Rainbow-electronics MAX1299 Manual do Utilizador descarregar pdf (Página 2)

MAX1298/MAX1299

12-Bit Serial-Output Temperature Sensors

with 5-Channel ADC

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= 4.75V to 5.25V (MAX1298), V

= +2.7V to 3.6V (MAX1299), external reference, V

REF

= +2.5V (MAX1298), V

REF

= +1.2V

(MAX1299), f

SCLK

= 2.5MHz, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°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.

to GND.……………………………………………-0.3V to +6V

SHO to GND...............................................-0.3V to (V

+ 0.3V)

Analog Inputs to GND

(AIN0, AIN1, AIN2, AIN3, AIN4,

AIN5, REF).............................................-0.3V to (V

+ 0.3V)

Digital Inputs to GND (DIN, SCLK,

CS)......-0.3V to (V

+ 0.3V)

Digital Outputs to GND (DOUT, SSTRB)....-0.3V to (V

+ 0.3V)

Digital Output Sink Current ..…………………………………25mA

Maximum Current into Any Pin……………………………….50mA

Continuous Power Dissipation (T

= +70°C)

16-Pin SSOP (derate 8.00mW/°C above +70°C) ........667mW

Operating Temperature Range

MAX129_ _EAE...............................................-40°C to +85°C

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

Storage Temperature Range .............................-65°C to +150°C

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC ACCURACY (Note 1)

Resolution RES 12 Bits

Relative Accuracy (Note 2) INL ±1 LSB

Differential Nonlinearity DNL ±1 LSB

Offset Error Inputs AIN0−AIN5 ±2 LSB

Offset Temperature Coefficient ±10

µV/ °C

Gain Error Inputs AIN0−AIN5, offset nulled ±4 LSB

/4 Absolute Error ±2 LSB

Gain Temperature Coefficient ±2

ppm/ °C

Channel-to-Channel Offset

Matching

±0.5

LSB

CONVERSION RATE

Voltage measurement 1.1

Conversion Time (Note 3) t

CONV

Temperature measurement 2.2

Track/Hold Acquisition Time t

ACQ

16 µs

Aperture Delay t

APR

30 ns

Internal Clock Frequency f

CLK

57.6 62.3 65.5

kHz

ANALOG INPUTS (AIN0−AIN5)

Input Voltage Range (Note 4) Measurement with respect to IN-, Figure 1

-2V

REF

+2V

REF

Common-Mode Range 0

Input Current (Note 5) 0.1 5 µA

Input Capacitance 16 pF

1 2 3 4 5 6 7 ... 19 20

MAX1298/MAX1299 1

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