MAX1236 Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

MAX1236

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

Maxim Integrated 

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

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

TIMING CHARACTERISTICS (Figure 1) (continued)

(VDD = 2.7V to 3.6V (MAX1237/MAX1239), VDD = 4.5V to 5.5V (MAX1236/MAX1238), VREF = 2.048V (MAX1237/MAX1239), VREF =

4.096V (MAX1236/MAX1238), CREF = 0.1µF, fSCL = 1.7MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at

TA = +25°C, see Tables 1–5 for programming notation.)

and for the MAX1236/MAX1238 where N is the number of bits and VREF.

[ ] 

 VFS(5.5V) − VFS(4.5V)



×

2N −

1



VREF 

(5.5V − 4.5V)

Note 10: A master device must provide a data hold time for SDA (referred to VIL of SCL) in order to bridge the undefined region of

SCL’s falling edge (see Figure 1).

Note 11: CB = total capacitance of one bus line in pF.

Note 12: fSCL must meet the minimum clock low time plus the rise/fall times.

Typical Operating Characteristics

(VDD = 3.3V (MAX1237/MAX1239), VDD = 5V (MAX1236/MAX1238), fSCL = 1.7MHz, (50% duty cycle), fSAMPLE = 94.4ksps, single-

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

DIFFERENTIAL NONLINEARITY

vs. DIGITAL CODE

0.5

0.4

0.3

0.2

0.1

0

0.1

-0.2

-0.3

-0.4

-0.5

0

500 1000 1500 2000 2500 3000 3500 4000

DIGITAL OUTPUT CODE

INTEGRAL NONLINEARITY

vs. DIGITAL CODE

1.0

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1.0

0 500 1000 1500 2000 2500 3000 3500 4000

DIGITAL OUTPUT CODE

FFT PLOT

-60

fSAMPLE = 94.4ksps

fIN = 10kHz

-80

-100

-120

-140

-160

-180

0

10k 20k 30k 40k 50k

FREQUENCY (Hz)

SUPPLY CURRENT vs. TEMPERATURE

(MAX1238/MAX1239)

800

750 INTERNAL REFERENCE MAX1238/MAX1236

700

SETUP BYTE

650

EXT REF: 10111011

INT REF: 11011011

600

550 INTERNAL REFERENCE MAX1239/MAX1237

500

450 EXTERNAL REFERENCE MAX1238/MAX1236

400

350 EXTERNAL REFERENCE MAX1239/MAX1237

300

-40 -25 -10 5 20 35 50 65 80

TEMPERATURE (°C)

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

0.6

SDA = SCL = VDD

0.5

0.4

0.3

0.2

0.1

0

2.7 3.2 3.7 4.2 4.7 5.2

INPUT VOLTAGE (V)

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

0.50

0.45

0.40 MAX1238

0.35

0.30

0.25

MAX1239

0.20

0.15

0.10

0.05

0

-40 -25 -10 5 20 35 50 65 80

TEMPERATURE (°C)

6 _______________________________________________________________________________________

Share Link: