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參數(shù)資料
| 型號： | TDA8708AT-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 124K |
| 代理商： | TDA8708AT-T |
June 1994
10
Philips Semiconductors
Product specication
Video analog input interface
TDA8708A
Table 1 Video input selection (CVBS).
Table 2 AGC output current.
Note
1. X = don't care.
2. Mode 2 can only be initialized with successive pulses
on GATE A and GATE B (see Fig.5).
I1
I0
SELECTED INPUT
0
VIN0
0
1
VIN1
1
0
VIN2
1
VIN2
GATE A GATE B
DIGITAL
OUTPUT
IAGC
MODE(2)
1
output
< 255 2.5 A1
output
> 255 IAGCM
1
0X(1)
output
< 248 0 A2
output
> 248 IAGCM
2
1
0
output
< 0
+2.5
A2
0 < output <
248
2.5 A2
output > 248
IAGCM
2
Table 3 CLAMP output current.
Note
1. X = don't care.
Table 4 OF input coding.
Note
1. Use C
≥ 10 pF to DGND.
GATE A GATE B
DIGITAL
OUTPUT
ICLAMP
MODE
1
output
< 0ICLAMPM
1
output
> 0
2.5 A1
X(1)
0X(1)
0
A2
0
1
output
< 64
+50
A2
64 < output
50 A2
OF
D0 TO D7
0
active, two's complement
1
high impedance
open circuit(1)
active, binary
Table 5 Output coding and input voltage (typical values).
STEP
VADCIN
BINARY OUTPUTS
TWO'S COMPLEMENT
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
Underow
0000000010000000
0VCCA 2.41 V
0000000010000000
1
0000000110000001
.
................
.
................
254
1111111001111110
255
VCCA 1.41 V
1111111101111111
Overow
1111111101111111
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