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參數資料
| 型號： | ADV7122 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 80 MHz, Triple 10-Bit Video DACs(80MHz,三通道10位視頻D/A轉換器) |
| 中文描述： | 80兆赫，三路10位視頻數模轉換器（為80MHz，三通道10位視頻的D / A轉換器） |
| 文件頁數： | 4/12頁 |
| 文件大小： | 166K |
| 代理商： | ADV7122 |
ADV7121/ADV7122
TIMNGCHARACTERISTICS
1
(V
AA
= +5 V
6
5%; V
REF
= +1.235 V; R
L
= 37.5
V
, C
L
= 10 pF; R
SET
= 560
V
.
All Specifications T
MN
to T
MAX2
unless otherwse noted.)
–4–
REV. B
Parameter
80 MHz Version
50 MHz Version
30 MHz Version
Units
Conditions/Comments
fmax
t
1
t
2
t
3
t
4
t
5
t
6
80
3
2
12.5
4
4
30
20
3
12
50
6
2
20
7
7
30
20
3
15
30
8
2
33.3
9
9
30
20
3
15
MHz max
ns min
ns min
ns min
ns min
ns min
ns max
ns typ
ns max
ns typ
Clock Rate
Data & Control Setup T ime
Data & Control Hold T ime
Clock Cycle T ime
Clock Pulse Width High T ime
Clock Pulse Width Low T ime
Analog Output Delay
t
7
t
83
Analog Output Rise/Fall T ime
Analog Output T ransition T ime
NOT ES
1
T T L input values are 0 to 3 volts, with input rise/fall times
≤
3 ns, measured between the 10% and 90% points. T iming reference points at 50% for inputs and
outputs. See timing notes in Figure 1.
2
T emperature range (T
MIN
to T
MAX
): 0
°
C to +70
°
C.
3
Sample tested at +25
°
C to ensure compliance.
Specifications subject to change without notice.
CLOCK
DATA
DIGITAL INPUTS
(R0–R9, G0–G9, B0–B9;
SYNC, BLANK)
t
4
t
5
t
6
t
2
t
1
t
8
t
7
ANALOG OUTPUTS
(IOR, IOG, IOB)
t
3
1. OUTPUT DELAY (t
) MEASURED FROM THE 50% POINT OF THE
RISING EDGE OF THE CLOCK TO THE 50% POINT OF
FULL-SCALE TRANSITION.
2. TRANSITION TIME (t
) MEASURED FROM THE 50% POINT OF
FULL-SCALE TRANSITION TO WITHIN 2% OF THE FINAL OUTPUT
VALUE.
3. OUTPUT RISE/FALL TIME (t
) MEASURED BETWEEN THE 10%
AND 90% POINTS OF FULL-SCALE TRANSITION.
4 SYNC AND BLANK DIGITAL INPUTS ARE NOT PROVIDED ON
Figure 1. Video Input/Output Timing
NOTES
RE COMME NDE D OPE RAT ING CONDIT IONS
Parameter
Symbol
Min
T yp
Max
Units
Power Supply
Ambient Operating
T emperature
Output Load
Reference Voltage
V
AA
4.75
5.00
5.25
Volts
T
A
R
L
V
REF
0
+70
°
C
Volts
37.5
1.235
1.14
1.26
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