MAX1145ACAP datasheet(6/18 Pages) MAXIM

Part #	MAX1145ACAP

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

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Manufacturer	MAXIM [Maxim Integrated Products]

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6

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Typical Operating Characteristics (continued)

(MAX1144/MAX1145, AVDD = DVDD = 3.3V, fSCLK = 3.6MHz, external clock (50% duty cycle), 24 clocks/conversion (150ksps),

bipolar input, REF = 2.048V, 4.7µF on REF, 1µF on CREF, TA = +25°C, unless otherwise noted.)

OFFSET VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

20

40

0

-20

-2.5

-2.0

-1.0

-0.5

0

-40

A: AVDD, DVDD = 3.135V

B: AVDD, DVDD = 3.3V

C: AVDD, DVDD = 3.465V

C

B

A

-1.5

GAIN ERROR

vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

20

40

0

-20

0.01

0

0.03

0.02

0.04

0.05

0.06

-40

A: AVDD, DVDD = 3.135V

B: AVDD, DVDD = 3.3V

C: AVDD, DVDD = 3.465V

C

B

A

TOTAL SUPPLY CURRENT vs.

CONVERSION RATE (USING SHUTDOWN)

CONVERSION RATE (ksps)

1000

100

10

1

0.01

100

10

1

0.1

0

FFT PLOT

FREQUENCY (kHz)

60

50

40

30

20

10

-100

-80

-60

-40

-20

0

-120

070

fSAMPLE = 150kHz

fIN = 5kHz

SINAD PLOT

FREQUENCY (kHz)

10

1

10

20

30

40

50

60

70

80

90

100

0

0.1

100

fSAMPLE = 150kHz

SFDR PLOT

FREQUENCY (kHz)

10

1

10

20

30

40

50

60

70

80

90

100

110

120

0

0.1

100

fSAMPLE = 150kHz

THD PLOT

FREQUENCY (kHz)

10

1

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-110

0.1

100

fSAMPLE = 150kHz

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

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