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參數(shù)資料
| 型號： | SPT5240 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 10-bit, 400 MWPS Current Output Digital-to-Analog Converter |
| 中文描述： | 10位，400 MWPS電流輸出數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 102K |
| 代理商： | SPT5240 |
REV. 1 June 2003
9
SPT5240
DATA SHEET
A
B
C
D
E
F
J
K
L
G
I
INCHES
MILLIMETERS
Min
8.80
6.90
8.80
6.90
0.80 BSC
0.30
1.35
0.05
0.95
Symbol
A
B
C
D
E
F
G
H
I
J
K
L
Min
0.346
0.272
0.346
0.272
Max
0.362
0.280
0.362
0.280
Max
9.20
7.10
9.20
7.10
0.031 Typ
0.012
0.053
0.002
0.037
0.016
0.057
0.006
0.041
0.007
7
°
0.030
0.40
1.45
0.15
1.05
0.17
7
°
0.75
0
°
0
°
0.020
0.50
H
Analog Outputs
The SPT5240 provides differential current outputs which
provide an output level based on the value of R
SET
at
maximum output code (see Figure 3). The required value of
R
SET
may be calculated using the formulas:
LSB = I
FS
/1023
Then:
R
SET
=
1.111 – (1000 LSB)
4 LSB
Where I
FS
is the desired full-scale current output.
Each output requires a minimum 5
load to analog ground.
The typical circuit utilizes 50
loads to develop voltage for
the output transformer (refer to EB5240 data sheet).
X indicates either data state.
Package Dimensions
LQFP-32
Figure 3: R
SET
vs. I
OUT
Table 1: Input Data Format
Input Code D9 – D0
Analog Output
IO
N
IO
P
0000000000
F
S
0
1111111111
0
F
S
Sleep XXXXXXXXXX
0
0
35
20
5
I
O
10
0
15
25
30
60.3
11.2
R
SET
Value (k
)
R
SET
Steps = 2.75k
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