MAX1459CAP datasheet(2/24 Pages) MAXIM

2 / 24 page

2-Wire, 4–20mA

Smart Signal Conditioner

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ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage, VDD to VSS......................................-0.3V to +6V

All Other Pins ...................................(VSS - 0.3V) to (VDD + 0.3V)

Short-Circuit Duration, FSOTC, OUT, BDRIVE ...........Continuous

Continuous Power Dissipation (TA = +70°C)

20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW

Operating Temperature Ranges

MAX1459CAP ......................................................0°C to +70°C

MAX1459AAP .................................................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

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

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Amplifier Gain Nonlinearity

0.01

%VDD

Input-Referred Offset Tempco

±0.5

µV/°C

Input Impedance

RIN

Ω

Output Step Response

Common-Mode Rejection Ratio

CMRR

Input-Referred Adjustable Offset

Range

±150

Supply Voltage

VDD

4.5

5.0

5.5

Supply Current

IDD

2.0

2.5

Input-Referred Adjustable Full-

Span Output (FSO) Range

+1 to +40

mV/V

Differential Signal Gain Range

+41 to +230

V/V

Minimum Differential Signal Gain

+36

+41

+44

V/V

Differential Signal Gain Tempco

±50

ppm/°C

Output Current Range

-0.45

0.45

(sink)

(source)

Output Noise

500

µVRMS

CONDITIONS

(Note 5)

(Notes 2, 3)

63% of final value

Selectable in eight steps

TA = TMIN to TMAX

From VSS to VDD

At minimum gain (Note 4)

TA = TMIN to TMAX

VOUT = (VSS + 0.25V) to (VDD - 0.25V)

DC to 10Hz (gain = 41,

source impedance = 5k

Ω)

RNBIAS = 402k

Ω, VDD = 5.0V (Note 1)

Output Voltage Swing

VSS + 0.05

VDD - 0.05

No load

VSS + 0.25

VDD - 0.25

10k

Ω load

GENERAL CHARACTERISTICS

ANALOG INPUT (PGA)

ANALOG OUTPUT (PGA)

Bridge Current Range

IBDRIVE

0.1

0.5

2.0

Bridge Voltage Swing

VBDRIVE

VSS + 1.3

VDD - 1.3

IBDRIVE = 2mA

Reference Input Voltage Range

(ISRC)

VISRC

VSS + 1.3

VDD - 1.3

CURRENT SOURCE

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