Rainbow-electronics MAX1145 Manual do Utilizador descarregar pdf (Página 6)

MAX1144/MAX1145

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(MAX1144/MAX1145, AV

= DV

= 3.3V, f

SCLK

= 3.6MHz, external clock (50% duty cycle), 24 clocks/conversion (150ksps),

bipolar input, REF = 2.048V, 4.7µF on REF, 1µF on CREF, T

= +25°C, unless otherwise noted.)

OFFSET VOLTAGE

vs. TEMPERATURE

MAX1144/45 toc04

TEMPERATURE (

OFFSET ERROR (mV)

806020 400-20

-2.5

-2.0

-1.0

-0.5

-40

A: AV

, DV

= 3.135V

B: AV

, DV

= 3.3V

C: AV

, DV

= 3.465V

-1.5

GAIN ERROR

vs. TEMPERATURE

MAX1144/45 toc05

TEMPERATURE (

GAIN ERROR (% FULL SCALE)

806020 400-20

0.01

0.03

0.02

0.04

0.05

0.06

-40

A: AV

, DV

= 3.135V

B: AV

, DV

= 3.3V

C: AV

, DV

= 3.465V

TOTAL SUPPLY CURRENT vs.

CONVERSION RATE (USING SHUTDOWN)

MAX1144/45 toc06

CONVERSION RATE (ksps)

TOTAL SUPPLY CURRENT (mA)

1000100101

0.01

100

0.1

FFT PLOT

MAX1144/45 toc07

FREQUENCY (kHz)

AMPLITUDE (dB)

605040302010

-100

-80

-60

-40

-20

-120

070

SAMPLE

= 150kHz

= 5kHz

SINAD PLOT

MAX1144/45 toc08

FREQUENCY (kHz)

AMPLITUDE (dB)

101

100

0.1 100

SAMPLE

= 150kHz

SFDR PLOT

MAX1144/45 toc09

FREQUENCY (kHz)

AMPLITUDE (dB)

101

100

110

120

0.1 100

SAMPLE

= 150kHz

THD PLOT

MAX1144/45 toc10

FREQUENCY (kHz)

AMPLITUDE (dB)

101

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-110

0.1 100

SAMPLE

= 150kHz

14-Bit ADCs, 150ksps, 3.3V Single Supply

1 2 3 4 5 6 7 8 9 10 11 ... 17 18

MAX1144/MAX1145 1

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