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参数资料
| 型号： | DG423DN |
| 厂商： | VISHAY SILICONIX |
| 元件分类： | 多路复用及模拟开关 |
| 英文描述： | DUAL 1-CHANNEL, SGL POLE DOUBLE THROW SWITCH, PQCC20 |
| 封装： | PLASTIC, LCC-20 |
| 文件页数： | 8/8页 |
| 文件大小： | 114K |
| 代理商： | DG423DN |
–
+
–
+
–
+
MIC
A
DG425
MIC
B
VOUT
D1
D0
WR
RS
500
W
500
W
500
W
500
W
500
W
500
W
Figure 11. Bus-Controlled Selector for Balanced-Line Microphones
DG421/423/425
8
Siliconix
S-52880—Rev. D, 28-Apr-97
Applications
When switch S1 of Figure 10 is closed, the op amp is
placed
in
the
familiar
unity-gain
non-inverting
configuration. When switch S2 is closed and S1 is open
the gain is given by:
AV + 1 )
R1
R2
The microprocessor system WR must gate the decoder
output to ensure proper timing.
Figure 11 shows a balanced-line microphone input stage
that provides selection or summing between two
balanced-line
microphones
and
also
performs
differential-to-single-ended conversion. Either MIC A or
MIC B can be selected, and neither and/or both may be
summed at the output. This configuration uses “virtual
ground” switching, a method which minimizes distortion
resulting
from
the
analog
switch
on-resistance
modulation. The actual voltage swings experienced by
the analog switch barely exceed 1 V for a 15-V full-scale
range input.
V+
V–
–15 V
+15 V
–
+
Address
Decoder
Data
Bus
DG421
System WR
WR
VIN
VOUT
D1
D0
RS
VL
R1
R2
74HC138
Figure 10. Bus-Controlled Precision Gain-Ranging Circuit
GND
+5 V
D1
D2
Output
0
None
0
1
MIC A
1
0
MIC B
1
MIC A and MIC B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DG423DN-T | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| DG423DY | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| DG423DY+ | 功能描述:模拟开关 IC Dual SPST Low Power CMOS Normally Open RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| DG423DY+T | 功能描述:模拟开关 IC Dual SPST Low Power CMOS Normally Open RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| DG423DY-T | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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