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參數(shù)資料
| 型號： | LUCDA4044AAPE |
| 英文描述： | HEADER, SMC VERT 4WAY |
| 中文描述： | 相位頻率檢測器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 210K |
| 代理商： | LUCDA4044AAPE |
Preliminary Data Sheet
August 1998
LUCDA4044 Phase Frequency Detector
Features
I
Typical propagation delay 9.0 ns (through phase
detector)
I
Includes charge pump and amplifier
I
Available in 14-pin DIP or SONB
12-3519F
Figure 1. Functional Diagram
Applications
I
Frequency synthesizers
I
Clock recovery
Description
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.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PU
R
D1
V
UF
D2
GND
PD
V
CC
U1
U2
DF
AIN
AOU
PHASE
DETECTOR
#1
FRPHASE
DET#2
CHARGE
PUMP
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