TBA920 ,13.2V; 600mW; line ocsillator combinationElectrical Characteristics at V1-16 = 12V, TA = 25°C as measured in application circuit
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TBA920
13.2V; 600mW; line ocsillator combination
TBA920/TBA9208
National TV Circuits
Semiconductor
TBA920lTBA920S Line Oscillator Combination
General Description
The TBA920 is a monolithic integrated circuit intended I Line oscillator
far TV receivers with transistor-thyristtrr- or valve
equipped output stages.
l Loop gain and time constant switching (also for video
recorder applications)
It comblnes the following functions: I Phase comparison between line-flyback pulse and
. oscillator
I Noise gated sync separator
ll Phase comparison between sync pulse and oscillator I Output stage for driving a variety of line output stages
Connection Diagram
DuaI-In-Line Package
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ANLIBATOON
Absolute Maximum Ratings
V146 13.2V Operating Temperature Range -atfc to +60°C
12 (Mean) 20 mA Storage Temperature Range --65"tt to +150°C
12 (Peak) 200 mA Lead Temperature (Soldering, 10 seconds) 300°C
15, 17, lg 10 mA Power Dissipation (TA = 60°C) 600 mW
Electrical Characteristics at V1-16 = 12V, TA = 25°C as measured in application circuit
PARAMETER CONDITIONS MIN TYP MAX UNITS
Current Consumption
" 12 - O 36 mA
Video Signal
V1 Input Voltage Range 1 7 Vp-p
la Input Current During Sync Pulse 100 MA
Noise Gating (Pin 9)
V9-16 Input Voltage (Peak Value) 0.7 V
lg In'put Current (Peak Value) 0.03 10 mA
Flyback Pulse (Pin 5)
V546 Input Voltage (Peak Value) tl V
ls Input Current (Peak Value) J05 1 mA
R5-16 Input Resistance 400 n
t5 Pulse Duration at 15.625 Hz 10 #5
Composite Sync Pulses (Positive: Pin 7)
V7-16 Output Voltage 10 Vp-p
Output Resistance
R7-16 At Leading Edge of Pulse (Emitter 50 n
Follower) '
R716 At Trailing Edge 2.2 Hz
R7-16 (ext) Additional External Load Resistance 2 k9
Driver Pulse (Pin 2)
V216 Output Voltage 10 Vp-p
I2 Average Output Current 20 mA
12 Peak Output Current 200 mA
t2 Output Pulte Duration When 12 32 . ps
Synchronized
to tot Permissible Delay Between Leading Edge 0 15 us
of Output Pu1se and Flyback Pulse at ts = 12ps
V1-16 Supply Voltage at Which Output Pulses 4 V
are Obtained
Oscillator
fo Frequency; Free Running R1516 = 3.3 kSZ,(Note1) 15,625 He
A10 Spread of Frequency at Nominal Values t5 %
fo of Peripheral Components
Afo Frequency Change When Decreasing the 10 %
F",'? Supply Down to Minimun 4V
Ma 6Vp Influence of Supply Voltage on Frequency 5 %
T, Tw,,,, at Vp = 12V
6fo/6t15 Frequency Comrol Sensitivity 16.5 Hz/pA
Control Loop I (Between Sync Pulse
and oscillator)
V12-16 Control Voltage Range 0.8 5.5 V
Control Current (Peak Values)
I12M V10-16>4,5V.V6-16> 1.5V " mA
I12M V10-16<2V,V6-16>1.5V t6 mA
SOZGVSJJOZSVEJ.
Electrical Characteristics (Continued)
PARAMETER CONDITIONS MIN TYP MAX UNITS
TBA920ITBA920$
Loop Gain of APC System
Q Time Coincidence Between Sync Pulse 1 KHz/ps
At and Flyback Pulse or V10»16> 4.5V
A_tf No Time Coincidence or V10-16 < 2V . 3 kHz/ps
m Catching and Holding Range (Note 2) tl kHz
t Pull~in Time Af/fo = 23% (Af = 470 Hz) 20 ms
t Suintctvover From Large Control 20 ms
Sensitivity to Small Control Sensitwitv
After Catching
Control Loop II (Between Flyback Pulse
and Oscillator)
td tot Permissible Delay Between Leading Edge 0 15 us
of Output Pulse (Pin 2) and Leading Edge
of Flyback Pulse
AL Static Control Error (Note 3) ths %
overall Phase Relation
t Phase Relation Between Leading Edge of (Note 4) 4.9 Ms
Sync Pulse and Middle of Flyback Pulse
iAti Tolerance of Phase Relation (Note 5) 1 us
Af Spread of Frequency at Nominal Values of
T/ Peripheral Components
TBA92O tii %
TBA92OS t2 %
V3-16 Voltage tg = 12ps I 6 V
V346 t1 = 32ps 8 V
I3 Input Current 2 . pA
Time Constant Switch Voltage on Pin 10
V10-16 For Internal R11 = 1509 4.5 V
V1046 FtarinternalR11u--2kn 2 V
Note t: The oscillator frequency can be changed for other TV standards by an appropriate value of C1446.
Note 2: Adjustable with R1 2-15.
Note 3: The control error is the remaining error in reference to the nominal phase position between leading edge of the sync pulse and the middle
of the flyback pulse caused by a variation in delay of the line output stage.
Note 4: This phase relation assumes a luminance delay line with a delay of 500 ns between the input of the sync separator and the drive to the
picture tube. If the sync separator is inserted after the luminance delay line or if there is no delay line at all (black-and-white sets), then the phase
relation is achieved by C5-16 = 560 pF.
Note s.. The adjustment of the overail phase relation and consequently the leading edge of the output pulse at pin 2 occurs automatically by the
control loop It or by applying a tit: voltage to pin 3.
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
corp/docs/irwestor_relations/Pr_09_23_201 1_national_semiconductor.html
This file is the datasheet for the following electronic components:
TBA920 - product/tba920?HQS=TI-nu|I-nu|I-dscatalog-df-pf-nuII-wwe
TBA920S - product/tba9203?HQS=T|-nu|l-null-dscatalog-df—pf—nuII-wwe
