INTEGRAL ILA8842

ILA8842
I2C BUS CONTROLLED SINGLE CHIP TV-RECEIVER
FEATURES
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The following features are available:
Multi-standard vision IF circuit with an alignment-free PLL demodulator without external
components
Alignment-free multi-standard FM sound demodulator (4.5 MHz to 6.5 MHz)
Audio switch
Automatic Volume Limiting
Flexible source selection with CVBS switch and Y(CVBS)/C input so that a comb filter can be
applied
Integrated chrominance trap circuit
Integrated luminance delay line
Asymmetrical peaking in the luminance channel with a (defeatable) noise coring function
PAL/SECAM/NTSC decoder
Base-band delay line for PAL and SECAM or chroma comb filter for NTSC
Black stretching of non-standard CVBS or luminance signals
Integrated chroma band-pass filter with switchable centre frequency
Dynamic skin tone control circuit
Blue stretch circuit which offsets colours near white towards blue
RGB control circuit with "Continuous Cathode Calibration" and white point adjustment
Possibility to insert a "blue back" option when no video signal is available
Horizontal synchronization with two control loops and alignment-free horizontal oscillator
Vertical count-down circuit
Vertical driver optimised for DC-coupled vertical output stages
I2C-bus control of various functions
GENERAL DESCRIPTION
The ILA 8842 is I2C-bus controlled single chip TV processor which is intended to be applied in
PAL, NTSC, PAL/NTSC and multi-standard television receivers.
QUICK REFERENCE DATA
SYMBOL
Supply
VP
IP
Input voltages
ViVIFrms)
ViSIF(rms)
ViAUDIO(rms)
ViCVBS(p-p)
ViCHROMA(pp)
ViRGB(p-p)
Output signals
VoCVBS(p-p)
PARAMETER
MIN.
TYP.
MAX.
supply voltage
supply current
-
8.0
110
-
V
mA
video IF amplifier sensitivity (RMS value)
sound IF amplifier sensitivity (RMS value)
external audio input (RMS value)
external CVBS/Y input (peak-to-peak
value)
external chroma input voltage (burst
amplitude) (peak-to-peak value)
RGB inputs (peak-to-peak value)
-
35
1.0
350
1.0
-
µV
mV
mV
V
-
0.3
-
V
-
0.7
-
V
demodulated CVBS output (peak-to-peak
value)
-
2.2
-
V
1
UNIT
ILA8842
IoTUNER
VoVIDSW(p-p)
VoB-Y(p-p)
VoR-Y(p-p)
VoY(p-p)
VoRGB(p-p)
IoHOR
IoVERT
tuner AGC output current range
CVBS1/CVBS2 output voltage of video
switch (peak-to-peak value)
-(R-Y) output/input voltage (peak-to-peak
value)
-(B-Y) output/input voltage (peak-to-peak
value)
Y output/input voltage (peak-to-peak
value)
RGB output signal amplitudes (peak-topeak value)
horizontal output current
vertical output current (peak-to-peak
value)
2
0
-
5
-
mA
V
-
2.0/
1.0
1.05
-
V
-
1.33
-
V
-
1.4
-
V
-
2.0
-
V
10
-
1
-
mA
mA
ILA8842
PINNING
SYMBOL
SNDIF
AUDIOEXT
NC
NC
PLLLF
IFVO
SCL
SDA
DECBG
CHROMA
CVBS/Y
VP1
CVBSINT
GND1
AUDIOOUT
SECPLL
CVBSEXT
BLKIN
BO
GO
RO
BCLIN
RI
GI
BI
RGBIN
LUMIN
LUMOUT
BYO
RYO
BYI
RYI
REFO
XTAL1
XTAL2
DET
VP2
CVBS1O
DECDIG
HOUT
FBISO
PH2LF
PH1LF
GND2
AVL
VDRB
VDRA
IFIN1
IFIN2
EHTO
VSC
Iref
DECAGC
AGCOUT
AUDEEM
DECSDEM
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
DESCRIPTION
Sound IF input
External audio input
not connected
not connected
IF-PLL loop filter
IF video output
serial clock input
serial data input/output
bandgap decoupling
chrominance input (S-VHS)
external CVBS/Y input
main supply voltage (+8 V)
internal CVBS input
ground 1
audio output
SECAM PLL decoupling
external CVBS input
black-current input
blue output
green output
red output
beam current limiter input/V-guard input
red input for insertion
green input for insertion
blue input for insertion
RGB insertion input
not connected
luminance output
(B-Y) signal output
(R-Y) signal output
(B-Y) signal input (not available)
(R-Y) signal input (not available)
subcarrier reference output
3.58 MHz crystal connection
4.43/3.58 MHz crystal connection
loop filter phase detector
2nd supply voltage (+8 V)
CVBS-1 output
Decoupling digital supply
horizontal output
flyback input/sandcastle output
phase-2 filter
phase-1 filter
ground 2
AVL capacitor
vertical drive B output
vertical drive A output
IF input 1
IF input 2
EHT/overvoltage protection input
vertical sawtooth capacitor
reference current input
AGC decoupling capacitor
tuner AGC output
Audio deemphasis
Decoupling sound demodulator
3
ILA8842
Start-up procedure
Read the status bytes until POR = 0 and send all subaddress bytes. The horizontal output
signal is switched-on when the oscillator is calibrated.
Each time before the data in the IC is refreshed, the status bytes must be read. If POR = 1, the
procedure mentioned above must be carried out to restart the IC.
When this procedure is not followed the horizontal frequency may be incorrect after power-up
or after a power dip.
Valid subaddresses: 00 to 1A (subaddresses 04 to 07 and 17 are not used), subaddress FE is
reserved for test purposes.Auto-increment mode available for subaddresses.
Table 1 Input status bits.
FUNCTION
Control 0
Control 1
SUB
ADDRE
SS
(HEX)
00
01
DATA BYTE
D7
D6
Hue
Horizontal shift (HS)
Vertical slope (VS)
02
03
08
Vertical amplitude (VA)
S-correction (SC)
Vertical shift (VSH)
White point R
White point G
White point B
Peaking
Brightness
Saturation
Contrast
AGC take-over
09
0A
0B
0C
0D
0E
0F
10
11
12
13
Volume control
Adjustment IF-PLL
Control 2
Control 3
Control 4
14
15
18
19
1A
INA
FOR
F
AVL
VIM
NCI
N
VID
0
SBL
0
0
MAT
0
RBL
IE1
AFW
MO
D
SM
IFA
OSO
HOB
0
Control 5
1B
0
D5
D4
D3
D2
D1
D0
INB
FOR
S
AKB
GAI
STM
INC
DL
BCO
STB
FOA
POC
FOB
CM2
XA
CM1
A5
A5
A5
A4
A4
A4
A3
A3
A3
A2
A2
A2
A1
A1
A1
XB
CM
0
A0
A0
A0
LBM
EVG
PRD
0
0
0
0
COR
0
IFS
VS
W
FAV
IFB
VSD
BPS
0
A5
A5
A5
A5
A5
A5
A5
A5
A5
A5
A5
A4
A4
A4
A4
A4
A4
A4
A4
A4
A4
A4
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A2
A2
A2
A2
A2
A2
A2
A2
A2
A2
A2
A1
A1
A1
A1
A1
A1
A1
A1
A1
A1
A1
A0
A0
A0
A0
A0
A0
A0
A0
A0
A0
A0
A5
IFC
CB
ACL
0
A4
0
BLS
CMB
0
A3
0
BKS
AST
0
A2
0
0
CL2
0
A1
0
0
CL1
FFI
0
0
0
0
0
0
A0
0
BB
CL0
EB
S
FC
O
4
ILA8842
Table 2 Output status bits.
FUNCTION
Output status bytes
SUB
ADDRE
SS
(HEX)
00
DATA BYTE
D7
D6
D5
D4
D3
D2
D1
D0
CD
0
SX
B
ID0
POR
FSI
X
SL
XPR
CD2
CD1
01
NDF
IN1
X
IFI
AFA
AFB
SXA
02
N2
X
BCF
IVW
ID3
ID2
ID1
min
Typ.
7,2
-
8
70
60
1040
10
35
100 µV
fi = 45.75 MHz
10
35
100 µV
fi = 58.75 MHz
10
35
100 µV
Table 3 Characteristics
Parameter
CONDITIONS
Supplies
POWER SUPPLY (PINS 12 AND 37)
supply voltage
supply current pin 12
supply current pin 37
total power dissipation
IF circuit
VISION IF AMPLIFIER INPUTS (PINS 48 AND 49)
input sensitivity (RMS value)
fi = 38.90 MHz
input resistance (differential)
input capacitance (differential)
gain control range
64
maximum input signal (RMS value)
150
PLL DEMODULATOR (PLL FILTER ON PIN 5);
Free-running frequency of VCO
PLL
not
locked, -500
deviation
from
nominal setting
Catching range PLL
Acquisition time PLL
VIDEO AMPLIFIER OUTPUT (PIN 6);
negative modulation;
positive modulation;
top sync level
negative modulation
white level
positive modulation
Difference in amplitude between negative and
positive modulation
video output impedance
Internal bias current of NPN emitter follower
output transistor
zero signal output level
5
2
3
75
-
max unit
8,8
-
-
V
mA
mA
mW
k
pF
dB
mV
+500 kHz
2
-
MHz
-
-
20
ms
1,8
-
4,2
2,2
1,9
4,4
0
2
15
V
V
V
V
%
1
50
-
-
mA
ILA8842
maximum source current
Bandwidth of demodulated output signal
at -3 dB
6
Differential gain
Differential phase
video non-linearity
white spot clamp level
noise inverter clamping level
noise inverter insertion level (identical to black
level)
Intermodulation
Blue
Vo = 0.92 or 1.1 60
MHz
Vo = 2.66 or 3.3 60
MHz
Yellow
Vo = 0.92 or 1.1 56
MHz
Vo = 2.66 or 3.3 60
MHz
signal-to-noise ratio
Weighted
56
Unweighted
49
Residual carrier signal
Residual 2nd harmonic of carrier signal
IF AND TUNER AGC;
Timing of IF-AGC with a 2.2 µF capacitor (pin 53)
Modulated video interference
30% AM for 1 mV to
100 mV; 0 to 200 Hz
(system B/G)
Response time to IF input signal amplitude positive
and
increase of 52 dB
negative modulation
Response to an IF input signal amplitude negative modulation
decrease of 52 dB
positive modulation
allowed leakage current of the AGC capacitor
negative modulation
positive modulation
Tuner take-over adjustment (via I2C-bus)
minimum starting level for tuner take-over (RMS
value)
maximum starting level for tuner take-over (RMS
40
value)
Tuner control output (pin 54)
maximum tuner AGC output voltage
maximum tuner gain;
output saturation voltage
Minimum tuner gain;
IO = 2 mA
maximum tuner AGC output swing
5
leakage current RF AGC
input signal variation for complete tuner control
0,5
AFC OUTPUT (VIA I2C-BUS);
AFC resolution
window sensitivity
window sensitivity in large window mode
VIDEO IDENTIFICATION OUTPUT (VIA I2C-BUS)
6
9
2
6
1,5
2,7
5
5
5
5
-
mA
MHz
%
deg
%
V
V
V
66
-
dB
66
-
DB
62
-
dB
66
-
dB
60
53
5,5
2,5
-
dB
dB
mV
mV
-
10
%
2
-
ms
50
-
ms
100
-
ms
10 µA
200 nA
0,2
0,8 mV
60
-
-
mV
9 V
300 mV
2
1
4
mA
µA
dB
2
125
275
-
bits
kHz
kHz
ILA8842
delay time of identification after the AGC has
stabilized on a new transmitter
Sound circuit
DEMODULATOR INPUT; (PIN 1)
input limiting for PLL catching range (RMS value)
Catching range PLL
input resistance
input capacitance
AM rejection
VI = 50 mV RMS;
DE-EMPHASIS (PIN 55)
output signal amplitude (RMS value)
output resistance
DC output voltage
AUDIO OUTPUT (PIN 15)
Controlled output signal amplitude (RMS value)
-6 dB;
output resistance
DC output voltage
total harmonic distortion
-
-
10
ms
4,2
60
1
8,5
66
2
6,8
5
-
mV
MHz
k
pF
dB
-
500
15
3
-
mV
k
V
500
-
700
500
3
0,15
900 mV
V
0,5 %
total harmonic distortion
FAV = 1;
power supply rejection
Internal signal-to-noise ratio
External signal-to-noise ratio
output level variation with temperature
control range
Suppression of output signal when mute is active
DC shift of the output when mute is active
EXTERNAL AUDIO INPUT; (PIN 2)
input signal amplitude (RMS value)
input resistance
voltage gain difference between input and output maximum volume
Crosstalk between internal and external audio
60
signals
AUTOMATIC VOLUME LEVELLING; CAPACITOR CONNECTED TO PIN 45;
gain at maximum boost
gain at minimum boost
charge (attack) current
Discharge (decay) current
control voltage at maximum boost
control voltage at minimum boost
CVBS, Y/C, RGB, CD AND LUMINANCE OUT- AND INPUTS
CVBS-Y/C SWITCH, PINS 10, 11, 13, 17 AND 38
CVBS or Y input voltage (peak-to-peak value)
-
0,15
25
60
80
80
80
50
0,5
tbf
100
%
dB
dB
dB
dB
dB
dB
mV
500
25
9
-
2000
-
mV
k
dB
dB
6
-14
1
200
1
5
-
dB
dB
mA
nA
V
V
CVBS or Y input current
suppression of non-selected CVBS input signal
chrominance input voltage (burst amplitude)
chrominance input impedance
output signal amplitude (CVBS1) (peak-to-peak
value)
black level of CVBS1
output impedance
RGB INPUTS, PINS 23 TO 25
50
-
4
0,3
50
2
-
2,1
-
7
1
1,4 V
1
-
µA
dB
V
k
V
V
250
ILA8842
input signal amplitude for an output signal of 2 V
0,7
0,8
(black-to-white) (peak-to-peak value)
input signal amplitude before clipping occurs
1
(peak-to-peak value)
difference between black level of internal and
20
external signals at the outputs
input currents
no clamping;
0,1
1
delay difference for the three channels
0
20
FAST BLANKING, PIN 26
input voltage
no data insertion
0,4
data insertion
0,9
0,6
maximum input pulse
insertion
3
delay time from RGB in to RGB out
data insertion;
60
delay difference between insertion to RGB out and data insertion;
20
RGB in to RGB out
input current
0,2
suppression of internal RGB signals
insertion; fi = 0 to 5
55
MHz
suppression of external RGB signals
no insertion; fi = 0 to
55
5 MHz
input voltage to blank the RGB outputs to facilitate only on pin 26 (pin 4
`On Screen Display' signals being applied to the 38 for the ILA 885X)
outputs
COLOUR DIFFERENCE OUTPUT AND INPUT SIGNALS (PINS 29, 30, 31 AND 32);
signal amplitude (R-Y) (peak-to-peak value)
1,05
signal amplitude (B-Y) (peak-to-peak value)
1,33
LUMINANCE INPUTS AND OUTPUTS (PIN 28);
output signal amplitude (peak-to-peak value)
top sync-white
1,4
top sync level
2
output impedance
250
Chrominance filters
CHROMINANCE TRAP CIRCUIT;
trap frequency
fosc
Bandwidth at fSC = 3.58 MHz
-3 dB
2,8
Bandwidth at fSC = 4.43 MHz
-3 dB
3,4
colour subcarrier rejection
at nominal peaking
20
30
trap frequency during SECAM
4,3
CHROMINANCE BANDPASS CIRCUIT
centre frequency (CB = 0)
fosc
centre frequency (CB = 1)
1,1xfo MHz
sc bandpass quality factor
3
CLOCHE FILTER
centre frequency
4,26 4,29 4,31
Bandwidth
241 268 295
LUMINANCE PROCESSING
Y DELAY LINE
delay time
480
bandwidth of internal delay line
8
PEAKING CONTROL;
width of preshoot or overshoot
160
-
8
V
V
mV
µA
ns
V
V
V
ns
ns
mA
dB
dB
V
V
V
V
V
MHz
MHz
MHz
dB
MHz
MHz
MHz
kHz
ns
MHz
ns
ILA8842
peaking signal compression threshold
overshoot at maximum peaking
Ratio negative/positive overshoot
peaking control curve
positive
negative
-
50
45
80
1,8
-
IRE
%
%
-
15
-
IRE
63 steps
CORING STAGE
coring range
BLACK LEVEL STRETCHER;
Maximum black level shift
15
21
27 IRE
level shift at 100% peak white
-1
0
1 IRE
level shift at 50% peak white
-1
3 IRE
level shift at 15% peak white
6
8
10 IRE
Horizontal and vertical synchronization and drive circuits
SYNC VIDEO INPUT (PINS 11, 13 AND 17)
sync pulse amplitude
50
300 350 mV
slicing level for horizontal sync
50
%
slicing level for vertical sync
30
%
HORIZONTAL OSCILLATOR
free running frequency
15625
Hz
spread on free running frequency
±2 %
frequency variation with respect to the supply VP = 8.0 V ±10%;
0,3
0,5 %
voltage
frequency variation with temperature
Tamb = 0 to 70°C;
100 Hz
FIRST CONTROL LOOP (FILTER CONNECTED TO PIN 43);
holding range PLL
±0,9 ±1,2 kHz
catching range PLL
±0,6 ±0,9
kHz
signal-to-noise ratio of the video input signal at
20
dB
which the time constant is switched
hysteresis at the switching point
3
dB
SECOND CONTROL LOOP (CAPACITOR CONNECTED TO PIN 42)
control sensitivity
120
µs/µs
control range from start of horizontal output to
19
µs
flyback at nominal shift position
horizontal shift range
63 steps
±2
µs
control sensitivity for dynamic compensation
7,6
µs/V
Voltage to switch-on the "flash" protection
6
V
Input current during protection
1 mA
HORIZONTAL OUTPUT (PIN 40);
LOW level output voltage
IO = 10 mA
0,4
tbf V
maximum allowed output current
maximum allowed output voltage
duty factor
frequency during switch-on and switch-off
duty factor during switch-on and switch-off
switch-on time
switch-off time with RGB drive maximum
VOUT = HIGH,
switch-off time with RGB drive minimum
FLYBACK PULSE INPUT AND SANDCASTLE OUTPUT (PIN 41)
required input current during flyback pulse
output voltage
during burst key
9
10
-
45
2xfH
72
100
100/8
0
60
100
4,8
5,3
VP
-
mA
V
%
-
ms
%
ms
ms
300 µA
5,8 V
ILA8842
during blanking
1,9
2,6
2,1
3
2,3 V
3,4 V
burst key pulse
vertical blanking
3,3
5,2
3,5
14
5,4
3,7 µs
lines
5,6 µs
clamped input voltage during flyback
pulse width
delay of start of burst key to start of sync
VERTICAL OSCILLATOR;
free running frequency
locking range
divider value not locked
locking range
VERTICAL RAMP GENERATOR (PIN 51 AND 52)
sawtooth amplitude (peak-to-peak value)
VS = 1FH; C = 100
nF; R = 39 k
discharge current
charge current set by external resistor
vertical slope
control range (63
steps)
charge current increase
f = 60 Hz
LOW level of ramp
VERTICAL DRIVE OUTPUTS (PINS 46 AND 47)
differential output current (peak-to-peak value)
VA = 1FH
common mode current
output voltage range
EHT TRACKING/OVERVOLTAGE PROTECTION (PIN 50)
input voltage
scan modulation range
vertical sensitivity
overvoltage detection level
DE-INTERLACE
first field delay
VERTICAL AMPLITUDE
control range
63 steps; SC = 00H
equivalent differential vertical drive output current SC = 00H
(peak-to-peak value)
VERTICAL SHIFT
control range
63 steps
equivalent differential vertical drive output current
(peak-to-peak value)
S-CORRECTION
control range
63 steps
Colour demodulation part
CHROMINANCE AMPLIFIER
ACC control range
change in amplitude of the output signals over the
ACC range
threshold colour killer ON
10
45
50/60
Hz
64,5/7 Hz
2
625/5
lines
25
434/4
722 lines/f
88
rame
-
3
-
V
-20
0,9
16
-
-
19
2,3
-
%
V
0
0,95
400
-
4
mA
µA
V
1,2
-5
-
6,3
3,9
2,8
+5
-
V
%
%/V
V
-
0,5H
-
80
760
-
120 %
1140 µA
-5
-50
-
+5 %
+50 µA
0
-
30
%
26
-
-
2
dB
dB
-30
-
-
dB
mA
µA
+20 %
ILA8842
hysteresis colour killer OFF
strong
signal
conditions; S/N>40
dB;
noisy input signals;
ACL CIRCUIT;
chrominance burst ratio at which the ACL starts to
operate
REFERENCE PART
Phase-locked loop;
catching range
phase shift for a ±400 Hz deviation of the oscillator
frequency
Oscillator
temperature coefficient of the oscillator frequency
oscillator frequency deviation with respect to the VP = 8 V ±10%
supply
minimum negative resistance
maximum load capacitance
HUE CONTROL
hue control range
63 steps;
hue variation for ±10% VP
hue variation with temperature
Tamb = 0 to 70 °C;
DEMODULATORS (PINS 29 AND 30)
General
(R-Y) output signal amplitude (peak-to-peak value)
(B-Y) output signal amplitude (peak-to-peak value)
spread of signal amplitude ratio between
standards
output impedance (R-Y)/(B-Y) output
bandwidth of demodulators
-3 dB;
PAL/NTSC demodulator
gain between both demodulators G(B-Y) and G(RY)
residual carrier output (peak-to-peak value); only f = fosc; (R-Y) output
valid for PAL and NTSC signals
f = fosc; (B-Y) output
f = 2fosc; (R-Y)
output
f = 2fosc; (B-Y)
output
H/2 ripple at (R-Y) output (peak-to-peak value)
change of output signal amplitude with
temperature
change of output signal amplitude with supply
voltage
phase error in the demodulated signals
SECAM demodulator
black level off-set
pole frequency of deemphasis
ratio pole and zero frequency
non linearity
calibration voltage pin 16
Base-band delay line
11
-
+3
-
dB
-
+1
-
dB
-
3
-
±360 ±600
-
2
Hz
deg
-
-
1
25
Hz/K
Hz
-
-
1
15
k
pF
±35
-
±40
0
0
-
deg
deg
deg
-1,5
1,05
1,33
-
-
500
650
-
1,6
1,78
1,96
-
-
10
10
10
mV
mV
mV
-
-
10
mV
-
0,1
25
-
mV
%/K
-
-
-
-
±8
deg
77
3
85
3
4
7
93
3
5
kHz
kHz
V
V
1,5 dB
kHz
±0,2 dB
%
V
ILA8842
variation of output signal for adjacent time
-0,1
0,1
samples at constant input signals
residual clock signal (peak-to-peak value)
5
delay of delayed signal
63,94 64 64,06
delay of non-delayed signal
40
60
80
difference in output amplitude with delay on or off
5
COLOUR DIFFERENCE MATRICES (IN CONTROL CIRCUIT)
PAL/SECAM mode;
ratio of demodulated signals ±10%
-0,51
ratio of demodulated signals ±25%
-0,19
NTSC mode; the matrix results in the following signals (nominal hue setting)
(B-Y) signal: 2.03/0°
2.03UR
-0.14UR + 1.58VR
(R-Y) signal: 1.59/95°
-0.31UR - 0.53VR
(G-Y) signal: 0.61/240°
REFERENCE SIGNAL OUTPUT PIN 33;
reference frequency
3,58/4
,43
output signal amplitude (peak-to-peak value)
0,2 0,25 0,3
output level to enable the comb filter
4
4,2
5
output level to disable the comb filter
0,1
1,4
Control part
SATURATION CONTROL
Saturation control range
63 syeps
52
CONTRAST CONTROL;
contrast control range
63 steps
tracking between the three channels over a
control range of 10 dB
BRIGHTNESS CONTROL
brightness control range
63 steps;
RGB AMPLIFIERS (PINS 19, 20 AND 21)
output signal amplitude (peak-to-peak value)
at
nominal tbf
luminance
input
signal,
nominal
contrast and whitepoint adjustment;
maximum signal amplitude (black-to-white)
input signal amplitude (Y-input, pin 28) at which
the soft clipping is activated
output signal amplitude for the `red' channel at nominal settings tbf
(peak-to-peak value)
for
contrast and
saturation
control
and no luminance
signal to the input
(R-Y, PAL)
nominal black level voltage
black level voltage
when black level
stabilisation
is
switched-off
(via
AKB bit)
black level voltage control range
VSD bit active;
1,8
12
18
-
-
dB
mV
µs
ns
%
MHz
V
V
V
dB
dB
0,5 dB
±0,7
-
V
2
tbf
V
tbf
tbf
-
V
V
2,1
tbf
V
2,4
2,5
-
V
V
2,5
3,2 V
ILA8842
width of video blanking with HBL bit active
control range of the black-current stabilisation
blanking level
14,4
difference with black
level
level during leakage measurement
level during "low" measuring pulse
level during "high" measuring pulse
adjustment range of the ratio between the
amplitudes of the RGB drive voltage and the
measuring pulses
variation of black level with temperature
relative variation in black level between the three
channels during variations of
supply voltage (±10%)
nominal controls
saturation (50 dB)
nominal contrast
contrast (20 dB)
nominal saturation
brightness (±0.5 V)
nominal controls
temperature (range 40 °C)
signal-to-noise ratio of the output signals
RGB input;
60
CVBS input;
50
residual voltage at the RGB outputs (peak-to-peak at fosc
value)
at 2fosc plus higher
harmonics
bandwidth of output signals
RGB input; at -3 dB
9
CVBS input; at -3
dB; fosc = 3.58 MHz
CVBS input; at -3
dB; fosc = 4.43 MHz
S-VHS input; at -3 6
dB
WHITE-POINT ADJUSTMENT
I2C-bus setting for nominal gain
HEX code
adjustment range of RGB drive levels
gain control range to compensate spreads in
picture tube characteristics
2-POINT BLACK-CURRENT STABILISATION (PIN 18);
amplitude of "low" reference current
amplitude of "high" reference current
acceptable leakage current
maximum current during scan
input impedance
BEAM CURRENT LIMITING (PIN 22);
contrast reduction starting voltage
voltage difference for full contrast reduction
brightness reduction starting voltage
voltage difference for full brightness reduction
internal bias voltage
detection level vertical guard
minimum input current to activate the guard circuit
maximum allowable current
-
13
14,7
±1
-0,5
15
-
µs
V
V
-0,1
0,25
0,38
±3
-
V
V
V
dB
1
-
mV/K
-
tbf
tbf
tbf
tbf
tbf
15
15
mV
mV
mV
mV
mV
dB
dB
mV
mV
2,8
-
MHz
MHz
3,5
-
MHz
-
-
MHz
20H
±3
±6
-
dB
dB
8
20
±100
tbf
tbf
-
µA
µA
µA
mA
3
1,8
1,9
1
3,3
3,65
100
1
-
V
V
V
V
V
V
µA
mA
ILA8842
BLUE STRETCH;
Decrease of small signal gain for the red and BLS = 1
green channel
Decrease of small signal gain for the red channel EBS = 1
Decrease of small signal gain for the green EBS = 1
channel
I2C-BUS CONTROL INPUT/OUTPUT (SDA/SCL)
input voltage level
low-level input voltage
high-level input voltage
low-level input current
Vi = 0 V
high-level input current
Vi = 5.5 V
low-level output voltage
SDA, IL = 3 mA
14
-
14
-
%
-
22
8
-
%
%
0
3,5
-
-
5,5
1,5
-10
10
0,4
V
V
V
µA
µA
V