MAX1221 datasheet(10/44 Pages) MAXIM

Part #	MAX1221

Description	12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

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Manufacturer	MAXIM [Maxim Integrated Products]

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10 / 44 page

12-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

10

______________________________________________________________________________________

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.)

1.90

1.94

1.92

1.98

1.96

2.02

2.00

2.04

2.5

3.5

4.0

3.0

4.5

5.0

5.5

ANALOG SUPPLY CURRENT

vs. ANALOG SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

1.88

1.92

1.90

1.96

1.94

2.00

1.98

2.02

-40

10

-15

35

60

85

ANALOG SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

AVDD = DVDD = 5V

AVDD = DVDD = 3V

DAC INTEGRAL NONLINEARITY

vs. OUTPUT CODE

OUTPUT CODE

3072

2048

1024

-1.0

-0.5

0

0.5

1.0

1.5

-1.5

0

4096

AVDD = DVDD = 5V

EXTERNAL REFERENCE = 4.096V

DAC INTEGRAL NONLINEARITY

vs. OUTPUT CODE

OUTPUT CODE

3072

2048

1024

-1.0

-0.5

0

0.5

1.0

1.5

-1.5

0

4096

DAC DIFFERENTIAL NONLINEARITY

vs. OUTPUT CODE

OUTPUT CODE

2059

2056

2053

2050

-0.2

0

0.2

0.4

-0.4

2047

2062

AVDD = DVDD = 5V

EXTERNAL REFERENCE = 4.096V

DAC DIFFERENTIAL NONLINEARITY

vs. OUTPUT CODE

OUTPUT CODE

2059

2056

2053

2050

-0.2

0

0.2

0.4

-0.4

2047

2062

0.2

0.4

0.8

0.6

1.0

1.2

2.5

3.5

3.0

4.0

4.5

5.0

5.5

DAC FULL-SCALE ERROR

vs. ANALOG SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

-6

-4

-2

0

2

4

6

8

10

-40

-15

10

35

60

85

DAC FULL-SCALE ERROR

vs. TEMPERATURE

TEMPERATURE (

°C)

EXTERNAL

REFERENCE = 4.096V

AVDD = DVDD = 5V

-6

-4

-2

0

2

4

6

8

10

-40

-15

10

35

60

85

DAC FULL-SCALE ERROR

vs. TEMPERATURE

TEMPERATURE (

°C)

EXTERNAL

REFERENCE = 2.5V

AVDD = DVDD = 3V

INTERNAL

REFERENCE

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