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AD10226 Datasheet(PDF) 13 Page - Analog Devices

Part No. AD10226
Description  Dual-Channel, 12-Bit 125 MSPS
Download  20 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD10226 Datasheet(HTML) 13 Page - Analog Devices

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REV. 0
AD10226
–13–
These characteristics result in both a reduction of electromagnetic
interference (EMI) and an overall improvement in performance.
It is important to design a layout that prevents noise from coupling
to the input signal. Digital signals should not be run in parallel
with input signal traces and should be routed away from the input
circuitry. The PCB should have a ground plane covering all unused
portions of the component side of the board to provide a low
impedance path and manage the power and ground currents. The
ground plane should be removed from the area near the input
pins to reduce stray capacitance.
Solder Reflow Profile
The Solder Reflow Profile for the AD10226 is shown in Figure 6.
TIME – Seconds
0
50
100
250
200
150
050
100
150
200
250
300
350
400
Figure 6. Typical Solder Reflow Profile
LAYOUT INFORMATION
The schematic of the evaluation board (Figures 7a–7d) represents
a typical implementation of the AD10226. The pinout of the
AD10226 is very straightforward and facilitates ease of use and the
implementation of high-frequency/high resolution design prac-
tices. It is recommended that high quality ceramic chip capacitors
be used to decouple each supply pin to ground directly at the device.
All capacitors can be standard high quality ceramic chip capacitors.
Care should be taken when placing the digital output runs. Because
the digital outputs have such a high slew rate, the capacitive load-
ing on the digital outputs should be minimized. Circuit traces for
the digital outputs should be kept short and connect directly to
the receiving gate. Internal circuitry buffers the outputs of the
AD9433 ADC through a resistor network to eliminate the need
to externally isolate the device from the receiving gate.
EVALUATION BOARD
The AD10226 evaluation board (Figures 7a–7d) is designed to
provide optimal performance for evaluation of the AD10226
analog-to-digital converter. The board encompasses everything
needed to ensure the highest level of performance for evaluating the
AD10226. The board requires an analog input signal, an ENCODE
clock and power supply inputs. The clock is buffered on-board to
provide clocks for the latches. The digital outputs and out clocks
are available at the standard 40-pin connectors J1 and J2. Power
to the analog supply pins is connected via banana jacks. The analog
supply powers the associated components and analog section of the
AD10226. The digital outputs of the AD10226 are also powered
via banana jacks with 3.3 V. Contact the factory if additional layout
or application assistance is required.
BILL OF MATERIALS LIST FOR AD10226 EVALUATION BOARD
Quantity
Reference Designator
Value
Description
Part Number
2
U16, U17
IC, Low Voltage 16-Bit D-Type Flip-Flop
74LCX16374MTD
with 5 V Tolerant Inputs and Outputs
(Fairchild)
1U1
IC, BGA 35
35 385
AD10226AB
2
U14, U15
IC, Precision Low Dropout any CAP
ADP3330ART-3.3-RL7
Voltage Regulator
(Analog)
4
R38, R39, R56, R58
33 k
RES 33 k
Ω 1/10W 0.1% 0805 SMD
ERA-6YEB333V (Panasonic)
8
R1, R7, R8, R41, R60, R61, R71, R72
51
RES 51
Ω 1/10W 5% 0805 SMD
ERJ-6GEYJ510V (Panasonic)
32
R3, R4, R9–R18, R23–R30, R35,
100
RES 100
Ω 1/10W 1% 0805 SMD
ERJ-6ENF1000V
R36, R40, R42–R46, R63–R66
(Panasonic)
23
C1, C2, C5–C10, C12, C16–C18,
0.1
µF
CAP 0.1
µF 50 V Ceramic Y5V 0805
ECJ-2VF1H104Z
C20–C26, C28, C33–C35
(Panasonic)
2
C13, C27
0.47
µF CAP 0.47 µF 25 V Ceramic Y5V 0805
ECJ-2YF1E474Z (Panasonic)
2
J1, J2
2
20 Male Connector Strip, 100 Centers
TSW-120-08G-D (Samtec)
4
L1, L2, L3, L4
47
SMT Ferrite Bead
2743019447 (Fair Rite)
4
U2, U3, U9, U11
IC, 3.3 V/5 V ECL Differential
MC10EP16D
Receiver/Driver
(Motorola)
8
E3–E6, E25, E26, E33, E34
Power Jack, Banana Plug
108-0740-001 (Johnson Company)
2
U4, U10
3.3 V Dual Differential
SY100ELT23L
LVPECL-to-LVTTL Translator
(Micrel-Synergy)
10
C3, C4, C11, C14, C15, C19,
10
µF
Solid Tantalum Chip Capacitor,
T491C106M016AS
C29, C30–C32
10
µF, 16 V, 20%
(KEMET)
8
J3–J7, J10–J12
SMA PLUG 200Mil STR GOLD
142-0801-201
(Johnson Components Inc.)
4
Spacer Aluminum, Hex M–F (Standoff)
4
Nut Hex Stl #4-40 UNC-2B
1
AD10201/AD10226 Evaluation Board
GS03983 Rev. A (PCB)
2
C36, C37
CAP 0.047
µF 25 V Ceramic Y5V 0603
ECJ-1VB1C473K
6
JP3, JP4, JP6, JP8, JP9, JP12
0
RES 0
Ω 1/16 W 5% 0402
ER J-2GEOR00


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