Datasheet

OUTPUT
VOLTAGE
DIGITAL INPUT CODE
0
0 4095
ZE
FSE
GE = FSE - ZE
FSE = GE + ZE
4095 x V
A
4096
DAC121S101
www.ti.com SNAS265I –JUNE 2005–REVISED MARCH 2013
MONOTONICITY is the condition of being monotonic, where the DAC has an output that never decreases when
the input 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 V
A
.
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 to 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 000h has been
entered.
Transfer Characteristic
Figure 1. Input / Output Transfer Characteristic
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