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| 型号： | TLC5733AIPM |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 3-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP64 |
| 封装： | PLASTIC, QFP-64 |
| 文件页数： | 2/23页 |
| 文件大小： | 340K |
| 代理商： | TLC5733AIPM |
TLC5733A
20 MSPS 3CHANNEL ANALOGTODIGITAL CONVERTER
WITH HIGHPRECISION CLAMP
SLAS104B JULY 1995 REVISED FEBRUARY 2001
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
summary of device operation with COMPOSITE SYNC (continued)
B
COMPOSITE
SYNC
Noise Gate 1
Noise Gate 2
Figure 2. Proper COMPOSITE SYNC Timing
Table 3. Sync and Clamp Timing for NTSC and PAL With CLK = 4 fsc
TIME
NTSC
fsc = 3.58 MHz
PAL
fsc = 4.43 MHz
TIME
INTERVAL
NO. OF
CLOCKS
TIME
(
s)
NO. OF
CLOCKS
TIME
(
s)
A
867
60.6
1075
60.7
B
43
3
61
3.5
C
58
4.05
58
3.27
D
6
0.42
6
0.34
E
76
5.3
93
5.25
F
54
3.77
84
4.74
using an external clamp pulse
When CLPEN is taken low, EXTCLP accepts an externally generated active-high clamp pulse. This pulse must
occur within the horizontal-blanking interval back porch. CLPEN low inhibits the internal counters and no internal
clamp pulse is generated.
output digital code (for each channel of ADC)
Table 4. Input Signal Versus Digital Output Code
INPUT SIGNAL
STEP
DIGITAL OUTPUT CODE
INPUT SIGNAL
VOLTAGE
STEP
MSB
LSB
Vref(RT)
255
1
128
1
00
0
127
0
11
1
Vref(RB)
0
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