MC145151 Motorola, MC145151 Datasheet - Page 16

• Manufacturer Part Number: MC145151
• Description: Parallel-Input PLL Frequency Synthesizer
• Manufacturer: Motorola

MC145151–2 through MC145158–2
16
NOTES:
BOARD
KEY–
NOTES:
1. For AM: channel spacing = 5 kHz,
2. For FM: channel spacing = 25 kHz,
3. The R and V outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop — Low–Pass Filter Design page
R/T
for additional information. The R and V outputs swing rail–to–rail. Therefore, the user should be careful not to exceed the
common mode input range of the op amp used in the combiner/loop filter.
1. For NAV: f R = 50 kHz,
2. A 32/33 dual modulus approach is provided by substituting an MC12015 for the MC12016. The devices are pin equivalent.
3. A 6.4 MHz oscillator crystal can be used by selecting R = 128 (code 010) for NAV and
4. MC12013 + MC10131 combination may also be used to form the
5. The R and V outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop — Low–Pass Filter Design
+ V
For COM–T: f R = 25 kHz,
For COM–R: f R = 25 kHz,
page for additional information. The R and V outputs swing rail–to–rail. Therefore, the user should be careful not to exceed
the common mode input range of the op amp used in the combiner/loop filter.
+ V
SELECTION
CHANNEL
TO DISPLAY DRIVER (e.g., MC14489)
3.2 MHz (NOTE 3)
OSC in OSC out
V DD
V SS
REF out
V DD
V SS
REF out
OSC in
CMOS MPU/MCU
CMOS MPU/MCU
CLK
3.2 MHz
CLK
TO DISPLAY DRIVER
OSC out
Figure 2. Avionics Navigation or Communication Synthesizer
(e.g., MC14489)
DATA
R = 64 using 10.7 MHz lowside injection, N total = 1946 – 2145.
DATA
R = 128, N total = 4720 – 5439.
RA2
R = 128, using 21.4 MHz highside injection, N total = 5576 – 6295.
MC145156–2
Figure 1. AM/FM Radio Broadcast Synthesizer
RA2
ENB
MC145156–2
R =
COM = 10
NAV = 01
ENB
RA1
NOTES 1
R =
AND 2
RA1
RA0
640 (code 100).
f in
128 (code 010).
RA0
TYPICAL APPLICATIONS
f in
LD
LD
SW1
40/41 DUAL MODULUS PRESCALER
MC
LOCK DETECT SIGNAL
SW1
MC
20/21 DUAL MODULUS PRESCALER
PD out
MC12016 (NOTES 2 AND 4)
LOCK DETECT SIGNAL
SW2
PD out
R
V
SW2
R
V
MC145156–2 Data Sheet Continued on Page 23
MC12019
OPTIONAL
LOOP
ERROR SIGNAL
40/41 prescaler.
+ 12 V
–
+
+ 12 V
–
+
MC33171
NOTE 5
VCO RANGE
1/2 MC1458
R = 256 (code 011) for COM.
NAV: 97.300 – 107.250 MHz
COM–T: 118.000 – 135.975 MHz
COM–R: 139.400 – 157.375 MHz
NOTE 3
AM B +
FM B +
VCO
VCO
MOTOROLA