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參數(shù)資料
| 型號： | XRD8799AIQ |
| 廠商： | EXAR CORP |
| 元件分類： | ADC |
| 英文描述： | LOW POWER, 2 MSPS, 10-BIT, A/D CONVERTER WITH 8-CHANNEL MUX |
| 中文描述： | 8-CH 10-BIT RESISTANCE LADDER ADC, PARALLEL ACCESS, PQFP44 |
| 封裝： | 10 X 10 MM, PLASTIC, QFP-44 |
| 文件頁數(shù)： | 16/23頁 |
| 文件大小： | 408K |
| 代理商： | XRD8799AIQ |
xr
XRD8799
LOW POWER, 2 MSPS, 10-BIT, A/D CONVERTER WITH 8-CHANNEL MUX
REV. 1.00
16
F
IGURE
19.
±
10V A
NALOG
I
NPUT
For R = 5k use Beckman Instruments #694-3-R10k resistor array or equivalent.
N
OTE
:
High R values affect the input BW of ADC due to the (R * C
IN
of ADC) time constant. Therefore, for different applica-
tions the R value needs to be selected as a trade-off between A
IN
settling time and power dissipation.
F
IGURE
20. A/D L
ADDER
AND
A
IN
WITH
P
ROGRAMMED
C
ONTROL
(
OF
V
REF(+)
, V
REF(-)
, 1/4
AND
3/4 TAP.)
V
REF(+)
V
IN
+
-
2R
R
A
IN1
V
REF(-)
+10V
+5V
+5V
DB0
AGND
AV
DD
2R
1 of 8
A
IN8
V
IN
+
-
@ Power Down write values to DAC 3, 2, 1 = DAC 4 to minimize power consumption.
Only A
IN
and Ladder detail shown.
DAC4
DAC3
DAC2
DAC1
XRD8799
V
REF(+)
3/4
1/4
V
REF(+)
V
REF1(-)
DAC0
DAC7
+
-
A
IN8
A
IN1
MP7641
MP7226
V
IN
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