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| 型号： | YC751 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | 0.9-ohm LOW-VOLTAGE SINGLE-SUPPLY QUAD SPST ANALOG SWITCH |
| 中文描述： | 0.9欧姆的低电压，单电源四路SPST模拟开关 |
| 文件页数： | 13/14页 |
| 文件大小： | 169K |
| 代理商： | YC751 |
www.ti.com
APPLICATION INFORMATION
Logic Inputs
Analog Signal Levels
Layout
TS3A4751
0.9-
LOW-VOLTAGE SINGLE-SUPPLY QUAD SPST ANALOG SWITCH
SCDS227C – JULY 2006 – REVISED SEPTEMBER 2006
Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum
ratings because stresses beyond the listed ratings can cause permanent damage to the devices. Always
sequence V+ on first, followed by NO or COM.
Although it is not required, power-supply bypassing improves noise margin and prevents switching noise
propagation from the V+ supply to other components. A 0.1-F capacitor, connected from V+ to GND, is
adequate for most applications.
The TS3A4751 logic inputs can be driven up to 3.6 V, regardless of the supply voltage. For example, with a
1.8-V supply, IN may be driven low to GND and high to 3.6 V. Driving IN rail to rail minimizes power
consumption.
Analog signals that range over the entire supply voltage (V+ to GND) can be passed with very little change in ron
(see Typical Operating Characteristics). The switches are bidirectional, so NO and COM can be used as either
inputs or outputs.
High-speed switches require proper layout and design procedures for optimum performance. Reduce stray
inductance and capacitance by keeping traces short and wide. Ensure that bypass capacitors are as close to the
device as possible. Use large ground planes where possible.
8
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