AD9832BRU Analog Devices Inc, AD9832BRU Datasheet - Page 12

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AD9832BRU

Manufacturer Part Number
AD9832BRU
Description
D/A Converter (D-A) IC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD9832BRU

No. Of Pins
16
Peak Reflow Compatible (260 C)
No
No. Of Bits
10 Bit
Leaded Process Compatible
No
Mounting Type
Surface Mount
Interface Type
Serial
Package / Case
16-TSSOP
Rohs Status
RoHS non-compliant
Resolution (bits)
10 b
Master Fclk
25MHz
Tuning Word Width (bits)
32 b
Voltage - Supply
2.97 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With
EVAL-AD9832EBZ - BOARD EVAL FOR AD9832
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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AD9832
THEORY OF OPERATION
Sine waves are typically thought of in terms of their magnitude
form a(t) = sin (ωt). However, these are nonlinear and not easy
to generate except through piecewise construction. On the
other hand, the angular information is linear in nature. That is,
the phase angle rotates through a fixed angle for each unit of
time. The angular rate depends on the frequency of the signal
by the traditional rate of ω = 2 πf.
+1
–1
2
0
0
Figure 23. Sine Wave
MAGNITUDE
PHASE
Rev. B | Page 12 of 24
Knowing that the phase of a sine wave is linear and given a
reference interval (clock period), the phase rotation for that
period can be determined by
Solving for ω,
Solving for f and substituting the reference clock frequency for
the reference period (1/f
The AD9832 builds the output based on this simple equation. A
simple DDS chip can implement this equation with three major
subcircuits.
ΔPhase = ωδt
ω = ΔPhase/δt = 2 πf
f = ΔPhase × f
MCLK
/2 π
MCLK
= δt),

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