ML145155
LANSDALE Semiconductor, Inc.
ML145155
2.56 MHz
φ
TO
AM/FM
OSCILLATORS
–
+
f
R
in
ML12019
÷20 PRESCALER
FM
OSC
ML145155
CLK
φ
V
1/2 MC1458*
AM
OSC
DATA
ENB
CMOS
MPU/MCU
KEYBOARD
TO DISPLAY
* The φ and φ outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop – Low–Pass Filter Design page
R
V
foradditionalinformation.Theφ andφ outputsswingrail–to–rail. Therefore, theusershouldbecarefulnottoexceedthecommon
R
V
mode input range of the op amp used in the combiner/loop filter.
Figure 2. AM/FM Radio Synthesizer
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