MCP4725 datasheet(13/42 Pages) MICROCHIP

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DS22039C-page 13

MCP4725

4.9

Offset Error Drift

Offset error drift is the variation in offset error due to a

change in ambient temperature. The offset error drift is

typically expressed in ppm/oC.

4.10

Settling Time

The Settling time is the time delay required for the DAC

output to settle to its new output value from the start of

code transition, within specified accuracy. In the

MCP4725, the settling time is a measure of the time

delay until the DAC output reaches its final value

(within 0.5 LSB) when the DAC code changes from

400h to C00h.

4.11

Major-Code Transition Glitch

Major-code transition glitch is the impulse energy

injected into the DAC analog output when the code in

the DAC register changes state. It is normally specified

as the area of the glitch in nV-Sec. and is measured

when the digital code is changed by 1 LSB at the major

carry transition (Example: 011...111 to 100... 000, or

100... 000 to 011 ... 111).

4.12

Digital Feedthrough

Digital feedthrough is the glitch that appears at the

analog output caused by coupling from the digital input

pins of the device. It is specified in nV-Sec. and is

measured with a full scale change on the digital input

pins (Example: 000... 000 to 111... 111, or 111... 111 to

000... 000). The digital feedthrough is measured when

the DAC is not being written to the register.

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