參數(shù)資料
型號(hào)： TA1275BFNG
廠商： Toshiba Corporation
英文描述： Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 2.8 to 3.2; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35
中文描述： SECAM制式解調(diào)器處理器
文件頁(yè)數(shù)： 16/21頁(yè)
文件大?。?/td> 1249K
代理商： TA1275BFNG
TA1275BFNG
2005-03-14
16
Note
Item
Test Condition
10
Killer ON/OFF Level
(1) : Input a 75% color bar (200 mV
p-p
at R ID) into Pin 20.
(2) : Decreasing the input amplitude, measure the amplitude at which
demodulated outputs disappear at Pin 9 and Pin 11, that is, "e
SK
".
(3) : Increasing the input amplitude from 0 mV
p-p
, measure the amplitude at which
demodulated outputs appear at Pin 9 and Pin 11, that is, "e
SC
".
11
Black Level Offset
(1) : Input a 200 mV
p-p
non-modulated chrome
signal into Pin 20.
(2) : Pin 10 and Pin 12 are opened.
(3) : Measure the difference between picture period and
blanking period at Pin 9 / Pin 11, that is, "E
rR
" /
"E
rB
".
12
ID Voltage
(1) : Connect the external power supply to Pin 13, as shown in the figure.
(2) : Apply 4.0 V to Pin 13, and measure the Pin 6 voltage, that is, “V
6color
”.
(3) : Apply 2.0 V to Pin 13, and measure the Pin 6 voltage, that is, “V
6B / W
”.
(1) : Connect the external power supply to Pin 13, as shown in the figure.
13
ID Current
(2) : Apply 5.0 V to Pin 13, and measure the Pin 6 current, that is, “I
6strongSE
”.
(3) : Apply 4.0 V to Pin 13, and measure the Pin 6 current, that is, “I
6SE
”.
(4) : Apply 2.0 V to Pin 13, and measure the Pin 6 current, that is, “I
6B / W
”.
(1) : Input a 200 mV
p-p
, 15 kHz sine wave into Pin 14 and Pin 16.
14
System SW Threshold Level
(2) : No input on Pin 20.
(3) : Increasing the Pin 6 voltage from 0 V, measure the voltage at which the 15 kHz
sine wave appears at Pin 9 and Pin 11, that is, "V
6PIN
".
(4) : Decreasing the Pin 6 voltage from 4 V, measure the voltage at which the 15 kHz
sine wave disappears at Pin 9 and Pin 11, that is, "V
6S
".
15
Color Difference Output DC
Level
(1) : No input on Pin 20.
(2) : Measure the DC voltage on Pin 9 / Pin 11 when Pin 6 is 4 V, that is, "V
9PIN
" /
"V
11PIN
".
(3) : Measure the DC voltage on Pin 9 / Pin 11 when Pin 6 is 0 V, that is, "V
9S
" /
"V
11S
".
16
R-Y B-Y Black Level Control
Characteristics
(1) : Input a 75% color bar (200 mV
p-p
at R ID) into Pin 20.
(2) : Measure the difference between the picture period and the blanking period at Pin
9 when Pin 10 is 5 V / 0 V, that is, E
rR+
/ E
rR
.
(3) : Measure the difference between the picture period and the blanking period at Pin
11 when Pin 12 is 5 V / 0 V, that is, E
rB+
/ E
rB
.
(4) : Calculate : "
E
rR+
" = E
rR+
E
rR
"
E
rR
" = E
rR
E
rR
"
E
rB+
" = E
rB+
E
rB
"
E
rB
" = E
rB
E
rB
6
V
-
+
Voltmeter
Ammeter
4
6
56
TA1275BFNG
A-
+
TB1309FG
15k
0.01μF
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