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TEA2028B 数据表(PDF) 5 Page - STMicroelectronics

部件名 TEA2028B
功能描述  COLOR TV SCANNING AND POWER SUPPLY PROCESSOR
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TEA2028B 数据表(HTML) 5 Page - STMicroelectronics

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ELECTRICAL OPERATING CHARACTERISTICS (continued)
Tamb =25
oC, VCC = 12V (unless otherwise noted) Pulse duration at 50% of the ampifier
Symbol
Parameter
Min.
Typ.
Max.
Unit
FRAME SYNCHRO ADJUSTMENT (Pin 20) (V20 = 2.5V)
I20H
High Output Current (V27 = 12V)
7.2
µA
I20L
Low Output Current (V27 = 0V)
– 2.8
µA
VCO (Pins 17-18 and 19)
Frequency control range after line divider (ceramic resonator : 503kHz)
15.30 to
16.10
kHz
PHASE COMPARATOR
ϕ 1 (Pin 22)
Output Current Low Loop Gain
± 0.35
± 0.50
± 0.65
mA
Output Current High Loop Gain
± 1
± 1.5
± 2mA
Window Pulse Width
7
10
13
µs
VCR SWITCHING (Pin 23)
Threshold Voltage VCR Operating
1.7
2.2
2.7
V
I23
Input Current (V23 =0, VCC = 12V)
-0.030
-0.25
-1
mA
VIDEO IDENTIFICATION (Pin 24)
V24
Output Saturation Voltage (without video signal, I24 = 3mA)
0.2
0.6
V
V24
Output Voltage (with 60Hz video signal, I24 = 2.5mA)
5
6.5
7.5
V
V24
Output Voltage (with 50Hz video signal, I24 =10
µA)
11.0
11.5
V
VIDEO IDENTIFICATION (Pin 25)
I25
Output Current (charging the capacitor)
0.5
0.75
1
mA
t25
Identification Time (charging the capacitor)
1.3
1.7
2.2
µs
V25
Threshold (voltage changing from lower to higher value)
4
4.5
5
V
LHYS
Hysteresis
350
mV
H-RAMP GENERATOR (Pin 13)
Ich13
Charge Current
185
200
215
µA
VI13
Base Voltage of Saw-tooth
0.5
V
Idis13
Discharge Current
3.5
7.0
mA
SUPER SANDCASTLE (Pin 11)
VB11
Burst key pulse level Output Voltage (I11 = – 5mA)
9
V
VL11
Line Blanking Pulse Level Output Voltage (I11 = – 5mA)
4
4.5
5
V
VBT11
Frame Blanking Pulse Level Output Voltage (and frame out of function)
(I11 = – 5mA)
2
2.5
3
V
SUPER SANDCASTLE
TB11
Delay between middle of synch pulse (Pin 27) and leading edge of burst
key pulse
2.3
3.0
µs
Duration of burst key pulse
3.7
4
5
TO11
Delay Between SSC Cutting Level at Pin 12 and Line Blanking Pulse
0.35
Frame Blanking Time (start with reset of frame divider)
21
Line
POSITIVE LINE FLY BACK INPUT (Pin 12)
Delay between middle of synch pulse and middle of line retrace
2.1
2.6
3.1
µs
Threshold for SMPS Safety
1.1
V
VbI12
Threshold for Blanking
0.3
V
Vϕ12
Threshold for PLL2
3
V
I12
Input Current – 0.4 V < V12 <VbI12
-20
µA
I12
Input Current VbI12 < V12 <V
ϕ12
-10
µA
I12
Input Current Vϕ12 <V12 <VCC
01
µA
TEA2028B
5/9


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