MC145152-2 Freescale Semiconductor, Inc, MC145152-2 Datasheet - Page 10

• Manufacturer Part Number: MC145152-2
• Description: Parallel-input Pll Frequency Synthesizer
• Manufacturer: Freescale Semiconductor, Inc

MC145152-2 Parallel-Input (Interfaces with Dual-Modulus Prescalers)
divide values respectively for high and low MC levels, N the number programmed into the ÷ N counter,
and A the number programmed into the ÷ A counter.
LD
Lock Detector Output (Pin 28)
Essentially a high level when loop is locked (f
is out of lock.
2.2.3
V
Positive Power Supply (Pin 3)
The positive power supply potential. This pin may range from + 3 to + 9 V with respect to V
V
Negative Power Supply (Pin 2)
The most negative supply potential. This pin is usually ground.
2.3
10
NOTES:
DD
SS
1. Off-chip oscillator optional.
2. The φ
for additional information. The φ
mon mode input range of the op amp used in the combiner/loop filter.
R
Typical Applications
and φ
10.24 MHz
NOTE 1
Power Supply
+ V
V
outputs are fed to an external combiner/loop filter. See the Phase-Locked Loop - Low-Pass Filter Design page
OSC
V
V
N9
DD
SS
in
OSC
Figure 7. Synthesizer for Land Mobile Radio VHF Bands
CHANNEL PROGRAMMING
out
R
and φ
MC145151-2 and MC145152-2 Technical Data, Rev. 5
MC145152-2
“1"
NO CONNECTS
RA2
V
outputs swing rail-to-rail. Therefore, the user should be careful not to exceed the com-
“1"
N0
RA1
A5
“1"
RA0
R
, f
LD
V
MC
A0
φ
φ
f
R
V
in
of same phase and frequency). Pulses low when loop
LOCK DETECT SIGNAL
R1
R1
R2
C
R2
-
+
C
NOTE 2
÷ 64/65 PRESCALER
Freescale Semiconductor
150 - 175 MHz
5 kHz STEPS
VCO
SS
.