MAX1137 datasheet(6/22 Pages) MAXIM

Part #	MAX1137

Description	2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs

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Manufacturer	MAXIM [Maxim Integrated Products]

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6 / 22 page

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,

4-/12-Channel, 2-Wire Serial 10-Bit ADCs

6

_______________________________________________________________________________________

Typical Operating Characteristics

(VDD = 3.3V (MAX1137/MAX1139), VDD = 5V (MAX1136/MAX1138), fSCL = 1.7MHz, external clock, fSAMPLE = 94.4ksps, single-

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

-0.3

-0.1

-0.2

0.1

0

0.2

0.3

0

1000

DIFFERENTIAL NONLINEARITY

vs. DIGITAL CODE

DIGITAL OUTPUT CODE

400

200

600

800

-0.5

-0.2

-0.3

-0.4

-0.1

0

0.1

0.2

0.3

0.4

0.5

0400

200

600

800

1000

INTEGRAL NONLINEARITY

vs. DIGITAL CODE

DIGITAL OUTPUT CODE

-160

-140

-120

-100

-80

-60

-40

-20

0

10k

20k

30k

40k

50k

FFT PLOT

FREQUENCY (Hz)

fSAMPLE = 94.4ksps

fIN = 10kHz

300

400

350

500

450

600

550

650

750

700

800

-40

-10

5

-25

20

35

50

65

80

SUPPLY CURRENT vs. TEMPERATURE

(MAX1138/MAX1139)

TEMPERATURE (

°C)

INTERNAL REFERENCE

MAX1138/1136

MAX1139/1137

MAX1138/1136

MAX1139/1137

INTERNAL REFERENCE

EXTERNAL REFERENCE

SETUP BYTE

EXT REF: 10111011

INT REF: 11011011

0

0.2

0.1

0.4

0.3

0.5

0.6

2.7

5.2

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

INPUT VOLTAGE (V)

3.7

3.2

4.2

4.7

SDA = SCL = VDD

0

0.10

0.05

0.20

0.15

0.30

0.25

0.35

0.45

0.40

0.50

-40

-10

5

-25

20

35

50

65

80

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

MAX1138

MAX1139

200

300

250

350

400

450

500

550

600

650

700

750

800

020 30 40

60

80

100

AVERAGE SUPPLY CURRENT vs.

CONVERSION RATE (EXTERNAL CLOCK)

CONVERSION RATE (ksps)

010

50

70

90

A

B

A) INTERNAL REFERENCE ALWAYS ON

B) EXTERNAL REFERENCE

MAX1138

0.9990

0.9994

0.9992

0.9998

0.9996

1.0002

1.0000

1.0004

1.0008

1.0006

1.0010

-40

-10

5

-25

20

35

50

65

80

INTERNAL REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

MAX1138

MAX1139

NORMALIZED TO REFERENCE VALUE

AT +25

°C

0.99990

0.99994

0.99992

0.99998

0.99996

1.00002

1.00000

1.00004

1.00008

1.00006

1.00010

2.7

3.3 3.6 3.9

3.0

4.2 4.5 4.8 5.1 5.4

NORMALIZED REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

VDD (V)

MAX1138/MAX1136,

NORMALIZED TO

REFERENCE VALUE AT

VDD = 5V

MAX1139/MAX1137,

NORMALIZED TO

REFERENCE VALUE AT

VDD = 3.3V

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