8

ISO224

SBAS738A – JUNE 2018 – REVISED OCTOBER 2018

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Copyright © 2018, Texas Instruments Incorporated

Electrical Characteristics (continued)

minimum and maximum specifications apply from TA = –55°C to +125°C, VDD1 = 4.5 V to 18 V, VDD2 = 4.5 V to 5.5 V, VIN =

–12 V to 12 V, and RLOAD = 10 kΩ; typical specifications are at TA = 25°C, and VDD1 = VDD2 = 5 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(2)

This parameter is output referred.

(3)

Use series resistor to decouple higher capacilive load.

ANALOG OUTPUTS

Nominal gain

(VOUTP – VOUTN) / VIN

1/3

V/V

EG

Gain error(1)

Initial, at TA = 25°C, ISO224B

–0.3%

±0.05%

0.3%

Initial, at TA = 25°C, ISO224A

–1%

0.4%

1%

TCEG

Gain error drift(1)

ISO224B

–35

±10

35

ppm/°C

ISO224A

–60

±20

60

Nonlinearity

ISO224B

–0.01%

±0.003%

0.01%

ISO224A

–0.02%

±0.003%

0.02%

Nonlinearity drift

±0.1

ppm/°C

THD

Total harmonic distortion

fIN = 10 kHz

–84

dB

Output noise

IN = GND1, fIN = 0 Hz, BW = 10 kHz

300

µVRMS

IN = GND1, fIN = 0 Hz, BW = 100 kHz

360

PSRR

Power-supply rejection

ratio(2)

vs VDD1, at DC

–107

dB

vs VDD1, 100-mV and 10-kHz ripple

–101

vs VDD2, at DC

–71

vs VDD2, 100-mV and 10-kHz ripple

–56

VOUT

Output voltage

OUTP or OUTN to GND2

GND2 + 0.2

VDD2 – 0.2

V

VCMout

Common-mode output

voltage

(VOUTP + VOUTN) / 2

0.48 × VDD2

VDD2 / 2

0.52 × VDD2

V

VFAILSAFE Failsafe output voltage

VDD1 missing, OUTP and OUTN forced to

GND2

GND2 + 0.1

V

ISC

Output short-circuit

current

On OUTP or OUTN to GND2

±18

mA

Overload recovery time

5

µs

ROUT

Output resistance

On OUTP or OUTN to GND2

< 0.5

Ω

CLOAD

Capacitive load drive(3)

On OUTP or OUTN to GND2

100

pF

OUTP to OUTN

50

RLOAD

Resistive load

On OUTP or OUTN

10

kΩ

BW

Small signal output

bandwidth

ISO224B

220

275

kHz

ISO224A

150

185

CMTI

Common-mode transient

immunity

|GND1 – GND2| = 1 kV, ISO224B

55

80

kV/µs

|GND1 – GND2| = 1 kV, ISO224A

15

30

POWER SUPPLY

IDD1

High-side supply current

6.1

7.8

mA

IDD2

Low-side supply current

7.8

9.9

mA