參數(shù)資料
型號(hào): TA8795BF
元件分類: 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
文件頁數(shù): 22/45頁
文件大?。?/td> 1139K
代理商: TA8795BF
TA8795BF
2001-01-15 29/45
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. No signal is input to pin 21.
2. Fix the 3N / 4N X’tal oscillation externally.
3. Apply external DC voltage to pin 27 (APC filter) and
check the free-running frequency.
C10
VCXO adjustment
sensitivity (3N /
4N)
β3N
β4N
Hz /
mV
1.00
Open
B
/
A
/
B
C
B
Open
B
/
A
V27 = fc±25mV fo sensitivity
C11
Color difference
output (PAL / 3N)
eP43
eP44
eP45
e3N43
e3N44
e3N45
Vp-p
0.60
0.21
0.35
0.66
0.22
0.39
0.91
0.31
0.51
1.00
0.33
0.57
1.30
0.43
0.70
1.43
0.46
0.78
C12
Relative amplitude
(PAL / 3N)
PR / PB
PG / PB
NR / NB
NG / NB
0.46
0.24
0.46
0.24
0.56
0.34
0.56
0.34
0.66
0.44
0.66
0.44
Open
A
ON
Vary
A
B
Open Open Open OFF Open
1. Input burst and chroma signals with the same
amplitude of 100mVp-p (rainbow color bar signal) to
pin 21 (PAL / 3NTSC).
2. Measure the B / G / R-Y color difference amplitudes
for pins 43, 44, and 45.
3. Check the color difference amplitudes of each pin.
Calculate the R-Y / B-Y and G-Y / B-Y amplitude
ratios.
Note: In PAL mode, adjust the delay line using a
Philips pattern signal. Measure the PAL color
difference output using the PAL rainbow signal
in the video input.
β
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