Joined: 2 March 2007
Location: GB
Posts: 1

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We require our product to be programmable for either Analogue or PWM mode. However, revision 003 of your data sheet shows a capacitor of 100nF between Output and GND for Analogue mode (Fig. 17.1) and 4.7nF for PWM mode (Fig 17.3). This suggests that a hardware change would be necessary to change between the two modes, which is unacceptable to us. However, your document ' 0005269_MLX90316_PTC04connection_Rev12_JCD_27Nov06.pdf ' shows an MLX90316 connected to a PTC-04. It is labelled ' Analogue/PWM application ' and shows a 47nF capacitor connected between the Output and GND. Please confirm whether we can use a single capacitor value for both modes and, if so, what its value should be?

Joined: 1 February 2006
Location: BE
Posts: 102

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Hello

In analog mode the 90316 needs a capacitor of minimum 47 nF. In PWM mode it can be as small as 4.7nF and will mainly influence the rise/fall time of the flanks.

If the signal in PWM mode with a 47 nF is acceptable for your application, then you can use this value for both output modes.

rg

JC Depoorter