Circuit configuration 1 for CSP98 (PAAA)

nRF54LM20A | nRF54LM20B Datasheet
Table 1. Configuration summary for circuit configuration no. 1
Config no. Supply configuration Enabled features
VDD USB NFC
Config. 1 DCDC: supplied by battery or external supply Yes No
Figure 1. Circuit configuration no. 1 schematic

P0.00 P0.01 P0.02 P0.03 P0.04 P0.05 P0.06 P0.07 P0.08 P0.09 VDD_nRF VDD_nRF P1.00 0201 C1 100nF 0201 C2 100nF 0201 C5 100nF P1.03 P1.04 0402 C4 10µF P1.05 P1.06 DCC P1.07 0603 L1 4.7µH P1.08 Optional P1.09 P1.10 P1.11 DECD P1.12 0201 FB1 P1.13 P1.14 XTAL_2012 X2 32.768kHz P1.15 VBUS P1.16 P1.17 P1.18 P1.19 0603 R1 2R2 DECA XL1 XL2 VDD_USB_3V3 P1.22 NFC_N NFC_P P1.25 P1.26 P1.27 P1.28 0201 C10 2.2µF 0402 C11 4.7µF P1.29 P1.30 P1.31 P2.00 P2.01 P2.02 P2.03 TRXTUNE ant:1 P2.04 0201 R2 200R P2.05 P2.06 P2.07 USB_D_N P2.08 USB_D_P P2.09 P2.10 XTAL_2016 X1 32MHz XC1 SWDCLK SWDIO P3.00 NRESET P3.01 XC2 P3.02 P3.03 P3.04 P3.05 P3.06 P3.07 P3.08 P3.09 P3.10 P3.11 P3.12 P1.23 P1.24 P2 is High speed port ant:2 ant:3 ant:4 DECRF C6 4.7µF 0201 C7 N.C. 0201 C14 2.2µF 0201 L5 1.0nH 0201 C8 1.0pF 0201 L2 3.6nH 0201 L3 4.7nH 0201 L4 3.3nH 0201 C3 1.2pF 0201 C12 1.5pF 0201 C13 N.C. VSS A1 VDD A3 VDD A4 DCC A5 DECD A6 VSS A7 DECA A8 VDD A9 VSS A10 DECRF C1 VSS E5 VSS E6 VSS F5 VSS F6 VDD G10 VDD H1 VSS K1 VSS K10 DECUSB K6 VBUS K7 U1A nRF54LM20A-PAAA XC1 A2 XC2 B1 ANT E1 nRESET F2 SWDCLK G1 SWDIO G2 TXRTUNE J5 D- K4 D+ K5 VSS D1 VSS D2 VSS F1 U1B nRF54LM20A-PAAA P0.09 E3 P0.08 F3 P0.07/CK G3 P0.06/CK H2 P0.05 H3 P0.04/CK J1 P0.03/CK J2 P0.02 J3 P0.01 K2 P0.00 K3 U1C nRF54LM20A-PAAA P1.05/AIN5/ASO[0] H8 P1.06/AIN4/ASI[0] J8 P1.07/EXTREF/CK G8 P1.08/ASO[1] F8 P1.09/ASI[1] E8 P1.13/CK C3 P1.16/ASI[2] B3 P1.04/AIN6/CK J9 P1.03/AIN7/CK H9 P1.02/NFC2 J7 P1.01/NFC1 J6 P1.10 D5 P1.11 C5 P1.17/CK B4 P1.00 K8 P1.12 C4 P1.14/CK C2 P1.18/CK B5 P1.15/ASO[2] B2 P1.31/AIN1 K9 P1.30/AIN2 J10 P1.29/AIN3 H10 P1.27 C8 P1.25/ASO[3] E7 P1.19 B6 P1.23/CK B7 P1.24/CK D7 P1.28 D8 P1.26/ASI[3] B8 P1.20/XL1 C6 P1.22 D6 P1.21/XL2 C7 U1D nRF54LM20A-PAAA P2.06/CK/TRACECLK B9 P2.00 B10 P2.07/TRACEDATA[0]/SWO C9 P2.01/CK C10 P2.08/TRACEDATA[1] D9 P2.02 D10 P2.09/TRACEDATA[2] E9 P2.03 E10 P2.10/TRACEDATA[3] F9 P2.04 F10 P2.05 G9 U1E nRF54LM20A-PAAA P3.12 D4 P3.11 E4 P3.10 F4 P3.09 F7 P3.08 G4 P3.07 G5 P3.06 G6 P3.05 G7 P3.03/CK H4 P3.02 H5 P3.01 H6 P3.00 H7 P3.04/CK J4 U1F nRF54LM20A-PAAA

The reference schematic shows the USB supply path, including the on-chip USB regulator and the decoupling and tuning components required at the USB pins (VBUS, DECUSB, D+, D-, and TXRTUNE). ESD and overvoltage protection components on the USB interface are not shown in this schematic. For a USB connector that may be exposed to ESD or overvoltage, the design must add appropriate protection on the VBUS and data lines in addition to the components shown here.

Note: For PCB reference layouts, see the product page for the nRF54LM20A and nRF54LM20B on www.nordicsemi.com.
Table 2. Bill of material for circuit configuration no. 1
Designator Value Description Footprint
C1, C2, C5 100 nF Capacitor, X7R, ±10% 0201
C3 1.2 pF Capacitor, NP0, 50 V, ±0.05pF 0201
C4 10 µF Capacitor, X6S, 6.3 V, ±20% 0402
C6 4.7 µF Capacitor, X5R, 6.3 V, ±20% 0201
C7, C13 NC Not mounted 0201
C8 1.0 pF Capacitor, C0G/NP0, 25 V 0201
C10, C14 2.2 µF Capacitor, X6T, 2.5 V, ±20 % 0201
C11 4.7 µF Capacitor, X5R, 10 V 0402
C12 1.5 pF Capacitor, NP0, ±0.05 pF, 25V, High Q 0201
FB1 120 Ω Ferrite bead, 120 Ω at 100 MHz, 200 mA, 500 mΩ max 0201
L1 4.7 µH Inductor, 120 mA, ±20%, 0.65 Ω 0603
L2 3.6 nH Inductor, 500 mA, ±0.1 nH, 170 mΩ 0201
L3 4.7 nH Inductor, 300 mA, ±3%, 250 mΩ 0201
L4 3.3 nH Inductor, 500 mA, ±0.1 nH, 170 mΩ 0201
L5 1.0 nH Inductor, 750 mA, ±0.2 nH 0201
R1 2.2 Ω Resistor, ±1%, 0.05 W 0201
R2 200 Ω Resistor, ±1%, 0.05 W 0201
U1 nRF54LM20A-PAAA Multiprotocol Bluetooth® Low Energy, IEEE 802.15.4, and 2.4GHz proprietary System on Chip CSP98
X1 32 MHz Crystal SMD 2016, 32 MHz, Cl = 8 pF, Total Tol: ±40 ppm. For frequency tolerance requirements, see 32 MHz crystal oscillator (HFXO). XTAL_2016
X2 32.768 kHz Crystal SMD 2012, 32.768 kHz, Cl = 9 pF, Total tol: ±20 ppm XTAL_2012