MAX1021(2008) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1021
(Rev.:2008)

10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

Maxim Integrated 

10-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

Typical Operating Characteristics (continued)

(AVDD = DVDD = 3V, external VREF = 2.5V, fCLK = 3.6MHz (50% duty cycle), fSAMPLE = 225ksps, CLOAD = 50pF, 0.1µF capacitor at

REF, TA = +25°C, unless otherwise noted.)

ADC REFERENCE SUPPLY CURRENT

vs. TEMPERATURE

41.0

40.9

40.8

40.7

40.6

AVDD = DVDD = 5V

EXTERNAL REFERENCE = 4.096V

40.5

-40 -15 10

35

60

85

TEMPERATURE (°C)

ADC REFERENCE SUPPLY CURRENT

vs. TEMPERATURE

25.1

25.0

24.9

24.8

AVDD = DVDD = 3V

EXTERNAL REFERENCE = 2.5V

24.7

-40 -15

10

35

60

85

TEMPERATURE (°C)

0

-20

-40

-60

-80

-100

-120

-140

-160

0

ADC FFT PLOT

fSAMPLE = 32.768kHz

fANALOG_)N = 10.080kHz

fCLK = 5.24288MHz

SINAD = 61.21dBc

SNR = 61.21dBc

THD = 73.32dBc

SFDR = 81.25dBc

50

100

150

200

ANALOG INPUT FREQUENCY (kHz)

ADC IMD PLOT

0

fCLK = 5.24288MHz

-20

fIN1 = 9.0kHz

fIN2 = 11.0kHz

-40

AIN = -6dBFS

IMD = 78.0dBc

-60

-80

-100

-120

-140

-160

0

50

100

150

200

ANALOG INPUT FREQUENCY (kHz)

DAC OUTPUT LOAD REGULATION

vs. OUTPUT CURRENT

1.29

1.28

1.27

1.26

1.25

1.24

SINKING

1.23

SOURCING

1.22

DAC OUTPUT = MIDSCALE

1.21

-30 -20 -10 0 10 20 30

OUTPUT CURRENT (mA)

0

-20

-40

-60

-80

-100

-120

-140

-160

0

5

ADC CROSSTALK PLOT

fCLK = 5.24288MHz

fIN1 = 10.080kHz

fIN2 = 8.0801kHz

SNR = 61.11dBc

THD = 73.32dBc

ENOB = 9.86 BITS

SFDR = 86.34dBc

50

100

150

200

ANALOG INPUT FREQUENCY (kHz)

GPIO OUTPUT VOLTAGE

vs. SOURCE CURRENT

4

3

GPIOA0, GPIOA1 OUTPUTS

2

GPIOC0, GPIOC1 OUTPUTS

1

AVDD = DVDD = 5V

EXTERNAL REFERENCE = 4.096V

0

0

20

40

60

80 100

SOURCE CURRENT (mA)

DAC OUTPUT LOAD REGULATION

vs. OUTPUT CURRENT

2.08

AVDD = DVDD = 5V

2.07

EXTERNAL REFERENCE = 4.096V

2.06

2.05

2.04

2.03 SINKING

2.02

SOURCING

2.01

DAC OUTPUT = MIDSCALE

2.00

-30

0

30

60

90

OUTPUT CURRENT (mA)

GPIO OUTPUT VOLTAGE

vs. SOURCE CURRENT

3.0

GPIOA0, GPIOA1 OUTPUTS

2.5

2.0

1.5

GPIOC0,

GPIOC1 OUTPUTS

1.0

0.5

0

0

20

40

60

80 100

SOURCE CURRENT (mA)

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