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OPA320-Q1, OPA2320-Q1

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SLOS884B – SEPTEMBER 2014 – REVISED DECEMBER 2018

Product Folder Links: OPA320-Q1 OPA2320-Q1

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Copyright © 2014–2018, Texas Instruments Incorporated

(1)

Based on simulation.

(2)

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

6.5

Electrical Characteristics:

VS = 1.8 to 5.5 V or ±0.9 V to ±2.75 V; at TA = 25°C, R(L) = 10 kΩ connected to VS / 2, V(CM) = VS / 2, VO = VS / 2 (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

VIO

Input offset voltage

40

150

µV

Input offset voltage versus

temperature

VS = 5.5 V, TA = –40°C to +125°C

1.5

5

µV/°C

Input offset voltage versus power

supply

VS = 1.8 to 5.5 V

5

20

µV/V

VS = 1.8 to 5.5 V, TA = –40°C to +125°C

15

Input offset-voltage channel

separation

At 1 kHz

130

dB

INPUT VOLTAGE

V(CM)

Common-mode voltage range

V(V–) – 0.1

V(V+) + 0.1

V

CMRR

Common-mode rejection ratio

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

100

114

dB

Common-mode rejection ratio,

over temperature

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

TA = –40°C to 125°C

96

dB

INPUT BIAS CURRENT

IIB

Input bias current

±0.2

±0.9

pA

Input bias current, over

temperature

TA = –40°C to 85°C

±50

pA

TA = –40°C to 125°C

±400

IIO

Input offset current

±0.2

±0.9

pA

Input offset current, over

temperature

TA = –40°C to 85°C

±50

pA

TA = –40°C to 125°C

±400

NOISE

VI(n)

Input voltage noise

f = 0.1 to 10 Hz

2.8

µVPP

Input voltage noise density

f = 1 kHz

8.5

nV/

√Hz

f = 10 kHz

7

Input current noise density

f = 1 kHz

0.6

fA/

√Hz

INPUT CAPACITANCE

Differential

5

pF

Common-mode

4

pF

OPEN-LOOP GAIN

A(OL)

Open-loop voltage gain

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

114

132

dB

0.1 V < VO < V(V+) – 0.1 V, R(L) = 10 kΩ, TA = –40°C to 125°C

100

130

0.2 V < VO < V(V+) – 0.2 V, R(L) = 2 kΩ

108

123

0.2 V < VO < V(V+) – 0.2 V, R(L) = 2 kΩ, TA = –40°C to 125°C

96

130

PM

Phase margin

VS = 5 V, C(L) = 50 pF

47

°

FREQUENCY RESPONSE (VS = 5 V, C(L) = 50 pF)

GBP

Gain bandwidth product

Unity gain

20

MHz

SR

Slew rate

G = 1

10

V/µs

ts

Settling time

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

0.25

µs

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

0.32

To 0.0015%, 2-V step, G = 1(1)

0.5

Overload recovery time

VI × G > VS

100

ns

THD+N

Total harmonic distortion +

noise(2)

VO = 4 VPP, G = 1, f = 10 kHz, R(L) = 10 kΩ

0.0005%

VO = 4 VPP, G = 1, f = 10 kHz, R(L) = 600 kΩ

0.0011%