OPA838IDBVT datasheet(7/41 Pages) TI1

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OPA838

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SBOS867 – AUGUST 2017

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(1)

Test levels (all values set by characterization and simulation): (A) 100% tested at 25°C, overtemperature limits by characterization and

simulation; (B) Not tested in production, limits set by characterization and simulation; (C) Typical value only for information.

(2)

This slew rate is the average of the rising and falling time estimated from the large-signal bandwidth as: (0.8 × VPEAK / √2) × 2π × f–3dB

where this f–3dB is the typical measured 2-VPP bandwidth at gains of 6 V/V.

(3)

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

points, computing the difference, and dividing by the temperature range.

(4)

Input offset voltage drift, input bias current drift, and input offset current drift typical specifications are mean ± 1σ characterized by the full

temperature range end-point data. Maximum drift specifications are set by the min, max packaged test range on the wafer-level

screened drift. Drift is not specified by the final automated test equipment (ATE) or by QA sample testing.

(5)

Current is considered positive out of the pin.

7.6 Electrical Characteristics: VS = 3 V

at VS+ = 3 V, VS– = 0 V, RF = 1 kΩ, RG = 200 Ω, RL = 2 kΩ, G = 6 V/V, input and output referenced to midsupply, and TA ≈

25°C, (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TEST

LEVEL(1)

AC PERFORMANCE

SSBW

Small-signal bandwidth

VOUT = 20 mVPP, G = 6 (peaking < 4 dB)

MHz

VOUT = 20 mVPP, G = 10, RF = 1.6 kΩ

VOUT = 20 mVPP, G = 100, RF = 16.9 kΩ

GBP

Gain-bandwidth product

VOUT = 20 mVPP, G = 100

240

300

MHz

LSBW

Large-signal bandwidth

VOUT = 2 VPP, G = 6

MHz

Bandwidth for 0.1-dB flatness

VOUT = 2 VPP, G = 6

MHz

Slew rate

From LSBW(2)

250

350

V/µs

Overshoot, undershoot

VOUT = 1-V step, G = 6, input tR = 6 ns

tR, tF

Rise, fall time

VOUT = 1-V step, G = 6, input tR = 6 ns

6.3

Settling time to 0.1%

VOUT = 1-V step, G = 6, input tR = 6 ns

Settling time to 0.01%

VOUT = 1-V step, G = 6, input tR = 6 ns

HD2

Second-order harmonic distortion

f = 100 kHz, VO = 2 VPP, G = 6 (see Figure 74)

–108

dBc

HD3

Third-order harmonic distortion

f = 100 kHz, VO = 2 VPP, G = 6 (see Figure 74)

–125

dBc

Input voltage noise

f > 1 kHz

1.8

nV/

√Hz

Voltage noise 1/f corner frequency

100

Input current noise

f > 100 kHz

1.0

pA/

√Hz

Current noise 1/f corner frequency

kHz

Overdrive recovery time

G = 6, 2x output overdrive, DC-coupled

Closed-loop output impedance

f = 1 MHz, G = 6

0.3

DC PERFORMANCE

AOL

Open-loop voltage gain

VO = ±1 V, RL = 2 kΩ

110

125

Input-referred offset voltage

TA ≈ 25°C

–125

±15

125

µV

TA = 0°C to 70°C

–165

±15

200

TA = –40°C to 85°C

–230

±15

220

TA = –40°C to 125°C

–230

±15

285

Input offset voltage drift(3)

TA = –40°C to 125°C

(4)

–1.6

±0.4

1.6

µV/°C

Input bias current(5)

TA ≈ 25°C

1.5

2.8

µA

TA = 0°C to 70°C

1.5

3.5

TA = –40°C to 85°C

1.5

3.7

TA = –40°C to 125°C

1.5

4.4

Input bias current drift(3)

TA = –40°C to 125°C

4.5

7.8

nA/°C

Input offset current

TA ≈ 25°C

–70

±20

TA = 0°C to 70°C

–83

±20

TA = –40°C to 85°C

–105

±20

100

TA = –40°C to 125°C

–105

±13

120

Input offset current drift(3)

TA = –40°C to 125°C

–500

±20

500

pA/°C

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