lc72136 Sanyo Semiconductor Corporation, lc72136 Datasheet - Page 6

• Manufacturer Part Number: lc72136
• Description: Frequency Synthesizer Electronic Tuning
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
Symbol
XOUT
FMIN
AMIN
V
V
XIN
CE
DO
CL
DI
DD
SS
Pin No.
(MFP pin numbers
are in parentheses.)
22 (24)
17 (18)
21 (22)
15 (16)
16 (17)
1 (1)
4 (5)
6 (7)
3 (4)
5 (6)
Xtal
Local oscillator
signal input
Local oscillator
signal input
Chip enable
Clock
Input data
Output data
Power supply
Ground
Type
• Crystal oscillator connections (75 kHz)
• The extremely high input impedance of the XIN pins
• FMIN is selected when the serial data input DVS bit is
• The input frequency range is from 10 to 160 MHz.
• The input signal passes through the internal divide-by-
• The divisor can be in the range 272 to 65535. However,
• AMIN is selected when the serial data input DVS bit is
• When the serial data input SNS bit is set to 1:
• When the serial data input SNS bit is set to 0:
• Set this pin high when inputting (DI) or outputting (DO)
• Used as the synchronization clock when inputting (DI) or
• Inputs serial data transferred from the controller to the
• Outputs serial data transferred from the LC72136 to the
• The LC72136 power supply pin. (V
• The power on reset circuit operates when power is first
• The LC72136 ground
means that applications must take the possibility of
leakage into account.
set to 1.
two prescaler and is input to the swallow counter.
since the signal has passed through the divide-by-two
prescaler, the actual divisor is twice the set value.
set to 0.
— The input frequency range is 2 to 40 MHz.
— The signal is directly input to the swallow counter.
— The divisor can be in the range 272 to 65535, and
— The input frequency range is 0.5 to 10 MHz.
— The signal is directly input to a 12-bit programmable
— The divisor can be in the range 4 to 4095, and the
serial data.
outputting (DO) serial data.
LC72136.
controller. The data output is determined by the DOC0 to
DOC2 bits in the serial data.
applied.
LC72136, 72136M
the divisor used will be the value set.
divider.
divisor used will be the value set.
Functions
DD
= 4.5 to 5.5 V)
Circuit configuration
Continued on next page.
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