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參數(shù)資料
| 型號： | DAC7552IRGT |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 12-BIT, DUAL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 12位雙，超低毛刺，電壓輸出數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大小： | 862K |
| 代理商： | DAC7552IRGT |
www.ti.com
3-Wire Serial Interface
The DAC7552 digital interface is a standard 3-wire SPI/QSPI/Microwire/DSP-compatible interface.
POWER-DOWN MODE
In power-down mode, the DAC outputs are programmed to one of three output impedances, 1 k
, 100 k
, or
floating.
DAC7552
SLAS442B–JANUARY 2005–REVISED JUNE 2005
TYPICAL CHARACTERISTICS (continued)
Table 1. Serial Interface Programming
CONTROL
DB14
0
0
1
DATA BITS
DB11-DB10
data
data
data
DAC(s)
FUNCTION
DB15
0
0
0
DB13
0
1
0
DB12
0
0
0
A
B
A
Single Channel Store. The input register of channel A is updated.
Single Channel Store. The input register of channel B is updated.
Single Channel Update. The input and DAC registers of channel A are
updated.
Single Channel Update. The input and DAC registers of channel A are
updated and the DAC register of channel B is updated with input register data.
Single Channel Update. The input and DAC registers of channel B are
updated.
Single Channel Update. The input and DAC registers of channel B are
updated and the DAC register of channel A is updated with input register data.
All Channel Update. The input and DAC registers of channels A and B are
updated.
All Channel DAC Update. The DAC register of channels A and B are updated
with input register data.
0
1
1
0
data
B
1
0
0
0
data
A
1
0
1
0
data
B
1
1
0
0
data
A–B
1
1
1
0
data
A–B
Table 2. Power-Down Mode Control
EXTENDED CONTROL
DB14
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
DATA BITS
DB10
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FUNCTION
DB15
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
DB13
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DB12
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DB11
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DB9-DB0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PWD Hi-Z (all channels)
PWD 1 k
(all channels)
PWD 100 k
(all channels)
PWD Hi-Z (all channels)
PWD Hi-Z (selected channel = A)
PWD 1 k
(selected channel = A)
PWD 100 k
(selected channel = A)
PWD Hi-Z (selected channel = A)
PWD Hi-Z (selected channel = B)
PWD 1 k
(selected channel = B)
PWD 100 k
(selected channel = B)
PWD Hi-Z (selected channel = B)
PWD Hi-Z (all channels)
PWD 1 k
(all channels)
PWD 100 k
(all channels)
PWD Hi-Z (all channels)
14
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