sta011 STMicroelectronics, sta011 Datasheet - Page 28

• Manufacturer Part Number: sta011
• Description: L-band Rf Front-end For Digital Radio
• Manufacturer: STMicroelectronics

Programming specifications
6.1.4
6.1.5
6.1.6
28/38
VCO enable
Table 22.
The internal RFVCO can also be enabled via hardware mode through the ENRFOSC pin.
With the ENRFOSC pin high the software mode is disabled and the RFVCO is turned ON;
with the ENRFOSC pin low the software mode is enabled, depending on the truth table
described above .
VCO output voltage
Table 23.
Charge pump current setting
Table 24.
D90
…
0
0
1
.
D93
D95
0
0
1
1
1
1
D89
…
0
1
1
VCO enable
VCO output voltage
Charge pump current
D92
0
1
0
1
D88
D94
…
0
1
1
0
1
Vout=1Vpp
Vout=2Vpp
Vout=3Vpp
Vout=4Vpp
I
…….
I
…….
I
CP
CP
CP
Internal RFVCO
External RFLO
=300uA
=400uA
=600uA
Description
Description
Description
Startup configuration
Startup configuration
Startup configuration
Notes
Notes
Notes
STA011