Rainbow-electronics MAX1099 Manual de usuario descargar pdf (Pagina 3)

MAX1098/MAX1099

10-Bit Serial-Output Temperature Sensors

with 5-Channel ADC

________________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

DD

= +4.75V to +5.25V (MAX1098), V

DD

= +2.7V to +3.6V (MAX1099), external reference, V

REF

= +2.5V (MAX1098), V

REF

= +1.2V

(MAX1099), f

SCLK

= 2.5MHz, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

A

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIGITAL INPUTS

Input Voltage Low V

IL

0.8 V

Input Voltage High V

IH

V

D D

- 0.8 V

Input Hysteresis V

HYST

0.2 V

Input Leakage Current I

IN

1 µA

Input Capacitance 16 pF

DIGITAL OUTPUTS V

Output Low Voltage V

OL

I

SINK

= 5mA 0.6 V

Output High Voltage V

OH

I

SOURCE

= 0.5mA V

D D

- 0.6 V

Three-State Output Leakage

Current

I

OUT

±10 µA

Three-State Output

Capacitance

15 pF

POWER REQUIREMENTS

MAX1098 4.75 5.25

Positive Supply Voltage V

DD

MAX1099 2.7 3.6

V

MAX1098 390

Full-on, voltage measurements,

internal reference

MAX1099 350

MAX1098 310

Full-on, voltage measurements,

external reference

MAX1099 280

MAX1098 440 500

Ful l - on, tem p er atur e m easur em ents,

i nter nal r efer ence

MAX1099 400 500

MAX1098 360

Ful l - on, tem p er atur e m easur em ents,

exter nal r efer ence

MAX1099 330

Standby, SCLK = GND 120

Standby-plus, SCLK = GND 190

Positive Supply Current

(Note 6)

I

DD

Shutdown, SCLK = GND 2 10

µA

Power-Supply Rejection

PSRR (Note 7) 50 65 dB

INTERNAL VOLTAGE REFERENCE CHARACTERISTICS

V

DD

= 5V MAX1098

2.494 2.50 2.506

Reference Voltage V

REF

V

DD

= 3V MAX1099 1.197 1.20 1.203

V

Reference Tempco TC V

REF

±20 ppm/°C

Output Short-Circuit Current 1.25 mA

Capacitive Bypass at REF 0.1 µF

MAX1098 130

REF Output Noise f

N

= 10Hz to 10kHz

MAX1099 65

µV

RMS

MAX1098 +3.0

REF Line Regulation

MAX1099 +0.2

mV/V

MAX1098 4 10

REF Load Regulation

0 to 100µA output current

(Note 8)

MAX1099 2 10

µV/µA

1 2 3 4 5 6 7 8 ... 19 20

MAX1098/MAX1099 1

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