LANSDALE Semiconductor, Inc.
ML145157
ML145157
REF
If frequency f is greater than f or if the phase of f is
out
V
R
V
Buffered Reference Oscillator Output (Pin 14)
leading, then error information is provided by φ pulsing low.
V
This output can be used as a second local oscillator, refer-
ence oscillator to another frequency synthesizer, or as the sys-
tem clock to a microprocessor controller.
φ remains essentially high.
R
If the frequency f is less than f or if the phase of fV is
V
R
lagging, then error information is provided by φ pulsing low.
R
φ
remains essentially high.
V
S/R
out
If the frequency of f = f and both are in phase, then both
and φ remain high except for a small minimum time peri-
V
R
Shift Register Output (Pin 12)
φ
V
R
od when both pulse low in phase.
This output can be connected to an external shift register to
provide band switching, control information, and counter pro-
gramming code checking.
f , f
R V
RCounter Output, N Counter Output (Pins 13, 3)
Buffered, divided reference and f frequency outputs. The
in
POWER SUPPLY
f and f outputs are connected internally to the ÷ R and ÷ N
R
V
counter outputs respectively, allowing the counters to be used
independently, as well as monitoring the phase detector inputs.
V
DD
Positive Power Supply (Pin 4)
The positive power supply potential. This pin may range
LD
from +3 to +9 V with respect to V
.
SS
Lock Detector Output (Pin 7)
This output is essentially at a high level when the loop is
V
SS
Negative Power Supply (Pin 6)
locked (f , f of same phase and frequency), and pulses low
R V
when loop is out of lock.
The most negative supply potential. This pin is usually
ground.
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