Note 1: Excludes sensor or load current.

Note 2: This is the maximum allowable sensor offset.

Note 3: This is the sensor’s sensitivity normalized to its drive voltage, assuming a desired full-span output of 4V and a bridge volt-

age of 2.5V.

Note 6: Programming of the EEPROM at temperatures below +70°C is recommended.

Note 7: For operation above +70°C, limit erase/write cycle to 100.

Note 8: All erase commands require 7.1ms minimum time.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Current Drive

-1

+1

mA

Common-Mode Rejection Ratio

CMRR

70

dB

Input Offset Voltage

buffer (Note 5)

±1

±20

mV

Unity-Gain Bandwidth

2

MHz

TEMPERATURE-TO-DIGITAL CONVERTER

Temperature ADC Resolution

8

Bits

Offset

±3

Bits

Gain

1.45

°C/Bit

Nonlinearity

±1

LSB

Lowest Digital Output

00

Hex

Highest Digital Output

AF

Hex

EEPROM

Maximum Erase/Write Cycles

(Notes 6, 7)

10k

Cycles

Erase Time

(Note 8)

7.1

ms

5.0

2.5

0

-2.5

-5.0

AMPLIFIER GAIN NONLINEARITY

INPUT VOLTAGE [INP - INM] (mV)

-50

-30

-10

10

30

50

ODAC = +6000HEX

OTCDAC = 0

FSODAC = 6000HEX

FSOTCDAC = 8000HEX

IRO = 2HEX

PGA = 0

OUTPUT NOISE

400µs/div

OUT

10mV/div

INP - INM SHORTED TOGETHER

PGA = 0HEX

OFFSET DAC DNL

DAC CODE

0

30k 40k

10k 20k

50k 60k 70k

-2.5

-1.0

-1.5

-2.0

-0.5

0

0.5

1.0

1.5

2.0

2.5

MAX1455

Low-Cost Precision Sensor Signal Conditioner

www.maximintegrated.com

Maxim Integrated │ 4

Electrical Characteristics (continued)

Typical Operating Characteristics