OUTPUT

VOLTAGE

DIGITAL INPUT CODE

0

0

4095

ZE

FSE

GE = FSE - ZE

FSE = GE + ZE

4096

DAC121S101

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SNAS265H – JUNE 2005 – REVISED FEBRUARY 2010

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

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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