參數(shù)資料
型號(hào)： TA8795BF
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP60
封裝： 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-60
文件頁(yè)數(shù)： 29/45頁(yè)
文件大小： 1139K
代理商： TA8795BF
TA8795BF
2001-01-15 35/45
TEST CONDITIONS : VCC = 5V, Ta = 25±3°C
SW No. AND VR MODE
No.
PARAMETER
SYMBOL
UNIT
MIN
TYP.
MAX
15
16
18
19
21
24
31
34
38
47
55
TEST METHOD
―
1.50
―
Input to pin 21 (PAL / NTSC) the PAL, 3N, 4N
signals and to pin 24 (SECAM) SECAM and black &
white signals and measure the M1, M2, and M3
voltages at each signal input state.
PAL / SECAM, 4.43MHz NTSC, and 3.58MHz
NTSC modes
C25
M3 output voltage
of interface pin 15
VS3
V
―
0
―
Open
A
Open
A
Open Open Open OFF Open Input to pin 21 (PAL / NTSC) the PAL, 3N, 4N
signals and to pin 24 (SECAM) SECAM and black &
white signals and measure the M1, M2, and M3
voltages at each signal input state.
Black & white 1, black & white 2 modes
*
Note that black & white 1 mode is 4.43MHz
chroma VCO oscillation and black & white 2
mode is 3.58MHz chroma VCO oscillation.
C26
Switch threshold
current
IS1
mA
―
0.55
―
Open
A
Open
C
B
Open Open Open OFF Open
1. Input either PAL or SECAM signal.
2. Input external current to pin 15 and measure the
current when mode changes to black & white.
C27
Switch threshold
current
IS2
mA
―
0.58
―
Open
A
Open
C
B
Open Open Open OFF Open
1. Input SECAM signal.
2. Input external current to pin 38 and measure the
current when mode changes to black & white.
C28 PIP switch check
UV
SP
V
―
1.50
3.00
―
Open
A
Open
A
Open Open Open
―
Open
1. To pin 24, input a 75% standard color bar signal
with an amplitude of 100mVp-p (PAL / NTSC).
2. Apply external voltage to pin 47 (PIP switch)
and measure the pin 47 voltage when pin 43
switches between primary color and color
difference states.
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