MB40578 Ver la hoja de datos (PDF) - Fujitsu

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MB40578

1 CHANNEL 8-BIT VIDEO A/D CONVERTER

Fujitsu 

MB40578

Step

0

1

Figure 5 Output Code

Analog Input Voltage

2.960 V

2.968 V

(V CC=5.0 V,V RT=5.0 V,V RB=3.0 V)

OUTPUT VOLTAGE(V)

00000000

00000001

127

3.976 V

128

3.984 V

129

3.992 V

01111111

10000000

10000001

245

4.992 V

1111110

255

5.000 V

11111111

Note : Ajust V ZT=2.964 V and V FT=4.996 V with V RT and V RB.The Analog Input Voltage are the center

values of each step.

Figure 6 Ideal Conversion Characteristics

Figure 7 Actual Conversion Characteristics

STEP OUTPUT CODE

255 11111111

254 11111110

253 11111101

STEP OUTPUT CODE

255 11111111

254 11111110

253 11111101

LE253

129 10000001

128 10000000

127 01111111

129 10000001

128 10000000

127 01111111

LE129

LE128

LE127

2 00000010

1 00000001

0 00000000

2.964 V

Input Voltage V INA

4.996 V

2 00000010

1 00000001

0 00000000

LE2

LE1

V ZT

V FT

Input Voltage V INA

Linearity Error = LE n max.

FS

8

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