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參數(shù)資料
| 型號(hào)： | HI1178 |
| 廠商： | Intersil Corporation |
| 英文描述： | Triple 8-Bit, 40 MSPS, RGB, 3-Channel D/A Converter |
| 中文描述： | 三8位，40 MSPS的，的RGB，3通道D / A轉(zhuǎn)換 |
| 文件頁(yè)數(shù)： | 10/11頁(yè) |
| 文件大?。?/td> | 90K |
| 代理商： | HI1178 |
10-1109
Notes On Operation
How to select the output resistance
The HI1178 is a current-output D/A converter. To obtain
the output voltage, connect the resistance to IO pin (RO,
GO, BO). For specifications we have:
Calculate the output resistance value from the relation of
V
FS
= I
FS
X R. Also, 16 times resistance of the output
resistance is connected to reference current pin I
REF
. In
some cases, however, this turns out to be a value that
does not actually exist. In such a case a value close to it
can be used as a substitute. Here please note that V
FS
becomes V
FS
= V
REF
X 16R/R'. R is the resistance con-
nected to IO while R' is connected to I
REF
. Increasing the
resistance value can curb power consumption. On the
other hand glitch energy and data settling time will
inversely increase. Set the most suitable value according
to the desired application.
Phase Relation Between Data and Clock
To obtain the expected performance as a D/A converter, it
is necessary to set properly the phase relation between
data and clock applied from the exterior. Be sure to satisfy
the provisions of the set up time (t
S
) and hold time (t
H
) as
stipulated in the Electrical Characteristics.
V
DD
, V
SS
To reduce noise effects separate analog and digital
systems in the device periphery. For V
DD
pins, both digital
and analog, bypass respective GNDs by using a ceramic
capacitor of 0.1
μ
F, as close as possible to the pin.
Application Circuit
FIGURE 11.
DV
DD
AV
DD
36
24
23
22
21
20
19
18
17
(
13 14 15 16
1
2
3
4
5
6
7
8
9
10
11
12
38
39
40
41
42
43
44
45
46
47
37
48
35
DV
SS
CLOCK IN
DV
SS
0.1
μ
AV
SS
AV
SS
(BCK)
(GCK)
(RCK)
(
(LSB)
1K
AV
SS
3.3K
2V
(
(MSB)
G(GREEN)IN
R(RED)IN
B(BLUE)IN
AV
SS
AV
DD
200
R(RED)OUT
G(GREEN)OUT
200
AV
SS
200
B(BLUE)OUT
0.1
μ
(LSB)
34
31
30
29
28
27
26
25
33
32
HI1178
Output Full Scale Voltage V
FS
= less than 2.0 [V]
Output Full Scale Current I
FS
= less than 15 [mA]
HI1178
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| HI1178_05 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple 8-Bit, 40MSPS, RGB, 3-Channel D/A Converter |
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| HI1179-EV | 制造商:Intersil Corporation 功能描述:EVAL BD FOR HI1179 - Bulk |
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