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參數(shù)資料
| 型號： | TLC7225IDWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24 |
| 封裝： | 0.300 INCH, GREEN, SOIC-24 |
| 文件頁數(shù)： | 5/22頁 |
| 文件大小： | 331K |
| 代理商： | TLC7225IDWR |
TLC7225C, TLC7225I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS109B – OCTOBER 1996 – REVISED FEBRUARY 2001
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
AGND bias for direct bipolar-output operation
The TLC7225 can be used in bipolar operation without adding additional external operational amplifiers by
biasing AGND to VSS as shown in Figure 9. This configuration provides an excellent method for providing a
direct bipolar output with no additional components. The transfer values are shown in Table 4.
_
+
DAC A
AGND
DGND
TLC7225
REFA (Vref = 5 V)
OUTA
5
22
2
7
3
VDD = 10 to 15 V
6
VSS
Digital inputs omitted for clarity.
– 5 V
Output range
(5 V to – 5 V)
Figure 9. AGND Bias for Direct Bipolar-Output Operation
LSB
MSB
DAC LATCH CONTENTS
ANALOG OUTPUT
) V
ref
127
128
1111
) V
ref
1
128
1000
0001
1000
0000
–V
ref
128
+* V
ref
0111
1111
0000
0001
* V
ref
127
128
0000
0 V
Table 4. Bipolar (Offset Binary) Code
* V
ref
1
128
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