A good PCB layout for the LMP91300NHZR involves separating analog and digital grounds, using a solid ground plane, and placing the device close to the analog signal sources. Additionally, it's recommended to use a 4-layer PCB with a dedicated analog power plane and a dedicated digital power plane.
To optimize the gain and offset of the LMP91300NHZR, you can use the internal gain and offset calibration registers. You can also use external resistors to adjust the gain and offset. It's recommended to consult the datasheet and application notes for specific guidance on gain and offset calibration.
The recommended power-up sequence for the LMP91300NHZR is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD). This ensures that the analog circuitry is powered up before the digital circuitry, which helps to prevent digital noise from affecting the analog signals.
To handle the high impedance of the LMP91300NHZR's input pins, it's recommended to use a buffer amplifier or a voltage follower to drive the input signals. This helps to prevent signal degradation and ensures that the input signals are not affected by the high impedance of the input pins.
The recommended method for filtering out noise and interference in the LMP91300NHZR's output signals is to use a low-pass filter or a band-pass filter. The filter should be designed to reject noise and interference in the frequency range of interest, while allowing the desired signal to pass through.
LMP91300NHZR datasheet
by Texas Instruments
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