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PDF PI6LC4840 Data sheet ( Hoja de datos )
| Número de pieza | PI6LC4840 | |
| Descripción | Crystal to LVDS/LVCMOS Frequency Synthesizer | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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PI6LC4840
Crystal to LVDS/LVCMOS Frequency Synthesizer
Features
ÎÎ3.3V supply voltage ± 5%
ÎÎThree banks of outputs:
àà Bank A: 3 25/50MHz pin selectable LVCMOS outputs
àà Bank B: 3 125MHz LVCMOS outputs
àà Bank C: 3 125MHz LVDS outputs
ÎÎ1 25MHz LVCMOS reference clock output (no PLL)
ÎÎ25MHz crystal input (SaRonix-eCera P/N FL2500029)
ÎÎLow 1ps max 12k-20MHz integrated phase noise design (for
125MHz CMOS and LVDS outputs)
ÎÎIndustrial temperature -40°C to 85°C
ÎÎPackage (Pb-free & Green)
àà 32-contact 5x5mm TQFN (ZH)
Description
The PI6LC4840 is an LC VCO based low phase noise design in-
tended for the most demanding Ethernet applications. Common
Ethernet frequencies of 25MHz and 125MHz are supported,
with the 125Mhz having both LVDS and LVCMOS outputs for
maximum flexibility. One 25Mhz LVCMOS non-PLL output is
also available.
Block Diagram
Mode [2:0]
Mode_1 = Pull-up
Mode_0,2 = Pull-down
3
Control
Logic
SaRonix-eCera FL2500029
25MHz
X1
OSC
X2
Phase
Detector
VCO
\M
MR Pull-down
10-0249
1
LVCMOS
- 25MHz or 50MHz
÷20
or ÷10
CMOS - 125MHz
÷4
LVDS 125MHz
÷4
LVCMOS - 25MHz
VDDO_QA
QA0
QA1
QA2
VDDO_QB
QB0
QB1
QB2
VDDO_QC
QC0+
QC0-
QC1+
QC1-
QC2+
QC2-
REF_Out
www.pericom.com
PS9076
01/03/11
1 page  
PI6LC4840
Crystal to LVDS/LVCMOS Frequency Synthesizer
Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested)
Note:
Storage temperature.............................................. -65ºC to +155ºC
3.3V Analog Supply Voltage...................................... -0.5 to +4.6V
ESD Protection (HBM).......................................................... 2000V
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This
is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in
the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
Operating Conditions (VDD = VDDO_QA = VDDO_QB = VDDO_QC = VDDO_REF = 3.3V ±5%, TA = -40°C to 85°C)
Symbol
VDD
VDDA
VDDO_REF, VDDO_QA,
VDDO_QC, VDDO_QB
TA
IDD TOTAL
IDD
IDDA
IDDO_QA
IDDO_QB
IDDO_QC
IDDO_REF
PDISS
Parameters
3.3V Core Supply Voltage
3.3V for Analog
Output Supply Voltage
Ambient Temperature
Sum of all IDD currents flowing into IC
Power Supply Current for VDD pin 15
Analog Supply Current
Bank A LVCMOS Output Supply Current
Bank B LVCMOS Output Supply Current
LVDS Output Supply Current
Reference Supply Current
Power Dissipation
Conditions
Outputs are unloaded
Min.
3.135
VDD - 0.5
Max.
3.465
VDD
3.135
3.465
–40 85
100
15
50
5
10
25
1
0.35
Units
V
°C
mA
W
10-0249
5 www.pericom.com
PS9076
01/03/11
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet PI6LC4840.PDF ] | |
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