MAXIM DS4077 Technical data
General Description
The DS4077 is an integrated voltage-controlled crystal
oscillator (VCXO) module designed to provide reference
clock generation in base stations, telecom/datacom, and
wireless applications. The DS4077 is developed using a
fundamental quartz crystal plus a unique integrated circuit design. The internal fundamental quartz crystal
determines the frequency of operation. Custom frequencies are available. Contact the factory for availability.
The DS4077 is designed for use with applications requiring low phase noise and jitter. Jitter performance of better than 1ps RMS is achieved over the 12kHz to 80MHz
range. Phase noise performance of better than
-130dBc/Hz at 1kHz is achieved with this design.
Features
♦ 77.76MHz (f
NOM
) Frequency
♦ 3.135V to 3.465V Operation
♦ Low Jitter: < 1ps RMS
♦ ±69ppm Absolute Pull Range (APR)
♦ Output Options:
LVCMOS Output Buffer
LVDS Complementary Output Buffer
♦ Minimum ±110ppm Tuning Range (+25°C)
♦ 14mm x 9mm x 3.06mm Plastic LGA Package
DS4077
77.76MHz VCXO
______________________________________________ Maxim Integrated Products 1
Pin Configuration
Applications
Rev 1; 12/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
*The top mark includes an “N” for industrial temperature grade devices.
Clock-Data Recovery in Telecom/Datacom
Applications
Data Retiming
Reference Clock Generation in Base Stations
and Wireless Applications
Block Diagram
X1
V
DD
LVCMOS
OUTPUT
VARACTOR
OSC
CONTROL
LVCMOS OPTION SHOWN HERE.
CRYSTAL
VC
X2
DS4077
查询DS33R11DK供应商
PART TEMP RANGE OUTPUT TYPE
DS4077L-0CN -40°C to +85°C
DS4077L-0DN -40°C to +85°C
LVCMOS 77.76
LVDS 77.76
FREQUENCY
) (MHz)
(f
NOM
PIN-PACKAGE TOP MARK*
9 LGA DS4077L-0CN
9 LGA DS4077L-0DN
TOP VIEW
VC
1
N.C.
2
34
SS
( ) LVDS OPTION
TRANSFER-MOLDED PLASTIC PACKAGE
N.C. N.C.
N.C.
7
8
9
6V
DD
5 N.C. (LVDSO-)
LVCMOS (LVDSO+)V
DS4077
LGA
DS4077
77.76MHz VCXO
2 _____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= 3.135V to 3.465V, TA= -40°C to +85°C, unless otherwise noted.) (Typical values at +25°C, VDD= 3.3V, unless otherwise
noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VC, VDD, LVCMOS, LVDSO+, LVDSO- Output ........-0.3V, +3.6V
Operating Temperature Range
(noncondensing) ..............................................-40°C to +85°C
Junction Temperature......................................................+150°C
Thermal Resistance
Junction to Ambient .................................................91.06°C/W
Junction to Case ......................................................44.51°C/W
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature
(reflow, 2 passes max)....See IPC/JEDEC STD-020 Specification
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VDD Operating Supply Range V
VDD Supply Current I
Frequency f
Frequency vs. VDD Sensitivity VDDppm VDD = 3.3V ±5% -3.5 +11.5 ppm/pF
Frequency vs. Load Sensitivity LOADpmm 10pF to 20pF (Note 3) -1 ppm
Frequency vs. Temperature TEMPppm From +25°C -20 +20 ppm
VC Voltage Range VC
Frequency Tuning Sensitivity VC
Tuning Voltage Bandwidth VC
Absolute Pull Range f
VC Input Leakage I
Aging, First Year AGEppm -5 +5 ppm
Aging, Years 0–10 t
LVDS OUTPUT
Output High Voltage V
Output Low Voltage V
Differential Output Voltage V
Output Common-Mode Variation V
Offset Output Voltage V
Differential Output Impedeance R
Output Current I
Output Current I
Output Rise Time (Differential) t
Output Fall Time (Differential) t
DD
DD
OUT
RANGE
SEN
BW
TUNE
LCV
AGE
OHLVDSO
OLLVDSO
ODLVDSO
LVDSOCOM
OFFLVDSO
OLVDSO
VSSLVDSO
LVDSO
RLVDSO
FLVDSO
Output open 20 30 mA
VC = 1.6V, VDD = 3.3V, TA = +25°C
(Note 2)
(Note 3) 10 kHz
VC = 0.3V to 2.8V (Note 2) -69 +69 ppm
VC = 0V to V
Total aging -10 +10 ppm
(Note 4) 1.475 V
(Note 4) 0.925 V
(Note 4) 250 400 mV
(Note 4) 150 mV
(Note 4) 1.125 1.275 V
(Note 3) 80 140 Ω
Short ground 40 mA
Short together (Note 3) 12 mA
20% to 80% (Note 3) 150 ps
80% to 20% (Note 3) 150 ps
3.135 3.3 3.465 V
f
NOM
–8ppm
f
NOM
f
NOM
+8ppm
0.3 1.60 2.8 V
41 164 ppm/V
DD
-500 +500 nA
MHz
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