MAX1220 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1220

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

Maxim Integrated 

12-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

ELECTRICAL CHARACTERISTICS (continued)

(VAVDD = VDVDD = 2.7V to 3.6V (MAX1257), external reference VREF = 2.5V (MAX1257), VAVDD = 4.75V to 5.25V, VDVDD = 2.7V to VAVDD

(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 VAVDD = VDVDD = 3V (MAX1257), VAVDD = VDVDD = 5V (MAX1220/MAX1258), TA = +25°C.

Outputs are unloaded, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

Acquisition Time

Conversion Time

tACQ

tCONV

External Clock Frequency

fCLK

Duty Cycle

Aperture Delay

Aperture Jitter

ANALOG INPUTS

Input Voltage Range (Note 6)

Input Leakage Current

Input Capacitance

INTERNAL TEMPERATURE SENSOR

Measurement Error (Notes 5, 7)

Temperature Resolution

INTERNAL REFERENCE

REF1 Output Voltage (Note 8)

(Note 5)

Internally clocked

Externally clocked

Externally clocked conversion (Note 5)

Unipolar

Bipolar

TA = +25°C

TA = TMIN to TMAX

MAX1257

MAX1220/MAX1258

REF1 Voltage Temperature

Coefficient

TCREF

REF1 Output Impedance

REF1 Short-Circuit Current

EXTERNAL REFERENCE

VREF = 2.5V

VREF = 4.096V

REF1 Input Voltage Range

VREF1 REF mode 11 (Note 4)

REF2 Input Voltage Range

(Note 4)

VREF2

REF mode 01

REF mode 11

MIN

0.6

3.6

0.1

40

0

-VREF/2

2.482

4.066

1

1

0

TYP

5.5

30

< 50

MAX

3.6

60

UNITS

µs

µs

MHz

%

ns

ps

VREF

V

+VREF/2

±0.01

±1

µA

24

pF

±0.7

±1.0

1/8

±3.0

°C

°C/LSB

2.50

4.096

±30

6.5

0.39

0.63

2.518

4.126

V

ppm/°C

k

mA

VAVDD

V

+ 0.05

VAVDD

+ 0.05

V

1

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