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| 型号： | DG542DJ-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 17/18页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH QUAD SPST 16DIP |
| 标准包装： | 500 |
| 功能： | 视频开关 |
| 电路： | 4 x SPST - NC/NO |
| 导通状态电阻： | 60 欧姆 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 10 V ~ 18 V，±10 V ~ 15 V |
| 电流 - 电源： | 3.5mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-PDIP |
| 包装： | 管件 |
www.vishay.com
8
Document Number: 70055
S11-1429–Rev. H, 18-Jul-11
Vishay Siliconix
DG540, DG541, DG542
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TEST CIRCUITS
APPLICATIONS
Device Description
The DG540, DG541, DG542 family of wideband switches
offers true bidirectional switching of high frequency analog or
digital signals with minimum signal crosstalk, low insertion
loss, and negligible non-linearity distortion and group delay.
Built on the Siliconix D/CMOS process, these "T" switches
provide excellent off-isolation with a bandwidth of around
500 MHz (350 MHz for DG541). Silicon-gate D/CMOS
processing also yields fast switching speeds.
An on-chip regulator circuit maintains TTL input compatibility
over the whole operating supply voltage range, easing
control logic interfacing.
Circuit layout is facilitated by the interchangeability of source
and drain terminals.
Frequency Response
A single switch on-channel exhibits both resistance (RDS(on))
and capacitance (CS(on)). This RC combination has an
attenuation effect on the analog signal – which is frequency
dependent (like an RC low-pass filter). The - 3-dB bandwidth
of the DG540 is typically 500 MHz (into 50
). This measured
figure of 500 MHz illustrates that the switch channel can not
be represented by a two stage RC combination. The on
capacitance of the channel is distributed along the on-
resistance, and hence becomes a more complex multi stage
network of R’s and C’s making up the total RDS(on) and
CS(on). See Application Note AN502 for more details.
Off-Isolation and Crosstalk
Off-isolation and crosstalk are affected by the load
resistance and parasitic inter-electrode capacitances. Higher
off-isolation is achieved with lower values of RL. However,
low values of RL increase insertion loss requiring gain
adjustments down the line. Stray capacitances, even a
fraction of 1 pF, can cause a large crosstalk increase. Good
layout and ground shielding techniques can considerably
improve your ac circuit performance.
Figure 6. All Hostile Crosstalk
S2
S3
S4
X
TA LK(AH)
=
20 log
10
V
OUT
V
IN
VO
10
Ω
RL
75
Ω
INX
S1
V+
V-
+ 15 V
- 15 V
C
GND
2.4 V
D2
D3
D1
D4
RL
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DG542DY | 功能描述:视频开关 IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| DG542DY-E3 | 功能描述:视频开关 IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| DG542DY-T1 | 功能描述:视频开关 IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| DG542DY-T1-E3 | 功能描述:视频开关 IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| DG548AK | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Interface IC |
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