参数资料
型号: SI4421-A0-FT
厂商: Silicon Laboratories Inc
文件页数: 10/45页
文件大小: 0K
描述: IC TXRX FSK 915MHZ 3.8V 16-TSSOP
标准包装: 96
频率: 433MHz,868MHz,915MHz
数据传输率 - 最大: 256kbps
调制或协议: FSK
应用: ISM
功率 - 输出: 7dbm
灵敏度: -110dBm
电源电压: 2.2 V ~ 3.8 V
电流 - 接收: 15mA
电流 - 传输: 28mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: -40°C ~ 85°C
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
包装: 管件
产品目录页面: 585 (CN2011-ZH PDF)
其它名称: 336-1737-5
Si4421
AC Characteristics (PLL parameters)
Symbol
f ref
Parameter
PLL reference frequency
Conditions/Notes
(Note 2)
Min
9
Typ
10
Max
11
Units
MHz
433 MHz band, 2.5 kHz resolution
430.24
439.75
f o
Receiver LO/Transmitter carrier
frequency
868 MHz band, 5.0 kHz resolution
860.48
879.51
MHz
915 MHz band, 7.5 kHz resolution
900.72
929.27
t lock
PLL lock time
Frequency error < 1kHz
after 10 MHz step
30
μs
t stP
PLL startup time (Note 10)
With a running crystal oscillator
200
300
μs
AC Characteristics (Receiver)
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
mode 0
mode 1
67
134
BW
Receiver bandwidth
mode 2
mode 3
200
270
kHz
mode 4
mode 5
340
400
BER 10 , BW=67 kHz, BR=1.2 kbps,
BR RX
BRA RX
P min
AFC range
FSK bit rate (Note 10)
FSK bit rate (Note 10)
Receiver Sensitivity
AFC locking range
With internal digital filters
With analog filter
-3
868 MHz Band (Note 3)
δ f FSK : FSK deviation in the received
signal
0.6
-110
0.8· δ f FSK
115.2
256
kbps
kbps
dBm
IIP3 inh
IIP3 outh
IIP3 inl
IIP3 outl
P max
Cin
RS a
RS r
RS ps
C ARSSI
RS step
Input IP3
Input IP3
IIP3 (LNA –6 dB gain)
IIP3 (LNA –6 dB gain)
Maximum input power
RF input capacitance
RSSI accuracy
RSSI range
RSSI power supply dependency
Filter capacitor for ARSSI
RSSI programmable level steps
In band interferers in high bands
(868 MHz, 915 MHz)
Out of band interferers l f-f o l > 4 MHz
In band interferers in low band (433
MHz)
Out of band interferers l f-f o l > 4 MHz
LNA: high gain
When input signal level lower than -54
dBm and greater than -100 dBm
0
1
-21
-18
-15
-12
1
±6
46
+35
6
dBm
dBm
dBm
dBm
dBm
pF
dB
dB
mV/V
nF
dB
Until the RSSI signal goes high after
RS resp
P sp_rx
DRSSI response time
Receiver spurious emission
the input signal exceeds the
preprogrammed limit C ARRSI = 4.7 nF
500
-60
μs
dBm
Notes are on page 12.
10
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