1FEATURES

2• Low IQ: 50 μA/ch

• Wide Supply Range: 1.8 V to 5.5 V

• Low Noise: 25 nV/√Hz at 1 kHz

• Gain Bandwidth: 1 MHz

• Low Input Bias Current: 0.2 pA

• Low Offset Voltage: 0.5 mV

• Unity-Gain Stable

• Internal RF/EMI Filter

• Extended Temperature Range:

–40°C to +125°C

APPLICATIONS

• Battery-Powered Instruments:

– Consumer, Industrial, Medical

– Notebooks, Portable Media Players

• Sensor Signal Conditioning:

– Loop-Powered

– Notebooks, Portable Media Players

• Wireless Sensors:

– Home Security

– Remote Sensing

– Wireless Metering

DESCRIPTION

The OPA313 family of single-, dual-, and quad-

channel op amps represents a new generation of low-

cost, general purpose, micro-power operational

amplifiers. Featuring rail-to-rail input and output

swings, and low quiescent current (50 μA, typ)

combined with a wide bandwidth of 1 MHz and very low noise (25 nV/√Hz at 1 kHz) makes this family

very attractive for a variety of battery-powered

applications that require a good balance between

cost and performance. The low input bias current

supports those op amps to be used in applications

with megaohm source impedances.

The robust design of the OPA313 devices provides

ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 150 pF, integrated

RF/EMI rejection filter, no phase reversal in overdrive

conditions, and high electrostatic discharge (ESD)

protection (4-kV HBM).

These devices are optimized for operation at voltages

as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V),

and are specified over the extended temperature

range of –40°C to +125°C.

The OPA313 (single) is available in both SC70-5 and

SOT23-5 packages. The OPA2313 (dual) is offered in

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

OPA4313 is offered in a TSSOP-14 package.