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| 型号： | DAC8820ICDBG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.5 us SETTLING TIME, 16-BIT DAC, PDSO28 |
| 封装： | GREEN, PLASTIC, SSOP-28 |
| 文件页数： | 5/22页 |
| 文件大小： | 1216K |
| 代理商： | DAC8820ICDBG4 |
www.ti.com
OPA277
V
DD
V
DD
+15 V
U2
GND
R
OFS
R
FB
V
OUT
I
OUT
V
REF
V+
15 V
V
U1
DAC8820
t
WR
t
DS
t
DH
t
LWD
t
LDAC
t
RST
WR
DATA
LDAC
RST
SBAS358D – AUGUST 2005 – REVISED FEBRUARY 2008
Figure 39. Voltage Output Configuration
Figure 40. DAC8820 Timing Diagram
Table 1. Function of Control Inputs
CONTROL INPUTS
RST
WR
LDAC
REGISTER OPERATION
Asynchronous operation. The DAC register is set to zero code, resulting in the DAC output being set
0
X
to 0 V. The DAC input register contents are not reset by the RST signal.
1
0
Load the input register with all 16 data bits.
1
Load the DAC register with the contents of the input register.
1
0
1
The input and DAC register are transparent.
LDAC and WR are tied together and programmed as a pulse. The 16 data bits are loaded into the
1
input register on the falling edge of the pulse and then loaded into the DAC register on the rising
edge of the pulse.
1
0
No register operation.
Copyright 2005–2008, Texas Instruments Incorporated
13
Product Folder Link(s): DAC8820
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