AD820 datasheet(3/24 Pages) AD

3 / 24 page

AD820

Rev. E | Page 3 of 24

SPECIFICATIONS

VS = 0 V, 5 V @ TA = 25°C, VCM = 0 V, VOUT = 0.2 V, unless otherwise noted.

Table 1.

AD820A

AD820B

Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

Unit

DC PERFORMANCE

Initial Offset

0.1

0.8

0.1

0.4

Maximum Offset over Temperature

0.5

1.2

0.5

0.9

Offset Drift

μV/°C

Input Bias Current

VCM = 0 V to 4 V

at TMAX

0.5

2.5

Input Offset Current

at TMAX

0.5

Open-Loop Gain

VOUT = 0.2 V to 4 V

TMIN to TMAX

RL = 100 kΩ

400

1000

500

1000

V/mV

400

V/mV

TMIN to TMAX

RL = 10 kΩ

150

V/mV

TMIN to TMAX

RL = 1 kΩ

V/mV

NOISE/HARMONIC PERFORMANCE

Input Voltage Noise

0.1 Hz to 10 Hz

μV p-p

f = 10 Hz

nV/√Hz

f = 100 Hz

nV/√Hz

f = 1 kHz

nV/√Hz

f = 10 kHz

nV/√Hz

Input Current Noise

0.1 Hz to 10 Hz

fA p-p

f = 1 kHz

0.8

fA/√Hz

Harmonic Distortion

RL = 10 kΩ to 2.5 V

f = 10 kHz

VOUT = 0.25 V to 4.75 V

−93

DYNAMIC PERFORMANCE

Unity Gain Frequency

1.8

MHz

Full Power Response

VOUT p-p = 4.5 V

210

kHz

Slew Rate

V/μs

Settling Time

to 0.1%

VOUT = 0.2 V to 4.5 V

1.4

μs

to 0.01%

1.8

μs

INPUT CHARACTERISTICS

Common-Mode Voltage Range1

−0.2

–0.2

TMIN to TMAX

−0.2

–0.2

CMRR

VCM = 0 V to 2 V

TMIN to TMAX

Input Impedance

Differential

1013||0.5

Ω||pF

Common Mode

1013||2.8

Ω||pF

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