参数资料
| 型号： | AD202KN |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC AMP ISOL 2KHZ DUAL LP 38DIP |
| 标准包装： | 1 |
| 放大器类型： | 隔离 |
| 电路数： | 2 |
| 增益带宽积： | 2kHz |
| 电流 - 输入偏压： | 30pA |
| 电压 - 输入偏移： | 5000µV |
| 电流 - 电源： | 5mA |
| 电流 - 输出 / 通道： | 400µA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 38-DIP（0.600"，15.24mm），11 引线 |
| 供应商设备封装： | 10-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 771 (CN2011-ZH PDF) |
REV. D
AD202/AD204
–10–
High Compliance Current Source. In Figure 19, an isolator
is used to sense the voltage across current-sensing resistor RS to
allow direct feedback control of a high voltage transistor or FET
used as a high compliance current source. Since the isolator has
virtually no response to dc common-mode voltage, the closed-
loop current source has a static output resistance greater than
10
14
W even for output currents of several mA. The output
current capability of the circuit is limited only by power dissipa-
tion in the source transistor.
AD202
OR
AD204
100k
+15V
–15V
470pF
10k
+5V REF
+
–
VC
20k
LOAD
IL =
VC
RS
–10V TO +250V
RS
1k
MPS
U10
1k
Figure 19. High Compliance Current Source
Motor Control Isolator. The AD202 and AD204 perform
very well in applications where rejection of fast common-mode
steps is important but bandwidth must not be compromised.
Current sensing in a fill-wave bridge motor driver (Figure 20) is
one example of this class of application. For 200 V common-mode
steps (1
ms rise time) and a gain of 50 as shown, the typical
response at the isolator output will be spikes of
±5 mV ampli-
tude, decaying to zero in less than 100
ms. Spike height can be
reduced by a factor of four with output filtering just beyond the
isolator’s bandwidth.
AD204
+
–
5V
M
5m
20A
+
200V dc
–
100mV
Figure 20. Motor Control Current Sensing
Floating Current Source/Ohmmeter. When a small floating
current is needed with a compliance range of up to
±1000 V dc,
the AD204 can be used to both create and regulate the current.
This can save considerable power, since the controlled current
does not have to return to ground. In Figure 21, an AD589
reference is used to force a small fixed voltage across R. That
sets the current that the input op amp will have to return
through the load to zero its input. Note that the isolator’s out-
put isn’t needed at all in this application; the whole job is done
by the input section. However, the signal at the output could be
useful as it’s the voltage across the load, referenced to ground.
Since the load current is known, the output voltage is propor-
tional to load resistance.
AD204
LOAD
R
7.5V
1 F
+
30k
AD589
+
–
VO =
RL
VR
R
ILOAD =
(2mA MAX)
VLOAD
4V
1.23V
R
Figure 21. Floating Current Source
Photodiode Amplifier. Figure 22 shows a transresistance
connection used to isolate and amplify the output of a photo-
diode. The photodiode operates at zero bias, and its output
current is scaled by RF to give a 5 V full-scale output.
AD202
OR
AD204
0V TO 5V
500k
PHOTO
DIODE
10 A
FS
Figure 22. Photodiode Amplifier
(NOTE: Circuit figures shown on this page are for SIP-style packages. Refer to
Page 3 for proper DIP package pinout.)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD202KN | 制造商:Analog Devices 功能描述:IC AMP ISOLATION |
| AD202KY | 功能描述:IC AMP ISOL 2KHZ DUAL LP 38DIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD202KY | 制造商:Analog Devices 功能描述:IC AMP ISOLATION |
| AD-2031 | 制造商:BOTHHAND 制造商全称:Bothhand USA, LP. 功能描述:ADSL LINE TRANSFORMER |
| AD-2032S | 制造商:BOTHHAND 制造商全称:Bothhand USA, LP. 功能描述:ADSL LINE TRANSFORMER |
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