UM-B-074
DA1468x Range Extender Daughterboard
User Manual
Revision 1.1
17-Apr-2018
CFR0012
38 of 60
© 2018 Dialog Semiconductor
15.1.1
Receiver Sensitivity
15.1.1.1
Test Description
In this test the BLE RX sensitivity of DA14680/681 range extender (224-23-D) was measured.
15.1.1.2
Test Setup
The DA14680/681 range extender was mounted on a PRO-motherboard. The R&S
®
CBT Bluetooth
®
Tester from Rohde & Schwarz was used. An RF cable assembly was connected to the J3 RF Switch
connector (MM8130-2600 by Murata) and at the other end through an attenuator to the R&S
CBT
Bluetooth Tester. In order to evaluate the RF sensitivity,
ble_external_host
firmware was used. The
results from a dirty transmitter are reported below.
The RX tests were performed using the maximum payload length: 255 bytes.
15.1.1.3
Test Results
The conducted RF sensitivity with a dirty transmitter shows that the sensitivity is better than -94 dBm
for all channels for maximum payload of 255 bytes.
Table 18: RX Sensitivity for VCC2 = 1.2 V (
Note 1
)
RX Sensitivity (dBm)
Channel 0
Channel 19
Channel 39
-95.50
-95.20
-94.50
Note 1
VCC1 = 1.8 V, VDD = 3 V, P
IN
= -2 dBm, Payload size = 255.
