MC145165
MOTOROLA
1
' $ )&"#
" " %
"!%(($#)"
CMOS
The MC145165 is a low–voltage dual phase–locked loop (PLL) frequency
synthesizer especially designed for CT–1 cordless phone applications world-
wide. This frequency synthesizer is also for any product with a frequency
operation at 60 MHz or below.
This chip is suitable for any portable RF products which use two 1.2 V
chargeable Ni–Cd batteries. The feature of low operating voltage can reduce
the current consumption and the cost of the portable RF products by reducing
the number of batteries used.
The device features fully programmable receive, transmit, reference, and
auxiliary reference counters accessed through an MCU serial interface. This
feature allows this device to operate in any CT–1 cordless phone application.
The device consists of two independent phase detectors for transmit and
receive loops. A common reference oscillator, driving two independent
reference frequency counters, provides independent reference frequencies for
transmit and receive loops. The auxiliary reference counter allows the user to
select an additional reference frequency for receive and transmit loops if
required. All of the functions and features of the MC145165 are fully compatible
with the MC145162.
Operating Voltage Range: 1.8 to 3.6 V
Operating Temperature Range: – 40 to +
75
°
C
Operating Power Consumption: 1.5 mA @ 1.8 V
Maximum Operating Frequency: 60 MHz
Minimum Input Sensitivity: 60 MHz @ 200 mV p–p, VDD = 1.8 V
Three or Four Pins Used for Serial MCU Interface
Built–In MCU Clock Output with Frequency of Reference Oscillator
Power Saving Mode Controlled by MCU
Lock Detect Signal
On–Chip Reference Oscillator Supports External Crystals to 16.0 MHz
Reference Frequency Counter Division Range: 16 to 4095
Auxiliary Reference Frequency Counter Division Range: 16 to 16,383
Transmit Counter Division Range: 16 to 65,535
Receive Counter Division Range: 16 to 65,535
3/
4
NOT RECOMMENDED FOR NEW DESIGNS;
PRODUCT TO BE PHASED OUT.
The MC145162 is a drop–in replacement for supply voltages
≥
2.5 V.
Order this document
by MC145165/D
SEMICONDUCTOR TECHNICAL DATA
D SUFFIX
SOG PACKAGE
CASE 751B
ORDERING INFORMATION
MC145165P
MC145165D
Plastic DIP
SOG Package
P SUFFIX
PLASTIC DIP
CASE 648
PIN ASSIGNMENT
16
1
16
1
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
VDD
TxPS/fTx
fin–T
TxPDout
LD
fin–R
RxPDout
RxPS/FRx
ENB
Din
ADin
CLK
OSCout
OSCin
VSS
MCUCLK
REV 1
1/98