mc145156 Lansdale Semiconductor, Inc., mc145156 Datasheet - Page 12

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

ML145155
Page 12 of 35
OSC
OSC
* 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
FM
AM
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.
÷20 PRESCALER
KEYBOARD
ML12019
DATA
f in
Figure 2. AM/FM Radio Synthesizer
ML145155
CLK
2.56 MHz
MPU/MCU
CMOS
www.lansdale.com
ML145155
ENB
φ R
φ V
TO DISPLAY
–
+
1/2 MC1458*
LANSDALE Semiconductor, Inc.
TO
AM/FM
OSCILLATORS
Issue A