TDA9811-V4
DATA SH EET
Product specification
Supersedes data of 1995 Oct 03
File under Integrated Circuits, IC02
1998 Feb 09
INTEGRATED CIRCUITS
TDA9811
Multistandard VIF-PLL with QSS-IF
and AM demodulator
1998 Feb 09 2
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
FEATURES
• 5 V supply voltage
• Two switched VIF inputs, gain controlled wide band
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
• VCO frequency switchable between L and L accent
(alignment external) picture carrier frequency
• Separate video amplifier for sound trap buffering with
high video bandwidth
• VIF-AGC detector for gain control, operating as peak
sync detector for B/G and peak white detector for L
(optional external AGC); signal controlled reaction time
for L
• Tuner AGC with adjustable takeover point (TOP)
• AFC detector without extra reference circuit
• SIF input for single reference QSS 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
• AM demodulator without extra reference circuit
• AM mute (especially for NICAM)
• Stabilizer circuit for ripple rejection and to achieve
constant output signals
• ESD protection for all pins.
GENERAL DESCRIPTION
The TDA9811 is an integrated circuit for multistandard
vision IF signal processing and sound AM, with single
reference QSS-IF in TV and VCR sets.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA9811 SDIP32 plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1
1998 Feb 09 3
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage 4.5 5 5.5 V
I
P
supply current 93 109 125 mA
V
i VIF(rms)
vision IF input signal voltage sensitivity
(RMS value)
−1 dB video at output − 60 100 µV
V
o CVBS(p-p)
CVBS output signal voltage
(peak-to-peak value)
1.7 2.0 2.3 V
B
−3
−3 dB video bandwidth on pin CVBS B/G and L standard;
C
L
< 20 pF; R
L
> 1kΩ; AC load
78−MHz
S/N (W) weighted signal-to-noise ratio for video 56 60 − dB
IM
α1.1
intermodulation attenuation at ‘blue’ f = 1.1 MHz 58 64 − dB
IM
α3.3
intermodulation attenuation at ‘blue’ f = 3.3 MHz 58 64 − dB
α
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 − 30 70 µV
V
o(rms)
audio output signal voltage
(RMS value)
L standard; 54% modulation − 0.5 − V
THD total harmonic distortion L standard; 54% modulation − 0.5 1.0 %
S/N (W) weighted signal-to-noise ratio L standard; 54% modulation 47 53 − dB
1998 Feb 09 4
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
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BLOCK DIAGRAM
Fig.1 Block diagram.
b
ook, full pagewidth
SINGLE REFERENCE
MIXER AND
AM DEMODULATOR
VCO TWD
AFC DETECTOR
TUNER AND VIF-AGC
VIF input switch
FPLL
VIDEO DEMODULATOR
AND AMPLIFIER
SIF
AMPLIFIER
SIF-AGC
INTERNAL VOLTAGE
STABILIZER
VIF AMPLIFIER
AND
INPUT SWITCH
SIF
VIFB
VIFA
TDA9811
29 27 26 9 8
10
21
22
12
2324257192830 63
5
4
2
1
32
31
5 V
V
P
1/2
C
SAGC
standard
switch
20
17
13
14
AF AMPLIFIER
AND SWITCH
AF/AM
n.c.
n.c.
1811
n.c.
16
n.c.
15
n.c.
VIDEO
BUFFER
CVBS
2 V (p-p)
video
1 V (p-p)
AFC
2 x f
PC
tuner
AGC
loop
filter
TOP
C
VAGC
C
BL
MHA046
mute switch, AM
(2nd SIF)
V
o QSS
L/L accent
switch
V
i(vid)
1998 Feb 09 5
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
PINNING
SYMBOL PIN DESCRIPTION
V
i VIF1
1 VIF differential input signal voltage 1
V
i VIF2
2 VIF differential input signal voltage 2
C
BL
3 black level detector
V
i VIF3
4 VIF differential input signal voltage 3
V
i VIF4
5 VIF differential input signal voltage 4
TADJ 6 tuner AGC takeover adjust (TOP)
T
PLL
7 PLL loop filter
C
SAGC
8 SIF AGC capacitor
STD 9 standard switch
V
o CVBS
10 CVBS output signal voltage
LSWI 11 L/L accent switch
V
oAF
12 AM audio voltage frequency output
n.c. 13 not connected
n.c. 14 not connected
n.c. 15 not connected
n.c. 16 not connected
MUTE 17 AM mute
n.c. 18 not connected
TAGC 19 tuner AGC output
V
o QSS
20 single reference QSS output voltage
V
o(vid)
21 composite video output voltage
V
i(vid)
22 video buffer input voltage
AFC 23 AFC output
VCO1 24 VCO1 reference circuit for 2f
PC
VCO2 25 VCO2 reference circuit for 2f
PC
C
ref
26
1
⁄
2
V
P
reference capacitor
GND 27 ground
C
VAGC
28 VIF-AGC capacitor
V
P
29 supply voltage
INSWI 30 VIF input switch
V
i SIF1
31 SIF differential input signal voltage 1
V
i SIF2
32 SIF differential input signal voltage 2
Fig.2 Pin configuration.
handbook, halfpage
TDA9811
MHA047
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
V
C
TADJ
T
C
STD
V
LSWI
V
n.c.
n.c.
n.c.
n.c.
V
V
V
C
GND
INSWI
C
VCO2
VCO1
AFC
V
V
V
TAGC
n.c.
o AF
o CVBS
SAGC
PLL
BL
i VIF2
i VIF1
V
V
i VIF4
i VIF3
P
i SIF1
i SIF2
VAGC
ref
MUTE
o QSS
o(vid)
i(vid)
1998 Feb 09 6
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
FUNCTIONAL DESCRIPTION
The integrated circuit comprises the functional blocks as
shown in Fig.1:
• Vision IF amplifier and input switch
• Tuner and VIF-AGC
• Frequency Phase Locked Loop detector (FPLL)
• VCO, Travelling Wave Divider (TWD) and AFC
• Video demodulator and amplifier
• Video buffer
• SIF amplifier and AGC
• Single reference QSS mixer
• AM demodulator
• Internal voltage stabilizer and
1
⁄
2
V
P
-reference.
Vision IF amplifier and input switch
The vision IF amplifier consists of three AC-coupled
differential amplifier stages. Each differential stage
comprises a feedback network controlled by emitter
degeneration. The first differential stage is extended by
two pairs of emitter followers to provide two IF input
channels. The VIF input can be selected by pin 30.
Tuner and VIF-AGC
The AGC capacitor voltage is transferred to an internal IF
control signal, and is fed to the tuner AGC to generate the
tuner AGC output current (open-collector output). The
tuner AGC takeover point can be adjusted. This allows the
tuner and the SAW filter to be matched to achieve the
optimum IF input level.
The AGC detector charges/discharges the AGC capacitor
to the required voltage for setting of VIF and tuner gain in
order to keep the video signal at a constant level.
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.
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
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. 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. At centre frequency the AFC output current is equal
to zero.
The oscillator signal is divided-by-two 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 is 1 V (p-p)
for nominal vision IF modulation.
1998 Feb 09 7
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
Video buffer
For an easy adaption of the sound traps an operational
amplifier with internal feedback is used in the event of B/G
and L standard. This amplifier is featured with a high
bandwidth and 7 dB gain. The input impedance is adapted
for operating in combination with ceramic sound traps. The
output stage delivers a nominal 2 V (p-p) positive video
signal. Noise clipping is provided.
SIF amplifier and 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 signals
(average level of AM or FM carriers) and controls the SIF
amplifier to provide a constant SIF signal to the AM
demodulator and single reference QSS mixer. 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 also set to ‘fast’
controlled by the standard switch.
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 20. With this
system a high performance hi-fi stereo sound processing
can be achieved.
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.
Internal voltage stabilizer and
1
⁄
2
V
P
-reference
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.
For the audio output signal the constant reference voltage
cannot be used because large output signals are required.
Therefore this signal refers to half the supply voltage to
achieve a symmetrical headroom. For ripple and noise
attenuation the
1
⁄
2
V
P
voltage has to be filtered via a
low-pass filter by using an external capacitor together with
an integrated resistor (f
g
= 5 Hz). For a fast setting to
1
⁄
2
V
P
an internal start-up circuit is added.
1998 Feb 09 8
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
Notes
1. I
P
= 125 mA; T
amb
=70°C; R
th(j-a)
= 60 K/W.
2. Machine model class B (L = 2.5 µH).
THERMAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
P
supply voltage (pin 29) maximum chip temperature
of 125 °C; note 1
0 7.0 V
V
i
voltage at pins 1 to 9, 1 1, 12, 19, 22, 23 and
26 to 32
0V
P
V
t
s(max)
maximum short-circuit time − 10 s
V
19
tuner AGC output voltage 0 13.2 V
T
stg
storage temperature −25 +150 °C
T
amb
operating ambient temperature −20 +70 °C
V
es
electrostatic handling voltage note 2 −300 +300 V
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
th(j-a)
thermal resistance from junction to ambient in free air 60 K/W
1998 Feb 09 9
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
CHARACTERISTICS
V
P
=5V; T
amb
=25°C; see Table 1 for input frequencies and carrier ratios; input level V
i IF 1-2, 4-5
= 10 mV RMS value
(sync-level for B/G, peak white level for L); video modulation DSB; residual carrier B/G: 10%; L = 3%; video signal in
accordance with
“CCIR, line 17”
; measurements taken in Fig.13; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply (pin 29)
V
P
supply voltage note 1 4.5 5 5.5 V
I
P
supply current 93 109 125 mA
Vision IF amplifier (pins 1, 2, 4 and 5)
V
i VIF(rms)
input signal voltage
sensitivity (RMS value)
B/G standard;
−1 dB video at output
− 60 100 µV
V
i max(rms)
maximum input signal
voltage (RMS value)
B/G standard;
+1 dB video at output
120 200 − mV
∆V
o(int)
internal IF amplitude
difference between picture
and sound carrier
within AGC range;
B/G standard; ∆f = 5.5 MHz
− 0.7 1 dB
G
IFcr
IF gain control range see Fig.3 65 70 − dB
R
i(diff)
differential input resistance note 2; activated input 1.7 2.2 2.7 kΩ
C
i(diff)
differential input capacitance note 2; activated input 1.2 1.7 2.5 pF
V
1,2,4,5
DC input voltage note 2; activated input − 3.4 − V
R
i
input resistance to ground note 2; not activated input − 1.1 − kΩ
V
1,2,4,5
DC input voltage note 2; not activated input − 0.2 − V
α
ct IF
crosstalk attenuation of
IF input switch at pins 1, 2,
4 and 5
notes 2 and 3 55 60 − dB
True synchronous video demodulator; note 4
f
VCO(max)
maximum oscillator
frequency for carrier
regeneration
f=2f
PC
125 130 − MHz
∆f
osc
/∆T oscillator drift as a function
of temperature
oscillator is free-running;
I
AFC
= 0; note 5
−−±20 × 10
−6
K
−1
V
0 ref(rms)
oscillator voltage swing at
pins 24 and 25 (RMS value)
70 100 130 mV
f
PC CR
picture carrier capture range B/G and L standard ±1.4 ±1.8 − MHz
L accent standard;
f
PC
= 33.9 MHz; R
11
= 5.6 kΩ
±0.9 ±1.2 − MHz
Qf
PC(fr)
picture carrier frequency
(free-running) accuracy
L accent standard;
f
PC
= 33.9 MHz; R
11
= 5.6 kΩ
−±200 ±400 kHz
f
PC(alg)CR
L accent alignment
frequency range
I
AFC
=0 ±400 ±600 − kHz
t
acq
acquisition time BL = 75 kHz; note 6 −−30 ms
V
i VIF(rms)
VIF input signal voltage
sensitivity for PLL to be
locked (RMS value;
pins 1, 2, 4 and 5)
maximum IF gain; note 7 − 30 70 µV
1998 Feb 09 10
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
Composite video amplifier (pin 21; sound carrier off)
V
o video(p-p)
output signal voltage
(peak-to-peak value)
see Fig.8 0.88 1.0 1.12 V
V/S ratio between video
(black-to-white) and
sync level
1.9 2.33 3.0 −
∆V
o(video)
output signal voltage
difference
difference between
B/G and L standard
−−±12 %
V
21(sync)
sync voltage level B/G and L standard − 1.5 − V
V
21(clu)
upper video clipping voltage
level
V
P
− 1.1 V
P
− 1 − V
V
21(cll)
lower video clipping voltage
level
− 0.7 0.9 V
R
o,21
output resistance note 2 −−10 Ω
I
int 21
internal DC bias current for
emitter-follower
2.2 3.0 − mA
I
21 max(sink)
maximum AC and DC output
sink current
1.6 −− mA
I
21 max(source)
maximum AC and DC output
source current
2.9 −− mA
B
−1
−1 dB video bandwidth B/G and L standard;
C
L
< 50 pF; R
L
> 1kΩ;
AC load
56− MHz
B
−3
−3 dB video bandwidth B/G and L standard;
C
L
< 50 pF; R
L
> 1kΩ;
AC load
78− MHz
α
H(sup)
suppression of video signal
harmonics
C
L
< 50 pF; R
L
> 1kΩ;
AC load; note 8a
35 40 − dB
PSRR power supply ripple rejection
at pin 21
video signal; grey level;
see Fig.11
B/G standard 32 35 − dB
L standard 26 30 − dB
CVBS buffer amplifier (only) and noise clipper (pins 10 and 22)
R
i,22
input resistance note 2 2.6 3.3 4.0 kΩ
C
i,22
input capacitance note 2 1.4 2 3.0 pF
V
I,22
DC input voltage 1.4 1.7 2.0 V
G
v
voltage gain B/G and L standard; note 9 6.5 7 7.5 dB
V
10(clu)
upper video clipping voltage
level
3.9 4.0 − V
V
10(cll)
lower video clipping voltage
level
− 1.0 1.1 V
R
o,10
output resistance note 2 −−10 Ω
I
int 10
DC internal bias current for
emitter-follower
2.0 2.5 − mA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
1998 Feb 09 11
Philips Semiconductors Product specification
Multistandard VIF-PLL with QSS-IF and
AM demodulator
TDA9811
I
o,10 max(sink)
maximum AC and DC output
sink current
1.4 −− mA
I
o,10 max(source)
maximum AC and DC output
source current
2.4 −− mA
B
−1
−1 dB video bandwidth B/G and L standard;
C
L
< 20 pF; R
L
> 1kΩ;
AC load
8.4 11 − MHz
B
−3
−3 dB video bandwidth B/G and L standard;
C
L
< 20 pF; R
L
> 1kΩ;
AC load
11 14 − MHz
Measurements from IF input to CVBS output (pin 10; 330 Ω between pins 21 and 22, sound carrier off)
V
o CVBS(p-p)
CVBS output signal voltage
on pin 10
(peak-to-peak value)
note 9 1.7 2.0 2.3 V
V
o CVBS(sync)
sync voltage level B/G standard − 1.35 − V
L standard − 1.35 − V
∆V
o
deviation of CVBS output
signal voltage at B/G
50 dB gain control −−0.5 dB
30 dB gain control −−0.1 dB
∆V
o(blB/G)
black level tilt in
B/G standard
gain variation; note 10 −−1%
∆V
o(blL)
black level tilt for worst case
in L standard
picture carrier modulated by
test line (VITS) only;
gain variation; note 10
−−1.9 %
G
diff
differential gain
“CCIR, line 330”
− 25 %
ϕ
diff
differential phase
“CCIR, line 330”
− 1 2 deg
B
−1
−1 dB video bandwidth C
L
< 20 pF; R
L
> 1kΩ;
AC load; B/G and L standard
56− MHz
B
−3
−3 dB video bandwidth C
L
< 20 pF; R
L
> 1kΩ;
AC load; B/G and L standard
78− MHz
S/N (W) weighted signal-to-noise
ratio
see Fig.5 and note 11 56 60 − dB
S/N unweighted signal-to-noise
ratio
see Fig.5 and note 11 49 53 − dB
IMα
1.1
intermodulation attenuation
at ‘blue’
f = 1.1 MHz;
see Fig.6 and note 12
58 64 − dB
intermodulation attenuation
at ‘yellow’
f = 1.1 MHz;
see Fig.6 and note 12
60 66 − dB
IMα
3.3
intermodulation attenuation
at ‘blue’
f = 3.3 MHz;
see Fig.6 and note 12
58 64 − dB
intermodulation attenuation
at ‘yellow’
f = 3.3 MHz;
see Fig.6 and note 12
59 65 − dB
α
pc(rms)
residual picture carrier
(RMS value)
fundamental wave and
harmonics;
B/G and L standard
− 25 mV
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
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