7

FN8216.0

March 10, 2005

Notes: 1.

“LSB” is defined as V(VRef)/255, “Full Scale” is defined as V(VRef).

2.

above zero. Offset error is the

amount of deviation between the measured first transition point and the ideal point.

. Full Scale Error is the

amount of deviation between the measured last transition point and the ideal point,

after subtracting the Offset from the measured curve.

expressed in LSBs. The measured transfer curve is adjusted for Offset and Fullscale errors before calculating DNL.

defined as the sum of the DNL errors starting from code 00h to the code where the INL measurement is desired. The measured trans-

fer curve is adjusted for Offset and Fullscale errors before calculating INL.

3.

These parameters are periodically sampled and not 100% tested.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions / Notes

ADCTIME

A/D converter conversion

time

9

ms

Proportional to A/D converter

input voltage. This value is

maximum at full scale input

of A/D converter.

ADCfiltOff = “1”

VSense pin input

resistance

100

k

Ω

VSense as an input,

ADCIN bit = “1”

VSense pin input

capacitance

1

7

pF

VSense as an input,

ADCIN bit = “1”,

Frequency = 1 MHz

See note 3.

VSense input signal range

0

V(VRef)

V

This is the A/D Converter

Dynamic Range. ADCIN bit = “1”

The ADC is monotonic

A/D converter offset error

±1

LSB

See notes 1 and 2

A/D converter full scale

error

±1

LSB

A/D Converter Differential

Nonlinearity

±0.5

LSB

A/D converter Integral

Nonlinearity

±1

LSB

Temperature step causing

one step increment of ADC

output

0.52

0.55

0.58

°C

See note 3

ADC output at 25°C

0.5 x V(VRef)

255

[]

254.5 x V(VRef)

255

[]

X96012