TLC2942_06 Datasheet, PDF (24/29 Pages) Texas Instruments – HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK

TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
APPLICATION INFORMATION
The capacitor, C1, is usually chosen between 1 µF and 0.1 µF to allow for reasonable resistor values and
physical capacitor size. In this example, C1 is chosen to be 0.1 µF and the corresponding R1 and R2 calculated
values are listed in Table 9.
Table 9. Calculated Values
PARAMETER
Natural angular frequency
K = (KV • Kp)/N
Lag-lead filter
Calculated value
Nearest standard value
Calculated value
Nearest standard value
Selected value
SYMBOL
ω_n
R1
R2
C1
VALUE
45000
3.277
15870
16000
308
300
0.1
UNITS
rad/sec
Mrad/sec
Ω
Ω
µF
24
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