AD7982 datasheet(5/9 Pages) AD

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Enhanced Product

ADA4805-2-EP

Rev. 0 | Page 5 of 9

3 V SUPPLY

VS = 3 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to midsupply; unless otherwise noted. All specifications are

per amplifier.

Table 4.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

DYNAMIC PERFORMANCE

−3 dB Bandwidth

G = +1, VOUT = 0.02 V p-p

MHz

G = +1, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V

MHz

Bandwidth for 0.1 dB Flatness

G = +1, VOUT = 0.02 V p-p

MHz

Slew Rate

G = +1, VOUT = 1 V step, +VS = 2 V, −VS = −1 V

V/µs

Settling Time to 0.1%

G = +1, VOUT = 1 V step

NOISE/DISTORTION PERFORMANCE

Harmonic Distortion, HD2/HD31

fC = 20 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V

−123/−143

dBc

fC = 100 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V

−107/−133

dBc

Input Voltage Noise

f = 100 kHz

6.3

nV/√Hz

Input Voltage Noise 1/f Corner

0.1 Hz to 10 Hz Voltage Noise

nV rms

Input Current Noise

f = 100 kHz

0.8

pA/√Hz

DC PERFORMANCE

Input Offset Voltage

125

µV

Input Offset Voltage Drift2

TMIN to TMAX

0.4

2.7

µV/°C

Input Bias Current

440

690

Input Offset Current

0.5

Open-Loop Gain

VOUT = 1.1 V to 1.9 V

100

107

INPUT CHARACTERISTICS

Input Resistance

Common Mode

MΩ

Differential Mode

260

kΩ

Input Capacitance

Input Common-Mode Voltage Range

−0.1

Common-Mode Rejection Ratio

VIN, CM = 0.5 V to 2 V

117

OUTPUT CHARACTERISTICS

Output Overdrive Recovery Time

(Rising/Falling Edge)

VIN = −1 V to +4 V, G = +2

135/175

Output Voltage Swing

RL = 2 kΩ

0.02

2.98

Short-Circuit Current

Sinking/sourcing

65/47

Linear Output Current

<1% THD at 100 kHz, VOUT = 1 V p-p

±40

Capacitive Load Drive

30% overshoot

POWER SUPPLY

Operating Range

2.7

Quiescent Current per Amplifier

470

495

µA

Power Supply Rejection Ratio

Positive

+VS = 1.5 V to 3.5 V, −VS = −1.5 V

119

Negative

+VS = 1.5 V, −VS = −1.5 V to −3.5 V

125

fC is the fundamental frequency.

Guaranteed, but not tested.

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