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Si4421
AC Characteristics (Transmitter)
Symbol
I OUT
P max_50
P max_ant
P out
P sp
P harm
C o
Q o
Parameter
Open collector output DC current
Max. output power delivered to 50
Ohm load over a suitable matching
network (Note 4)
Max. EIRP with suitable selected
PCB antenna (Note 6)
Typical output power
Spurious emission
l f-f sp l > 1 MHz
Harmonic suppression
Output capacitance (set by the
automatic antenna tuning circuit)
Quality factor of the output
capacitance
Conditions/Notes
Programmable
In 433 MHz band
In 868 MHz / 915 MHz bands
In 433 MHz band with monopole antenna
with matching network (Note 4)
In 868 MHz / 915 MHz bands (Note 5)
Selectable in 2.5 dB steps (Note 7)
At max power 50 Ohm load (Note 4)
With PCB antenna (Note 5)
At max power 50 Ohm load (Note 4)
With PCB antenna (Note 5)
In 433 MHz band
In 868 MHz / 915 MHz bands
In 433 MHz band
In 868 MHz / 915 MHz bands
Min
0.5
P max -17.5
2
2.1
13
8
Typ
7
5
7
7
2.6
2.7
15
10
Max
6
P max
-55
-60
-35
-42
3.2
3.3
17
12
Units
mA
dBm
dBm
dBm
dBc
dBc
pF
L out
BR TX
BRA TX
Output phase noise
FSK bit rate
FSK bit rate
100 kHz from carrier, in 868 MHz band
1 MHz from carrier, in 868 MHz band
Via internal TX data register
TX data connected to the FSK input
-80
-103
172
256
dBc/Hz
kbps
kbps
df fsk
FSK frequency deviation
Programmable in 15 kHz steps
15
240
kHz
AC Characteristics (Turn-on/Turnaround timings)
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
Default capacitance bank setting, crystal
t sx
T tx_XTAL_ON
T rx_XTAL_ON
T tx_rx_SYNT_ON
T rx_tx_SYNT_ON
Crystal oscillator startup time
Transmitter turn-on time
Receiver turn-on time
Transmitter – Receiver turnover time
Receiver – Transmitter turnover time
ESR < 50 Ohm (Note 9). Crystal load
capacitance = 16 pF.
Synthesizer off, crystal oscillator on with
10 MHz step
Synthesizer off, crystal oscillator on with
10 MHz step
Synthesizer and crystal oscillator on
during TX/RX change with 10 MHz step
Synthesizer and crystal oscillator on
during RX/TX change with 10 MHz step
2
250
250
150
150
7
ms
μs
μs
μs
μs
AC Characteristics (Others)
Symbol
C xl
t POR
Parameter
Crystal load capacitance,
see crystal selection guide
Internal POR timeout
Conditions/Notes
Programmable in 0.5 pF steps, tolerance
± 10%
After V dd has reached 90% of final value
(Note 8)
Min
8.5
Typ
Max
16
100
Units
pF
ms
Crystal oscillator must be enabled to
t PBt
C inD
Wake-up timer clock accuracy
Digital input capacitance
ensure proper calibration at the start up.
(Note 9)
± 10
2
%
pF
t r , t f
Digital output rise/fall time
15 pF pure capacitive load
10
ns
Notes are on page 12.
11
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相关代理商/技术参数
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EZLC-4421LB 制造商:Silicon Laboratories Inc 功能描述:EZLink 4421 development kit, 433MHz
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EZLC4431B1-D868 功能描述:射频开发工具 EZLink Kit F930 Si4431 Rev B1 868MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
EZLC-4432 HB 功能描述:射频开发工具 EZLink Fast Prototype Kit Hiband RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
EZLC-4432 HB/LB KIT 制造商:Silicon Laboratories Inc 功能描述:
EZLC-4432 LB 功能描述:射频开发工具 EZLink Fast Prototype Kit Lwband RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
EZLC4432B1-D470 功能描述:射频开发工具 EZLink Kit F930 Si4432 Rev B1 470MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V