LMP91050

www.ti.com

SNAS517E – NOVEMBER 2011 – REVISED SEPTEMBER 2015

10 Power Supply Recommendations

Because the LMP91050 is used in a sampled data system, care must be taken to maintain power supply noise

below an acceptable level, which will depend on the requirements of the application. In all cases, follow the

manufacturer’s design recommendations for the power conditioning device used in the system. The LMP91050

offers excellent power supply rejection over a wide range of frequencies, but adequate power supply bypassing

should always be used (see Figure 26). If using a switching supply, additional filtering may be required

particularly if the switcher harmonics fall within the passband of the filters used in the system. Ensure that the

selected power conditioning device is capable of sourcing the current required by the LMP91050.

11 Layout

11.1 Layout Guidelines

Figure 33 shows a layout example for the LMP91050. All components should be placed as close as possible

to the device, especially the bypass capacitors to VDD (CBypass1 and CBypass2).

11.2 Layout Example

Figure 33. LMP91050 Layout Example

Copyright © 2011–2015, Texas Instruments Incorporated

Submit Documentation Feedback

21

Product Folder Links: LMP91050