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LMP90100MHE/NOPB Datasheet(PDF) 27 Page - Texas Instruments

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Part # LMP90100MHE/NOPB
Description  LMP90100/LMP90099/LMP90098/LMP90097 Sensor AFE System: Multi-Channel, Low Power 24-Bit Sensor AFE with True Continuous Background Calibration
PDF  69 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMP90100MHE/NOPB Datasheet(HTML) 27 Page - Texas Instruments

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FREQUENCY (Hz)
Crystal = 3.5717 MHz
Crystal = 3.6864 MHz
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FREQUENCY (Hz)
107.325 SPS
214.65 SPS
LMP90100
www.ti.com
SNAS510P – JANUARY 2011 – REVISED MARCH 2013
Figure 41. Digital Filter Response 107.325 SPS and 214.65 SPS
If the internal CLK is not being used and the external CLK is not 3.5717 MHz, then the filter response would be
the same as the response shown above, but the frequency will change according to the equation:
fNEW = [(CLKEXT) / 256 ] x (fOLD / 13.952k)
(11)
Using the equation above, an example of the filter response for a 3.5717 MHz XTAL versus a 3.6864 MHz XTAL
can be seen in Figure 42.
Figure 42. Digital Filter Response for a 3.5717MHz versus 3.6864 MHz XTAL
GPIO (D0–D6)
Pins D0-D6 are general purpose input/output (GPIO) pins that can be used to control external LEDs or switches.
Only a high or low value can be sourced to or read from each pin.
Figure 43 shows a flowchart how these GPIOs can be programmed.
Copyright © 2011–2013, Texas Instruments Incorporated
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Product Folder Links: LMP90100



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