MAX1258BETM datasheet(4/47 Pages) MAXIM

Part #	MAX1258BETM

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

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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4 / 47 page

12-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD = DVDD = 2.7V to 3.6V (MAX1257), external reference VREF = 2.5V (MAX1257), AVDD = 4.75V to 5.25V, DVDD = 2.7V to AVDD

(MAX1220/MAX1258), external reference VREF = 4.096V (MAX1220/MAX1258), fCLK = 3.6MHz (50% duty cycle), TA = -40°C to +85°C,

unless otherwise noted. Typical values are at AVDD = DVDD = 3V (MAX1257), AVDD = DVDD = 5V (MAX1220/MAX1258), TA = +25°C.

Outputs are unloaded, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VREF = 2.5V (MAX1257), fSAMPLE = 225ksps

25

80

VREF = 4.096V (MAX1220/MAX1258),

fSAMPLE = 225ksps

40

80

REF1 Input Current (Note 9)

IREF1

Acquisition between conversions

±0.01

±1

µA

VREF = 2.5V (MAX1257), fSAMPLE = 225ksps

25

80

VREF = 4.096V (MAX1220/MAX1258),

fSAMPLE = 225ksps

40

80

REF2 Input Current

IREF2

Acquisition between conversions

±0.01

±1

µA

DAC

DC ACCURACY (Note 10)

Resolution

12

Bits

Integral Nonlinearity

INL

±0.5

±4

LSB

Differential Nonlinearity

DNL

Guaranteed monotonic

±1.0

LSB

Offset Error

VOS

(Note 8)

±3

±10

mV

Offset-Error Drift

±10

ppm of

FS/°C

Gain Error

GE

(Note 8)

±5

±10

LSB

Gain Temperature Coefficient

±8

ppm of

FS/°C

DAC OUTPUT

No load

0.02

AVDD -

0.02

Output-Voltage Range

10k

Ω load to either rail

0.1

AVDD -

0.1

V

DC Output Impedance

0.5

Ω

Capacitive Load

(Note 11)

1

nF

AVDD = 2.7V, VREF = 2.5V (MAX1257),

gain error < 1%

2000

Resistive Load to AGND

RL

AVDD = 4.75V, VREF = 4.096V

(MAX1220/MAX1258), gain error < 2%

500

Ω

From power-down mode, AVDD = 5V

25

Wake-Up Time (Note 12)

From power-down mode, AVDD = 2.7V

21

µs

1k

Ω Output Termination

Programmed in from power-down mode

1k

Ω

100k

Ω Output Termination

At wake-up or programmed in

power-down mode

100

k

Ω

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MAX1258BETM Datasheet(PDF) 4 Page - Maxim Integrated Products

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