BAL-NRF01D3 preview

AN4111

2/17

DocID023194 Rev4

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BAL-NRF01D3 preview

1.1

Features

 50  nominal input / conjugate match to Nordic Semiconductor chips nRF24LE1 QFN32,

nRF24AP2-1CH, nRF24AP2-8CH, nRF51422-QFAA and nRF51822-QFAA

 Low insertion loss

 Low amplitude imbalance

 Low phase imbalance

Benefits

 Very low profile: < 595 µm after reflow

 High RF performance

 RF BOM and area reduction

Applications

 2.45 GHz impedance matched balun filter

 Optimized for Nordic's chip set nRF24LE1/AP2 and nRF51 series

1.2

Description

STMicroelectronics BAL-NRF01D3 is an ultra miniature balun. The BAL-NRF01D3

integrates matching network and harmonics filter. Matching impedance has been

customized for the following Nordic Semiconductor circuits: nRF24LE1 QFN-32 pins,

nRF24AP2-1CH, nRF24AP2-8CH, nRF51422-QFAA and nRF51822-QFAA.

The BAL-NRF01D3 uses STMicroelectronics IPD technology on non-conductive glass

substrate which optimize RF performances.

The BAL-NRF01D3 has been tested and approved by Nordic Semiconductor in their

nRF2723 and nRF2752 nRFgo modules.

1.3

Flip chip package

Figure 1. Package 5 bumps

Figure 2. Pin out diagram (top view)

Lead-free Flip-Chip package

5 bumps

SE

DIFF

DIFF

VCC

GND

A

B

C

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2

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