mc145156 Lansdale Semiconductor, Inc., mc145156 Datasheet - Page 16

• Manufacturer Part Number: mc145156
• Description: Pll Frequency Synthesizer Family
• Manufacturer: Lansdale Semiconductor, Inc.

ML145156
Page 16 of 35
NOTES:
BOARD
KEY–
NOTES:
1. For AM: channel spacing = 5 kHz,
2. For FM: channel spacing = 25 kHz,
3. The φ R and φ 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 φ R and φ 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
3. A 6.4 MHz oscillator crystal can be used by selecting
4. ML12013 + MC10131 combination may also be used to form the
5. The φ R and φ 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 φ R and φ 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
32/33 dual modulus approach is provided by substituting an ML12015 for the ML12016. The devices are pin equivalent.
TO DISPLAY DRIVER (e.g., MC14489)
3.2 MHz (NOTE 3)
V DD
V SS
REF out
OSC in OSC 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
÷
DATA
R = 64 using 10.7 MHz lowside injection, N total = 1946 – 2145.
÷
÷
RA2
ML145156
R = 128, N total = 4720 – 5439.
Figure 1. AM/FM Radio Broadcast Synthesizer
R = 128, using 21.4 MHz highside injection, N total = 5576 – 6295.
RA2
ENB
ML145156
÷
COM = 10
NAV = 01
ENB
÷
RA1
NOTES 1
R =
AND 2
R =
RA1
RA0
÷
f in
÷
640 (code 100).
RA0
TYPICAL APPLICATIONS
128 (code 010).
f in
LD
LD
÷
SW1
www.lansdale.com
MC
40/41 DUAL MODULUS PRESCALER
÷
LOCK DETECT SIGNAL
SW1
MC
20/21 DUAL MODULUS PRESCALER
PD out
ML12016 (NOTES 2 AND 4)
LOCK DETECT SIGNAL
ML145156
SW2
PD out
φ R
φ V
÷
SW2
R = 128 (code 010) for NAV and
φ R
φ V
ML145156 Data Sheet Continued on Page 23
ML12019
OPTIONAL
LOOP
ERROR SIGNAL
÷
40/41 prescaler .
+ 12 V
+
–
+ 12 V
–
+
MC33171
NOTE 5
VCO RANGE
1/2 MC1458
÷
NAV: 97.300 – 107.250 MHz
COM–T: 118.000 – 135.975 MHz
COM–R: 139.400 – 157.375 MHz
NOTE 3
R = 256 (code 011) for COM.
AM B +
LANSDALE Semiconductor, Inc.
FM B +
VCO
VCO
Issue A