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OPA2145IDR

TI OPA2145IDR JFET Op-Amp, 5.5 MHz, Rail-to-Rail Output

MPNOPA2145IDR
End of Life

Texas Instruments OPA2145IDR, dual JFET-input operational amplifier, 5.5 MHz gain bandwidth, 2 pA input bias, 40 µV offset, rail-to-rail output, 4.5 V to 36 V supply, -40°C to 125°C, 8-SOIC package.

$3.83Ref. price · indicative, final on quote
Texas Instruments OPA2145IDR datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA2145IDR specifications
ParameterValue
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeJ-FET
Voltage - input offset40 µV
Voltage - supply span4.5 V
Current - supply445µA
Current - input bias2 pA
Current - output (Channel)20 mA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product5.5 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits2

Product details

Dual JFET op-amp with 5.5 MHz GBW and 2 pA bias

The rail-to-rail output stage allows the output to swing within millivolts of either supply rail, preserving dynamic range in low-voltage single-supply designs. With an input offset voltage of 40 µV and a supply current of 445 µA per amplifier, this part targets precision signal conditioning where low drift and low power are both required.

The OPA2145IDR operates from a single supply as low as 4.5 V up to 36 V, or from dual supplies of ±2.25 V to ±18 V.

Frequently asked questions

What is the OPA2145IDR's output type?

The OPA2145IDR features a rail-to-rail output stage, allowing the output voltage to swing close to both supply rails. This is particularly useful in low-voltage single-supply applications where maximizing signal swing is critical.

Can OPA2145IDR replace OPA2134?

The OPA2145IDR is a newer dual JFET op-amp from TI with a 5.5 MHz GBW, 2 pA bias, and 40 µV offset, compared to the OPA2134's 8 MHz GBW and 5 pA bias. Both are dual JFET types in 8-SOIC, but the OPA2145IDR offers lower offset and bias at the expense of slightly lower bandwidth. Pin compatibility should be verified against the specific OPA2134 package variant before substitution.