TMUX7208开发板套件编程器的评估演示板及套件规格书PDF中文资料

TMUX7208属于开发板套件编程器的评估演示板及套件。由德州仪器制造生产的TMUX7208评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。

1 Features

• Latch-up immune

• Dual supply range: ±4.5V to ±22V

• Single supply range: 4.5V to 44V

• Low on-resistance: 4Ω

• Low charge injection: 3pC

• High current support: 400mA (maximum) (WQFN)

• High current support: 300mA (maximum) (TSSOP)

• –40°C to +125°C operating temperature

• 1.8V logic compatible inputs

• Integrated pull-down resistor on logic pins

• Fail-safe logic

• Rail-to-rail operation

• Bidirectional signal path

• Break-before-make switching

2 Applications

• Factory automation and control

• Programmable logic controllers (PLC)

• Analog input modules

• Semiconductor test equipment

• Battery test equipment

• Ultrasound scanners

• Patient monitoring and diagnostics

• Optical networking

• Optical test equipment

• Wired networking

• Data acquisition systems (DAQ)

3 Description

The TMUX7208 is a precision 8:1, single channel

multiplexer while the TMUX7209 is a 4:1, 2 channel

multiplexer featuring low on resistance and charge

injection. The devices work with a single supply (4.5V

to 44V), dual supplies (±4.5V to ±22V), or asymmetric

supplies (such as VDD = 12V, VSS = –5V). The

TMUX720x support bidirectional analog and digital

signals on the source (Sx) and drain (D) pins ranging

from VSS to VDD.

The TMUX720x are part of the precision switches

and multiplexers family of devices and have very

low on and off leakage currents allowing them to

be used in high precision measurement applications.

The TMUX720x family provides latch-up immunity,

preventing undesirable high current events between

parasitic structures within the device typically caused

by overvoltage events. A latch-up condition typically

continues until the power supply rails are turned off

and can lead to device failure. The latch-up immunity

feature allows the TMUX720x family of switches and

multiplexers to be used in harsh environments.