micrf405 Micrel Semiconductor, micrf405 Datasheet - Page 35

• Manufacturer Part Number: micrf405
• Description: Micrf405 290mhz To 980mhz Ism Band Ask/fsk Transmitter
• Manufacturer: Micrel Semiconductor

April 2006
Micrel
ASK_EN
Bit_IO_en
ClkOut_en
0
0
0
0
1
1
1
1
PA2
0
1
1
0
1
1
1
1
0
0
0
0
1
1
1
1
Modulation1
Sync_en
ClkOut_1
X
0
1
1
0
0
1
1
0
0
1
X
0
0
1
1
PA1
0
0
1
1
0
0
1
1
State
DCLK pin on, RDY
DCLK pin off
DCLK pin on, DATACLK
Modulation0
ClkOut_0
X
0
1
0
1
0
1
0
1
0
1
0
1
PA0
0
1
0
1
0
1
0
1
State
CLKOUT off
CLKOUT on
CLKOUT on
CLKOUT on
CLKOUT on
State
Closed loop VCO-modulation
Open loop VCO-modulation
Modulation by A,M and N
Not used
ASK modulation with spreading code applied to
VCO. Not recommended.
ASK modulation with spreading code applied to
VCO. Not recommended.
ASK modulation with spreading code applied to
internal modulation by A, M and M
ASK modulation
Table 23. Synchronizer Mode
Table 21. Power Amplifier.
Table 22. Output Clock.
Table 24. Modulation.
State
21dB attenuation or PA off if PA_LDc_en=0
18dB attenuation
15dB attenuation
12dB attenuation
9dB attenuation
6dB attenuation
3dB attenuation
Max output
35
Byte ready, RDY, signal from databyte
Comments
Transparent transmission of data
Bit-clock is generated by transmitter
Comments
Output is 0 volt.
The XCO frequency is divided by 16.
The XCO frequency is divided by 8.
The XCO frequency is divided by 4.
The XCO frequency is divided by 2.
Comments
VCO is phase-locked
VCO is free-running
Modulation inside PLL
VCO is phase-locked
VCO is free-running
Modulation inside PLL
VCO is phase-locked
MICRF405
[phone]
M9999-041906