6

INA138-Q1, INA168-Q1

SGLS174J – SEPTEMBER 2003 – REVISED AUGUST 2018

www.ti.com

Product Folder Links: INA138-Q1 INA168-Q1

Submit Documentation Feedback

Copyright © 2003–2018, Texas Instruments Incorporated

(1)

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

report.

6.4 Thermal Information

THERMAL METRIC(1)

INA138-Q1,

INA168-Q1

INA168-Q1

UNIT

PW (TSSOP)

DBV (SOT-23)

8 PINS

5 PINS

RθJA

Junction-to-ambient thermal resistance

179.1

168.3

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

62.6

73.8

°C/W

RθJB

Junction-to-board thermal resistance

107.7

28.1

°C/W

ψJT

Junction-to-top characterization parameter

7.0

2.5

°C/W

ψJB

Junction-to-board characterization parameter

106.0

27.6

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

N/A

N/A

°C/W

(1)

Defined as the amount of input voltage, VSENSE, to drive the output to zero.

6.5 Electrical Characteristics

at TA = −40°C to +125°C, V+ = 5 V, VIN+ = 12 V, and RL = 125 kΩ (unless otherwise noted)

PARAMETER

TEST CONDITIONS

INA138-Q1

INA168-Q1

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

INPUT

Full-scale sense voltage

VSENSE = VIN+ – VIN−

100

500

100

500

mV

Common-mode rejection

VIN+ = 2.7 V to 36 V, VSENSE = 50 mV

100

120

dB

VIN+ = 2.7 V to 60 V, VSENSE = 50 mV

100

120

Offset voltage(1)

±0.2

±2

±0.2

±2

mV

Offset voltage vs temperature

1

1

μV/°C

Offset voltage vs power supply

(V+)

V+ = 2.7 V to 36 V, VSENSE = 50 mV

0.1

10

μV/V

V+ = 2.7 V to 60 V, VSENSE = 50 mV

0.1

10

Input bias current

VIN+ = VIN− = 12 V

10

10

μA

OUTPUT

Transconductance

VSENSE = 10 mV to 150 mV

194

206

194

206

μA/V

Transconductance versus

temperature

VSENSE = 100 mV

10

10

nA/°C

Nonlinearity error

VSENSE = 10 mV to 150 mV

±0.01%

±0.2 %

±0.01%

±0.2 %

Total output error

VSENSE = 100 mV

±0.5%

±3.2%

±0.5%

±3.2%

Output impedance

1 || 5

1 || 5

G

Ω || pF

Voltage output swing to power

supply (V+)

(V+) – 0.8

(V+) – 1.2

(V+) – 0.8

(V+) – 1.2

V

Voltage output swing to

common mode, VCM

VCM – 0.5

VCM – 1.2

VCM – 0.5

VCM – 1.2

V

FREQUENCY RESPONSE

Bandwidth

RL = 5 kΩ

800

800

kHz

RL = 125 kΩ

32

32

Settling time (0.1%)

5-V step, RL = 5 kΩ

1.8

1.8

μs

5-V step, RL = 125 kΩ

30

30

NOISE

Output-current noise density

TA = 25°C

9

9

pA/

√Hz

Total output-current noise

BW = 100 kHz

3

3

nA RMS

POWER SUPPLY

Quiescent current

VSENSE = 0 V, IO = 0 mA

25

60

25

60

μA