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LUCDA4044AAFE-TR Datasheet

  • LUCDA4044AAFE-TR

  • Phase Frequency Detector

  • 6頁

  • AGERE

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Preliminary Data Sheet
August 1998
LUCDA4044 Phase Frequency Detector
Features
s
Applications
s
s
Typical propagation delay 9.0 ns (through phase
detector)
Includes charge pump and amplifier
Available in 14-pin DIP or SONB
Frequency synthesizers
Clock recovery
s
s
Description
14 V
CC
R
D1
V
PU
UF
D2
GND
1
2
3
4
5
6
7
PHASE
FREQUENCY
DETECTOR
#2
CHARGE
PUMP
PHASE
FREQUENCY
DETECTOR
#1
13 U1
12 U2
11 PD
10 DF
9
8
AIN
AOU
The LUCDA4044 consists of two digital phase detec-
tors, a charge pump, and an amplifier. In combination
with a voltage-controlled multivibrator, this device is
useful in a broad range of phase-locked loop (PLL)
applications. The circuit accepts TTL waveforms at
the R and V inputs and generates an error voltage
that is proportional to frequency and/or phase differ-
ence.
Phase detector #1 is intended for use in systems
requiring zero frequency and phase at lock. Phase
detector #2 is used if quadrature lock is desired.
Phase detector #2 can also be used to indicate that
the main loop (utilizing phase detector #1) is out of
lock. This LUCDA4044 is a direct replacement for the
Motorola*
MC4044.
*
Motorola
is a registered trademark of Motorola Inc.
12-3519F
Figure 1. Functional Diagram

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