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参数资料
| 型号： | AD588AQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC ADJ 16-CDIP |
| 标准包装： | 25 |
| 基准类型： | 串联，可调节，精度 |
| 输出电压： | ±5V，±10V |
| 容差： | ±3mV |
| 温度系数： | 3ppm/°C |
| 输入电压： | 10.8 V ~ 36 V |
| 通道数： | 2 |
| 电流 - 静态： | 10mA |
| 电流 - 输出： | 10mA |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-CDIP |
| 包装： | 管件 |
| 产品目录页面： | 795 (CN2011-ZH PDF) |
AD588
A practical consideration when using the 4-wire ohms
technique with an RTD is the self-heating effect that the
excitation current has on the temperature of the RTD. The
designer must choose the smallest practical excitation current
that still gives the desired resolution. RTD manufacturers
usually specify the self-heating effect of each of their models or
types of RTDs.
current for a 100 Ω RTD. The small excitation current of 1 mA
dissipates a mere 0.1 mW of power in the RTD.
BOOSTED PRECISION CURRENT SOURCE
In the RTD current-source application, the load current is limited
to ±10 mA by the output drive capability of Amplifier A3. In the
event that more drive current is needed, a series-pass transistor
can be inserted inside the feedback loop to provide higher
current. Accuracy and drift performance are unaffected by the
pass transistor.
BRIDGE DRIVER CIRCUITS
The Wheatstone bridge is a common transducer. In its simplest
form, a bridge consists of four two-terminal elements connected
to form a quadrilateral, a source of excitation connected along
one of the diagonals and a detector comprising the other
diagonal.
excitation supply. EO, a differential voltage, is proportional to
the deviation of the element from the initial bridge values.
Unfortunately, this bridge output voltage is riding on a
common-mode voltage equal to approximately V IN /2. Further
processing of this signal may necessarily be limited to high
common-mode rejection techniques, such as instrumentation
or isolation amplifiers.
from a pair of bipolar supplies. This configuration ideally
eliminates the common-mode voltage and relaxes the
restrictions on any processing elements that follow.
R B
7
6
4
3
A3
1
R C
VISHAY S102C
OR SIMILAR
R B
7
6
4
3
A3
1
220 ?
V CC
Q 1
A1
R1
R4
AD588
14
R C = 10k ?
A1
R1
R4
AD588
14
1.0mA
R2
R5
A4
15
0.01%
+
R2
R5
A4
15
I L =
R3
5
9
A2
10
8
12
R6
11
13
2
16
+V S
–V S
100 ?
–15V
OR
GROUND
V OUT
–
R3
5
9
A2
10
8
12
R6
11
13
2
16
+V S
–V S
10V
R C
LIMITED BY
Q 1 AND R C
POWER
DISSIPATION
RTD = ? K4515
0.24°C/mW SELF-HEATING
Figure 36. Precision Current Source for RTD
Figure 37. Boosted Precision Current Source
LOAD
V IN
+
–
R4
R1
–
E O
+
R3
R2
V 1
V 2
+
–
+
–
R4
R1
–
E O
+
R3
R2
Figure 38. Bridge Transducer Excitation—Unipolar Drive
Rev. L | Page 17 of 20
Figure 39. Bridge Transducer Excitation—Bipolar Drive
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相关代理商/技术参数 |
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| AD588ARWZ | 功能描述:IC VREF SERIES PREC ADJ 16-SOICW RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:1,000 系列:- 基准类型:旁路，可调节，精度 输出电压:2.495 V ~ 36 V 容差:±0.5% 温度系数:标准值 34ppm/°C 输入电压:2.495 V ~ 36 V 通道数:1 电流 - 阴极:1mA 电流 - 静态:- 电流 - 输出:100mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:TO-243AA 供应商设备封装:SOT-89-3 包装:带卷 (TR) |
| AD588BD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference |
| AD588BQ | 功能描述:IC VREF SERIES PREC ADJ 16-CDIP RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| AD588JQ | 功能描述:IC VREF SERIES PREC ADJ 16-CDIP RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:1,000 系列:- 基准类型:旁路，可调节，精度 输出电压:2.495 V ~ 36 V 容差:±0.5% 温度系数:标准值 34ppm/°C 输入电压:2.495 V ~ 36 V 通道数:1 电流 - 阴极:1mA 电流 - 静态:- 电流 - 输出:100mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:TO-243AA 供应商设备封装:SOT-89-3 包装:带卷 (TR) |
| AD588KQ | 功能描述:IC VREF SERIES PREC ADJ 16-CDIP RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
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