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AX5031-1-TW30

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
AX5031
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7
AC Characteristics
Table 6. CRYSTAL OSCILLATOR
Symbol Description Condition Min Typ Max Units
f
XTAL
Crystal frequency Note 1, 3 15.5 16 25 MHz
gm
osc
Transconductance oscillator
XTALOSCGM = 0000 1
mS
XTALOSCGM = 0001 2
XTALOSCGM = 0010
default
3
XTALOSCGM = 0011 4
XTALOSCGM = 0100 5
XTALOSCGM = 0101 6
XTALOSCGM = 0110 6.5
XTALOSCGM = 0111 7
XTALOSCGM = 1000 7.5
XTALOSCGM = 1001 8
XTALOSCGM = 1010 8.5
XTALOSCGM = 1011 9
XTALOSCGM = 1100 9.5
XTALOSCGM = 1101 10
XTALOSCGM = 1110 10.5
XTALOSCGM = 1111 11
C
osc
Programmable tuning capacitors at pins
CLK16N and CLK16P
XTALCAP = 000000 default 2
pF
XTALCAP = 111111 33
C
osc−lsb
Programmable tuning capacitors,
increment per LSB of XTALCAP
0.5 pF
A
osc
Oscillator amplitude at pin CLK16P Note 2 0.5 V
RIN
osc
Input DC impedance 10
kW
1. Tolerances and start−up times depend on the crystal used.
2. If an external clock is used, it should be input via an AC coupling at pin CLK16P with the oscillator powered up and XTALCAP = 000000
3. Lower frequencies than 15.5 MHz or higher frequencies than 25 MHz can be used. However, not all typical RF frequencies can be generated.
Table 7. RF FREQUENCY GENERATION SUBSYSTEM (SYNTHESIZER)
Symbol Description Condition Min Typ Max Units
f
REF
Reference frequency Note 1 16, 24 MHz
f
range_hi
Frequency range
BANDSEL = 0 800 940
MHz
f
range_low
BANDSEL = 1 400 470
f
RESO
Frequency resolution 1 Hz
BW
1
Synthesizer loop
bandwidth
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 010
100
kHz
BW
2
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 001
50
BW
3
Loop filter configuration: FLT = 11
Charge pump current: PLLCPI = 010
200
BW
4
Loop filter configuration: FLT = 10
Charge pump current: PLLCPI = 010
500
AX5031
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Table 7. RF FREQUENCY GENERATION SUBSYSTEM (SYNTHESIZER)
Symbol UnitsMaxTypMinConditionDescription
T
set1
Synthesizer settling time
for 1 MHz step
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 010
15 ms
T
set2
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 001
30
T
set3
Loop filter configuration: FLT = 11
Charge pump current: PLLCPI = 010
7
T
set4
Loop filter configuration: FLT = 10
Charge pump current: PLLCPI = 010
3
T
start1
Synthesizer start−up time
if crystal oscillator and
reference are running
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 010
25 ms
T
start2
Loop filter configuration: FLT = 01
Charge pump current: PLLCPI = 001
50
T
start3
Loop filter configuration: FLT = 11
Charge pump current: PLLCPI = 010
12
T
start4
Loop filter configuration: FLT = 10
Charge pump current: PLLCPI = 010
5
PN868
1
Synthesizer phase noise
Loop filter configuration:
FLT = 01
Charge pump current:
PLLCPI = 010
868 MHz, 50 kHz from carrier −85
dBc/Hz
868 MHz, 100 kHz from carrier −90
868 MHz, 300 kHz from carrier −100
868 MHz, 2 MHz from carrier −110
PN433
1
433 MHz, 50 kHz from carrier −90
433 MHz, 100 kHz from carrier −95
433 MHz, 300 kHz from carrier −105
433 MHz, 2 MHz from carrier −115
PN868
2
Synthesizer phase noise
Loop filter configuration:
FLT = 01
Charge pump current:
PLLCPI = 001
868 MHz, 50 kHz from carrier −80
dBc/Hz
868 MHz, 100 kHz from carrier −90
868 MHz, 300 kHz from carrier −105
868 MHz, 2 MHz from carrier −115
PN433
2
433 MHz, 50 kHz from carrier −90
433 MHz, 100 kHz from carrier −95
433 MHz, 300 kHz from carrier −110
433 MHz, 2 MHz from carrier −122
1. ASK, PSK and 1−200 kbps FSK with 16 MHz crystal, 200−350 kbps FSK with 24 MHz crystal.
AX5031
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Table 8. TRANSMITTER
Symbol Description Condition Min Typ Max Units
SBR Signal bit rate
ASK 1 2000
kbps
FSK, (Note 2) 1 350
PSK 10 2000
802.15.4 (DSSS)
ASK and PSK
1 40
802.15.4 (DSSS)
FSK
1 16
PTX
868
Transmitter power @ 868 MHz
TXRNG = 0000 −45
dBm
TXRNG = 0001 −5
TXRNG = 0010 0.4
TXRNG = 0011 4
TXRNG = 0100 6.2
TXRNG = 0101 8
TXRNG = 0110 9.3
TXRNG = 0111 10.3
TXRNG = 1000 11.2
TXRNG = 1001 11.9
TXRNG = 1010 12.5
TXRNG = 1011 13
TXRNG = 1100 13.5
TXRNG = 1101 13.8
TXRNG = 1110 14
TXRNG = 1111 14.5
PTX
433
Transmitter power @ 433 MHz TXRNG = 1111 15.5 dBm
PTX
868−harm2
Emission @ 2
nd
harmonic
(Note 1)
−50
dBc
PTX
868−harm3
Emission @ 3
rd
harmonic −55
1. Additional low−pass filtering was applied to the antenna interface, see section Application Information.
2. 1 − 200 kbps with 16 MHz crystal, 200 − 350 kbps with 24 MHz crystal
Table 9. SPI TIMING
Symbol Description Condition Min Typ Max Units
Tss SEL falling edge to CLK rising edge 10 ns
Tsh CLK falling edge to SEL rising edge 10 ns
Tssd SEL falling edge to MISO driving 0 10 ns
Tssz SEL rising edge to MISO high−Z 0 10 ns
Ts MOSI setup time 10 ns
Th MOSI hold time 10 ns
Tco CLK falling edge to MISO output 10 ns
Tck CLK period Note 1 50 ns
Tcl CLK low duration 40 ns
Tch CLK high duration 40 ns
1. For SPI access during power−down mode the period should be relaxed to 100 ns.
For a figure showing the SPI timing parameters see section Serial Peripheral Interface (SPI).
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

AX5031-1-TW30

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Buy AX5031-1-TW30
Manufacturer:
ON Semiconductor
Description:
RF Transmitter RADIO TRANSMITTER
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