AD820

Rev. H | Page 11 of 24

10M

10k

100

100k

LOAD RESISTANCE (Ω)

1k

10k

100k

1M

VS = ±15V

VS = 0V, +5V

Figure 10. Open-Loop Gain vs. Load Resistance

10M

10k

–60

140

TEMPERATURE (ºC)

100k

1M

–40

–20

0

20

40

60

80

100

120

VS = ±15V

RL = 100kΩ

RL = 10kΩ

VS = 0V, +5V

VS = ±15V

VS = 0V, +5V

VS = ±15V

VS = 0V, +5V

RL = 600Ω

Figure 11. Open-Loop Gain vs. Temperature

300

–300

–16

16

OUTPUT VOLTAGE (V)

200

100

0

–100

–200

–12

–8

–4

0

4

8

12

RL = 100kΩ

RL = 600Ω

RL = 10kΩ

Figure 12. Input Error Voltage vs. Output Voltage for Resistive Loads

40

–40

0

300

OUTPUT VOLTAGE FROM RAILS (mV)

20

0

–20

60

120

180

240

RL = 100kΩ

RL = 20kΩ

RL = 2kΩ

POSITIVE

RAIL

POSITIVE

RAIL

POSITIVE

RAIL

NEGATIVE

RAIL

NEGATIVE

RAIL

NEGATIVE RAIL

Figure 13. Input Error Voltage vs. Output Voltage Within 300 mV of Either

Supply Rail for Various Resistive Loads; VS = ±5 V

1k

1

1

10k

FREQUENCY (Hz)

10

100

1k

10

100

Figure 14. Input Voltage Noise vs. Frequency

–40

–110

100

100k

FREQUENCY (Hz)

1k

10k

–50

–60

–70

–80

–90

–100

RL = 10kΩ

ACL = –1

VS = ±15V; VOUT = 20V p-p

VS = ±5V; VOUT = 9V p-p

VS = 0V, +5V; VOUT = 4.5V p-p

Figure 15. Total Harmonic Distortion vs. Frequency