MAX1238 Ver la hoja de datos (PDF) - Maxim Integrated

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MAX1238

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

ABSOLUTE MAXIMUM RATINGS

VDD to GND ..............................................................-0.3V to +6V

AIN0–AIN11,

REF to GND ............-0.3V to the lower of (VDD + 0.3V) and 6V

SDA, SCL to GND.....................................................-0.3V to +6V

Maximum Current Into Any Pin .........................................±50mA

Continuous Power Dissipation (TA = +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW

16-Pin QSOP (derate 8.3mW/°C above +70°C)........666.7mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-60°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(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.)

PARAMETER

DC ACCURACY (Note 1)

Resolution

Relative Accuracy

Differential Nonlinearity

Offset Error

SYMBOL

CONDITIONS

INL

DNL

(Note 2)

No missing codes over temperature

MIN TYP MAX UNITS

12

Bits

±1

LSB

±1

LSB

±4

LSB

Offset-Error Temperature

Coefficient

Relative to FSR

0.3

ppm/°C

Gain Error

Gain-Temperature Coefficient

(Note 3)

Relative to FSR

±4

LSB

0.3

ppm/°C

Channel-to-Channel Offset

Matching

±0.1

LSB

Channel-to-Channel Gain

Matching

±0.1

LSB

DYNAMIC PERFORMANCE (fIN(SINE-WAVE) = 10kHz, VIN(P-P) = VREF, fSAMPLE = 94.4ksps)

Signal-to-Noise Plus Distortion

SINAD

70

Total Harmonic Distortion

THD Up to the 5th harmonic

-78

Spurious-Free Dynamic Range

SFDR

78

Full-Power Bandwidth

SINAD > 68dB

3

Full-Linear Bandwidth

-3dB point

5

CONVERSION RATE

Conversion Time (Note 4)

tCONV

Internal clock

External clock

10.6

dB

dB

dB

MHz

MHz

7.5

µs

2 _______________________________________________________________________________________

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