INA849_V02 datasheet(5/36 Pages) TI

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7.4 Thermal Information

THERMAL METRIC(1)

INA849

UNIT

D (SOIC)

DGK (VSSOP)

8 PINS

RθJA

Junction-to-ambient thermal resistance

119.6

168.7

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

66.3

61.4

°C/W

RθJB

Junction-to-board thermal resistance

61.9

90.0

°C/W

ψJT

Junction-to-top characterization parameter

20.5

8.4

°C/W

ψJB

Junction-to-board characterization parameter

61.4

88.4

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

N/A

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

7.5 Electrical Characteristics

at TA = 25°C, VS = ±15 V, RL = 10 kΩ, connected to ground, VREF = 0 V, VCM = 0 V, and G = 1 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT

VOSI

Input stage offset voltage(1) (3)

µV

TA = –40°C to +125°C(2)

Input stage offset voltage drift

TA = –40°C to +125°C

0.1

0.4

µV/°C

VOSO

Output stage offset voltage(1) (3)

500

µV

TA = –40°C to +125°C(2)

2000

Output stage offset voltage drift

TA = –40°C to +125°C(2)

µV/°C

PSRR

Power-supply rejection ratio

G = 1, RTI

106

120

G = 10, RTI

114

120

G = 100, RTI

121

126

G = 1000, RTI

123

128

Zin

Input impedance

1 || 7

GΩ || pF

RFI filter, –3-dB frequency

220

MHz

VCM

Operating input range(4)

(–VS) + 2.5

(+VS) – 2.5

VS = ±4 V to ±18 V

See Figure 8-2 and Figure 8-3

CMRR

Common-mode rejection ratio

At dc to 60 Hz, RTI,

VCM = (V–) + 2.5 V to (V+) – 2.5 V,

G = 1

110

At dc to 60 Hz, RTI,

VCM = (V–) + 2.5 V to (V+) – 2.5 V,

G = 10

112

125

At dc to 60 Hz, RTI,

VCM = (V–) + 2.5 V to (V+) – 2.5 V,

G = 100

120

127

At dc to 60 Hz, RTI,

VCM = (V–) + 2.5 V to (V+) – 2.5 V,

G = 1000

120

127

BIAS CURRENT

Input bias current

VCM = VS / 2

Input bias current drift

TA = –40°C to +125°C

pA/°C

IOS

Input offset current

VCM = VS / 2

Input offset current drift

TA = –40°C to +125°C

pA/°C

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INA849

SBOS945B – NOVEMBER 2020 – REVISED APRIL 2021

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