Rainbow-electronics MAX194 Bedienungsanleitung PDF herunterladen (Seite 4)

MAX194

14-Bit, 85ksps ADC with 10µA Shutdown

4 _______________________________________________________________________________________

VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V

VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,

BP/UP/SHDN = 0V

VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,

BP/UP/SHDN = 0V

VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,

BP/UP/SHDN = 0V

VDDD = VDDA = 5.25V, VSSD = VSSA = -5.25V,

BP/UP/SHDN = 0V

CONDITIONS

mW80Power Dissipation

µA0.1 5I

SSA

VSSA Shutdown Supply Current

µA0.1 5I

DDA

VDDA Shutdown Supply Current

µA1.6 5I

DDD

VDDD Shutdown Supply Current

(Note 5)

µA0.1 5I

SSD

VSSD Shutdown Supply Current

UNITSMIN TYP MAXSYMBOLPARAMETER

ELECTRICAL CHARACTERISTICS (continued)

(VDDD = VDDA = +5V, VSSD = VSSA = -5V, f

CLK

= 1.7MHz, V

REF

= +5V, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at T

= +25°C.)

TIMING CHARACTERISTICS

(VDDD = VDDA = +5V, VSSD = VSSA = -5V, unless otherwise noted.)

Note 1: Accuracy and dynamic performance tests performed after calibration.

Note 2: Tested with 50% duty cycle. Duty cycles from 25% to 75% at 1.7MHz are acceptable.

Note 3: See

External Clock

section.

Note 4: Guaranteed by design, not tested.

Note 5: Measured in shutdown mode with CLK and SCLK low.

POWER REQUIREMENTS (cont.)

PARAMETER SYMBOL CONDITIONS

= +25°C

TYP

= 0°C to

+70°C

MIN MAX

= -40°C to

+85°C

MIN MAX

= -55°C to

+125°C

MIN MAX

UNITS

CONV Pulse Width

20 30 35 ns

CONV to CLK Falling

Synchronization (Note 4)

CC1

10 10 10 ns

CONV to CLK Rising

Synchronization (Note 4)

CC2

40 40 ns

Data Access Time t

= 50pF 80 80

Bus Relinquish Time t

= 10pF 40 40 40 ns

CLK to EOC High

CEH

= 50pF 300 300 350 ns

CLK to EOC Low

CEL

= 50pF 300 300 350 ns

CLK to DOUT Valid t

= 50pF 100 350 100 375 100 400 ns

SCLK to DOUT Valid t

= 50pF 20 140 20 160 20 160 ns

CS to SCLK Setup Time

CSS

75 75 75 ns

CS to SCLK Hold Time

CSH

-10 -10 -10 ns

Acquisition Time t

2.4 2.4 2.4 µs

Calibration Time t

CAL

14,000(

CLK

) 8.2 8.2 8.2 ms

RESET to CLK Setup Time

RCS

-40 -40 -40 ns

RESET to CLK Hold Time

RCH

120 120 120

Start-Up Time (Note 6) t

Exiting

shutdown

3.2

µs

Note 6: Settling time required after deasserting shutdown to achieve less than 0.1LSB additional error.

1 2 3 4 5 6 7 8 9 ... 23 24

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