Rainbow-electronics ADC0820 Manual do Utilizador descarregar pdf (Página 3)

DC Electrical Characteristics The following specifications apply for V

5V, unless otherwise specified.

Boldface limits apply from T

MIN

to T

MAX

; all other limits T

Parameter Conditions

ADC0820BCN, ADC0820CCN

Units

Limit

ADC0820CCJ

ADC0820BCV, ADC0820CCV

ADC0820BCWM, ADC0820CCWM

ADC0820CCMSA, ADC0820CIWM

Typ

Tested Design

Typ

Tested Design

(Note 6)

Limit Limit

(Note 6)

Limit Limit

(Note 7) (Note 8) (Note 7) (Note 8)

IN(1)

, Logical ‘‘1’’ V

5.25V CS,WR,RD 2.0 2.0 2.0 V

Input Voltage

Mode 3.5 3.5 3.5 V

IN(0)

, Logical ‘‘0’’ V

4.75V CS,WR,RD 0.8 0.8 0.8 V

Input Voltage

Mode 1.5 1.5 1.5 V

IN(1)

, Logical ‘‘1’’ V

IN(1)

5V; CS,RD 0.005 1 0.005 1 mA

Input Current V

IN(1)

5V; WR 0.1 3 0.1 0.3 3 mA

IN(1)

5V; Mode 50 200 50 170 200 mA

IN(0)

, Logical ‘‘0’’ V

IN(0)

0V; CS,RD,WR,

0.005

1 mA

Input Current Mode

OUT(1)

, Logical ‘‘1’’ V

4.75V, I

OUT

360 mA; 2.4 2.8 2.4 V

Output Voltage DB0– DB7, OFL, INT

4.75V, I

OUT

10 mA; 4.5 4.6 4.5 V

DB0–DB7, OFL

, INT

OUT(0)

, Logical ‘‘0’’ V

4.75V, I

OUT

1.6 mA; 0.4 0.34 0.4 V

Output Voltage DB0– DB7, OFL

, INT, RDY

OUT

, TRI-STATE V

OUT

5V; DB0–DB7, RDY 0.1 3 0.1 0.3 3 mA

Output Current V

OUT

0V; DB0–DB7, RDY

0.1

0.3

3 mA

SOURCE

, Output V

OUT

0V; DB0–DB7, OFL

7.2

6 mA

Source Current INT

4.0

5.3

4.0 mA

SINK

, Output Sink V

OUT

5V; DB0–DB7, OFL,147 14 8.4 7 mA

Current INT, RDY

, Supply Current CS

0 7.5 15 7.5 13 15 mA

AC Electrical Characteristics The following specifications apply for V

5V, t

20 ns, V

REF

(

)

5V,

REF

(

)

0V and T

C unless otherwise specified.

Typ

Tested Design

Parameter Conditions

(Note 6)

Limit Limit Units

(Note 7) (Note 8)

CRD

, Conversion Time for RD Mode Pin 7

(Figure 2)

1.6 2.5 ms

ACC0

, Access Time (Delay from Pin 7

(Figure 2)

CRD

20 t

CRD

50 ns

Falling Edge of RD

to Output Valid)

CWR-RD

, Conversion Time for Pin 7

600 ns, 1.52 ms

WR-RD Mode t

600 ns;

(Figures 3a

and

3b)

, Write Time Min Pin 7

;

(Figures 3a

and

3b)

600 ns

Max (Note 4) See Graph 50 ms

, Read Time Min Pin 7

;

(Figures 3a

and

3b)

600 ns

(Note 4) See Graph

ACC1

, Access Time (Delay from Pin 7

;

(Figure 3a)

Falling Edge of RD to Output Valid) C

15 pF 190 280 ns

100 pF 210 320 ns

ACC2

, Access Time (Delay from Pin 7

;

(Figure 3b)

Falling Edge of RD to Output Valid) C

15 pF 70 120 ns

100 pF 90 150 ns

ACC3

, Access Time (Delay from Rising R

PULLUP

1k and C

15 pF 30 ns

Edge of RDY to Output Valid)

1 2 3 4 5 6 7 8 ... 19 20

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