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參數(shù)資料
| 型號(hào)： | DAC8012JU-BI |
| 英文描述： | 12-Bit Digital-to-Analog Converter |
| 中文描述： | 12位數(shù)字到模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 9/9頁 |
| 文件大?。?/td> | 211K |
| 代理商： | DAC8012JU-BI |
9
DAC80/80P
Driving a Resistive Load Unipolar
A load resistance, R
= R
+ R
, connected as shown in
Figure 11 will generate a voltage range, V
OUT
, determined
by:
V
OUT
= –2mA [(R
L
x
R
O
)
÷
(R
L
+ R
O
)]
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
The unipolar output impedance R
equals 6.6k
(typ) and
R
is the internal load resistance of 968
(derived by
connecting pin 15 to 20 and pin 18 to 19). By choosing R
LS
= 210
, R
= 1178
. R
in parallel with R
yields 1k
total
load. This gives an output range of 0 to –2V. Since R
is not
exact, initial trimming per Figure 3 may be necessary; also
R
LS
may be trimmed.
Driving a Resistive Load Bipolar
The equivalent output circuit for a bipolar output voltage
range is shown in Figure 12, R
L
= R
LI
+ R
LS
. V
OUT
is
determined by:
V
OUT
=
±
1mA [(R
O
x
R
L
)
÷
(R
O
+ R
L
)]
By connecting pin 17 to 15, the output current becomes
bipolar (
±
1mA) and the output impedance R
O
becomes
3.2k
(6.6k
in parallel with 6.3k
). R
LI
is 1200
(derived
by connecting pin 15 to 18 and pin 18 to 19). By choosing
R
LS
= 225
, R
L
= 1455
. R
L
in parallel with R
O
yields 1k
total load. This gives an output range of
±
1V. As indicated
above, trimming may be necessary.
FIGURE 12. Current Output Model Connected for Bipolar
Output Voltage with Resistive Load.
21
15
+1mA
V
OUT
–
R
LI
R
O
Current Controlled
by Digital Input
+
Common
R
LS
20
FIGURE 11. Current Output Model Equivalent Circuit
Connected for Unipolar Voltage Output with
Resistive Load.
21
15
0 to
–2mA
V
OUT
–
R
LI
R
O
Current Controlled
by Digital Input
+
Common
R
LS
18
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| DAC8043A1ES | 功能描述:IC DAC 12BIT MULT SRL INP 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,400 系列:- 設(shè)置時(shí)間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:36-TFBGA 供應(yīng)商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類型:* 采樣率（每秒）:* |
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