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Design

OPA314, OPA2314, OPA4314

SBOS563G – MAY 2011 – REVISED JUNE 2015

OPAx314 3-MHz, Low-Power, Low-Noise, RRIO, 1.8-V CMOS

Operational Amplifier

1 Features

3 Description

The OPA314 family of single-, dual-, and quad-

1

•

channel operational amplifiers represents a new

•

Wide Supply Range: 1.8 V to 5.5 V

generation of low-power, general-purpose CMOS

•

Low Noise: 14 nV/

√Hz at 1 kHz

amplifiers. Rail-to-rail input and output swings, low

quiescent current (150

•

Gain Bandwidth: 3 MHz

with a wide bandwidth of 3 MHz, and very low noise

•

Low Input Bias Current: 0.2 pA

(14 nV/

√Hz at 1 kHz) make this family very attractive

•

Low Offset Voltage: 0.5 mV

for a variety of battery-powered applications that

require

a

good

balance

between

cost

and

•

Unity-Gain Stable

performance. The low input bias current supports

•

Internal RF/EMI Filter

applications with M

Ω source impedances.

•

Extended Temperature Range:

The robust design of the OPA314 devices provides

–40°C to 125°C

ease-of-use to the circuit designer: unity-gain stability

with capacitive loads of up to 300 pF, an integrated

2 Applications

RF/EMI rejection filter, no phase reversal in overdrive

•

Battery-Powered Instruments:

conditions, and high electrostatic discharge (ESD)

protection (4-kV HBM).

–

Consumer, Industrial, Medical

–

Notebooks, Portable Media Players

These

devices

are

optimized

for

low-voltage

operation as low as 1.8 V (±0.9 V) and up to 5.5 V

•

Photodiode Amplifiers

(±2.75 V), and are specified over the full extended

•

Active Filters

temperature range of –40°C to 125°C.

•

Remote Sensing

The OPA314 (single) is available in both SC70-5 and

•

Wireless Metering

SOT23-5 packages. The OPA2314 (dual) is offered in

•

Handheld Test Equipment

SO-8, MSOP-8, and DFN-8 packages. The quad-

channel OPA4314 is offered in a TSSOP-14 package.

EMIRR vs Frequency

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SOT-23 (5)

2.90 mm × 1.60 mm

OPA314

SC70 (5)

2.00 mm × 1.25 mm

VSSOP (8)

3.00 mm × 3.00 mm

OPA2314

SOIC (8)

4.90 mm × 3.91 mm

VSON (8)

3.00 mm × 3.00 mm

OPA4314

TSSOP (14)

5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

1

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.