LOG200 datasheet(9/42 Pages) TI

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5.6 Typical Characteristics (continued)

at TA = 25°C, VS = 5V (±2.5V) to 10V (±5V), OUTA RL = 10kΩ connected to VS / 2, OUTB RL = 2kΩ connected to VS / 2,

VCM = VREFA = VS / 2, VREFGND = VS–, II1 = 1µA, and II2 = 1µA (unless otherwise noted)

I1 Input Current (µA)

0.0001 0.001

0.01

0.1

100

1000 10000

-1.25

-1

-0.75

-0.5

-0.25

0.25

0.5

0.75

1.25

TA = –40 C

TA = –25 C

TA = –5 C

TA = 25 C

TA = 50 C

TA = 75 C

TA = 85 C

Figure 5-7. Output Voltage vs I1 Current

I2 Input Current (µA)

0.0001

0.001

0.01

0.1

100

1000

-1

-0.75

-0.5

-0.25

0.25

0.5

0.75

1.25

TA = –40 C

TA = –25 C

TA = –5 C

TA = 25 C

TA = 50 C

TA = 75 C

TA = 85 C

Figure 5-8. Output Voltage vs I2 Current

I1 Input Current (µA)

0.0001 0.001

0.01

0.1

100

1000 10000

-2.5

-2

-1.5

-1

-0.5

0.5

1.5

2.5

II2 = 100pA

II2 = 1nA

II2 = 10nA

II2 = 100nA

II2 = 1 A

II2 = 10 A

II2 = 100 A

II2 = 1mA

Figure 5-9. Output Voltage vs Input Currents

I1 Input Current (µA)

0.0001 0.001

0.01

0.1

100

1000 10000

-5

TA = –40 C

TA = –25 C

TA = –5 C

TA = 25 C

TA = 50 C

TA = 75 C

TA = 85 C

Includes log conformity error

Figure 5-10. Scaling Factor Error vs I1 Current

I1 Input Current (µA)

0.0001 0.001

0.01

0.1

100

1000 10000

-50

-40

-30

-20

-10

TA = 85°C

TA = 25°C

Without calibration for scaling factor error or VOS

Figure 5-11. Average Total Error vs I1 Current

I1 Input Current (µA)

0.0001 0.001

0.01

0.1

100

1000 10000

-3

TA = –40°C

TA = 25°C

Without calibration for scaling factor error or VOS

Figure 5-12. Average Total Error vs I1 Current

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LOG200

SBOSA28A – AUGUST 2023 – REVISED DECEMBER 2024

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