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OPA818

SBOS940A – MAY 2019 – REVISED MARCH 2020

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Copyright © 2019–2020, Texas Instruments Incorporated

(1)

Input offset voltage drift and input bias current drift are average values calculated by taking data at the end-points, computing the

difference, and dividing by the temperature range.

(2)

Current is considered positive out of the pin. IOS = IB+ – IB–.

7.5 Electrical Characteristics: VS = ±5 V

At TA ≈ 25°C, VS+ = +5 V, VS– = –5 V, closed-loop gain (G) = 7 V/V, common-mode voltage (VCM) = mid-supply, RF = 301 Ω,

RL = 100 Ω to mid-supply (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AC PERFORMANCE

SSBW

Small-signal bandwidth

VO = 100 mVPP

765

MHz

G = 10, VO = 100 mVPP

430

Frequency response peaking

1.4

dB

LSBW

Large-signal bandwidth

VO = 2 VPP

400

MHz

GBWP

Gain-bandwidth product

G = 101 V/V, VO = 100 mVPP, RF = 3.01 kΩ

2700

MHz

Bandwdith for 0.1dB flatness

VO = 100 mVPP

100

MHz

SR

Slew rate (20%-80%)

VO = 4-V step, rising and falling

1400

V/µs

VO = 4-V step, rising and falling, G = 10

1340

V/µs

tr/tf

Rise and fall time (10%-90%)

VO = 100-mV step

0.52

ns

tS

Settling time to 0.1%

VO = 2-V step

5.7

ns

Overshoot and undershoot

VO = 2-V step

7%

Overdrive recovery time

VO = (VS– – 1 V) to (VS+ + 1 V)

25

ns

HD2

Second-order harmonic

distortion

VO = 2 VPP

f = 1 MHz

–84

dBc

f = 10 MHz

–64

f = 50 MHz

–52

f = 10 MHz, RL = 1 kΩ

–71

HD3

Third-order harmonic distortion

VO = 2 VPP

f = 1 MHz

–106

dBc

f = 10 MHz

–99

f = 50 MHz

–74

f = 10 MHz, RL = 1 kΩ

–82

en

Input voltage noise

f

≥ 150 kHz

2.2

nV/

√Hz

1/f corner

15

kHz

in

Input current noise

f = 10 kHz

3

fA/

√Hz

f = 1 MHz

145

fA/

√Hz

ZCL

Closed-loop output impedance

f = 10 MHz

0.2

Ω

DC PERFORMANCE

AOL

Open-loop voltage gain

f = DC, VO = ±2 V

85

92

dB

VOS

Input offset voltage

±0.35

±1.25

mV

TA = –40°C to +85°C

±1.8

Input offset voltage drift(1)

TA = –40°C to +85°C

±3

±20

µV/°C

IB

Input bias current(2)

±4

±25

pA

TA = –40°C to +85°C

700

IOS

Input offset current(2)

±1

±25

pA

CMRR

Common-mode rejection ratio

f = DC, VCM = ±0.5 V

73

90

dB

f = DC, VCM = ±0.5 V, TA = –40°C to +85°C

70

dB

Internal feedback trace

resistance

Device turned OFF, OUT to FB pin

resistance

0.8

1.2

1.7

Ω