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ADL5310
(Rev.:RevB)

120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter

Analog Devices 

ADL5310

Data Sheet

TYPICAL PERFORMANCE CHARACTERISTICS

VP = 5 V, VN = 0 V, RREF = 665 kΩ, TA = 25°C, unless otherwise noted.

1.6

TA = –40°C, 0°C, +25°C, +70°C, +85°C

VIN = 0V

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1n

10n 100n

1µ

10µ 100µ 1m 10m

IINP (A)

Figure 3. VLOG vs. IINP for Multiple Temperatures

1.8

TA = –40°C, 0°C, +25°C, +70°C, +85°C

1.6

VIN = 0V

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1n

10n 100n

1µ

10µ 100µ 1m 10m

IREF (A)

Figure 4. VLOG vs. IREF for Multiple Temperatures (IINP = 3 µA)

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1n

3µA

300nA

30nA

3nA

3mA

300µA

30µA

10n 100n

1µ

10µ 100µ

1m

10m

IINP (A)

Figure 5. VLOG vs. IINP for Multiple Values of IREF,

Decade Steps from 3 nA to 3 mA

2.0

1.5

1.0

+85°C

+25°C

+70°C

0.5

0

–0.5

0°C

–40°C

–1.0

–1.5

–2.0

1n

10n 100n

1µ

10µ 100µ 1m 10m

IINP (A)

Figure 6. Law Conformance Error vs. IINP for Multiple Temperatures,

Normalized to 25°C

2.0

1.5

1.0

+70°C

0.5

+85°C

0

+25°C

–0.5

–40°C 0°C

–1.0

–1.5

–2.0

1n

10n 100n

1µ

10µ 100µ 1m 10m

IREF (A)

Figure 7. Law Conformance Error vs. IREF for Multiple Temperatures,

Normalized to 25°C (IINP = 3 µA)

1.0

0.8

0.6

0.4

3µA

0.2

0

30µA

3mA

300µA

–0.2 300nA

–0.4

–0.6

–0.8

–1.0

1n

10n

100n

3nA 30nA

1µ

10µ 100µ 1m

IINP (A)

10m

Figure 8. Law Conformance Error vs. IINP for Multiple Values of IREF,

Decade Steps from 3 nA to 3 mA

Rev. B | Page 6 of 20

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