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參數(shù)資料
| 型號(hào)： | AS1505-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | DAC |
| 英文描述： | Octal 8-bit Zero-Scale Setting; Package Type: SOIC(150mil)-16 |
| 中文描述： | 八進(jìn)制8位可編程低功耗DAC的具有關(guān)斷和中間刻度重置 |
| 封裝： | SOIC(150mil)-16 |
| 文件頁數(shù)： | 8/17頁 |
| 文件大?。?/td> | 471K |
| 代理商： | AS1505-T |
www.austriamicrosystems.com
Revision 1.0
8 - 17
AS1504/AS1505
Data Sheet
- Detailed Description
8 Detailed Description
The AS1504/AS1505 contain eight DAC channels of programmable voltage output adjustment capability. OUT
x
can be
individually changed in random sequence. The fast serial-data loading (33MHz) allows all eight DACs to be quickly
loaded (3ms typ; 12 x 8 x 30ns).
Figure 11. Detailed Block Diagram
Each output voltage can be programmed by clocking an 11-bit serial data word into pin SDI
(see Figure 12)
. The format
of this data word is three address bits (MSB first, followed by eight data bits
(see Table 5)
).
To determine which of the DAC registers is to receive the serial register data (bits B7:B0) the DACx address is
decoded as:
DACx = A2 x 4 + A1 x 2 + A0 + 1
(EQ 1)
Figure 12. Timing Diagram
OUT1
OUT8
AS1504 Only
RSN
AS1505 Only
V
REFL
SDI
CLK
CSN
AS1504/
AS1505
SHDNN
V
REFH
Address
Decode
EN
Serial
Register
D10
D9
D8
D
8
GND
DAC1
Register
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
DAC8
Register
D7
D6
D5
D4
D3
D2
D1
D0
R
R
DAC1
DAC1
8
8
SDI
CLK
CSN
1
0
1
0
1
0
+5V
0V
DAC Register Load
A2
A0
D7
D6
D5
D4
D3
D2
D1
DO
A1
V
OUT
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