Rainbow-electronics MAX1093 Manual do Utilizador descarregar pdf (Página 4)

MAX1091/MAX1093

250ksps, +3V, 8-/4-Channel, 10-Bit ADCs

with +2.5V Reference and Parallel Interface

4 _______________________________________________________________________________________

TIMING CHARACTERISTICS

= V

LOGIC

= +2.7V to +3.6V, COM = GND, REFADJ = V

, V

REF

= +2.5V, 4.7µF capacitor at REF pin, f

CLK

= 4.8MHz (50% duty

cycle), T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

Shutdown mode

Standby mode

Operating mode,

SAMPLE

= 250ksps

µA

210

0.9 1.2

2.3 2.6

2.7 3.6

Analog Supply Voltage

150

ELECTRICAL CHARACTERISTICS (continued)

= V

LOGIC

= +2.7V to +3.6V, COM = GND, REFADJ = V

, V

REF

= +2.5V, 4.7µF capacitor at REF pin, f

CLK

= 4.8MHz (50% duty

cycle), T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

LOGIC

Current I

LOGIC

= 20pF

210

µA

Power-Supply Rejection PSR V

= 3V ±10%, full-scale input

±0.4 ±0.7

SAMPLE

= 250ksps

Not converting

1.8 V

+ 0.3

LOGIC

Digital Supply Voltage

WR to CLK Fall Setup Time

CWS

nsCLK Pulse Width High

nsCLK Period

208

CLK Pulse Width Low t

Data Valid to WR Rise Time

WR Rise to Data Valid Hold Time

CLK Fall to WR Hold Time

CWH

CS to CLK or WR

Setup Time

CSWS

CLK or WR to CS

Hold Time

CSWH

CS Pulse Width

100

WR Pulse Width (Note 8)

20 100

nsC

LOAD

= 20pF, Figure 1

PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS

CS Rise to Output Disable

POWER REQUIREMENTS

Internal reference

External reference

1.9 2.3

0.5 0.8

Positive Supply Current

1 2 3 4 5 6 7 8 9 ... 19 20

MAX1091/MAX1093 1

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