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ABX8038 Schematic ( PDF Datasheet ) - Abracon Corporation

Teilenummer ABX8038
Beschreibung (ABX8037 - ABX8039) Low Phase Noise XO
Hersteller Abracon Corporation
Logo Abracon Corporation Logo 




Gesamt 10 Seiten
ABX8038 Datasheet, Funktion
www.DataSheet4U.com
FEATURES
Less than 0.4ps RMS (12kHz-20MHz) phase
jitter for all frequencies.
Less than 25ps peak to peak jitter for all
frequencies.
Low phase noise output (@ 1MHz frequency
offset
-144dBc/Hz for 106.25MHz
-144dBc/Hz for 156.25MHz
-144dBc/Hz for 212.5MHz
-140dBc/Hz for 312.5MHz,
-131dBC/Hz for 622.08MHz
19MHz-40MHz crystal input.
38MHz-640MHz output.
Available in PECL, LVDS, or CMOS outputs.
Output Enable selector.
2.5V & 3.3V operation.
Available in 3x3 QFN or 16-pin TSSOP
packages.
DESCRIPTION
The ABX803X is a monolithic low jitter and low
phase noise high performance clock, capable of
maintaining 0.4ps RMS phase jitter and CMOS,
LVDS or PECL outputs, covering a wide frequency
output range up to 640MHz. It allows high
performance and high frequency output, using a low
cost fundamental crystal of between 19-40MHz.
The frequency selector pads of ABX803X enable
output frequencies of (2, 4, 8, or 16) * FXIN. The
ABX803X is designed to address the demanding
requirements of high performance applications such
Fiber Channel, serial ATA, Ethernet, SAN, etc.
(Preliminary) ABX8037/38/39
38-640MHz Low Phase Noise XO
PACKAGE PIN ASSIGNMENT
VDDANA
XIN
XOUT
SEL2^
OE_CTRL
DNC
GNDANA
LP
1
2
3
4
5
6
7
8
16 SEL0^
15 SEL1^
14 GNDBUF
13 QBAR
12 VDDBUF
11 Q
10 GNDBUF
9 LM
16-pin TSSOP
3x3 QFN
XOUT
SEL2^
OE_CTRL
DNC
12 11 10 9
13 8
14 7
ABX803X
15 6
16 5
1234
GNDBUF
QBAR
VDDBUF
Q
Note1: QBAR is used for single ended CMOS output.
Note2: ^ Denotes internal pull up resistor.
BLOCK DIAGRAM
XIN
XOUT
XTAL
OSC
VCO
Divider
Phase
Detector
Charge
Pump
L o+o p
Filter
VCO
(FXiNx16)
Output
Divider
(1,2,4,8)
QBAR
Q
Performance Tuner
OE
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 1






ABX8038 Datasheet, Funktion
www.DataSheet4U.com
(Preliminary) ABX8037/38/39
38-640MHz Low Phase Noise XO
8. LVDS Electrical Characteristics
PARAMETERS
Output Differential Voltage
VDD Magnitude Change
Output High Voltage
Output Low Voltage
Offset Voltage
Offset Magnitude Change
Power-off Leakage
Output Short Circuit Current
SYMBOL
VOD
VOD
VOH
VOL
VOS
VOS
IOXD
IOSD
CONDITIONS
RL = 100
(see figure)
Vout = VDD or GND
VDD = 0V
MIN.
247
-50
0.9
1.125
0
TYP.
355
1.4
1.1
1.2
3
±1
-5.7
MAX.
454
50
1.6
1.375
25
±10
-8
UNITS
mV
mV
V
V
V
mV
uA
mA
9. LVDS Switching Characteristics
PARAMETERS
Differential Clock Rise Time
Differential Clock Fall Time
SYMBOL
tr
tf
CONDITIONS
RL = 100
CL = 10 pF
(see figure)
MIN.
0.2
0.2
TYP.
0.7
0.7
MAX.
1.0
1.0
UNITS
ns
ns
LVDS Levels Test Circuit
OUT
OUT
VOD
50
VOS
50
LVDS Switching Test Circuit
OUT
CL = 10pF
VDIFF
OUT
CL = 10pF
RL = 100
LVDS Transistion Time Waveform
OUT
OUT
0V (Differential)
VDIFF
0V
20%
80%
tR
80%
20%
tF
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 6

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