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PDF PL585-28 Data sheet ( Hoja de datos )
| Número de pieza | PL585-28 | |
| Descripción | 19MHz to 250MHz Low Phase-Noise VCXO | |
| Fabricantes | Micrel | |
| Logotipo |  |
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(Preliminary) PL585-28
19MHz to 250MHz Low Phase-Noise VCXO
FE AT UR E S
< 0.6ps RMS phase jitter (12kHz to 20MHz)
at 155.52MHz
30ps max peak to peak period jitter
Ultra Low-Power Consumption
< 90mA @155MHz PECL output
<10A at Power Down (PDB) Mode
Input Frequency:
Fundamental Crystal: 19MHz to 40MHz
Output Frequency:
19MHz to 250MHz output.
Output type: LVPECL
High Linearity VCXO: <10% linearity
Pullability: ±150 ppm
Programmable OE input polarity selection.
Power Supply: 3.3V, ±10%
Operating Temperature Ranges:
Commercial: 0C to 70C
Industrial: -40C to 85C
Available in Die or Wafer
PIN CONFIGURATION
65 mil
VCON/
9
SCLK
8
Die ID
OE/PDB/
SDIO
DNC
10
11
GND_ANA
GND_DIG
GND_BUF
12
13
14
(0,0)
PL585
(1650,2250)
7
6 VDD_ANA
5 VDD_DIG
4 VDD_BUF
3 QB
2 VDD_BUF
1Q
DESCRIPTION
The PL585-28 is a Dual LC core monolithic IC clock,
capable of maintaining sub-picoseconds RMS phase
jitter, while covering a wide frequency output range
up to 250MHz, without the use of external
components. The high performance and high
frequency output is achieved using a low cost
fundamental crystal of between 19MHz and 40 MHz.
The PL585-28 is designed to address the demanding
requirements of high performance applications such
as Fiber Channel, serial ATA, Ethernet, SAN,
SONET/SDH, etc.
BLOCK DIAGRAM
OE/PDB
XIN/REF
XOUT
VCON
(Default pre-programmed output path)
Xtal
Osc
PD/CP
LF – HF
LCVCOs
Varicap
Programmable Function
M Divider
(5 bit)
Pre-scalar
4/6
/2
P Divider
(4 bit)
/2
Q
QB
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 12/16/11 Page 1
1 page  
(Preliminary) PL585-28
19 MHz to 250MHz Low Phase-Noise VCXO
3. VOLTAGE CONTROLLED CRYSTAL OSCILLATOR
PARAMETERS
VCXO Pullability
VCXO Tuning Characteristic
Pull Range Linearity
VCON Pin Input Impedance
VCON Modulation BW
SYMBOL
CONDITIONS
VCON=1.65V, 1.65V
XTAL C1>10fF and C0/C1<250
0V VCON 3.3V, -3dB
MIN TYP MAX UNITS
150
100
10
18
ppm
ppm/V
10 %
MΩ
kHz
4. CRYSTAL SPECIFICATIONS
PARAMETERS
SYMBOL
CONDITIONS
Crystal Resonator Frequency
Crystal Cload
Shunt Capacitance
Crystal Pullability
Recommended ESR
FXIN
CL_ Crysta l
C0_ Crysta l
C0/C1
RE
Parallel Fundamental Mode
VDD = 3.3V, VCON = 1.65V
AT cut
AT cut
MIN TYP MAX UNITS
19 40 MHz
8.5
3.5 pF
250 --
50 Ω
5. JITTER SPECIFICATIONS
PARAMETERS
FREQUENCY
CONDITIONS
MIN TYP MAX UNITS
RMS Phase Jitter
Period Jitter, Pk-to-Pk
155.52MHz 10kHz to 20MHz, XIN=38.88MHz
155.52MHz 10K cycles, XIN=38.88MHz
0.56
25
ps
ps
6. PHASE NOISE SPECIFICATIONS
PARAMETERS
Freq.
(MHz)
@
10Hz
Phase Noise, relative
to carrier (typical)
155.52
-56
Note: Phase Noise measured at VCON = 1.65V
@
100Hz
-86
@
1KHz
-112
@@
10KHz 100KHz
-123 -127
@
1MHz
136
@
10MHz
147
UNITS
dBc/Hz
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 12/16/11 Page 5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet PL585-28.PDF ] | |
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