Rainbow-electronics ADC0848 Manual de usuario descargar pdf (Pagina 3)

Electrical Characteristics The following specifications apply for V

unless otherwise specified.

Boldface limits apply from T

MIN

to T

MAX

; all other limits T

C. (Continued)

ADC0844BCJ

ADC0844BCN, ADC0844CCN

ADC0844CCJ

ADC0848BCN, ADC0848CCN

ADC0848BCJ

ADC0848BCV, ADC0848CCV

Limit

Parameter Conditions

ADC0848CCJ

Units

Typ

Tested Design

Typ

Tested Design

(Note 5)

Limit Limit

(Note 5)

Limit Limit

(Note 6) (Note 7) (Note 6) (Note 7)

DIGITAL AND DC CHARACTERISTICS (Continued)

IN(0)

, Logical ‘‘0’’ Input V

0.005

1 mA

Current (Max)

OUT(1)

, Logical ‘‘1’’ V

4.75V

Output Voltage (Min) I

OUT

360 mA 2.4 2.8 2.4 V

OUT

10 mA 4.5 4.6 4.5 V

OUT(0)

, Logical ‘‘0’’ V

4.75V 0.4 0.34 0.4 V

Output Voltage (Max) I

OUT

1.6 mA

OUT

, TRI-STATE Output V

OUT

0.01

0.3

3 mA

Current (Max) V

OUT

5V 0.01 3 0..01 0.3 3 mA

SOURCE

, Output Source V

OUT

6.5

7.5

6.5 mA

Current (Min)

SINK

, Output Sink V

OUT

16 8.0 16 9.0 8.0 mA

Current (Min)

, Supply Current (Max) CS

1, V

REF

Open 1 2.5 1 2.3 2.5 mA

AC Electrical Characteristics The following specifications apply for V

10 ns unless

otherwise specified. Boldface limits apply from T

MIN

to T

MAX

; all other limits T

Tested Design

Parameter Conditions

Typ

Limit Limit Units

(Note 5)

(Note 6) (Note 7)

, Maximum Conversion Time (See Graph) 30 40 60 ms

W(WR)

, Minimum WR Pulse Width (Note 11) 50 150 ns

ACC

, Maximum Access Time (Delay from Falling Edge of C

100 pF 145 225 ns

RD to Output Data Valid) (Note 11)

, TRI-STATE Control (Maximum Delay from Rising C

10 pF, R

10k 125 200 ns

Edge of RD

to Hi-Z State) (Note 11)

, Maximum Delay from Falling Edge of WR or RD to (Note 11) 200 400 ns

Reset of INTR

, Minimum Data Set-Up Time (Note 11) 50 100 ns

, Minimum Data Hold Time (Note 11) 0 50 ns

, Capacitance of Logic Inputs 5 pF

OUT

, Capacitance of Logic Outputs 5 pF

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating

the device beyond its specified operating conditions.

Note 2: All voltages are measured with respect to the ground pins.

Note 3: When the input voltage (V

) at any pin exceeds the power supply rails (V

or V

) the absolute value of the current at that pin should be

limited to 5 mA or less. The 20 mA package input current limits the number of pins that can exceed the power supply boundaries witha5mAcurrent limit to four.

Note 4: Human body model, 100 pF discharged through a 1.5 kX resistor.

Note 5: Typicals are at 25

C and represent most likely parametric norm.

Note 6: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 7: Design limits are guaranteed by not 100% tested. These limits are not used to calculate outgoing quality levels.

Note 8: Total unadjusted error includes offset, full-scale, linearity, and multiplexer error.

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Rainbow-electronics ADC0848 Manual de usuario Pagina 3

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