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參數(shù)資料
| 型號： | AS1533-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 4-CH, ADC, 300ksps; Package Type: TSSOP-16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 22/28頁 |
| 文件大?。?/td> | 920K |
| 代理商： | AS1533-T |
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www.austriamicrosystems.com
Revision 1.00
22 - 28
AS1532/AS1533
Data Sheet
- Detailed Description
Figure 32. Reference Adjust Circuit
External Reference
An external reference can be connected directly at pin REF. To use the external reference, the internal buffer must be
disabled by connecting pin REFADJ to pin VDD. The input resistance is typically 15k
Ω
.
During conversion, an external reference at pin REF must deliver up to 350μA DC load current and have 10
Ω
or less
output impedance. If the reference has a higher output impedance or is noisy, bypass it with a 4.7μF capacitor placed
as close to pin REF as possible.
Note:
Using the REFADJ input makes buffering the external reference unnecessary.
C
LOAD
0.01μF
GND
100k
Ω
DGND
24k
Ω
510k
Ω
+3.3V
12
REFADJ
AS1532/
AS1533
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|---|---|
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