topic Re: Analog input specs. in LPC Microcontrollers

Analog input specs.

lpcware — Wed, 15 Jun 2016 19:58:11 GMT

Content originally posted in LPCWare by brownm on Tue Mar 10 17:01:09 MST 2015
Hi There

We are wanting to know the following details on the ADC block in the LPC54102, we can't find anything in the datasheet.

1. What is the current consumed when the ADC block is active.
2. What is the adc port input impedance, & is this a function of the clock frequency (as is it is on th LPC11U68)

Thanks and Regards
Marshall

Re: Analog input specs.

lpcware — Wed, 15 Jun 2016 19:58:12 GMT

Content originally posted in LPCWare by xianghuiwang on Tue Mar 10 17:43:52 MST 2015
Hi, brownm,
The ADC in LPC54102 consumes 1.0mA at its maximum 4.8MS/s. And yes the input impedance is a function of the clock frequency. We are in the process to update the DS to reflect these details.
regards,

Re: Analog input specs.

lpcware — Wed, 15 Jun 2016 19:58:13 GMT

Content originally posted in LPCWare by nerd herd on Wed Mar 11 07:42:17 MST 2015
Hi brownm,

In our LPC5410x heart-rate monitor application note, there is a bit more information on the ADC power consumption:

http://www.lpcware.com/content/nxpfile/heart-rate-monitor-using-low-power-lpc5410x