Chopper-Stabilized Op Amps

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5

0

1

2

3

-50

25

50

-25

0

75

100

125

SUPPLY CURRENT vs.

AMBIENT TEMPERATURE

AMBIENT TEMPERATURE (°C)

0

2

1

4

3

5

6

7

8

02

3

1

45678

COMMON-MODE INPUT VOLTAGE RANGE

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

POSITIVE LIMIT

NEGATIVE LIMIT

0

-2

-6

-4

-8

-10

10

100

1k

10k

INPUT OFFSET VOLTAGE

vs. CHOPPING FREQUENCY

CHOPPING FREQUENCY (CLOCK OUT) (Hz)

3

1

2

-1

0

-2

-3

48

10

6

121416

INPUT OFFSET VOLTAGE CHANGE

vs. SUPPLY VOLTAGE

TOTAL SUPPLY VOLTAGE (V)

0

1

3

2

4

5

10

100

1k

10k

10Hzp-p NOISE VOLTAGE

vs. CHOPPING FREQUENCY

CHOPPING FREQUENCY (CLOCK-OUT) (Hz)

20

60

40

100

80

140

120

160

0.01

1

10

0.1

100

1k

10k

100k

OPEN-LOOP GAIN AND PHASE SHIFT

vs. FREQUENCY

ICL7650toac09

FREQUENCY (Hz)

110

130

70

90

50

Ω

µF

20

60

40

100

80

140

120

160

0.01

1

10

0.1

100

1k

10k

100k

OPEN-LOOP GAIN AND PHASE SHIFT

vs. FREQUENCY

ICL7650toac10

FREQUENCY (Hz)

110

130

70

90

50

Ω

µF

-3

-2

-1

0

1

2

3

-1.0

0

-0.5

0.5

1.0

1.5

2.0

2.5

3.0

VOLTAGE FOLLOWER LARGE-SIGNAL

PULSE RESPONSE

TIME (

µs)

CLOCK OUT HIGH

CLOCK OUT LOW

-3

-2

-1

0

1

2

3

-1.0

0

-0.5

0.5

1.0

1.5

2.0

2.5

3.0

VOLTAGE FOLLOWER LARGE-SIGNAL

PULSE RESPONSE

TIME (

µs)

CLOCK OUT HIGH

CLOCK OUT LOW

Typical Operating Characteristics (continued)