DAC081S101
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SNAS323C –JUNE 2005–REVISED FEBRUARY 2013
MONOTONICITY is the condition of being monotonic, where the DAC has an output that never decreases when
the output code increases.
MOST SIGNIFICANT BIT (MSB) is the bit that has the largest value or weight of all bits in a word. Its value is
1/2 of VA.
POWER EFFICIENCY is the ratio of the output current to the total supply current. The output current comes from
the power supply. The difference between the supply and output currents, is the power consumed by the device
without a load.
SETTLING TIME is the time for the output to settle within 1/2 LSB of the final value after the input code is
updated.
WAKE-UP TIME is the time for the output to settle to within 1/2 LSB of the final value after the device is
commanded to the active mode from any of the power down modes.
ZERO CODE ERROR is the output error, or voltage, present at the DAC output after a code of 00h has been
entered.
Transfer Characteristic
FSE
255 x V
256
A
GE = FSE - ZE
FSE = GE + ZE
OUTPUT
VOLTAGE
ZE
0
0
255
DIGITAL INPUT CODE
Figure 1. Input / Output Transfer Characteristic
Timing Diagram
1
f
CLK
SCLK
1
2
13
14
15
16
t
L
t
SUCL
t
SYNC
t
H
t
CS
SYNC
t
DHD
D
IN
DB15
DB0
t
SUD
Figure 2. DAC081S101 Timing
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