OPA325IDBVR datasheet(7/42 Pages) TI1

7 / 42 page

OPA325, OPA2325, OPA4325

www.ti.com

SBOS637D – OCTOBER 2016 – REVISED JUNE 2019

Product Folder Links: OPA325 OPA2325 OPA4325

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(1)

Third-order filter; bandwidth = 80 kHz at –3 dB.

6.7 Electrical Characteristics: VS = 2.2 V to 5.5 V or ±1.1 V to ±2.75 V

at TA = 25°C, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

VOS

Input offset voltage

150

µV

dVOS/dT

Input offset voltage drift

VS = 5.5 V, TA = –40°C to +125°C

7.5

µV/°C

PSRR

Power-supply rejection ratio

VS = 2.2 V to +5.5 V

µV/V

VS = 2.2 V to 5.5 V, TA = –40°C to +125°C

Channel separation

At 1 kHz

130

INPUT VOLTAGE

VCM

Common-mode voltage range

(V–) – 0.1

(V+) + 0.1

CMRR

Common-mode rejection ratio

VS = 5.5 V, (V–) – 0.1 V < VCM < (V+) + 0.1 V

100

114

TA = –40°C to +125°C

INPUT BIAS CURRENT

Input bias current

±0.2

±10

TA = –40°C to +85°C

±500

TA = –40°C to +125°C

±10

IOS

Input offset current

±0.2

±10

TA = –40°C to +85°C

±500

TA = –40°C to +125°C

±10

NOISE

Input voltage noise

f = 0.1 Hz to 10 Hz

2.8

µVPP

Input voltage noise density

f = 1 kHz

nV/

√Hz

f = 10 kHz

Input current noise density

f = 1 kHz

1.3

fA/

√Hz

INPUT CAPACITANCE

Differential

Common-mode

OPEN-LOOP GAIN

AOL

Open-loop voltage gain

0.1 V < VO < (V+) – 0.1 V, RL = 10 kΩ

105

130

0.1 V < VO < (V+) – 0.1 V, RL = 10 kΩ,

TA = –40°C to +125°C

128

0.2 V < VO < (V+) – 0.2 V, RL = 2 kΩ

100

110

Phase margin

G = 1 V/V, VS = 5 V, CL = 15 pF

Degrees

FREQUENCY RESPONSE (VS = 5.0 V, CL = 50 pF)

GBP

Gain bandwidth product

Unity gain

MHz

Slew rate

G = +1

V/μs

Settling time

To 0.1%, 2-V step, G = +1

0.6

µs

To 0.01%, 2-V step, G = +1

Overload recovery time

VIN × G > VS

200

THD+N

Total harmonic distortion + noise(1)

VO = 4 VPP, G = +1, f = 10 kHz, RL = 10 kΩ

0.0005%

VO = 2 VPP, G = +1, f = 10 kHz, RL = 600 Ω

0.005%

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