AD8451 datasheet(14/33 Pages) AD

14 / 33 page

Data Sheet

AD8451

CC AND CV LOOP FILTER AMPLIFIERS, AND VSET BUFFER

500

–500

–400

–300

–200

–100

100

200

300

400

–15

–10

–5

INPUT COMMON-MODE VOLTAGE (V)

AVCC = +25V

AVEE = –5V

AVCC = +15V

AVEE = –15V

Figure 23. Input Offset Voltage vs. Input Common-Mode Voltage

for Two Supply Voltage Combinations

100

–15

–10

–5

INPUT COMMON-MODE VOLTAGE (V)

AVCC = +25V

AVEE = –5V

AVCC = +15V

AVEE = –15V

Figure 24. Input Bias Current vs. Input Common-Mode Voltage

for Two Supply Voltage Combinations

100

–40

–20

–40 –30 –20 –10

TEMPERATURE (°C)

–IB

+IB

Figure 25. Input Bias Current vs. Temperature

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

–40 –30 –20 –10

TEMPERATURE (°C)

CONSTANT CURRENT LOOP AND

CONSTANT VOLTAGE LOOP AMPLIFIERS

AVCC = +25V

AVEE = –5V

AVCC = +15V

AVEE = –15V

Figure 26. Output Source Current vs. Temperature

for Two Supply Voltage Combinations

120

–40

–20

100

–45.0

–225.0

–202.5

–180.0

–157.5

–135.0

–112.5

–90.0

–67.5

100

10k

100k

10M

FREQUENCY (Hz)

PHASE

GAIN

Figure 27. Open-Loop Gain and Phase vs. Frequency

160

100

120

140

100

10k

100k

FREQUENCY (Hz)

CONSTANT CURRENT LOOP

AND

CONSTANT VOLTAGE

LOOP FILTER

AMPLIFIERS

Figure 28. CMRR vs. Frequency

Rev. 0 | Page 13 of 32

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