Rainbow-electronics MAX152 Manual do Utilizador descarregar pdf (Página 4)

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MAX152

+3V, 8-Bit ADC with 1µA Power-Down

4 _______________________________________________________________________________________

PARAMETER SYMBOL CONDITIONS

MAX152C/E

= T

MIN

to T

MAX

MIN MAX

MAX152M

= T

MIN

to T

MAX

MIN MAX

UNITS

WR Pulse Width

0.6 10 0.66 10 0.8 10 µs

Delay Time Between

WR and RD Pulses

0.8 0.9 1.0 µs

RD Pulse Width

400 500 600 ns

ACC1

400 500 600 ns

RD to INT Delay

300 340 400 ns

CWR

< t

INTL

= 100pF

1.8 2.06 2.4 µs

Conversion Time

(RD Mode)

CRD

2.0 2.3 2.6 µs

Power-Up Time

0.9 1.2 1.4 µs

CS to RD,WR

Setup Time

CSS

0 0 0 ns

CS to RD,WR

Hold Time

CSH

0 0 0 ns

CS to RDY

Delay

RDY

= 50pF,

= 5.1kΩ to V

100 120 140 ns

WR to INT Delay

INTL

= 50pF

0.7 1.45 1.6 1.8

RD Pulse Width

WR-RD mode,

> t

INTL

determined by t

ACC2

(Figure 5)

180 220 250 ns

Data Access Time

(Note 7)

ACC2

180 220 250 ns

WR to INT Delay

IHWR

180 200 240 ns

Data Access Time

After INT (Note 7)

Stand-alone mode,

= 100pF

100 130 150 ns

Data Access Time

(RD Mode) (Note 7)

ACC0

= 100pF

CRD

+100

CRD

+150

RD to INT Delay

(RD Mode)

INTH

= 50pF

100 160 170 180 ns

Data Hold Time

(Note 8)

100 130 150 ns

450 600 700 ns

ALL GRADES

= +25°C

MIN TYP MAX

Conversion Time

(WR-RD Mode)

Delay Time Between

Conversions

Data Access Time

(Note 7)

WR-RD mode,

determined by t

ACC1

(Figure 6)

WR-RD mode,

< t

INTL

, C

= 100pF

(Figure 6)

WR-RD mode,

< t

INTL

, C

= 100pF

(Figure 5)

CRD

+130

µs

TIMING CHARACTERISTICS

(Unipolar input range, V

= 3V, V

= 0V, T

= +25°C, unless otherwise noted.) (Note 6)

Note 6: Input control signals are specified with t

= t

= 5ns, 10% to 90% of +3.0V, and timed from a voltage level of 1.3V. Timing

delays get shorter at higher supply voltages. See the Converson Time vs. Supply Voltage graph in the

Typical Operating

Characteristics

to extrapolate timing delays at other power-supply voltages.

Note 7: See Figure 1 for load circuit. Parameter defined as the time required for the output to cross 0.66V or 2.0V.

Note 8: See Figure 2 for load circuit. Parameter defined as the time required for the data lines to change 0.5V.

Stand-alone mode,

= 50pF

1 2 3 4 5 6 7 8 9 10 11 12

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