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) * F
XIN
. The
ABX803X is designed to address the demanding
requirements of high performance applications such
Fiber Channel, serial ATA, Ethernet, SAN, etc.
XOUT
SEL2^
OE_CTRL
DNC
12
13
14
15
16
1
11
SEL1^
9
XIN
•
•
•
•
•
•
16-pin TSSOP
3x3 QFN
8
7
GNDBUF
QBAR
VDDBUF
Q
ABX803X
2
3
4
6
5
GNDANA
Note1: QBAR is used for single ended CMOS output
.
Note2: ^ Denotes internal pull up resistor.
BLOCK DIAGRAM
VCO
Divider
Charge
Pump
+
Loop
Filter
Output
Divider
(1,2,4,8)
GNDBUF
LP
LM
XIN
XOUT
XTAL
OSC
Phase
Detector
VCO
(F
XiN
x16)
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
(Preliminary)
ABX8037/38/39
38-640MHz Low Phase Noise XO
OUTPUT ENABLE LOGICAL LEVELS
Part #
ABX8038 (PECL)
ABX8037 & 39 (CMOS or LVDS)
OE
0 (Default)
1
0
1 (Default)
State
Output enabled
Tri-state
Tri-state
Output enabled
PIN DESCRIPTIONS
Name
VDDANA
XIN
XOUT
SEL2
OE_CTRL
DNC
GNDANA
LP
LM
GNDBUF
Q
VDDBUF
QBAR
GNDBUF
SEL1
SEL0
TSSOP
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3x3mm QFN
Pin number
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
Type
P
I
O
I
I
-
P
-
-
P
O
P
O
P
I
I
VDD for analog Circuitry.
Description
Crystal input pin. (See Crystal Specifications on page 3).
Crystal output pin. (See Crystal Specifications on page 3).
Output frequency Selector pin.
Output enable control pin. (See OE_CTRL Logic Levels on page
1).
Do Not Connect
Ground for analog circuitry.
Tuning inductor connection. The inductor is recommended to be
a high Q small size 0402 or 0603 SMD component, and must be
placed between LP and adjacent LM pin. Place inductor as close
to the IC as possible to minimize parasitic effects and to
maintain inductor Q.
GND connection for output buffer circuitry.
PECL or LVDS output.
VDD connection for output buffer circuitry. VDDBUF should be
separately decoupled from other VDDs whenever possible.
Complementary PECL, LVDS output; Or single ended CMOS
output.
GND connection for output buffer circuitry.
Output frequency Selector pin.
Output frequency Selector pin.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
9/1/05 Page 2
(Preliminary)
ABX8037/38/39
38-640MHz Low Phase Noise XO
FREQUENCY SELECTION TABLE
SEL2
0
0
0
0
1
1
1
1
SEL1
0
0
1
1
0
0
1
1
SEL0
0
1
0
1
0
1
0
1
Selected Multiplier/Output Frequency
VCO Max*
VCO Min*
Reserved
Reserved
Fin x 2
Fin x 8
Fin x 16
Fin x 4
All SEL pads have internal pull-ups (default value is ‘1’). Bond to GND to set to 0.
* Special Test Modes to help selecting the inductor value for the target output frequency.
PERFORMANCE TUNING & INDUCTOR VALUE SELECTION
Please refer to Abracon’s “Tuning Assistant” software to automatically calculate the optimum inductor values. In
addition, the chart below could be used as a reference for quick inductor value selection.
Use the special test modes “VCO Max” and “VCO Min” to determine the optimum inductor value. “VCO Max”
represents the high end of the VCO range and “VCO Min” represents the low end of the VCO range. The output
frequency in the “VCO Max” and “VCO Min” test modes is VCO/16. This means that the output frequencies are
around the crystal frequency that will be used. The optimum inductor value is where the target crystal frequency
is closest to the middle between the “VCO Max” and “VCO Min” output frequencies. In this case the VCO will lock
in the middle of its tuning range with maximum margin on either side.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
9/1/05 Page 3
(Preliminary)
ABX8037/38/39
38-640MHz Low Phase Noise XO
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
SYMBOL
V
DD
V
I
V
O
T
S
T
A
T
J
MIN.
-0.5
-0.5
-65
-40
MAX.
4.6
V
DD
+0.5
V
DD
+0.5
150
85
125
260
2
UNITS
V
V
V
°C
°C
°C
°C
kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other
conditions above the operational limits noted in this specification is not implied.
*
Note:
Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. Crystal Specifications
PARAMETERS
Crystal Resonator Frequency
Crystal Loading Rating
Crystal Shunt Capacitance
Recommended ESR
SYMBOL
F
XIN
C
L (xtal)
C
0 (xtal)
R
E
CONDITIONS
Parallel Fundamental Mode
MIN.
19
TYP.
17.7
MAX.
40
5
30
UNITS
MHz
pF
pF
Ω
AT cut
Note:
Crystal Loading rating: 17.7pF is the loading the crystal sees from the XO chip. It is assumed that the crystal will be at nominal frequency at this
load. If the crystal requires less load to be at nominal frequency, then a capacitor can placed in series with the crystal. If the crystal requires more
load to be at nominal frequency, capacitors can be placed from XIN and XOUT to ground. This however may reduce the oscillator gain.
3. General Electrical Specifications
PARAMETERS
Supply Current,
Dynamic (with
Loaded Outputs)
Operating Voltage
Output Clock
Duty Cycle
Short Circuit
Current
Note:
CMOS operation is not advised above 200MHz with 15pF load; and 320MHz with 10pF load.
SYMBOL
I
DD
V
DD
CONDITIONS
PECL/LVDS/CMOS
PECL/LVDS
38MHz<Fout<320MHz
320MHz<Fout<640MHz
MIN.
TYP.
MAX.
65/45/30
90/70
UNITS
mA
V
%
mA
@ 50% V
DD
(CMOS)
@ 1.25V (LVDS)
@ V
DD
– 1.3V (PECL)
2.25
45
45
45
50
50
50
±50
3.63
55
55
55
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
9/1/05 Page 4
(Preliminary)
ABX8037/38/39
38-640MHz Low Phase Noise XO
4. Jitter Specifications
PARAMETERS
CONDITIONS
FREQUENCY
106.25MHz
156.25MHz
212.5MHz
312.5MHz
622.08MHz
106.25MHz
156.25MHz
212.5MHz
312.5MHz
622.08MHz
106.25MHz
156.25MHz
212.5MHz
312.5MHz
622.08MHz
MIN.
TYP.
0.4
0.4
0.4
0.4
0.4
3
3
3
3
6
20
20
20
20
50
MAX.
0.5
0.5
0.5
0.5
0.5
5
5
5
5
8
30
30
30
30
70
UNITS
Integrated jitter RMS
Integrated 12 kHz to 20 MHz
ps
Period jitter RMS
With capacitive decoupling
between VDD and GND.
Over 10,000 cycles.
ps
Period jitter Peak-to-
Peak
With capacitive decoupling
between VDD and GND.
Over 10,000 cycles.
ps
5. Phase Noise Specifications
PARAMETERS
FREQ.
106.25MHz
Phase Noise
relative to carrier
(typical)
156.25MHz
212.5MHz
312.5MHz
622.08MHz
@10Hz
-66
-62
-62
-59
-49
@100Hz
-96
-92
-92
-85
-84
@1kHz
-122
-120
-118
-117
-111
@10kHz
-132
-132
-126
-128
-120
@100kHz
-126
-128
-120
-125
-118
@1M
-144
-140
-140
-139
-128
@10M
-150
-150
-150
-148
-138
dBc/Hz
UNITS
6. CMOS Electrical Characteristics
PARAMETERS
Output drive current
Output Clock Rise/Fall Time
Output Clock Rise/Fall Time
SYMBOL
I
OH
I
OL
CONDITIONS
V
OH
= V
DD
-0.4V, V
DD
=3.3V
V
OL
= 0.4V, V
DD
= 3.3V
0.3V ~ 3.0V with 15 pF load
20%-80% with 50Ω Load
MIN.
30
30
TYP.
MAX.
UNITS
mA
mA
0.7
0.3
ns
ns
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
Let me talk about the types of microcontrollers I have used, mainly 8-bit and 16-bit. Let's see which microcontrollers are used more. In school, I mainly used STC51 microcontrollers and MSP430 (TI) 16...
Please give me some advice. I found that stm32f4 can enter the read interrupt of DCMI. There is data in the data register of DCMI, but DMA cannot read the data! ! {:1_118:} void Camera_DMA_Init() { DM...
The IIS3DWB is a system-in-package featuring a 3-axis digital accelerometer with low noise over an ultra-wide and flat frequency range. The wide bandwidth, low noise, very stable and repeatable sensit...
Requirements: Wireless networking within a few kilometers, the amount of data to be transmitted is not large, just some environmental monitoring data. It can be a C/S architecture, all terminals repor...
With the popularity of cars nowadays, bicycles are slowly being phased out. However, there are always some places in our cities that cars cannot go to, such as narrow alleys, and motorcycles are also ...
[align=left][color=black][font=宋体][size=10.0pt]Hello experts, I am developing applications based on the Qingke[/size][/font][/color][color=black][font=Monospace][size=10.0pt]micokit-3165[/size][/font]...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
Introduction
Automakers are working to reduce vehicle weight to reduce CO2 emissions and improve fuel efficiency. Designers are therefore seeking new technologies and design techniques that can...[Details]
Today, with energy becoming increasingly scarce, the utilization of natural energy has become the focus of people's attention. Among various natural energies, the endless solar energy is highly fav...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
The invention of the steam engine ushered in the first conversion of internal energy and mechanical energy for mankind, and the birth of the internal combustion engine at the end of the 19th centur...[Details]
Based on the actual situation, a remote intelligent anti-theft alarm device for home use, connected to the telephone line, simple to operate, and stable and reliable in operation is designed. When ...[Details]
1 Introduction
Automatic Test
System The ATS (Automatic Test System) integrates all the stimulus and measurement equipment required for testing.
The computer
efficiently comp...[Details]
TPMS is the abbreviation of "Tire Pressure Monitoring System". It is mainly used to automatically monitor the tire pressure in real time when the car is driving, and to alarm for tire leakage and l...[Details]
High-definition video surveillance has developed rapidly in recent years, mainly to solve the problem of unclear "details" in normal monitoring. Some cities use high-definition television surveilla...[Details]
At present, products in the field of monitoring generally focus on the field level, that is, the client/server (C/S) model is adopted, the purpose of which is to ensure the stability and reliability o...[Details]
According to a survey by the International Energy Agency, Asia and Australia used 1.65 trillion liters of oil for energy in 2004. The survey also showed that since 1990, the demand for oil has been...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
