MAX1253 datasheet(3/29 Pages) MAXIM

Part #	MAX1253

Description	Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor

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Manufacturer	MAXIM [Maxim Integrated Products]

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Stand-Alone, 10-Channel, 12-Bit System Monitors

with Internal Temperature Sensor and VDD Monitor

_______________________________________________________________________________________

3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage Current

On-/off-leakage, VIN = 0 or VDD

±1

µA

Input Capacitance

(Note 6)

18

pF

TEMPERATURE MEASUREMENTS

TA = -20°C to +85°C

±0.5

±1.0

TA = -40°C to +85°C

±0.75

±1.5

Grade A

MAX1253

MAX1254

TA = +25°C

±0.3

TA = -40°C to +85°C

±1.2

±2.5

Grade B

MAX1253

TA = +25°C

±0.7

TA = -40°C to +85°C

±1.2

±3.0

Internal Sensor Measurement Error

(Note 7)

Grade B

MAX1254

TA = +25°C

±0.7

°C

TA = -40°C to +85°C±2

Differential

TA = +25°C±1

TA = -40°C to +85°C±5

External Sensor Measurement

Error (Note 8)

Single ended

TA = +25°C±2

°C

Differentially configured inputs and internal

sensor

0.3

Temperature Measurement Noise

Single-ended configured, external sensor

0.1

°C

Temperature Resolution

0.125

°C/LSB

Low

4

External Sensor Bias Current

High

66

µA

Differentially configured inputs and internal

sensor

0.3

Power-Supply Rejection

PSR

Single-ended configured, external sensor

0.1

°C/V

INTERNAL REFERENCE

MAX1253

2.456

2.500

2.544

REF Output Voltage

VREF

MAX1254

4.024

4.096

4.168

V

Grade A

±8

REF Temperature Coefficient

TCREF

Grade B

±30

ppm/°C

REF Output Resistance

7k

Ω

MAX1253

200

REF Output Noise

MAX1254

160

µVRMS

MAX1253

-70

-50

REF Power-Supply Rejection Ratio

PSRR

MAX1254

-70

-50

dB

EXTERNAL REFERENCE

REF Input Voltage Range

VREF

1.0

VDD + 0.05

V

VREF = +2.5V; fSAMPLE = 94ksps

15

40

REF Input Current

IREF

In power-down

±1

µA

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +2.7V to +3.6V (MAX1253), VDD = +4.5V to +5.5V (MAX1254), VREF = +2.5V (MAX1253), VREF = +4.096V (MAX1254), fSCLK

= 10MHz (50% duty cycle), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

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