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| 型号： | ADR550BRTZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC 5V SOT-23-3 |
| 标准包装： | 1 |
| 基准类型： | 旁路，精度 |
| 输出电压： | 5V |
| 容差： | ±0.2% |
| 温度系数： | 40ppm/°C |
| 通道数： | 1 |
| 电流 - 阴极： | 50µA |
| 电流 - 输出： | 15mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23-3 |
| 包装： | 标准包装 |
| 产品目录页面： | 796 (CN2011-ZH PDF) |
| 其它名称： | ADR550BRTZ-REEL7DKR |
ADR520/ADR525/ADR530/ADR540/ADR550
Stacking the ADR520/ADR525/ADR530/ADR540/ADR550
for User-Definable Outputs
Multiple ADR520/ADR525/ADR530/ADR540/ADR550 parts
can be stacked to allow the user to obtain a desired higher voltage.
resistor, R BIAS , is chosen using Equation 3; note that the same
bias current flows through all the shunt references in series.
is calculated in the same manner as before. Parts of different
voltages can also be added together. For example, an ADR525
and an ADR550 can be added together to give an output of
+7.5 V or ?7.5 V, as desired. Note, however, that the initial
accuracy error is now the sum of the errors of all the stacked
parts, as are the temperature coefficients and output voltage
Adjustable Precision Voltage Source
The ADR520/ADR525/ADR530/ADR540/ADR550, combined
illustrates the implementation of this application using the
ADR520/ADR525/ADR530/ADR540/ADR550. The output
of the op amp, V OUT , is determined by the gain of the circuit,
which is completely dependent on the resistors, R1 and R2.
V OUT = V REF (1 + R2 / R1 )
An additional capacitor, C1, in parallel with R2, can be added to
filter out high frequency noise. The value of C1 is dependent on
the value of R2.
V S
change vs. input current.
+V DD
R
R
+15V
ADR550
ADR550
V REF
ADR5xx
AD8610
R2
V OUT = V REF (1+R2/R1)
ADR550
R1
GND
Figure 22. +15 V Output with Stacked ADR550s
GND
C1
(OPTIONAL)
Figure 24. Adjustable Voltage Source
ADR550
GND
ADR550
ADR550
–15V
R
–V DD
Figure 23. ?15 V Output with Stacked ADR550s
Rev. E | Page 12 of 1 6
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