ASAHI KASEI EMD CORPORATION
AKD0598-E-00 Jan-08
1
Evaluation Board for AK8130
AKD8130
Description
The AKD8130 is an evaluation board for AK8130
clock generator family. Therefore, it is easy to
evaluate the jitters and VCXO performance.
4 types of boards are prepared depending on
crystal foot pattern.
Ordering guide
n AKD813X_C
X: Device type
0:AK8130
0A:AK8130A
0B:AK8130B
C: Crystal type
N: Non Crystal
A: 49 Surface mount type
B: 5032 2 terminal
C: 3025 2 terminal
D: 3225 4 terminal
Block Diagram
AK8130 Evaluation Board
AK8130
VDD
VSS
AK811x
CLK1
CLK2
CLK3
CLK4
REFOUT
VIN
AKD8130
Jan-08 AKD0598-E-00
2
brand name
of AKEMD’s IC’s
Functions
Figure 1. AKD8130 top view
1. Power Supply
Please connect the lead line to VDDPAD (3V) and VSSPAD (GND).
2. DIPSW Setting
DISPSW6-10 are connected to the mode setting pins of AK8130 and AK811x.
If these pins are controlled with general-purpose port, microprocessor or other methods, please keep these
pins “open”.
Table1.1
SW Connect to:
SW6 AK8130 Pin2
SW7 AK8130 Pin3
SW8 AK8130 Pin14
SW9 AK811x Pin5
SW10 AK811x Pin4
1.Power
2.DIPSW
3.PWM Filter
3. VIN Direct Input
4.Dummy Capacitors
5.Crystal Unit
6.AK811x
SWｎ SWｎ
SWｎ
VDD
（HIGH）
OPEN
GND
（
LO
）
AKD8130
Jan-08 AKD0598-E-00
3
The brand name
of AKEMD’s IC’s
3. Smoothing filter for PWM signal
There are patterns to configure a passive smoothing filter for PWM signal which is supplied to control the
oscillation frequency of VCXO. It is necessary to mount resistor and condenser on these patterns and also
input PWM signal between VIN and VSS12 pins when this filter is employed. It is also possible to control the
voltage without using this filter. In this case, please input DC voltage directly to CN2 pin over VSS8 pin.
4. Dummy capacitor loads
There are several dummy capacitor loads, C23 through C27. It is useful to measure clock performance or
current consumption by loading capacitor which is virtually assumed in the system. It is important to take line
capacitance into account and it is approximately 5pF. Consequently if there is 25pF capacitance assumed in
the system, another 20pF capacitor needs to be mounted. Each clock outputs from AK8130 lead to J8 through
J12. Chassis mount test jacks for miniature probe (Tektronix 131-0258-00) are available by mounting there.
Table1.2
Jn/Cn Connect to:
J8/C8 AK8130 Pin11
J9/C9 AK8130 Pin10
J10/C10 AK8130 Pin7
J11/C11 AK8130 Pin8
J12/C12 AK8130 Pin9
5. Quartz oscillator foot pattern
There are 4 types of boards depending on quartz oscillator. VCXO is controlled its oscillation frequency by
capacitance fluctuation of quartz oscillator. Therefore parasitic capacitance exists on the line pattern affects
the oscillation performance. However in this board, ground patterns under quartz oscillator and Pin1/Pin16 is
removed to minimize the unwanted affection. It is possible to check and tune characteristics of VCXO by using
this board because those characteristics are adjustable by changing load capacitor, C17 and C18, to the
suitable value. Please refer VCXO characteristic as a example.
6. AK811x foot pattern
It is possible to mount AK811x series 1ch-PLL on this board.
AKD8130
Jan-08 AKD0598-E-00
4
brand name
of AKEMD’s IC’s
Jitter measurement
Device:AK8130B
Condition: S2/S1/S0=HHH, Dummy capacitor=0pF
AKD8130
Jan-08 AKD0598-E-00
5
The brand name
of AKEMD’s IC’s
Pullable Range Profile tested
Device:AK8130
Parts Name AT-41CD2
Manufacture NDK
Parameter Unit
Motional inductance L1 mH
2
Motional capacitance C1 fF 17.3
Equivalent resｉstance R1 Ω 8.7
Shunt capacitance C0 pF 4.2
Load capacitance＠27M
CL pF 12
Cext1 C17
ｐF 18.0
Cext2 C18
pF 5.0
Parts Name NX5032GA
Manufacture NDK
Parameter Unit
Motional inductance L1 mH
5.71
Motional capacitance C1 fF 6.09
Equivalent resｉstance R1 Ω 10
Shunt capacitance C0 pF 1.5
Load capacitance @27M
CL pF 8.0
Cext1 C17
ｐF 12.0
Cext2 C18
pF 1.0
Parts Name SMD49
Manufacture KDS
Parameter Unit
Motional inductance L1 mH
4.4
Motional capacitance C1 fF 7.9
Equivalent resｉstance R1 Ω 6.0
Shunt capacitance C0 pF 1.8
Load capacitance@ 27M
CL pF 8.7
Cext1 C17
ｐF 15.0
Cext2 C18
pF 1.0
Parts Name SMD49
Manufacture KDS
Parameter Unit
Motional inductance L1 mH
4.4
Motional capacitance C1 fF 7.9
Equivalent resｉstance R1 Ω 6.0
Shunt capacitance C0 pF 1.8
Load capacitance@ 27M
CL pF 10.0
Cext1 C17
ｐF 10.0
Cext2 C18
pF 5.0
27.0MHz VCXO Characteristics NDK AT-41CD2（CL=12.0pF）
（Cext1=18.0pF,Cext2=5.0pF)
-150
-100
-50
0
50
100
150
0 0.5 1 1.5 2 2.5 3 3.5
VIN(V)
Δf(ppm)
27.0MHz VCXO Characteristics NDK NX5032GA
（
CL=8.0pF
）
(Cext1=12.0pF,
Cext2=1.0pF)
-150.0
-100.0
-50.0
0.0
50.0
100.0
150.0
00.5 1 1.5 2 2.5 3 3.5
VIN(V)
Δ
ｆ
(ppm)
27.0MHz VCXO Characteristics KDS SMD49 （CL=8.7pF）
(Cext1=15.0pF, Cext2=1.0pF)
-200.0
-150.0
-100.0
-50.0
0.0
50.0
100.0
150.0
200.0
00.5 1 1.5 2 2.5 3 3.5
VIN(V)
Δ
ｆ
(ppm)
SMD49
（
CL:10.0pF
）
Cext1=10.0pF,
Cext2=5.0pF
-150.0
-100.0
-50.0
0.0
50.0
100.0
150.0
00.5 1 1.5 2 2.5 3 3.5
VIN(V)
Δ
ｆ
(ppm)
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Clock out 11x
VDD3 VDD3 VDD2
VDD1
VDD2
VDD3
VDD2 VDD3VDD1
VDD11 VDD11
VDD11
VDD11 Title
Size Document Number Rev
Date: Sheet of
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AK813X Evaluation Board
A
1 1Wednesday, November 28, 2007
Title
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Date: Sheet of
<Doc> O
AK813X Evaluation Board
A
1 1Wednesday, November 28, 2007
Title
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Date: Sheet of
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AK813X Evaluation Board
A
1 1Wednesday, November 28, 2007
AK813x Series, Evaluation Board.
Tantalum Capacitor
J14
VSSPad
J14
VSSPad
1
TPS7
TP
TPS7
TP
1
+C21
22uF
+C21
22uF
VDD_12VDD_12
1
VSS11VSS11
1
C18
cap
C18
cap
JP6JP6
12
U4
AK811x
U4
AK811x
OE 4
CLKIN 6
FSEL 5
CLKOUT
3VSS
2VDD
1
VSS13VSS13
1
+C19
22uF
+C19
22uF
VSS8VSS8
1
SW10
S1
SW10
S1
2
1
3
VDD_6VDD_6
1
+C16
22uF 10V
+C16
22uF 10V
C14
C_filter
C14
C_filter
SW8
S2
SW8
S2
2
1
3
VSS14VSS14
1
TPS8
TP
TPS8
TP
1
TP8
VIN
TP8
VIN
1
+C20
22uF
+C20
22uF
C17
cap
C17
cap
C27
NP
C27
NP
VSS10VSS10
1
VSS9VSS9
1
TPS9
TP
TPS9
TP
1
R2
R_filter
R2
R_filter
SW6
S0
SW6
S0
2
1
3
C26
NP
C26
NP
U3
AK813x
U3
AK813x
VDD3 15
S2 14
VDD2 13
GND2 12
CLK4 11
CLK3 10
CLK2
8CLK1
7GND1
6
S1
3
VDD1
5
S0
2
VIN
4
REFOUT 9
X2 16
X1
1
Y2
CRYSTAL/SM
Y2
CRYSTAL/SM
TP15 CLK INPUTTP15 CLK INPUT
1
TPS5
TP
TPS5
TP
1
C25
NP
C25
NP
J9
con1
J9
con1
1
2
JP7JP7
12
C24
NP
C24
NP
JP5JP5
12
C15
0.1u
C15
0.1u
C23
NP
C23
NP
J12
con1
J12
con1
1
2
VDD_4VDD_4
1
C13
0.1u
C13
0.1u
J13
VDDPad
J13
VDDPad
1
J8
con1
J8
con1
1
2
TPS6
TP
TPS6
TP
1
J11
con1
J11
con1
1
2
SW9
S0
SW9
S0
2
1
3
VSS12VSS12
1
JP8JP8
12
C22
0.1u
C22
0.1u
VDD_5VDD_5
1
TP_VIN1
TP
TP_VIN1
TP
1
J10
con1
J10
con1
1
2
SW7
S1
SW7
S1
2
1
3
C12
0.1u
C12
0.1u