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AD588
As shown in Figure 40, the AD588 is an excellent choice for the
+15V
control element in a bipolar bridge driver scheme. Transistor Q1
and Transistor Q2 serve as series-pass elements to boost the
220 ?
Q 1 =
2N3904
current drive capability to the 28 mA required by a typical
350 Ω bridge. A differential gain stage can still be required if the
7
6
4
3
bridge balance is not perfect. Such gain stages can be expensive.
Additional common-mode voltage reduction is realized by
using the circuit illustrated in Figure 41. A1, the ground sense
amplifier, serves the supplies on the bridge to maintain a virtual
R B
A1
R1
AD588
R4
A3
1
14
–
E O
+
ground at one center tap. The voltage that appears on the opposite
center tap is now single-ended (referenced to ground) and can
be amplified by a less expensive circuit.
R3
R2
R5
R6
A4
15
2
220 ?
+V S
Q 2 =
2N3906
–15V
A2
16
–V S
5
9
10
8
12
11
13
Figure 40. Bipolar Bridge Drive
+15V
220 ?
Q 1 =
2N3904
7
6
4
3
R B
R2
A1
R1
R4
R5
AD588
A3
A4
1
14
15
220 ?
Q 2 =
2N3906
AD OP-07
R1
R2
+
V OUT
–
R3
R6
2 +V S
–15V
A2
16 –V S
5
9
10
8
12
11
13
Figure 41. Floating Bipolar Bridge Drive with Minimum CMV
Rev. L | Page 18 of 20
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相关代理商/技术参数
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)
AD588SD 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Reference
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