AN753 datasheet(3/24 Pages) MAXIM

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Low-Cost Precision Sensor

Signal Conditioner

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +5V, VSS = 0, TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Offset TC Ratio

∆VOUT/

∆Offset TC

0.9

1.2

V/V

Step Response and IC

(63% Final Value)

150

µs

Maximum Capacitive Load

1µF

Output Noise

DC to 1kHz (gain = minimum, source

impedance = 5k

Ω VDDF filter)

0.5

mVRMS

BRIDGE DRIVE

Bridge Current

IBDR

RL = 1.7k

Ω

0.1

0.5

Current Mirror Ratio

RISOURCE = internal

A/A

VSPAN Range (Span Code)

TA = TMIN to TMAX

4000

C000

hex

DIGITAL–TO–ANALOG CONVERTERS

DAC Resolution

bits

ODAC Bit Weight

∆VOUT/

∆Code

DAC reference = VDD = +5.0V

µV/bit

OTCDAC Bit Weight

∆VOUT/

∆Code

DAC reference = VBDR = +2.5V

µV/bit

FSODAC Bit Weight

∆VOUT/

∆Code

DAC reference = VDD = +5.0V

µV/bit

FSOTCDAC Bit Weight

∆VOUT/

∆Code

DAC reference = VBDR = +2.5V

µV/bit

COARSE OFFSET DAC

IRODAC Resolution

Including sign

bits

IRODAC Bit Weight

∆VOUT/

∆Code

Input referred, DAC reference =

VDD = +5.0V (Note 6)

mV/bit

FSOTC BUFFER

Minimum Output Voltage Swing

No load

VSS +

0.1

Maximum Output Voltage Swing

No load

VDD - 1.0

Current Drive

VFSOTC = +2.5V

-40

+40

µA

INTERNAL RESISTORS

Current-Source Reference

Resistor

RISRC

Ω

Current-Source Reference

Resistor Temperature Coefficient

∆RISRC

1300

ppm/°C

FSOTC Resistor

RFTC

Ω

FSOTC Resistor Temperature

Coefficient

∆RFTC

1300

ppm/°C

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