mc145170-2 Freescale Semiconductor, Inc, mc145170-2 Datasheet - Page 2

• Manufacturer Part Number: mc145170-2
• Description: Pll Frequency Synthesizer With Serial Interface
• Manufacturer: Freescale Semiconductor, Inc

Introduction
The device features fully programmable R and N counters, an amplifier at the f
an external crystal, a programmable reference output, and both single- and double-ended phase detectors
with linear transfer functions (no dead zones). A configuration (C) register allows the part to be configured
to meet various applications. A patented feature allows the C register to shut off unused outputs, thereby
minimizing noise and interference.
In order to reduce lock times and prevent erroneous data from being loaded into the counters, a patented
jam-load feature is included. Whenever a new divide ratio is loaded into the N register, both the N and R
counters are jam-loaded with their respective values and begin counting down together. The phase
detectors are also initialized during the jam load.
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Operating Voltage Range: 2.7 to 5.5 V
Maximum Operating Frequency:
185 MHz @ V
100 MHz @ V
Operating Supply Current:
0.6 mA @ 3.0 V, 30 MHz
1.5 mA @ 3.0 V, 100 MHz
3.0 mA @ 5.0 V, 50 MHz
5.8 mA @ 5.0 V, 185 MHz
Operating Temperature Range: -40 to 85°C
R Counter Division Range: 1 and 5 to 32,767
N Counter Division Range: 40 to 65,535
Programs through Standard Serial Peripheral Interface (SPI)
See Application Notes AN1207/D and AN1671/D
Contact Freescale for MC145170 control software.
Minimum Supply Voltage
Maximum Input Current, f
Dynamic Characteristics, f
Power-On Reset Circuit
in
in
= 500 mVpp, 4.5 V Minimum Supply
= 500 mVpp, 3.0 V Minimum Supply
Table 1. Comparision of the PLL Frequency Synthesizers
Parameter
MC145170-2 Technical Data, Rev. 5
in
in
(Figure
26)
MC145170-2
Unchanged
Improved
150 µA
2.7 V
MC145170-1
120 µA
2.5 V
in
-
-
pin, on-chip support of
Freescale Semiconductor