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参数资料
| 型号： | TA1270BFG |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封装： | 10 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-48 |
| 文件页数： | 18/39页 |
| 文件大小： | 1491K |
| 代理商： | TA1270BFG |
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TA1270BFG
2005-08-18
25
Chroma block
TEST CONDITION
SUB ADDRESS & DATA
SW MODE
NOTE
CHARACTERISTIC
00
01
02
03
05
SW1
―
TEST METHOD
C1
ACC Characteristics
80
B
―
(1) Input 3.58-NTSC signal 1 rainbow signal (Burst : chroma = 1 : 1) to the
chroma input (Pin 6).
(2) Measure the amplitude, F10, F30, F300, and F600, of the B-Y output (Pin
47) when the amplitude of the chroma input signal is set to 10, 30, 300,
and 600 mVp-p.
(3) Calculate A = F30 / F300.
C2
APC Frequency
Control Sensitivity
80
81
or
83
or
84
80
or
81
B
―
(1) Connect the chroma input pin (Pin 6) to GND via a capacitor.
(2) Change the sub address (03) data to (81h), (83h), and (84h) and perform
the following for each.
(3) Connect external power source (V4) to the APC filter (Pin 4).
(4) Vary the voltage of external power source (V4) and measure the Fsc
output (Pin 44) using a frequency counter.
(5) Measure the free-run sensitivity β for the (V4 + 100 mV) near fsc.
(3.58NTSC ; β3, 4.43 ; PAL ; 4β ; M-PAL ; βM)
C3
SECAM ID Output DC Level
80
81
or
83
or
84
80
B
―
(1) Connect the chroma input pin (Pin 6) to GND via a capacitor.
(2) Change the sub address (03) data to (81h), (83h), and (84h) and
measure the output DC level of the SECAM ID (Pin 46).
3.58 NTSC mode (81h) ; SEN
4.43 PAL mode (83h)
; SEP
SECAM mode (84h)
; SES
C4
NTSC Ident Sensitivity
80
or
81
80
A
―
(1) Input 3.58-NTSC signal 1 rainbow signal (Burst : chroma = 1 : 1) to the
chroma input (Pin 6).
(2) While monitoring READ BUS “COLOR“, perform the following with BUS
“P / N-ID“ data = 1 and 0.
(3) Increase the amplitude of the input signal from 0 mVp-p and measure the
amplitude at mode change to 3.58 NTSC mode.(Normal (1) ; vNCL, High
(0) ; vNCH)
(4) Decrease the amplitude of the input signal from 100 mVp-p and measure
the amplitude at mode change to 3.58 NTSC mode.
(Normal (1) ; vNBL, High (0) ; vNBH)
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