AD820ARZ-REEL datasheet(5/24 Pages) AD

Part #	AD820ARZ-REEL

Description	Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp

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Manufacturer	AD [Analog Devices]

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AD820

Rev. E | Page 5 of 24

VS = ±5 V @ TA = 25°C, VCM = 0 V, VOUT = 0 V, unless otherwise noted.

Table 2.

AD820A

AD820B

Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

Unit

DC PERFORMANCE

Initial Offset

0.1

0.8

0.3

0.4

mV

Maximum Offset over Temperature

0.5

1.5

0.5

1

mV

Offset Drift

2

μV/°C

Input Bias Current

VCM = –5 V to 4 V

2

25

2

10

pA

at TMAX

0.5

5

0.5

2.5

nA

Input Offset Current

2

20

2

10

pA

at TMAX

0.5

nA

Open-Loop Gain

VOUT = 4 V to –4 V

RL = 100 kΩ

400

1000

400

1000

V/mV

TMIN to TMAX

400

V/mV

RL = 10 kΩ

80

150

80

150

V/mV

TMIN to TMAX

80

V/mV

RL = 1 kΩ

20

30

20

30

V/mV

TMIN to TMAX

10

V/mV

NOISE/HARMONIC PERFORMANCE

Input Voltage Noise

0.1 Hz to 10 Hz

2

μV p-p

f = 10 Hz

25

nV/√Hz

f = 100 Hz

21

nV/√Hz

f = 1 kHz

16

nV/√Hz

f = 10 kHz

13

nV/√Hz

Input Current Noise

0.1 Hz to 10 Hz

18

fA p-p

f = 1 kHz

0.8

fA/√Hz

Harmonic Distortion

RL = 10 kΩ

f = 10 kHz

VOUT = ±4.5 V

−93

dB

DYNAMIC PERFORMANCE

Unity Gain Frequency

1.9

1.8

MHz

Full Power Response

VOUT p-p = 9 V

105

kHz

Slew Rate

3

V/μs

Settling Time

to 0.1%

VOUT = 0 V to ±4.5 V

1.4

μs

to 0.01%

1.8

μs

INPUT CHARACTERISTICS

Common-Mode Voltage Range1

−5.2

+4

−5.2

+4

V

TMIN to TMAX

−5.2

+4

−5.2

+4

V

CMRR

VCM = −5 V to +2 V

66

80

72

80

dB

TMIN to TMAX

66

dB

Input Impedance

Differential

1013||0.5

Ω||pF

Common Mode

1013||2.8

Ω||pF

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