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PDF SM5160CM Data sheet ( Hoja de datos )
| Número de pieza | SM5160CM | |
| Descripción | Programable PLL Frequency Synthesizer | |
| Fabricantes | Nippon Precision Circuits Inc | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SM5160CM (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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NIPPON PRECISION CIRCUITS INC.
SM5160CM/DM
Programable PLL Frequency Synthesizer
OVERVIEW
The SM5160CM/DM is a PLL frequency synthesizer
IC with programmable input and reference frequency
dividers.
The SM5160CM/DM features an unlock detector, out-
puts for use with active passive lowpass filters and direct
frequency divider outputs.
The SM5160CM/DM operates from 0.95 to 2.00 V
and 2.0 to 3.3 V supplies and is available in 16-pin
SSOPs.
FEATURES
• Up to 95 MHz input frequency (FIN, VDD= 0.98V)
• Up to 90 MHz input frequency (FIN, VDD= 0.95V)
• Up to 13.0 MHz reference frequency (XIN)
• 1056 to 65535 programmable input frequency
divider ratio
• 20 to 65532 programmable reference frequency
divider ratio (SM5160CM)
• 20 to 8188 programmable reference frequency
divider ratio (SM5160DM)
• Unlock detector
• Outputs for use with active and passive lowpass
filters
• Direct outputs from frequency dividers
• 0.95 to 2.0 V and 2.0 to 3.3 V supplies
• Molybdenum- gate CMOS process
• 16-pin SSOP
PINOUT (Top View)
XIN
XOUT
VDD3
DOA
DOP
VSS
FIN
VDD1
1
8
16 TEST
FR
FV
LE
DATA
CLK
LD
9 VDD2
PACKAGE DIMENSIONS (Unit: mm)
0.6TYP
6.8 0.3
0.36 0.1
0.8
0.15+-
0.10
0.05
0 10
0.4 0.2
SERIES LINEUP
SM5160CM
SM5160DM
Divider range
Counter bits
Divider range
Counter bits
XIN
20 to 65532 (4 step)
14 bit
20 to 8188 (4 step)
11 bit
FIN
1056 to 65535
16 bit
1056 to 65535
16 bit
NIPPON PRECISION CIRCUITS-1
1 page  
SM5160CM/DM
FUNCTIONAL DESCRIPTION
Lowpass Filter Connection
An external lowpass filter connects to DOP or DOA.
The output form the filter is fed to a voltage-controlled
oscillator (VCO) which generates the PLL output.
DOP is intended for use with a passive filter as shown
in figure 1. DOA is intended for use with an active filter
as shown in figure 2.
DOP
R1
VCO
R2
C
Programmable Frequency Divider
The input frequency divider and reference frequency
divider ratios can be programmed using the serial data
input.
Input data consists of 16 data bits, in the order msb to
lsb, followed by a control bit, as shown in figure 3 and 4.
SM5160CM
If the control bit is set to 0, the data is written to the
16-bit latch and then passed to the input frequency
divider.
If the control bit is set to 1, the 2 lsbs are ignored and
the remaining data is written to the 14-bit latch and then
passed to the reference frequency divider.
Figure 1. Passive lowpass filter circuit
DOA
R1
VDD VDD
R2 C RL
VCO
510kΩ
Figure 2. Active lowpass filter circuit
16BIT (N- COUNTER DATA)
ignored
14BIT (R- COUNTER DATA)
1: R-LATCH 0: N-LATCH
Figure 3. Serial data format (SM5160CM)
SM5160DM
If the control bit is set to 0, the data is written to the
16-bit latch and then passed to the input frequency
divider.
If the control bit is set to 1, the 2 lsbs and 3msbs are
ignored and the remaining data is written to the 11-bit
latch and then passed to the reference frequency divider.
16BIT (N- COUNTER DATA)
ignored
11BIT (R- COUNTER DATA)
ignored
1: R-LATCH 0: N-LATCH
Figure 4. Serial data format (SM5160DM)
NIPPON PRECISION CIRCUITS-5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SM5160CM.PDF ] | |
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