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MAX1454

Precision Sensor Signal Conditioner

with Overvoltage Protection

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

BRIDGE DRIVE

Bridge Current

0.1

2.5

mA

Current-Mirror Ratio

AA

CMRATIO[1:0] = 00

4.8

6

7.2

A/A

CMRATIO[1:0] = 01

9.6

12

14.4

CMRATIO[1:0] = 10

14.4

18

21.6

CMRATIO[1:0] = 11

24

30

36

Maximum Bridge Load

Capacitance

Voltage excitation mode (Note 4)

1

nF

FSO DAC Code Range

(Note 4)

0x4000

0xC000

Hex

Output Voltage Range

(Note 4)

0.75

0.75

V

DIGITAL-TO-ANALOG CONVERTERS (DACs)

DAC Resolution

16

Bits

Offset DAC Bit Weight

D

76

F

V/bit

Offset TC DAC Bit Weight

D

38

F

V/bit

FSO DAC Bit Weight

D

76

F

V/bit

FSO TC DAC Bit Weight

D

38

F

V/bit

COARSE-OFFSET DAC

IRO DAC Resolution

Including sign

5

Bits

IRO DAC Bit Weight

D

(Note 9)

3.7

mV/bit

INTERNAL RESISTORS

OUT/DIO Pullup Resistance

100

kI

Current Source Reference

Resistor

10

kI

Current Source Reference

Resistor Temperature

Coefficient

600

ppm/NC

FLASH MEMORY

Endurance

(Notes 4, 10)

10,000

Cycles

Retention

10

Years

Page Erase Time

(Notes 4, 11)

32

ms

Mass Erase Time

(Notes 4, 11)

32

ms