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SPT5240 Scheda tecnica(PDF) 9 Page - Cadeka Microcircuits LLC.

Il numero della parte SPT5240
Spiegazioni elettronici  10-bit, 400 MWPS Current Output Digital-to-Analog Converter
PDF  10 Pages
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Produttore elettronici  CADEKA [Cadeka Microcircuits LLC.]
Homepage  http://www.cadeka.com
Logo CADEKA - Cadeka Microcircuits LLC.

SPT5240 Scheda tecnica(HTML) 9 Page - Cadeka Microcircuits LLC.

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REV. 1 June 2003
9
SPT5240
DATA SHEET
A
B
C
D
E
F
J
K
L
G
I
INCHES
MILLIMETERS
Symbol
Min
Max
Min
Max
A
0.346
0.362
8.80
9.20
B
0.272
0.280
6.90
7.10
C
0.346
0.362
8.80
9.20
D
0.272
0.280
6.90
7.10
E
0.031 Typ
0.80 BSC
F
0.012
0.016
0.30
0.40
G
0.053
0.057
1.35
1.45
H
0.002
0.006
0.05
0.15
I
0.037
0.041
0.95
1.05
J
0.007
0.17
K0°
7°
0°
7°
L
0.020
0.030
0.50
0.75
H
Analog Outputs
The SPT5240 provides differential current outputs which
provide an output level based on the value of RSET at
maximum output code (see Figure 3). The required value of
RSET may be calculated using the formulas:
LSB = IFS/1023
Then:
RSET = 1.111 – (1000 • LSB)
4 • LSB
Where IFS is the desired full-scale current output.
Each output requires a minimum 5Ω load to analog ground.
The typical circuit utilizes 50Ω loads to develop voltage for
the output transformer (refer to EB5240 data sheet).
X indicates either data state.
Package Dimensions
LQFP-32
Figure 3: RSET vs. IOUT
Table 1: Input Data Format
Input Code D9 – D0
Analog Output
ION
IOP
0000000000
FS
0
1111111111
0
FS
Sleep XXXXXXXXXX
0
0
35
20
5
10
0
15
25
30
60.3
11.2
RSET Value (kΩ)
RSET Steps = 2.75kΩ



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