NRF52810-QFAA-R datasheet(473/483 Pages) NORDIC

473 / 483 page

Hardware and layout

Important: For PCB reference layouts, see Reference layout nRF52 Series.

Designator

Value

Description

Footprint

C1, C2, C11,

C12

12 pF

Capacitor, NP0, ±2%

0402

0.8 pF

Capacitor, NP0, ±5%

0402

C4, C5, C8

100 nF

Capacitor, X7R, ±10%

0402

N.C.

Not mounted

0402

100 pF

Capacitor, NP0, ±5%

0402

4.7 µF

Capacitor, X5R, ±10%

0603

C10

1.0 µF

Capacitor, X7R, ±10%

0603

3.9 nH

High frequency chip inductor ±5%

0402

10 µH

Chip inductor, IDC,min = 50 mA, ±20%

0603

15 nH

High frequency chip inductor ±10%

0402

nRF52810-QCAA Multi-protocol Bluetooth® low energy, ANT and

2.4 GHz proprietary system on chip

QFN-32

32 MHz

XTAL SMD 2016, 32 MHz, Cl = 8 pF, Total Tol: ±40

ppm

XTAL_2016

32.768 kHz

XTAL SMD 3215, 32.768 kHz, Cl = 9 pF, Total Tol:

±20 ppm

XTAL_3215

Table 106: Bill of material for QCAA QFN32 with DC/DC regulator setup

7.3.5 PCB guidelines

A well designed PCB is necessary to achieve good RF performance. Poor layout can lead to loss in

performance or functionality.

A qualified RF layout for the IC and its surrounding components, including matching networks, can be

downloaded from Reference layout nRF52 Series .

To ensure optimal performance it is essential that you follow the schematics and layout references closely.

Especially in the case of the antenna matching circuitry (components between device pin ANT and the

antenna), any changes to the layout can change the behavior, resulting in degradation of RF performance

or a need to change component values. All reference circuits are designed for use with a 50 Ω single-

ended antenna.

A PCB with a minimum of two layers, including a ground plane, is recommended for optimal performance.

On PCBs with more than two layers, put a keep-out area on the inner layers directly below the antenna

matching circuitry (components between device pin ANT and the antenna) to reduce the stray

capacitances that influence RF performance.

A matching network is needed between the RF pin ANT and the antenna, to match the antenna

impedance (normally 50 Ω) to the optimum RF load impedance for the chip. For optimum performance,

the impedance for the matching network should be set as described in the recommended package

reference circuitry in Reference circuitry on page 468 above.

4430_161 v1.0

473

NRF52810-QFAA-R Datasheet(PDF) 473 Page - Nordic Semiconductor

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