AD9854/PCB Analog Devices Inc, AD9854/PCB Datasheet - Page 18
![no-image](/images/manufacturer_photos/0/0/57/analog_devices_inc_sml.jpg)
AD9854/PCB
Manufacturer Part Number
AD9854/PCB
Description
BOARD EVAL FOR AD9854
Manufacturer
Analog Devices Inc
Datasheet
1.AD9854ASTZ.pdf
(52 pages)
Specifications of AD9854/PCB
Rohs Status
RoHS non-compliant
Module/board Type
Evaluation Board
For Use With/related Products
AD9854
- Current page: 18 of 52
- Download datasheet (2Mb)
AD9854
µPROCESSOR/
CONTROLLER
REFERENCE
FPGA, ETC.
CLOCK
2kΩ
8-BIT PARALLEL OR
SERIAL PROGRAMMING
DATA AND CONTROL
SIGNALS
300MHz MAX DIRECT
MODE OR 15MHz TO 75MHz
MAX IN THE 4× TO 20×
CLOCK
MULTIPLIER MODE
R
SET
AD9854
REFERENCE
CLOCK
Figure 34. Frequency Agile Clock Generator Applications for the AD9854
AD9854
Q DAC OR
CONTROL
I DAC
A
DAC
OUT
CMOS LOGIC CLOCK OUT
= 100MHz
Figure 33. Clock Frequency Doubler
+
LPF
LPF
Rev. E | Page 18 of 52
COS
SIN
1
2
COMPARATORS
LOW-PASS
LOW-PASS
FILTER
FILTER
NOTES
1. I
2. SWITCH POSITION 1 PROVIDES COMPLEMENTARY
3. SWITCH POSITION 2 PROVIDES THE SAME DUTY CYCLE
SINUSOIDAL SIGNALS TO THE COMPARATOR
TO PRODUCE A FIXED 50% DUTY CYCLE FROM THE
COMPARATOR.
USING QUADRATURE SINUSOIDAL SIGNALS TO THE
COMPARATOR OR A DC THRESHOLD VOLTAGE TO
ALLOW SETTING OF THE COMPARATOR DUTY CYCLE
(DEPENDS ON THE CONFIGURATION OF THE Q DAC).
OUT
CLOCK OUT = 200MHz
= APPROX 20mA MAX WHEN R
SET
= 2kΩ.
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