AD8305ACPZ Просмотр технического описания (PDF) - Analog Devices

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AD8305ACPZ

100 dB Range (10 nA to 1 mA) Logarithmic Converter

Analog Devices 

Data Sheet

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

1n

MEAN + 3σ

MEAN – 3σ

TA = 25°C

10n 100n

1µ

10µ 100µ 1m 10m

IPD (A)

Figure 21. Law Conformance Error Distribution (3σ to Either Side of Mean)

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

1n

MEAN + 3σ @ 70°C

TA = 0°C, 70°C

MEAN ± 3σ @ 0°C

MEAN – 3σ @ 70°C

10n 100n

1µ

10µ 100µ 1m 10m

IPD (A)

Figure 22. Law Conformance Error Distribution (3σ to Either Side of Mean)

4

TA = –40°C, +85°C

3

MEAN + 3σ @ –40°C

2

1

MEAN ± 3σ @ +85°C

0

–1

–2

–3

MEAN – 3σ @ –40°C

–4

1n

10n 100n

1µ

10µ 100µ

1m

10m

IPD (A)

Figure 23. Law Conformance Error Distribution (3σ to Either Side of Mean)

AD8305

20

15

10

5

MEAN + 3σ

0

–5

–10

MEAN – 3σ

–15

–20

–25

–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

Figure 24. VREF Drift vs. Temperature (3σ to Either Side of Mean)

20

15

10

5

MEAN + 3σ

0

–5

MEAN – 3σ

–10

–15

–20

–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

Figure 25. VREF − VIREF Drift vs. Temperature (3σ to Either Side of Mean)

5

4

3

2

1

MEAN + 3σ

0

–1

–2

MEAN – 3σ

–3

–4

–5

–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

Figure 26. VINPT Drift vs. Temperature (3σ to Either Side of Mean)

Rev. C | Page 9 of 24

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