Schematic design

The schematic design should start from the most important nRF9160 interfaces which are the supplies and radio frequency interfaces. The Subscriber Identity Module (SIM) and control interfaces should also be prioritized, as they may require special application components, for example, for Electrostatic Discharge (ESD) protection.

The following figure shows recommendations that can be used as the basis of the application’s schematic design.

Figure 1. nRF9160 application design recommendations

The following table provides information on recommended components:

Table 1. nRF9160 application component recommendations
Reference	Description	Quality	Example part number
C1	CAP, 15 pF, 25 V, C0G, 0201	X5R, 10 V or better	GJM0335C1E150JB01
C2	CAP, 100 nF, 10 V, X5R, 0201		GRM033R61A104KE15
C3	CAP, 47 uF, 10 V, X5R, 0805		GRM21BR61A476ME15
C5	CAP, 100 nF, 10 V, X5R, 0201		GRM033R61A104KE15
C6	CAP, 4.7uF, 10V, X5R, 0402		GRM155R61A475MEAA
C7	CAP, 4.7uF, 10V, X5R, 0402		GRM155R61A475MEAA
C8	CAP, 15 pF, 25V, C0G, 0201		GJM0335C1E150JB01
C9	CAP, 100 nF, 10 V, X5R, 0201		GRM033R61A104KE15
C10	CAP, 47 uF, 10 V, X5R, 0805		GRM21BR61A476ME15
C12	CAP, 100 nF, 10 V, X5R, 0201		GRM033R61A104KE15
C13	CAP, 100 nF, 10 V, X5R, 0201		GRM033R61A104KE15
C14¹	Optional. Not recommended to be assembled by default.		GJM0335C1E100JB01
C15¹			GJM0335C1E100JB01
C16²			GRM033R61A104KE15
R/L/C	Antenna matching	High-Q components, for example, Murata LQW15AN series inductors and GJM1555C1 series capacitors
L/C	Antenna matching
R1	10 kΩ resistor	NA	RC0201FR-0710KL
R2	Resistor in the range of 1 kΩ		RC0201FR-071KL
R3
R4

¹CAP, ≤10 pF, 5%, 25 V, C0G, 0201

²CAP, 100 nF, 10 V, X5R, 0201

For recommended matching component values and topology, see the datasheets of the LTE and Global Positioning System (GPS) antennas. For more information on the antenna design and interface, see nRF9160 Antenna and RF Interface Guidelines.