi-fi stereo
sound processing can be achieved.
For a simplified application without a sound IF SAW filter
the single reference QSS mixer can be switched to the
intercarrier mode by connecting pin 24 to ground. In this
mode the sound IF passes the vision IF SAW filter and the
composite IF signal is fed to the single reference QSS
mixer. This IF signal is multiplied with the 90 degree TWD
output signal for converting the sound IF to intercarrier
frequency. This composite intercarrier signal is fed to the
output pin 12, too. By using this quadrature detection, the
low frequency video signals are removed.
AM demodulator
The AM demodulator is realized by a multiplier.
The modulated SIF amplifier output signal is multiplied in
phase with the limited (AM is removed) SIF amplifier
output signal. The demodulator output signal is fed via an
integrated low-pass filter for attenuation of the carrier
harmonics to the AF amplifier.
TDA9817; TDA9818
consists of 7 stages which are internally AC-coupled in
order to minimize the DC offset.
Furthermore the AF output signal can be muted by
connecting a resistor between the limiter input pin 13 and
ground.
The FM-PLL consists of an integrated relaxation oscillator,
an integrated loop filter and a phase detector.
The oscillator is locked to the FM intercarrier signal, output
from the limiter. As a result of locking, the oscillator
frequency tracks with the modulation of the input signal
and the oscillator control voltage is superimposed by the
AF voltage. The FM-PLL operates as an FM demodulator.
AF signal processing
The AF amplifier consists of two parts:
1. The AF pre-amplifier for FM sound is an operational
amplifier with internal feedback, high gain and high
common mode rejection. The AF voltage from the
PLL demodulator, by principle a small output signal, is
amplified by approximately 33 dB. The low-pass
characteristic of the amplifier reduces the harmonics of
the intercarrier signal at the sound output terminal
pin 9 at which the de-emphasis network for FM sound
is applied. An additional DC control circuit is
implemented to keep the DC level constant,
independent of process spread.
2. The AF output amplifier (10 dB) provides the required
output level by a rail-to-rail output stage. This amplifier
makes use of an input selector for switching to AM, FM
de-emphasis or mute state, controlled by the standard
switching voltage and the mute switching voltage.
Internal voltage stabilizer
The bandgap circuit internally generates a voltage of
approximately 1.25 V, independent of supply voltage and
temperature. A voltage regulator circuit, connected to this
voltage, produces a constant voltage of 3.6 V which is
used as an internal reference voltage.
FM-PLL demodulator
The FM-PLL demodulator consists of a limiter and an
FM-PLL. The limiter provides the amplification and
limitation of the FM sound intercarrier signal. The result is
high sensitivity and AM suppression. The amplifier
1997 May 127
Page 8
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
P
V
i
t
sc(max)
V
TAGC
T
stg
T
amb
V
es
Notes
1. I
P
2. Machine model class B.
supply voltagemaximum chip temperature
−5.5V
of 110 °C; note 1
voltage at pins 1 to 6, 9 to 11, 13to15, 17
0V
and 21 to 24
maximum short-circuit time to ground or V
P
−10s
tuner automatic gain control output voltage013.2V
storage temperature−25+150°C
operating ambient temperature−20+70°C
electrostatic handling voltagenote 2−300+300V
= 104 mA; T
=70°C; R
amb
th j-a
= 65 K/W.
P
V
THERMAL CHARACTERISTICS
SYMBOLPARAMETERCONDITIONSVALUEUNIT
R
th j-a
thermal resistance from junction to ambient in free air65K/W
1997 May 128
Page 9
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
CHARACTERISTICS
V
=5V; T
P
peak white level for L); IF input from 50 Ω via broadband transformer 1 : 1; video modulation DSB; residual carrier
B/G: 10%; L = 3%; video signal in accordance with
Fig.13; unless otherwise specified.
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supply (pin 21)
V
P
I
P
Vision IF amplifier (pins 1 and 2)
V
i(VIF)(rms)
V
i(max)(rms)
∆V
o(int)
G
IF(cr)
R
i(diff)
C
i(diff)
V
I(1,2)
True synchronous video demodulator; note 3
f
VCO(max)
∆f
/∆Toscillator drift as a function
osc
∆f
/∆V
osc
V
VCO(rms)
f
cr(pc)
∆f
pc(fr)
f
alg(L accent)
t
acq
=25°C; see Table 1 for input frequencies and level; input level V
capacitance
DC input voltage−3.4−V
crosstalk attenuation
between SIF and VIF input
FM mode; −3 dB at
−50100µV
intercarrier output
pin 12
AM mode; −3 dB at
−50100µV
AF output pin 8
FM mode; +1 dB at
65100−mV
intercarrier output
pin 12
AM mode; +1 dB at
65100−mV
AF output pin 8
6066−dB
see Fig.4
note 21.21.72.5pF
between pins 1 and 2
50−−dB
and pins 23 and 24;
note 14
SIF AGC detector (pin 5)
I
ch(5)
charging currentFM mode81216µA
AM mode0.81.21.6µA
I
dch(5)
discharging currentFM mode81216µA
normal mode AM11.41.8µA
fast mode AM6085110µA
Single reference QSS intercarrier mixer (B/G standard; pin 12)
V
o(rms)
IF intercarrier level
(RMS value)
QSS mode; SC1;
sound carrier 2 off
L standard; without
modulation
intercarrier mode; SC1;
sound carrier 2 off
V
o(peak)
IF intercarrier level
(peak value)
QSS mode141198225mV
L standard;
80% AM modulation
B
−3
−3 dB intercarrier
upper limit7.59−MHz
bandwidth
α
SC(rms)
residual sound carrier
(RMS value)
QSS mode;
fundamental wave and
harmonics
intercarrier mode;
fundamental wave and
harmonics
100140180mV
100140180mV
−note 15−mV
255356458mV
−25mV
−25mV
1997 May 1213
Page 14
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
α
C(rms)
α
H(sup)
R
o(12)
V
O(12)
I
int(12)
I
sink(max)(12)
I
source(max)(12)
Limiter amplifier (pin 13); note 16
V
i(FM)(rms)
V
i(FM)(rms)
residual vision carrier
(RMS value)
QSS mode;
fundamental wave and
−25mV
harmonics
intercarrier mode;
−520mV
fundamental wave and
harmonics
suppression of video
signal harmonics
intercarrier mode;
f
≤ 5 MHz
video
39−−dB
output resistancenote 2−−25Ω
DC output voltage−2.0−V
DC internal bias current for
1.92.5−mA
emitter-follower
maximum AC and DC
1.41.9−mA
output sink current
maximum AC and DC
3.03.5−mA
output source current
input signal voltage for
−−100µV
lock-in (RMS value)
input signal voltage
(RMS value)
SN+
-------------N
weighted
−250400µV
40 dB=
allowed input signal voltage
(RMS value)
α
R
V
AM
i(13)
I(13)
AM suppression50 µs de-emphasis;
input resistancenote 2480600720Ω
DC input voltage−2.8−V
FM-PLL demodulator
f
f
t
cr
hr
acq
catching range of PLLupper limit7.0−−MHz
holding range of PLLupper limit9.0−−MHz
acquisition time−−4µs
200−−mV
4650−dB
AM: f = 1 kHz; m = 0.3
refer to 27 kHz
(54% FM deviation)
lower limit−−4.0MHz
lower limit−−3.5MHz
1997 May 1214
Page 15
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
FM operation (B/G standard; pin 8); notes 16 and 16a
V
o(AF)(rms)
AF output signal voltage
(RMS value)
V
o(AF)(cl)
AF output clipping signal
voltage level
∆f
AF
∆V
/∆Ttemperature drift of AF
o
frequency deviationTHD < 1.5%; note 17−−±53kHz
output signal voltage
V
9
DC voltage at decoupling
capacitor
R
8
V
8
I
sink(max)(8)
output resistancenote 2−−100Ω
DC output voltage−2.3−V
maximum AC and DC
output sink current
I
source(max)(8)
maximum AC and DC
output source current
B
−3
−3 dB audio frequency
bandwidth
THDtotal harmonic distortion27 kHz (54% FM
S/N
W
weighted signal-to-noise
ratio
α
SC(rms)
residual sound carrier
(RMS value)
α
8
mute attenuation of AF
signal
∆V
8
DC jump voltage of AF
output terminal for
switching AF output to
mute state and vice versa
PSRRpower supply ripple
rejection at pin 8
27 kHz
(54% FM deviation);
see Fig.13 and note 17
= 470 Ω200250300mV
R
x
R
=0Ω400500600mV
x
25 kHz
360450540mV
(50% FM deviation);
R
=0Ω; see Fig.13
x
and note 17
THD < 1.5%1.0−1.2V
voltage dependent on
−3 × 10
−3
1.2−3.0V
7 × 10
−3
VCO frequency;
note 18
−−0.5mA
−−0.5mA
without de-emphasis
100125−kHz
capacitor
−0.20.5%
deviation)
FM-PLL only; with
5560−dB
50 µs de-emphasis;
27 kHz (54% FM
deviation);
“CCIR 468-4”
fundamental wave and
−−75mV
harmonics
B/G and L standard7075−dB
FM-PLL in lock mode−±50±150mV
R
=0Ω; f = 70 Hz;
x
2026−dB
see Figs 11 and 13
dB/K
1997 May 1215
Page 16
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Single reference QSS AF performance for FM operation (B/G standard); notes 19, 20 and 21; see Table 1
S/N
W
weighted signal-to-noise
ratio
Intercarrier AF performance for FM operation (standard B/G) notes 19, 20 and 22; see Table 1
S/N
W
weighted signal-to-noise
ratio
PC/SC1 ratio at pins 1
40−−dB
and 2; 27 kHz
(54% FM deviation);
“CCIR 468-4”
black picture5358−dB
white picture5055−dB
6 kHz sine wave
4248−dB
(black-to-white
modulation)
sound carrier
4551−dB
subharmonics;
f = 2.75 MHz ±3 kHz
PC/SC1 ratio at pins 1
27−−dB
and 2; 27 kHz
(54% FM deviation);
“CCIR 468-4”
black picture4751−dB
white picture4751−dB
6 kHz sine wave
4046−dB
(black-to-white
modulation)
sound carrier
3539−dB
subharmonics;
f = 2.75 MHz ±3 kHz
AM operation (L standard; pin 8); note 23
V
o(AF)(rms)
AF output signal voltage
54% modulation400500600mV
(RMS value)
THDtotal harmonic distortion54% modulation−0.51.0%
B
−3
S/N
W
−3 dB AF bandwidth100125−kHz
weighted signal-to-noise
“CCIR 468-4”
4753−dB
ratio
V
8
PSRRpower supply ripple
DC potential voltage−2.3−V
see Fig.112026−dB
rejection at pin 8
Switching level for standard switch (pin 3)
V
logic
DC potential for logic 1 or
B/G standard2.8−V
P
pin not connected
DC potential for logic 0L/L accent standard0−0.8V
I
IL
LOW level input currentV = 0 V190250310µA
1997 May 1216
V
Page 17
Philips SemiconductorsPreliminary specification
α
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
Notes to the characteristics
1. Values of video and sound parameters are decreased at VP= 4.5 V.
2. This parameter is not tested during production and is only given as an application information for designing the
television receiver.
3. Loop bandwidth BL = 70 kHz (natural frequency fn= 12 kHz; damping factor d ≈ 3; calculated with sync level within
gain control range). Resonance circuit of VCO: Q0> 50; C
approximately 2.7 V).
4. Temperature coefficient of external LC-circuit is equal to zero.
5. V
i(IF)(rms)
= 10 mV; ∆f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture
video modulation.
6. V
signal for nominal video signal.
iIF
7. The leakage current of the AGC capacitor should not exceed 1 µA at B/G standard respectively 10 nA current at
L standard. Larger currents will increase the tilt.
8. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 16). B = 5 MHz weighted
in accordance with
“CCIR 567”
.
9. The intermodulation figures are defined:
at 4.4 MHz
V
0
α
1.1
20
3.3
20
-------------------------------------V
at 1.1 MHz
0
at 4.4 MHz
V
0
log=
-------------------------------------V
at 3.3 MHz
0
; α
; α
3.6 dB+log=
value at 3.3 MHz referenced to colour carrier.
3.3
value at 1.1 MHz referenced to black/white signal;
1.1
10. Measurements taken with SAW filter K3953 (sound carrier suppression: 40 dB); loop bandwidth BL = 70 kHz:
a) Modulation VSB; sound carrier off; f
b) Sound carrier on; SIF SAW filter K9453; f
video
> 0.5 MHz.
= 10 kHz to 10 MHz.
video
11. Response speed valid for a VIF input level range of 200 µVupto70mV.
12. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.7. The AFC-steepness can be changed by the resistors at pin 17.
13. Depending on the ratio ∆C/C0 of the LC resonant circuit of VCO (Q0> 50; see note 3; C0=C
14. Source impedance: 2.3 kΩ in parallel to 12 pF (SAW filter); fIF= 38.9 MHz.
15. Without using an SIF SAW filter the mixer can be switched to intercarrier mode by connecting pin 23 and/or pin 24
to ground. In this mode the SIF passes the VIF SAW filter and IF intercarrier levels are depending on the sound shelf
of the VIF SAW filter. The intercarrier output signal at pin 12 can be calculated by the following formula taking into
account the video output signal at pin 16 (V
= sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB,
dB()
6 dB = correction term of internal circuitry
and ±3 dB = tolerance of video output and intercarrier output amplitude V
Example: SAW filter G1962 (sound shelf: 20 dB) ⇒⇒ V
V
-------------V
= 8.2 pF ±0.25 pF; C
ext
int
= 1.1 V typical) as a reference:
.
o(rms)
i(SC)
i(PC)
27 dB–=
= 32 mV typical.
o(rms)
≈ 8.5 pF (loop voltage
int+Cext
).
1997 May 1217
Page 18
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
TDA9817; TDA9818
FM-PLL/AM demodulators
16. Input level for second IF from an external generator with 50 Ω source impedance. AC-coupled with 10 nF capacitor,
f
= 1 kHz, 27 kHz (54% FM deviation) of audio references. A VIF/SIF input signal is not permitted. Pins 5 and 4
mod
have to be connected to positive supply voltage for minimum IF gain. S/N and THD measurements are taken at
50 µs de-emphasis at pin 9 (modulator pre-emphasis has to be activated). The FM demodulator steepness
∆V
/∆fAF is positive.
o(AF)
a) Second IF input level 10 mV (RMS).
17. Measured with an FM deviation of 27 kHz the typical AF output signal is 500 mV (RMS) (Rx=0Ω). By using
Rx= 470 Ω the AF output signal is attenuated by 6 dB (250 mV RMS). For handling a frequency deviation of more
than 53 kHz the AF output signal has to be reduced by using Rx in order to avoid clipping (THD < 1.5%). For an
FM deviation up to 100 kHz an attenuation of 6 dB is recommended with Rx= 470 Ω.
18. The leakage current of the decoupling capacitor (2.2 µF) should not exceed 1 µA.
19. For all S/N measurements the used vision IF modulator has to meet the following specifications:
a) Incidental phase modulation for black-to-white jump less than 0.5 degrees.
b) QSS AF performance, measured with the television demodulator AMF2 (audio output, weighted S/N ratio) better
than 60 dB (deviation 27 kHz) for 6 kHz sine wave black-to-white video modulation.
c) Picture-to-sound carrier ratio; PC/SC1= 13 dB (transmitter).
20. The PC/SC1 ratio is calculated as the addition of TV transmitter PC/SC1 ratio and SAW filter PC/SC1 ratio. This
PC/SC1 ratio is necessary to achieve the S/NW values as noted. A different PC/SC1 ratio will change these values.
21. Measurements taken with SAW filter K3953 for vision IF (suppressed sound carrier) and K9453 for sound IF
(suppressed picture carrier). Input level V
i(SIF)(rms)
22. Measurements taken with SAW filter G1962 (sound shelf: 20 dB) for vision and sound IF. Pin 23 and/or pin 24 has
to be connected to ground for switching the single reference QSS mixer to intercarrier mode.
23. Measurements taken with SAW filter K9453 (Siemens) for AM sound IF (suppressed picture carrier).
= 10 mV, 27 kHz (54% FM deviation).
Table 1 Input frequencies and carrier ratios
DESCRIPTIONSYMBOLB/G STANDARDM, N STANDARDL STANDARD
Picture/IF carrierf
Sound carrierf
pc
or f
SC1
f
SC2
Picture-to-sound carrierSC
SC
IF
1
2
38.945.75/58.7538.933.9MHz
33.441.25/54.2532.440.4MHz
33.158−−−MHz
1371010dB
20−−−dB
L ACCENT
STANDARD
UNIT
1997 May 1218
Page 19
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
handbook, full pagewidth
V
i(VIF)(rms)
(mV)
0.6
70
gain
(dB)
600.06
50
40
30
206
10
060
−10
1.02.521.533.54
TDA9817; TDA9818
(1)(2)(3)(4)
V4 (V)
MHA665
4.5
0
1.0
2.0
I
tuner
(mA)
(1) I
; R
100
(mV)
10
0.1
TOP
1
=22kΩ.
(dBµV)
tuner
(2) Gain.
handbook, full pagewidth
V
i(SIF)(rms)
110
100
(3) I
; R
; R
TOP
TOP
=11kΩ.
=0Ω.
(4) I
tuner
tuner
Fig.3 Typical VIF and tuner AGC characteristic.
MHA666
90
80
70
60
50
40
30
0.01
20
1.02.521.533.54
Fig.4 Typical SIF AGC characteristic (FM and AM mode).
1997 May 1219
V5 (V)
4.5
Page 20
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
70
handbook, halfpage
S/N
(dB)
60
50
40
30
20
10
0
60402020
TDA9817; TDA9818
MED684
0
V
600.060.66
V
10
i(IF)(rms)
i(IF)(rms)
(dB)
600
(mV)
Fig.5 Typical signal-to-noise ratio as a function of IF input voltage.
handbook, halfpage
13.2 dB
27 dB
SC CCPCSC CCPC
SC = sound carrier, with respect to sync level.
CC = chrominance carrier, with respect to sync level.
PC = picture carrier, with respect to sync level.
The sound carrier levels are taking into account a sound shelf attenuation of 20 dB (SAW filter G1962).
3.2 dB
13.2 dB
27 dB
BLUEYELLOW
10 dB
MED685 - 1
Fig.6 Input signal conditions.
1997 May 1220
Page 21
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
handbook, full pagewidth
P
TDA9817
TDA9818
17
VP = 5 VV
I
17
22 kΩV
22 kΩ
100
nF
AFC
V
AFC
(V)
2.5
I
17
(µA)
−200
−100
0
100
200
38.538.939.3
TDA9817; TDA9818
MHA667
(source current)
(sink current)
f (MHz)
handbook, full pagewidth
Fig.7 Measurement conditions and typical AFC characteristic.
2.6 V
1.83 V
1.5 V
standard B/G and M, N
2.6 V
2.0 V
1.83 V
1.66 V
1.5 V
standard L
white level
black level
sync level
white level
threshold level
black level
threshold level
sync level
MHA668
Fig.8 Typical video signal levels on output pin 16 (sound carrier off).
1997 May 1221
Page 22
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
10
(1) Signal.
(2) AM rejection.
(3) Noise.
handbook, halfpage
(dB)
−10
−30
−50
−70
30
(1)
(2)
(3)
50
MHA669
70110
90
input voltage (dBµV)
TDA9817; TDA9818
(1) Signal.
(2) THD.
(3) Noise.
Fig.9 Typical audio level, noise and AM rejection (54% FM deviation) for FM.
10
handbook, halfpage
(dB)
−10
−30
−50
−70
30
(1)
(2)
(3)
50
70110
input voltage (dBµV)
MHA670
1.6
THD
(%)
1.2
0.8
0.4
90
0
Fig.10 Typical audio level, noise and THD (54% AM modulation) for AM.
1997 May 1222
Page 23
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
handbook, full pagewidth
VP = 5 V
VP = 5 V
TDA9817
TDA9818
MHA671
TDA9817; TDA9818
100 mV
(f
= 70 Hz)
ripple
t
Fig.11 Ripple rejection condition.
1997 May 1223
Page 24
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
(dBµV)
140
120
100
(1)
80
tuning gain
control range
handbook, full pagewidth
antenna input
SAW insertion
loss 14 dB
IF slip
6 dB
TDA9817; TDA9818
10
video 1.1 V (p-p)
1
−1
10
IF signals
RMS value
(V)
−2
10
(TOP)
70 dB
VIF AGC
(1) Depends on TOP.
−3
MHA672
10
0.66 × 10
−4
10
−5
10
0.66 × 10
−3
−5
60
SAW insertion
loss 14 dB
40
40 dB
RF gain
20
10
VHF/UHF tunerVIF
tunerSAW filter
VIF amplifier, demodulator
and video
TDA9817; TDA9818
Fig.12 Front end level diagram.
1997 May 1224
Page 25
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
INTERNAL CIRCUITRY
Table 2 Equivalent pin circuits and pin voltages
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
mm
OUTLINE
VERSION
SOT234-1
max.
4.70.513.8
12
min.
max.
IEC JEDEC EIAJ
1.3
0.8
b
1
0.53
0.40
REFERENCES
0.32
0.23
cEeM
(1)(1)
D
22.3
21.4
9.1
8.7
E
12
(1)
Z
L
e
1
3.2
2.8
M
E
10.7
10.2
EUROPEAN
PROJECTION
12.2
10.5
w
H
0.181.77810.16
ISSUE DATE
92-11-17
95-02-04
max.
1.6
1997 May 1234
Page 35
Philips SemiconductorsPreliminary specification
Single/multistandard VIF/SIF-PLL and
FM-PLL/AM demodulators
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“IC Package Databook”
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
(order code 9398 652 90011).
TDA9817; TDA9818
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
stg max
). If the
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 May 1235
Page 36
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands547047/1200/01/pp36 Date of release: 1997 May 12Document order number: 9397 750 01648
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.