User's Manual
UM-B-045
DA14580 Range extender v.2 reference application
Company confidential
User manual
Revision 1.1
14-September-2015
CFR0012-00 Rev 1
10 of 60
© 2015 Dialog Semiconductor
Table 1: Electrical characteristics
Characteristic
Value
Comments
Battery voltage (V
BAT_3V
)
2.4 V to 3.3 V
Specification tested at typical
voltage of 3.0 V
Operating frequency range
2400 MHz to 2483.5 MHz
Conducted output power
+9.3 dBm
V
BAT_3V
= 3 V, T
A
= +15 to +35 °C
Maximum bypass loss
0.6 dB
V
BAT_3V
= 3 V, T
A
= +15 to +35 °C
Receiver sensitivity
Better than -90 dBm
V
BAT_3V
= 3 V, T
A
= +15 to +35 °C
Peak Tx current
<17mA
Tx Power = +9.3 dBm,
V
BAT_3V
= 3 V, T
A
= +15 to +35 °C
Peak extended-sleep current
<1.6A
V
BAT_3V
= 3 V, T
A
= +15 to +35 °C
General description 4.2
The system consists of the DA14580 Bluetooth Low power SoC, the SKY6611-11 Front-end module
and a discrete low pass filter. The radio front end is connected to a PCB trace antenna as Figure 2
shows.
The power amplifier is controlled by the CTRL1 and CTRL2 signals. CTRL1 is generated from pin
P0_3 and CTRL2 is generated from P0_2 of the DA14580. On pin P0_3 and pin P0_2 the internal
Radio_TXEN and Radio_RXEN signals are software allocated.
DA14580
QFN40
Sky6611-11
Discrete
LPF
cRx
Bias
P0_2 P0_3
buck
VBAT_3V
gpios
RBIAS
cTx
CTRL1
CTRL2
Figure 2: Block diagram
The amplifier circuit is the SKY66111-11 from Skyworks. The CTX pin is used as the TX control
signal and amplifier bias voltage. CTX pin is connected to the amplifier BIAS pin via resistor RBIAS.
The resistor value is adjusted in order to get a Nominal RF Output Power of +9.3 dBm. More
information for the power output adjustment can be found in Sky66111-11 datasheet
2
.