MAX1454_11 Datasheet, PDF(5/25 Page) Maxim Integrated Products – Precision Sensor Signal Conditioner with Overvoltage Protection

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MAX1454

Precision Sensor Signal Conditioner

with Overvoltage Protection

ELECTRICAL CHARACTERISTICS (continued)

(VDDX = 5V, VGND = 0V, TA = +25NC, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

Operating Current

(Note 4)

Program/Erase Current

(Note 4)

TEMPERATURE-TO-DIGITAL CONVERTER

Temperature ADC Resolution

Offset

Gain

Nonlinearity

Lowest Digital Output

Highest Digital Output

DIGITAL INPUT (OUT/DIO)

Input Low Voltage

VIL

Input High Voltage

VIH

OVERVOLTAGE PROTECTION

Overvoltage-Protection

Threshold

FAULT DETECTION

IN+/IN- Low Comparator

Threshold

IN+/IN- High Comparator

Threshold

Detection-Threshold Accuracy

Comparator Hysteresis

Output Clip Level During Fault

Conditions

IOUT = 1mA sinking

MIN TYP MAX UNITS

1.5

Q0.5

0x00

0xAF

Bits

LSB

NC/Bit

LSB

hex

VDDX x

2/3

VDDX/3

VDDX

5.53 5.75 6.0

0.2 x

VBDR

0.8 x

VBDR

Q25

150 250

Note 2: All units are production tested at TA = +25NC and +125NC. Specifications over temperature are guaranteed by design.

Note 3: Excludes sensor or load current. Analog mode with voltage excitation on BDR pin, FSODAC = 0x8000.

Note 4: Specification is guaranteed by design.

Note 5: All electronics temperature errors are compensated together with sensor errors.

Note 6: The sensor and the device must be at the same temperature during calibration and use.

Note 7: This is the maximum allowable sensor offset.

Note 8: This is the sensorâs sensitivity normalized to its drive voltage, assuming a desired full-span output of VDDX - 1V and a

nominal bridge voltage of VDDX/2.

Note 9: Bit weight is ratiometric to VDDX.

Note 10: Programming of the flash memory at room temperature is recommended.

Note 11: No commands can be executed until the erase operation has completed. During erase operations, all commands sent to

the device are ignored.

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