TMP86FS28DFG datasheet(265/272 Pages) TOSHIBA

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Page 253

TMP86FS28DFG

20.4 AD Conversion Characteristics

Note 1: The total error includes all errors except a quantization error, and is defined as a maximum deviation from the ideal con-

version line.

Note 2: Conversion time is different in recommended value by power supply voltage.

About conversion time, please refer to “Register Configuration”.

Note 3: Please use input voltage to AIN input Pin in limit of VAREF to VSS. When voltage of range outside is input, conversion value

becomes unsettled and gives affect to other channel conversion value.

Note 4: Analog reference voltage range:

∆VAREF = VAREF − VSS

Note 5: When AD is used with VDD < 2.7 V, the guaranteed temperature range varies with the operating voltage.

Note 6: The AVDD pin should be fixed on the VDD level even though AD converter is not used.

(VSS = 0.0 V, 4.5 V ≤ VDD ≤ 5.5 V, Topr = −40 to 85°C)

Parameter

Symbol

Condition

Min

Typ.

Max

Unit

Analog reference voltage

VAREF

AVDD − 1.0

–

AVDD

Power supply voltage of analog control

circuit (Note6)

AVDD

VDD

AVSS

VSS

Analog reference voltage range (Note4)

∆VAREF

3.5

–

Analog input voltage

VAIN

AVSS

–

VAREF

Power supply current of analog

reference voltage

IREF

VDD = AVDD = VAREF = 5.5 V

VSS = AVSS = 0.0 V

–0.6

1.0

Non linearity error

VDD = AVDD = 5.0 V

VSS = AVSS = 0.0 V

VAREF = 5.0 V

––

±2

LSB

Zero point error

––

±2

Full scale error

––

±2

Total error

––

±2

(VSS = 0.0 V, 2.7 V ≤ VDD < 4.5 V, Topr = −40 to 85°C)

Parameter

Symbol

Condition

Min

Typ.

Max

Unit

Analog reference voltage

VAREF

AVDD − 1.0

–

AVDD

Power supply voltage of analog control

circuit (Note6)

AVDD

VDD

AVSS

VSS

Analog reference voltage range (Note4)

∆VAREF

2.5

–

Analog input voltage

VAIN

VSS

–

VAREF

Power supply current of analog

reference voltage

IREF

VDD = AVDD = VAREF = 4.5 V

VSS = AVSS = 0.0 V

–0.5

0.8

Non linearity error

VDD = AVDD = 2.7 V

VSS = AVSS = 0.0 V

VAREF = 2.7 V

––

±2

LSB

Zero point error

––

±2

Full scale error

––

±2

Total error

––

±2

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