AD8691 datasheet(3/12 Pages) AD | Low Cost, Low Noise, CMOS Rail-to-Rail Output Operational Amplifiers

3 page

AD8691/AD8692/AD8694

Rev. 0 | Page 3 of 12

ELECTRICAL CHARACTERISTICS

VS = 2.7 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Offset Voltage

VOS

VCM = −0.3 V to +1.6 V

0.4

2.0

VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C

3.0

Input Bias Current

0.2

−40°C < TA < +85°C

−40°C < TA < +125°C

260

Input Offset Current

IOS

0.1

0.5

−40°C < TA < +85°C

−40°C < TA < +125°C

Input Voltage Range

−0.3

+1.6

Common-Mode Rejection Ratio

CMRR

VCM = −0.3 V to +1.6 V

VCM = −0.1 V to +1.6 V; −40°C < TA < +125°C

Large Signal Voltage Gain

AVO

RL = 2 kΩ, VO = 0.5 V to 2.2 V

250

V/mV

AD8694

RL = 2 kΩ, VO = 0.5 V to 2.2 V

V/mV

Offset Voltage Drift

∆VOS/∆T

AD8691

µV/°C

AD8692/AD8694

1.3

µV/°C

INPUT CAPACITANCE

Common-Mode Input Capacitance

CCM

Differential Input Capacitance

CDM

2.5

OUTPUT CHARACTERISTICS

Output Voltage High

VOH

IL = 1 mA

2.64

2.66

−40°C < TA < +125°C

2.6

Output Voltage Low

VOL

IL = 1 mA

−40°C < TA < +125°C

Short-Circuit Current

ISC

±20

Closed-Loop Output Impedance

ZOUT

f = 1 MHz, AV = 1

Ω

POWER SUPPLY

Power Supply Rejection Ratio

PSRR

VS = 2.7 V to 5.5 V

−40°C < TA < +125°C

Supply Current/Amplifier

ISY

VO = 0 V

0.85

0.95

−40°C < TA < +125°C

1.2

DYNAMIC PERFORMANCE

Slew Rate

RL = 2 kΩ

V/µs

Settling Time

To 0.01%

µs

Gain Bandwidth Product

GBP

MHz

Phase Margin

ØO

Degrees

Total Harmonic Distortion + Noise

THD + N

G = 1, RL = 600

Ω, f = 1 kHz, VO = 250 mV p-p

0.003

NOISE PERFORMANCE

Voltage Noise

en p-p

f = 0.1 Hz to 10 Hz

1.6

3.0

µV p-p

Voltage Noise Density

f = 1 kHz

nV/√Hz

f = 10 kHz

6.5

nV/√Hz

Current Noise Density

f = 1 kHz

0.05

pA/√Hz

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