Low Power MEMS Jitter Attenuator
ABMJB-902
ESD Sensitive
Pb
RoHS/RoHS II Compliant
FEATURES:
• Low power and miniature package programmable jitter attenuator
• Input/output frequency up to 200MHz
• I/O pins can be configured as output enable (OE), frequency switching (CSEL),
power down (PDB) input, or CLK1 (2) output.
• <10μA current consumption with PDB active
• Operating temperature range from -40˚C to +85˚C
• 6-pin SOT23 RoHS-compliant packages
• Related devices:
- ABMJB-903: Single-ended input, differential output, and phase noise cleaning
Moisture Sensitivity Level: MSL=1
2.9 x 2.8 x 1.45 mm SOT23-6L
APPLICATIONS:
• IEEE1588 GPIO clock cleanup
• FPGA-generated clock cleanup
• 1/10/40/100 Gigabit Ethernet (GbE)
• SONET/SDH
• PCI-Express
• CPRI/OBSAI wireless base stations
• Fibre Channel
• SAS/SATA
• DIMM
STANDARD SPECIFICATIONS:
Absolute Maximum Ratings
(1)
Parameters
Supply Voltage (V
DD
)
Input Voltage (V
IN
)
Lead Temperature
Case Temperature
Storage Temperature (T
S
)
-65
-0.5
Min.
Typ.
Max.
+4.6
V
DD
+0.5
+ 260
+ 115
+150
Units
V
V
ºC
ºC
ºC
Soldering, 20s
Notes
Operation Ratings
(2)
Parameters
Supply Voltage (V
DD
)
Junction Thermal Resistance (
Ambient Temperature (T
A
)
JA
)
Min.
+2.25
-40
Typ.
Max.
+3.63
195
+85
Units
V
ºC/W
ºC
Notes
SOT23, Still-Air
V
DD
= 3.3V±10% or 2.5V±10%; CL = 15pF; T
A
= 25°C
DC Electrical Characteristics
Parameters
Min.
Typ.
12
Max.
18
<10
+3.63
100
Units
mA
µA
V
ms
mA
mA
mA
When PDB = 0
Notes
V
DD
= 3.3V, 30MHz, Load = 15pF
Supply Current, dynamic (I
DD
)
Operating Voltage (V
DD
)
Power Supply Ramp (t
PU
)
Output Current, low drive (I
OLD
)
Output Current, standard drive (I
OSD
)
Output Current, high drive (I
OHD
)
Notes:
1.
2.
+2.25
0.001
4
8
16
Time for V
DD
to reach 90%
V
DD
. Power
ramp must be monotonic.
3.3V
V
OL
= 0.4V,
V
OH
=
V
DD
- 0.9V,
V
DD
=
Exceeding the absolute maximum ratings may damage the device.
The device is not guaranteed to function outside tis operating ratings.
ABRACON IS
ISO9001:2008
CE RTIFIED
CE RTIFIED
LLC
2 Faraday, Suite# B
|
Irvine
|
CA 92618
Revised: 03.09.15
Ph. 949.546.8000
|
Fax. 949.546.8001
Visit
www.abracon.com
for Terms and Conditions of Sale
Low Power MEMS Jitter Attenuator
ABMJB-902
AC Electrical Characteristics
Parameters
Input (REFIN)
Frequency
3.3V Operation
2.5V Operation
ESD Sensitive
Pb
RoHS/RoHS II Compliant
2.9 x 2.8 x 1.45 mm SOT23-6L
V
DD
= 3.3V±10% or 2.5V±10%; CL = 15pF; T
A
= 25°C
Min.
1
1
0.8
Typ.
Max.
200
167
V
DD
V
DD
Units
MHz
Notes
Input Signal Amplitude
0.1
5
5
1.25
1.25
V
PP
Output Frequency
200
167
200
167
1
10
1
Internally AC-coupled (high frequency)
Internally AC-coupled (low frequency)
For 3.3V operation, F
REFIN
≤50MHz
For 2.5V operation, F
REFIN
≤40MHz
CLK0 and CLK1, 3.3V operation
CLK0 and CLK1, 2.5V operation
CLK2, 3.3V operation
CLK2, 2.5V operation
At power up (after V
DD
increases over
2.25V)
OE function: T
A
= 25°C, 15pF load. Add
one clock period to this measurement for
a usable clock output
PDB function: T
A
= 25°C, 15pF load
15pF load, 10/90% V
DD
, high drive, 3.3V
15pF load, 10/90% V
DD
, high drive, 3.3V
@2.5V and 3.3V over entire frequency
range. Threshold = V
DD
/2
10,000 samples measured
CLK0 = REFIN
MHz
Settling Time
Output Enable Time
Output Rise Time
Output Fall Time
Duty Cycle
Period Jitter (peak-to-peak)
(3)
Jitter Attenuation Bandwidth
Notes:
ms
ns
ms
ns
ns
%
ps
kHz
1.2
1.2
45
50
75
4
1.7
1.7
55
3. Jitter performance can be considered the noise floor of the device. Jitter cannot be attenuated below this value.
OPTIONS AND PART IDENTIFICATION:
Please refer to the
ABMJB-902 Part Number and Configuration Guide
for available part
numbers and configurations.
ABRACON IS
ISO9001:2008
CE RTIFIED
CE RTIFIED
LLC
2 Faraday, Suite# B
|
Irvine
|
CA 92618
Revised: 03.09.15
Ph. 949.546.8000
|
Fax. 949.546.8001
Visit
www.abracon.com
for Terms and Conditions of Sale
Low Power MEMS Jitter Attenuator
ABMJB-902
OUTLINE DIMENSION:
ESD Sensitive
Pb
RoHS/RoHS II Compliant
2.9 x 2.8 x 1.45 mm SOT23-6L
Pin No.
1
2
3
4
5
6
Configuration
PDB, OE, CLK1
GND
REFIN
VDD
CSEL, CLK2
CLK0
Notes:
1.
2.
3.
4.
5
Dimensions and tolerances are as per ANSI Y14.5M, 1982
Package surface to be mirror finish.
Die is facing up for mold. Die is facing down for trim/form. i.e.
reverse trim/form.
The foot length measuring is based on the gauge plane method.
Dimensions are exclusive of mold flash & gate burr.
Dimension: mm
ABRACON IS
ISO9001:2008
CE RTIFIED
CE RTIFIED
LLC
2 Faraday, Suite# B
|
Irvine
|
CA 92618
Revised: 03.09.15
Ph. 949.546.8000
|
Fax. 949.546.8001
Visit
www.abracon.com
for Terms and Conditions of Sale
Low Power MEMS Jitter Attenuator
ABMJB-902
PIN DESCRIPTION:
ESD Sensitive
Pb
RoHS/RoHS II Compliant
2.9 x 2.8 x 1.45 mm SOT23-6L
SOT23-6L package
Pin No.
1
2
3
4
5
6
Pin Name
PDB, OE, CLK1
GND
REF_IN
VDD
CSEL, CLK2
CLK0
Pin Type
I/O
GND
I, (SE)
PWR
I/O
O
LVCMOS
LVCMOS
LVCMOS
Pin Level
LVCMOS
Function
Customizable pin: power down or output enable control
input with pull-up or clock output
Power supply ground
Reference clock input
Power supply
Customizable pin: configuration select control input with
pull-up or clock output
Clock output
BLOCK DIAGRAM:
ABRACON IS
ISO9001:2008
CE RTIFIED
CE RTIFIED
LLC
2 Faraday, Suite# B
|
Irvine
|
CA 92618
Revised: 03.09.15
Ph. 949.546.8000
|
Fax. 949.546.8001
Visit
www.abracon.com
for Terms and Conditions of Sale
Low Power MEMS Jitter Attenuator
ABMJB-902
FUNCTIONAL DESCRIPTION
The ABMJB-902 series is a highly featured, very flexible, advanced programmable jitter filter design for high
performance, low-power, small form-factor applications. The ABMJB-902 accepts a reference clock input between
1MHz and 200MHz and is capable of producing up to three outputs in the 5MHz to 200MHz range. The most common
configuration will be comprised of the same input and output frequency, but this flexible design also allows frequency
translation from one frequency to another frequency as long as both frequencies are within the specified ranges for input
and output.
ESD Sensitive
Pb
RoHS/RoHS II Compliant
2.9 x 2.8 x 1.45 mm SOT23-6L
Jitter Filter Programming
Typically, the jitter filter settings will be optimized for one particular input and output frequency, but the flexible design
also allows configurations for a certain frequency range, up to one octave wide.
The typical bandwidth of the jitter filter is 4kHz. This means that jitter frequency components above 4kHz will be
attenuated. In case of frequency translation, the bandwidth may be slightly different.
Clock Output (CLK0)
CLK0 is the main clock output. The output drive level can be programmed to low drive (4mA), standard drive (8mA) or
high drive (16mA). The maximum output frequency is 200MHz at 3.3V operation and 167MHz at 2.5V operation.
The CLK1 and CLK2 feature allows the PL902xxx to have two additional clock outputs programmed to one of the
following frequencies:
•
•
CLK1 = CLK0
CLK2 = CLK0, CLK0/2 or CLK0/4
Clock Output (CLK1, CLK2)
CLK1 and CLK2 allow the same output drive level programming as CLK0. Because of the extra /2 and /4 settings,
CLK2 is capable of going down to 1.25MHz. In case only an output clock of <5MHz is needed, CLK0 and CLK1 can be
disabled.
Output Enable (OE)
The output enable feature allows the user to enable and disable the clock output(s) by toggling the OE pin. The OE pin
incorporates a 60kΩ pull-up resistor, giving a default condition of logic “1”.
The power down (PDB) feature allows the user to put the ABMJB-902 into sleep mode. When activated (logic “0”),
PDB disables the synthesizer circuitry, counters, and all other active circuitry. In power down mode, the IC consumes
<10µA of power. The PDB pin incorporates a 60kΩ pull-up resistor giving a default condition of logic “1”.
The configuration select (CSEL) feature allows the PL902xxx to switch between two pre-programmed configurations
allowing the device on-the-fly frequency switching. The CSEL pin incorporates a 60kΩ pull-up resistor giving a default
condition of logic “1”.
Examples for this feature are:
•
•
Select between two frequencies or two frequency ranges.
Select between two frequency translations, like 1:1 and 1:2.
Power Down Control (PDB)
Configuration Select (CSEL)
ABRACON IS
ISO9001:2008
CE RTIFIED
CE RTIFIED
LLC
2 Faraday, Suite# B
|
Irvine
|
CA 92618
Revised: 03.09.15
Ph. 949.546.8000
|
Fax. 949.546.8001
Visit
www.abracon.com
for Terms and Conditions of Sale
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