參數(shù)資料
型號(hào)： ISL5929IN
廠商： INTERSIL CORP
元件分類(lèi)： DAC
英文描述： Dual 14-Bit, +3.3V, 130/210MSPS, CommLink TM High Speed D/A Converter
中文描述： DUAL, PARALLEL, WORD INPUT LOADING, 14-BIT DAC, PQFP48
封裝： 7 X 7 MM, PLASTIC, MS-026-BBC, LQFP-48
文件頁(yè)數(shù)： 12/13頁(yè)
文件大?。?/td> 844K
代理商： ISL5929IN
12
R
A
=R
B
=50
, R
DIFF
=100
, assuming R
LOAD
=50
. The
performance of Figure 13 and Figure 14 is basically the
same, however leaving the center tap of Figure 14
fl
oating
allows the circuit to
fi
nd a more balanced virtual ground,
theoretically improving the even order harmonic rejection,
but likely reducing the signal swing available due to the
output voltage compliance range limitations.
Propagation Delay
The converter requires two clock rising edges for data to be
represented at the output. Each rising edge of the clock
captures the present data word and outputs the previous
data. The propagation delay is therefore 1/CLK, plus <2ns of
processing. See Figure 15.
Test Service
Intersil offers customer-speci
fi
c testing of CommLink
converters with a service called Testdrive. To submit a
request,
fi
ll out the Testdrive form at
www.intersil.com/testdrive. Or, send a request to the
technical support center.
R
DIFF
ISL5929
R
LOAD
FIGURE 13. OUTPUT LOADING FOR DATASHEET
MEASUREMENTS
OUTA
OUTB
V
OUT
= (2 x OUTA x R
EQ
)V
1:1
L
OAD SEEN BY THE TRANSFORMER
R
LOAD
REPRESENTS THE
R
EQ
= 0.5 x (R
LOAD
// R
DIFF
)
AT EACH OUTPUT
FIGURE 14. ALTERNATIVE OUTPUT LOADING
ISL5929
OUTA
OUTB
V
OUT
= (2 x OUTA x R
EQ
)V
R
EQ
= 0.5 x (R
LOAD
// R
DIFF
// R
A
), WHERE R
A
=R
B
AT EACH OUTPUT
R
LOAD
R
DIFF
R
A
R
B
LOAD SEEN BY THE TRANSFORMER
R
LOAD
REPRESENTS THE
Timing Diagram
FIGURE 15. PROPAGATION DELAY, SETUP TIME, HOLD TIME AND MINIMUM PULSE WIDTH DIAGRAM
CLK
I
OUT
50%
t
PW1
t
PW2
t
SU
t
HLD
t
SU
t
SU
t
PD
t
HLD
t
HLD
D13-D0
W
0
W
1
W
2
W
3
OUTPUT=W
0
OUTPUT=W
1
t
PD
OUTPUT=W
-1
ISL5929
相關(guān)PDF資料
PDF描述
ISL5929 Dual 14-Bit, +3.3V, 130/210MSPS, CommLink TM High Speed D/A Converter
ISL59292IN Dual 14-Bit, +3.3V, 130/210MSPS, CommLink TM High Speed D/A Converter
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