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參數(shù)資料
| 型號(hào)： | ADC14071CIVBH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 14-Bit, 7 MSPS, 380 mW A/D Converter |
| 中文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | TQFP-48 |
| 文件頁(yè)數(shù)： | 4/18頁(yè) |
| 文件大?。?/td> | 427K |
| 代理商： | ADC14071CIVBH |
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Pin Descriptions and Equivalent Circuits
(Continued)
Pin No.
DIGITAL POWER
Symbol
Equivalent Circuit
Description
17
V
D
Positive digital supply pin. This pin should be connected to
the same clean, quiet +5V source as is V
A
and bypassed to
DGND with a 0.1 μF monolithic capacitor in parallel with a
10 μF capacitor, both located within 1 cm of the power pin.
The ground return for the digital supply. AGND and DGND
should be connected together directly beneath the
ADC14071 package. See Section 5 (Layout and Grounding)
for more details.
Positive digital supply pin for the ADC14071’s output drivers.
This pin should be connected to a voltage source of +3 to
+5V and bypassed to DR GND with a 0.1 μF monolithic
capacitor. If the supply for this pin is different from the
supply used for V
A
and V
D
, it should also be bypassed with
a 10 μF tantalum capacitor and never exceed the voltage on
V
D
. All bypass capacitors should be located within 1 cm of
the supply pin.
The ground return for the digital supply for the ADC14071’s
output drivers. These pins should be connected to the
system digital ground, but not be connected in close
proximity to the ADC14071’s DGND or AGND pins. See
Section 5 (Layout and Grounding) for more details.
16
DGND
31
DR V
D
24, 30,
37
DR GND
NC
18, 38,
39, 40,
44, 46,
48
NC
All pins marked NC (no connect) should not be connected to
any potential (or to ground). Allow these pins to float.
A
www.national.com
4
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