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Tips Index Locate the power decoupling capacitor as close to the IC as possible. Where possible, use a ground plane. Use low-inductance capacitors for power-supply decoupling. Protective gels and coatings on the PRT element cause hysteresis. Protect the IC and PRT passivation layer during assembly. Keep the electrical wiring connection between the PRT element and the ASIC as short as possible. Buffer the power input with a low-impedance resistor and capacitor as close to the connector as possible. Don't intermingle PRT wiring traces with other circuit traces. Select the correct type of PRT die attach for the application. Place the ESD / EMI capacitors adjacent to the connector pins. Connect the circuit ground to the case with a resistive path to drain ESD charge. Tie unused IC inputs to VDD or GND, as appropriate, either directly or with a resistor. Minimize the number of wiring connections to the conditioning IC. Contact us by e-mail at var name = "SensorApps @"; var domain = "maximhq.co m "; document.write (" "+ name + domain +" "); if you need applications support for any of Maxim's conditioner products or additional help with any of the tips listed. We'd also like to hear from you if you have some tips of your own you'd like to share.
Locate the power decoupling capacitor as close to the IC as possible. All conductors, even a straight copper PCB track, exhibit inductance effects at high frequencies. The greater the distance between an IC's power-supply pin and its associated decoupling capacitor, the greater this inductance will be. The high-frequency impedance produced by this inductance adds to other circuit-impedance elements and reduces the effectiveness of the power-supply decoupling, rendering the circuit more susceptible to high-frequency EMI and ESD effects. This inductance can be minimized by placing the power-supply decoupling capacitors as close as possible to the IC power-supply pins.
Also see tips on using low-impedance capacitors and a ground plane.
The use of a ground plane will help reduce noise. If a ground plane is not available, then try to run grounded PCB tracks as close as possible to the sensor connection tracks, particularly the connections to the conditioner inputs; see connections marked INP and INM on Maxim data sheets.
Analog CCTV Transmission with single fiber and time-multiplexed technology, Analog CCTV transmission fulfills the access and transmission of video, low speed data, audio, Ethernet data and switch etc. Front-end equipment, can achieve the access, multiplexing and transmission of digital non-compressed video and multi business data. The local-end is standalone or rack-mounted equipment connected to VM Optical system or is directly connected to it with fiber.
Tech Tips: Getting the Most fr
Abstract: This applicaTIon note provides some simple design rules for maximizing the ESD, EMI and general performance of your sensor condiTIoning IC and system. Guidance on the use of ground planes and decoupling capacitors is provided, together with TIps on component locaTIon, PRT wiring and PRT element protection.