100

80

60

40

20

0

–20

40

60

80

100

–

–

–

–

–3

3

Common-Mode Voltage (V)

–2.5 –2 –1.5

0.5

0

–0.5

–1

1

1.5

2

2.5

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

OPA320-Q1, OPA2320-Q1

SLOS884B – SEPTEMBER 2014 – REVISED DECEMBER 2018

OPAx320-Q1 Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO,

CMOS Operational Amplifier

1

1 Features

1

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified with the Following Results:

–

Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C4B

•

Precision with Zero-Crossover Distortion:

–

Low Offset Voltage: 150 µV (max)

–

High CMRR: 114 dB

–

Rail-to-Rail I/O

•

Low Input Bias Current: 0.9 pA (max)

•

Low Noise: 7 nV/

√Hz at 10kHz

•

Wide Bandwidth: 20 MHz

•

Slew Rate: 10 V/µs

•

Quiescent Current: 1.45 mA/ch

•

Single-Supply Voltage Range: 1.8 to 5.5 V

•

Unity-Gain Stable

•

Small VSSOP Package

2 Applications

•

Automotive

•

High-Z Sensor Signal Conditioning

•

Transimpedance Amplifiers

•

Test and Measurement Equipment

•

Programmable Logic Controllers (PLCs)

•

Motor Control Loops

•

Communications

•

Input and Output ADC and DAC Buffers

•

Active Filters

3 Description

The OPA320-Q1 and OPA2320-Q1 (OPAx320-Q1)

devices are a new generation of precision low-voltage

CMOS operational amplifiers (op amps) optimized for

very low noise and wide bandwidth. These devices

operate on a low quiescent current of only 1.45 mA.

The OPAx320-Q1 are an excellent choice for low-

power,

single-supply

applications.

Low-noise

(7

nV/

√Hz) and high-speed operation also makes these

devices an excellent choice for driving sampling

analog-to-digital

converters

(ADCs).

Other

applications include signal conditioning and sensor

amplification.

The OPAx320-Q1 feature a linear input stage with

zero-crossover

distortion

that

delivers

excellent

common-mode rejection ratio (CMRR) of 114 dB

(typical) over the full input range. The input common-

mode range extends 100 mV beyond the negative

and positive supply rails. The output voltage typically

swings within 10 mV of the rails.

In addition, the OPAx320-Q1 have a wide supply

voltage range from 1.8 V to 5.5 V, with excellent

PSRR (106 dB) over the entire supply range. These

features

make

the

OPAx320-Q1

suitable

for

precision, low-power applications that run directly

from batteries without regulation.

The OPAx320-Q1 device is available in an 8-pin

VSSOP (DGK) package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

OPA320-Q1

SOT (5)

2.90 mm x 1.60 mm

OPA2320-Q1

VSSOP (8)

3.00 mm × 3.00 mm

(1) For all available packages, see the package option addendum

at the end of the datasheet.

Zero Crossover Distortion: Low Offset Voltage