Rainbow-electronics MAX1143 Manual do Utilizador descarregar pdf (Página 5)

MAX1142/MAX1143

14-Bit ADC, 200ksps, +5V Single-Supply

with Reference

_______________________________________________________________________________________ 5

Note 1: Tested at AV

= DV

= +5V, bipolar input mode.

Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the gain error and offset

error have been nulled.

Note 3: Offset nulled.

Note 4: Conversion time is defined as the number of clock cycles multiplied by the clock period, clock has 50% duty cycle.

Includes the acquisition time.

Note 5: ADC performance is limited by the converter’s noise floor, typically 300µVp-p.

Note 6 When an external reference has a different voltage than the specified typical value, the full scale of the ADC will scale

proportionally.

Note 7: Electrical characteristics are guaranteed from AV

DD(MIN)

= DV

DD(MIN)

to AV

DD(MAX)

= DV

DD(MAX)

. For operations beyond

this range, see the

Typical Operating Characteristics

. For guaranteed specifications beyond the limits, contact

the factory.

Note 8: Defined as the change in positive full-scale caused by a ±5% variation in the nominal supply voltage.

TIMING CHARACTERISTICS (Figures 5 and 6)

(AV

= DV

= +5V ±5%, T

= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT

Acquisition Time t

ACQ

1.14 µs

DIN to SCLK Setup t

50 ns

DIN to SCLK Hold t

0 ns

SCLK to DOUT Valid t

70 ns

CS Fall to DOUT Enable t

LOAD

= 50pF 80 ns

CS Rise to DOUT Disable t

LOAD

= 50pF 80 ns

CS to SCLK Rise Setup t

CSS

100 ns

CS to SCLK Rise Hold t

CSH

0 ns

SCLK High Pulse Width t

80 ns

SCLK Low Pulse Width t

80 ns

SCLK Fall to SSTRB t

SSTRB

LOAD

= 50pF 80 ns

CS Fall to SSTRB Enable t

SDV

LOAD

= 50pF, External clock mode 80 ns

CS Rise to SSTRB Disable t

STR

LOAD

= 50pF, External clock mode 80 ns

SSTRB Rise to SCLK Rise t

SCK

Internal clock mode 0 ns

RST Pulse Width t

208 ns

1 2 3 4 5 6 7 8 9 10 ... 19 20

MAX1142/MAX1143 1
SSOP.EPS 20

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