AX-SFUS Datasheet, PDF (8/20 Pages) ON Semiconductor – Ultra-Low Power

AX−SFUS, AX−SFUS−API
Table 5. LOGIC
Symbol
Description
Digital Inputs
V_T+
Schmitt trigger low to high threshold point
V_T−
Schmitt trigger high to low threshold point
V_IL
Input voltage, low
V_IH
Input voltage, high
V_IPA
Input voltage range, GPIO[3:0]
V_IPBC
Input voltage range, GPIO[9:4], UARTRX
I_L
Input leakage current
R_PU
Programmable Pull−Up Resistance
Digital Outputs
I_OH
Output Current, high
Ports GPIO[9:0], UARTTX, TXLED, RXLED,
TXLED, CPULED
I_OL
Output Current, low
GPIO[9:0], UARTTX, TXLED, RXLED, TXLED,
CPULED
I_OZ
Tri−state output leakage current
Condition
Min
Typ
Max
Units
VDD_IO = 3.3 V
1.55
V
1.25
V
0.8
V
2.0
V
−0.5
VDD_IO
V
−0.5
5.5
V
−10
10
mA
65
kW
V_OH = 2.4 V
8
mA
V_OL = 0.4 V
8
mA
−10
10
mA
AC Characteristics
Table 6. TCXO REFERENCE INPUT
Symbol
Description
Condition
Min
Typ
Max
Units
f_TCXO
TCXO frequency
A passive network between the TCXO output
48
and the pins CLKP and CLKN is required.
For detailed TCXO network recommendations
depending on the TCXO output swing refer to
the AX5043 Application Note: Use with a
TCXO Reference Clock.
For TCXO recommendations see the
AX−SFUS Application Note: Sigfox Compliant
Reference Design
MHz
Table 7. TRANSMITTER
Conditions for transmitter specifications unless otherwise specified with the antenna network from AX−SFUS Application Note: Sigfox
Compliant Reference Design and at 902.2 MHz.
Symbol
Description
Condition
Min
Typ
Max
Units
SBR
Signal bit rate
100
bps
PTX
Highest Transmitter output power
AT$CW=902200000,1,24
24
dBm
dTX_temp
Transmitter power variation vs.
temperature
−40°C to +85°C
±0.5
dB
dTX_Vdd
PTX_harm2
PTX_harm3
PTX_harm4
Transmitter power variation vs. VDD_IO
Emission @ 2^nd harmonic
Emission @ 3^rd harmonic
Emission @ 4^th harmonic
1.8 to 3.6 V
±0.5
dB
−51
dBc
−63
−84
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