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参数资料
| 型号： | AD8205 |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 运动控制电子 |
| 英文描述： | Single-Supply 42 V System Difference Amplifier |
| 中文描述： | 单电源42 V系统差分放大器 |
| 文件页数： | 9/12页 |
| 文件大小： | 308K |
| 代理商： | AD8205 |
AD8205
OUTPUT OFFSET ADJUSTMENT
The output of the AD8205 can be adjusted for unidirectional or
bidirectional operation.
Rev. 0 | Page 9 of 12
UNIDIRECTIONAL OPERATION
Unidirectional operation allows the AD8205 to measure cur-
rents through a resistive shunt in one direction. The basic
modes for unidirectional operation are ground referenced
output mode and V+ referenced output mode.
In the case of unidirectional operation, the output could be set
at the negative rail (near ground) or at the positive rail (near
V+) when the differential input is 0 V. The output moves to the
opposite rail when a correct polarity differential input voltage is
applied. In this case, full scale is approximately 100 mV. The
required polarity of the differential input depends on the output
voltage setting. If the output is set at the positive rail, the input
polarity needs to be negative to move the output down. If the
output is set at ground, the polarity is positive to move the
output up.
GROUND REFERENCED OUTPUT
When using the AD8205 in this mode, both reference inputs are
tied to ground, which causes the output to sit at the negative rail
when there are zero differential volts at the input (see Figure 14).
0
AD8205
+IN
–IN
NC
NC = NO CONNECT
GND
V+
OUT
V
REF
1
V
REF
2
Figure 14. Ground Referenced Output
Table 4. V+ = 5 V
V
IN
(Referred to IN)
0 V
100 mV
V
O
0.05 V
4.8 V
V+ REFERENCED OUTPUT
This mode is set when both reference pins are tied to the posi-
tive supply. It is typically used when the diagnostic scheme
requires detection of the amplifier and the wiring before power
is applied to the load (see Figure 15).
0
AD8205
+IN
–IN
NC
NC = NO CONNECT
GND
V+
OUT
V
REF
1
V
REF
2
Figure 15. V+ Referenced Output
Table 5. V+ = 5 V
V
IN
(Referred to IN)
0 V
100 mV
BIDIRECTIONAL OPERATION
Bidirectional operation allows the AD8205 to measure currents
through a resistive shunt in two directions.
V
O
4.8 V
0.05 V
In this case, the output is set anywhere within the output range.
Typically, it is set at half-scale for equal range in both directions.
In some cases, however, it is set at a voltage other than half-scale
when the bidirectional current is nonsymmetrical.
Table 6. V+ = 5 V, V
O
= 2.5 with V
IN
= 0 V
V
IN
(Referred to IN)
+40 mV
40 mV
Adjusting the output is accomplished by applying voltage(s) to
the reference inputs.
V
O
4.5 V
0.5 V
V
REF
1 and V
REF
2 are tied to internal resistors that connect to an
internal offset node. There is no operational difference between
the pins.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8205AR | 制造商:Analog Devices 功能描述:- Bulk |
| AD8205WHRZ | 制造商:Analog Devices 功能描述:42VSNGLSUPPLYDIFFAMP - Rail/Tube 制造商:Analog Devices 功能描述:IC OPAMP DIFF 50KHZ 8SOIC 制造商:Analog Devices 功能描述:42V Sngl Supply Diff Amp |
| AD8205WHRZ-RL | 制造商:Analog Devices 功能描述:42VSNGLSUPPLYDIFFAMP - Tape and Reel 制造商:Analog Devices 功能描述:IC OPAMP DIFF 50KHZ 8SOIC 制造商:Analog Devices 功能描述:42V Sngl Supply Diff Amp |
| AD8205WYRZ | 功能描述:IC AMP DIFF 42V SGL 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:管件 |
| AD8205WYRZ-R7 | 功能描述:IC AMP DIFF 42V SGL 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
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