AD8304 datasheet(4/20 Pages) AD

4 / 20 page

REV. A

–4–

AD8304–Typical Performance Characteristics

1.6

1.4

0.8

0.6

0.4

0.2

1.2

1.0

–40 C

+25 C

+85 C

INPUT – A

100p

10m

10n

100n

100

TA = –40 C, +25 C, +85 C

VN = –0.5V

0 C

+70 C

TPC 1. VLOG vs. IPD

INPUT – A

2.0

–2.0

100p

10m

10n

100n

100

1.5

–0.5

–1.0

–1.5

1.0

0.5

+25 C

–40 C

TA = –40 C, +25 C, +85 C

VN = –0.5V

0 C

+70 C

+85 C

TPC 2. Logarithmic Conformance (Linearity) for VLOG

2.0

–2.0

1.5

–0.5

–1.0

–1.5

1.0

0.5

5.5V

5.0V

4.5V

INPUT – A

100p

10m

10n

100n

100

VP = 4.5V, 5.0V, 5.5V

VN = –0.1V

TPC 3. Absolute Deviation from Nominal Speci-

fied Value of VLOG for Several Supply Voltages

0.510

0.508

0.502

0.500

0.506

0.504

+85 C

+25 C

–40 C

INPUT – A

100p

10m

10n

100n

100

TA = –40 C, +25 C, +85 C

TPC 4. VSUM vs. IPD

INPUT – mA

2.8

1.4

0.6

010

2345

789

2.6

1.6

1.2

0.8

2.0

1.8

1.0

2.4

2.2

–40 C

+25 C

+85 C

TA = –40 C, +25 C, +85 C

TPC 5. VPDB vs. IPD

INPUT – A

2.4

0.6

100p

10m

10n

100n

100

2.2

1.6

1.4

1.2

1.0

2.0

1.8

+85 C

+25 C

–40 C

0.8

1.25

–1.00

1.00

0.25

–0.25

–0.50

0.75

0.50

–0.75

TA = –40 C, +25 C, +85 C

VP = 3.0V

TPC 6. Logarithmic Conformance (Linearity) for a

3 V Single Supply (See Figure 6)

(VP = 5 V, VN = 0 V, TA = 25 C, unless otherwise noted.)

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