UPD78322 datasheet(71/88 Pages) NEC

71 / 88 page

µPD78320, 78322

A/D CONVERTER CHARACTERISTICS (TA = –10 to +70

°C, VDD = +5 V ±10 %, VSS = AVSS = 0 V,

VDD – 0.5 V

≤ AVDD ≤ VDD)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Resolution

bit

Total error Note 1

4.5 V

≤ AVREF ≤ AVDD

±0.4

%FSR

3.4 V

≤ AVREF ≤ AVDD

±0.7

%FSR

Quantization error

±1/2

LSB

Conversion time

tCONV

144

tCYK

Sampling time

tSAMP

tCYK

Zero scale error Note 1

4.5 V

≤ AVREF ≤ AVDD

±1.5

±2.5

LSB

3.4 V

≤ AVREF ≤ AVDD

±1.5

±4.5

LSB

Full scale error Note 1

4.5 V

≤ AVREF ≤ AVDD

±1.5

±2.5

LSB

3.4 V

≤ AVREF ≤ AVDD

±1.5

±4.5

LSB

Non-linear error Note 1

4.5 V

≤ AVREF ≤ AVDD

±1.5

±2.5

LSB

3.4 V

≤ AVREF ≤ AVDD

±1.5

±4.5

LSB

Analog input voltage Note 2

VIAN

–0.3

AVDD

Reference voltage

AVREF

3.4

AVDD

AVREF current

AIREF

1.0

3.0

AVDD supply current

AIDD

2.0

6.0

A/D converter data

AVDDR = 2.5 V

2.0

µA

retention current

AVDDR = 5 V

±10 %

µA

STOP mode

AIDDR

Notes

1. Quantization error excluded.

2. When –0.3 V

≤ VIAN ≤ 0 V, the conversion result becomes 000H.

When 0 V < VIAN < AVREF, the conversion is performed at a resolution of 10 bits.

When AVREF

≤ VIAN ≤ AVDD, the conversion result is 3FFH.

UPD78322 Datasheet(PDF) 71 Page - NEC

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