AMIS-53000 Datasheet, PDF (43/99 Pages) AMI SEMICONDUCTOR – Frequency Agile Transceiver

AMIS-53000 Frequency Agile Transceiver
Data Sheet
6.4.1.7. RF PLL Options
Contains general options for the setup of the RF PLL.
Table 24: RF PLL Options - 0X28 [40]
Bit Name
State
1
7 _{Kicker Calibration Status}
0
6
Temperature
Compensation Curve
1
0
5
4
1
3 Internal Loop Filter
0
1
2 Charge Pump Current
0
11
1 Ivco[1:0]
01
10
00
Comment
The kicker has been calibrated
The kicker has not been calibrated
Use the Type 1 compensation for external crystal with curves similar to Type 1 (See Figure 32)
Use the Type 2 compensation for external crystal with curves similar to Type 2 (See Figure 33)
Enable using the internal loop filter for the PLL (used for calibration)
50uA
25uA
Ivco= 1.2mA
Ivco= 800uA
Ivco= 600uA
Ivco= auto level control
Figure 34: Typical Crystal Temperature Curve for Crystal with Type 1 Characteristics
AMI Semiconductor – Aug. 05, Rev. 1.0
43
www.amis.com