Rainbow-electronics ADC10321 Bedienungsanleitung PDF herunterladen (Seite 6)

Converter Electrical Characteristics (Continued)

The following specifications apply for V

A

= +5.0V

DC

,V

D

= 5.0V

DC

,V

D

I/O = 5.0V

DC

,V

REF

+ = +3.5V

DC

,V

REF

− = +1.5V

DC

,

C

L

= 20pF, f

CLK

= 20MHz, R

S

=25Ω. Boldface limits apply for T

A

=T

MIN

to T

MAX

: all other limits T

A

= 25˚C(Note 7)

Symbol Parameter Conditions

Typical

(Note 8)

Limits

(Note 9)

Units

C

IN

Analog V

IN

Input

Capacitance

5pF

I

IN

Input Leakage Current 10 µA

R

REF

Reference Ladder

Resistance

1000

850

1150

Ω(min)

Ω(max)

V

REF

+ Positive Reference Voltage 3.5 4.0 V(max)

V

REF

− Negative Reference Voltage 1.5 1.3 V(min)

(V

REF

+) −

(V

REF

−)

Total Reference Voltage 2.0

1.0

2.7

V(min)

V(max)

DC and Logic Electrical Characteristics

The following specifications apply for V

A

= +5.0V

DC

,V

D

= +5.0V

DC

,V

D

I/O = 5.0V

DC

,V

REF

+ = +3.5V

DC

,V

REF

− = +1.5V

DC

,C

L

= 20 pF, f

CLK

= 20MHz, R

S

=25Ω. Boldface limits apply for T

A

=T

MIN

to T

MAX

: all other limits T

A

= 25˚C(Note 7)

Symbol Parameter Conditions

Typical

(Note 8)

Limits

(Note 9)

Units

CLK, OE, PD, Digital Input Characteristics

V

IH

Logical "1" Input Voltage V

D

= 5.5V 2.0 V(min)

V

IL

Logical "0" Input Voltage V

D

= 4.5V 1.0 V(max)

I

IH

Logical "1" Input Current V

IH

=V

D

10 µA

I

IL

Logical "0" Input Current V

IL

= DGND −10 µA

D00 - D13 Digital Output Characteristics

V

OH

Logical "1" Output

Voltage

V

D

I/O = + 4.5V, I

OUT

= −0.5mA

V

D

I/O = + 2.7V, I

OUT

= −0.5mA

4.0

2.4

V(min)

V(min)

V

OL

Logical "0" Output

Voltage

V

D

I/O = + 4.5V, I

OUT

= −1.6mA

V

D

I/O = + 2.7V, I

OUT

= −1.6mA

0.4

0.4

V(max)

V(max)

I

OZ

TRI-STATE Output

Current

V

OUT

= DGND

V

OUT

=V

D

−10

10

µA

µA

I

OS

Output Short Circuit

Current

V

D

I/O=3V

±

12 mA

V

D

I/O=5V

±

25 mA

Power Supply Characteristics

I

A

Analog Supply Current

PD = LOW, Ref not included

PD = HIGH, Ref not included

14.5

0.5

16 mA(max)

I

D

+I

D

I/O Digital Supply Current

PD = LOW, Ref not included

PD = HIGH, Ref not included

5

0.2

6 mA(max)

P

D

Power Consumption 98 110 mW (max)

AC Electrical Characteristics

The following specifications apply for V

A

= +5.0V

DC

,V

D

I/O = 5.0V

DC

,V

REF

+ = +3.5V

DC

,V

REF

− = +1.5V

DC

,f

CLK

= 20MHz, t

rc

=t

fc

= 5ns, R

S

=25Ω.C

L

(data bus loading) = 20 pF, Boldface limits apply for T

A

=T

MIN

to T

MAX

: all other limits T

A

=

25˚C(Note 7)

Symbol Parameter Conditions

Typical

(Note 8)

Limits

(Note 9)

Units

(Limits)

f

CLK1

Maximum Clock Frequency 25 20 MHz(min)

f

CLK2

Minimum Clock Frequency 1 MHz(max)

t

CH

Clock High Time 23 ns(min

t

CL

Clock Low Time 23 ns(min)

Duty Cycle 50

45

55

%(min)

%(max)

ADC10321

www.national.com 6

1 2 3 4 5 6 7 8 9 10 11 ... 17 18

Kommentare zu diesen Handbüchern

Keine Kommentare