MC145157DW2R2 Freescale Semiconductor, MC145157DW2R2 Datasheet - Page 7

• Manufacturer Part Number: MC145157DW2R2
• Description: IC SER-IN PLL FREQ SYNTH 16-SOIC
• Manufacturer: Freescale Semiconductor
• Type: PLL Clock/Frequency Synthesizerr

Specifications of MC145157DW2R2

• Pll: Yes
• Input: Clock
• Output: Clock
• Number Of Circuits: 1
• Ratio - Input:output: 1:1
• Differential - Input:output: No/No
• Frequency - Max: 25MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3 V ~ 9 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Frequency-max: 25MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MC145157DW2TR

portion of the cycle). MC is then set back low, the counters
preset to their respective programmed values, and the above
sequence repeated. This provides for a total programmable
divide value (N T ) = N P + A where P and P + 1 represent the
dual–modulus prescaler divide values respectively for high
and low MC levels, N the number programmed into the
counter, and A the number programmed into the A counter.
LD
Lock Detector Output (Pin 28)
phase and frequency). Pulses low when loop is out of lock.
MOTOROLA
Essentially a high level when loop is locked (f R , f V of same
NOTES:
1. Off–chip oscillator optional.
2. The R and V outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop — Low–Pass Filter
10.24 MHz
NOTE 1
+ V
Design 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.
OSC in
V DD
V SS
N9
OSC out
CHANNEL PROGRAMMING
Figure 1. Synthesizer for Land Mobile Radio VHF Bands
Freescale Semiconductor, Inc.
RA2
For More Information On This Product,
“1”
MC145152–2
NO CONNECTS
RA1
“1”
N0
A5
Go to: www.freescale.com
TYPICAL APPLICATIONS
RA0
“1”
LD
N
MC
A0
f in
R
V
LOCK DETECT SIGNAL
POWER SUPPLY
V DD
Positive Power Supply (Pin 3)
from + 3 to + 9 V with respect to V SS .
V SS
Negative Power Supply (Pin 2)
ground.
The positive power supply potential. This pin may range
The most negative supply potential. This pin is usually
R1
R1
R2
C
R2
–
+
MC33171
NOTE 2
C
MC145151–2 through MC145158–2
64/65 PRESCALER
150 – 175 MHz
5 kHz STEPS
MC12017
VCO
7