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ASAHI KASEI EMD CORPORATION
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
VSS
VDD
CLK1
CLK2
VIN
AK8130
CLK3
CLK4
REFOUT
AK811x
AK8130 Evaluation Board
AKD0598-E-00 1
Jan-08
AKD8130
The brand name of AKEMD's IC's
Functions
3.PWM Filter
3. VIN Direct Input
5.Crystal Unit
1.Power
2.DIPSW
6.AK811x
4.Dummy Capacitors
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".
SW
SW
SW
VDD HIGH
Table1.1 SW SW6 SW7 SW8 SW9 SW10
OPEN
GND LO
Connect to: AK8130 Pin2 AK8130 Pin3 AK8130 Pin14 AK811x Pin5 AK811x Pin4
Jan-08 2
AKD0598-E-00
AKD8130
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 J8/C8 J9/C9 J10/C10 J11/C11 J12/C12
Connect to: AK8130 Pin11 AK8130 Pin10 AK8130 Pin7 AK8130 Pin8 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.
Jan-08 3
AKD0598-E-00
AKD8130
The brand name of AKEMD's IC's
Jitter measurement
Device:AK8130B Condition: S2/S1/S0=HHH, Dummy capacitor=0pF
Jan-08 4
AKD0598-E-00
AKD8130
The brand name of AKEMD's IC's
Pullable Range Profile tested
Device:AK8130 Parts Name Manufacture Parameter Motional inductance Motional capacitance Equivalent resstance Shunt capacitance Load capacitance27M Cext1 Cext2 AT-41CD2 NDK Unit mH 2 fF 17.3 8.7 pF 4.2 pF 12 F pF 18.0 5.0
27.0MHz VCXO Characteristics NDK AT-41CD2CL=12.0pF Cext1=18.0pF,Cext2=5.0pF) 150 100 f(ppm) 50 0 -50 -100 -150 VIN(V) 0 0.5 1 1.5 2 2.5 3 3.5
L1 C1 R1 C0 CL C17 C18
27.0MHz VCXO Characteristics NDK NX5032GA CL=8.0pF (Cext1=12.0pF, Cext2=1.0pF) 150.0 100.0 50.0 (ppm) 0.0 0 -50.0 -100.0 -150.0 VIN(V) 0.5 1 1.5 2 2.5 3 3.5
Parts Name Manufacture Parameter Motional inductance Motional capacitance Equivalent resstance Shunt capacitance Load capacitance @27M Cext1 Cext2
L1 C1 R1 C0 CL C17 C18
NX5032GA NDK Unit mH 5.71 fF 6.09 10 pF 1.5 pF 8.0 F pF 12.0 1.0
27.0MHz VCXO Characteristics KDS SMD49 CL=8.7pF (Cext1=15.0pF, Cext2=1.0pF) 200.0 150.0 100.0 (ppm) 50.0 0.0 -50.0 -100.0 -150.0 -200.0 VIN(V) 0 0.5 1 1.5 2 2.5 3 3.5
Parts Name Manufacture Parameter Motional inductance Motional capacitance Equivalent resstance Shunt capacitance Load capacitance@ 27M Cext1 Cext2
L1 C1 R1 C0 CL C17 C18
SMD49 KDS Unit mH 4.4 fF 7.9 6.0 pF 1.8 pF 8.7 F pF 15.0 1.0
SMD49 CL:10.0pF Cext1=10.0pF, Cext2=5.0pF 150.0 100.0 50.0 (ppm) 0.0 0 -50.0 -100.0 -150.0 VIN(V) 0.5 1 1.5 2 2.5 3 3.5
Parts Name Manufacture Parameter Motional inductance Motional capacitance Equivalent resstance Shunt capacitance Load capacitance@ 27M Cext1 Cext2
L1 C1 R1 C0 CL C17 C18
SMD49 KDS Unit mH 4.4 fF 7.9 6.0 pF 1.8 pF 10.0 F pF 10.0 5.0
Jan-08 5
AKD0598-E-00
5
4
3
2
1
AK813x Series, Evaluation Board.
VSS11 VSS12 VSS13 VSS14 1 1 1 1 TPS7 VDD3 1 3 1 SW6 S0 2 TP VDD3 1 3 1 SW7 S1 2 TP TPS6 VDD2 3 1 SW8 S2 2 TP 1 TPS5
TPS9 VDD11 1 3 1 SW9 S0 2 TP VDD11 3 1 SW10 S1 2
TPS8 1 TP
D
D
VDD3 VDD11 U4 C15 0.1u C17 cap Y2 C18 cap VDD2 CRYSTAL/SM U3 1 2 3 4 5 6 7 8 X1 S0 S1 VIN VDD1 GND1 CLK1 CLK2 AK813x X2 VDD3 S2 VDD2 GND2 CLK4 CLK3 REFOUT 16 15 14 13 12 11 10 9 VSS9 C13 0.1u 1 TP15 CLK INPUT
C
1 2 3 C22 0.1u
VDD CLKIN VSS FSEL CLKOUT OE AK811x
6 5 4
TP8 R2 1 R_filter
C
TP_VIN1 1
Clock out 11x
TP VDD1 C14 C_filter VSS8 1 C12 0.1u
VIN
1
J13 JP8 1
B
2
1
B
VDDPad 2 J14 1 2 VSSPad
JP6 1 C23 1 NP J10 C24 2 NP J11 C25 2 NP J12 C26 1 2 NP NP 2 con1 J9 C27 1 con1 2 J8
JP7
1 con1
1 con1
1 con1
JP5 2 1
VSS10 1
A
VDD_4 1
VDD_5 1
VDD_6 1
VDD_12 1
A
+ VDD1
C20 22uF VDD2
+
C19 22uF VDD3
+
C21 22uF VDD11
+ C16 22uF 10V
Title AK813X Evaluation Board Size A Document Number Wednesday, November 28, 2007
2
Rev O Sheet 1
1
Tantalum Capacitor Date:
5 4 3
of
1

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