lc72130m Sanyo Semiconductor Corporation, lc72130m Datasheet - Page 15

• Manufacturer Part Number: lc72130m
• Description: Am/fm Pll Frequency Synthesizer
• Manufacturer: Sanyo Semiconductor Corporation

Programmable Divider
Note: * Don’t care.
1. Programmable Divider Calculation Examples
A
B
C
• FM, 50 kHz steps (DVS = 1, SNS = *, FMIN selected)
• SW, 5 kHz steps (DVS = 0, SNS = 1, AMIN high speed side selected)
• MW, 10 kHz steps (DVS = 0, SNS = 0, AMIN low-speed side selected)
FM RF = 90.0 MHz (IF = +10.7 MHz)
FM VCO = 100.7 MHz
PLL fref = 25 kHz (R0 to R1 = 1, R2 to R3 = 0)
100.7 MHz (FM VCO) 25 kHz (fref) 2 (FMIN: divide-by-two prescaler) = 2014
SW RF = 21.75 MHz (IF = +450 kHz)
SW VCO = 22.20 MHz
PLL fref = 5 kHz (R0 = R2 = 0, R1 = R3 = 1)
22.2 MHz (SW VCO) 5 kHz (fref) = 4440
MW RF = 1000 kHz (IF = +450 kHz)
MW VCO = 1450 kHz
PLL fref = 10 kHz (R0 to R2 = 0, R3 = 1)
1450 kHz (MW VCO) 10 kHz (fref) = 145
DVS
1
0
0
SNS
1
0
*
Input pin
FMIN
AMIN
AMIN
LC72130, 72130M
272 to 65535
272 to 65535
Set divisor
1158 (HEX)
4 to 4095
091 (HEX)
Twice the set value
The set value
The set value
Actual divisor: N
07DE (HEX)
Input frequency range (MHz)
10 to 160
0.5 to 10
2 to 40
No. 4973-15/22