AMC7820

SBAS231B

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12

TYPICAL CHARACTERISTICS: Operational Amplifiers (Cont.)

At TA = +25°C, +AVDD, BVDD = +5.0V, VREF = Internal +2.5V, unless otherwise noted.

INPUT VOLTAGE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

Frequency (Hz)

1k

100

10

1

0.1

1k

100

10

1

0.1

1

10

100

1k

10k

100k

1M

Voltage Noise

Current Noise

OP AMP OUTPUT VOLTAGE vs INPUT VOLTAGE

Input Voltage (V)

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

0.01

0.005

0

0

0.005

1.5

2

3

3.5

4

4.5

5

0.01

2.5

Common-

Mode

Input Range

is Exceeded

V

OUTPUT Clamps at +5mV

For 0.01V < V

INPUT < 3.8V

CMRR > 74dB

Input

Output

G= +1

OPEN-LOOP GAIN/PHASE vs FREQUENCY

Frequency (Hz)

160

140

120

100

80

60

40

20

0

–20

1

10

100

10k

1k

100k

10M

1M

G

φ

0

–45

–90

–135

–180

A

OL, CMRR, PSRR vs TEMPERATURE

140

130

120

110

100

90

80

130

120

110

100

90

80

70

PSRR

CMRR

Temperature (

°C)

–50

–25

0

25

50

75

100

A

OL

POWER-SUPPLY REJECTION RATIO AND

COMMON-MODE REJECTION RATIO vs FREQUENCY

Frequency (Hz)

100

90

80

70

60

50

40

30

20

10

1

10

100

1k

10k

100k

1M

10M

+PSRR

CMRR

SMALL-SIGNAL STEP RESPONSE

G = 1, C

L = 100pF

Time (1

µs/div)