Skip to main content
Log in
Texas Instruments OPA705PA — Logic ICs

Texas Instruments OPA705PA Op Amp, 1 MHz, Rail-to-Rail

MPNOPA705PA
End of Life

Texas Instruments OPA705PA, General Purpose Amplifier, 1 Circuit, 1 MHz Gain Bandwidth, 0.6 V/µs Slew Rate, Rail-to-Rail Output, 8-DIP (0.300", 7.62mm), Through Hole, -40°C to 85°C.

$0.84Ref. price · indicative, final on quote
Texas Instruments OPA705PA datasheet (PDF)
Packaging8-DIP (0.300", 7.62mm)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA705PA specifications
ParameterValue
Output typeRail-to-Rail
MountingThrough Hole
Amplifier typeGeneral Purpose
Voltage - input offset500 µV
Voltage - supply span12 V
Current - supply160µA
Current - input bias1 pA
Current - output (Channel)10 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product1 MHz
PackageBulk
Slew rate0.6V/µs
Case8-DIP (0.300\", 7.62mm)
Number of circuits1

Product details

Low-power, rail-to-rail general-purpose op amp in a through-hole DIP

It delivers a 1 MHz gain-bandwidth product with a 0.6 V/µs slew rate, drawing just 160 µA of supply current. Input bias current is a CMOS-typical 1 pA, so it won't load high-impedance sensors.

That's fine for audio, sensor conditioning, and low-speed control loops, but not for video or fast ADC drivers. The 1 MHz gain-bandwidth product supports gains up to 100 with a 10 kHz closed-loop bandwidth — adequate for most precision analog front-ends. If you need to drive a 10-bit ADC at 100 kSPS, the settling time from this amplifier will be the bottleneck; consider a faster part like the TLV9351 (3.5 MHz, 20 V/µs) for that role.

Frequently asked questions

Is OPA705PA suitable for single-supply applications?

Yes. The rail-to-rail output stage and 4 V to 12 V supply span make it well-suited for single-supply operation from a 5 V or 12 V rail. The input common-mode range does not extend to the positive rail — it stops about 1.1 V below V+ — so for high-side sensing at 3.3 V single supply, look at a true rail-to-rail input amplifier instead.

Can OPA705PA replace a failed OPA703PA?

The OPA705PA and OPA703PA share the same pinout (standard single op-amp DIP-8) and both are general-purpose CMOS amplifiers with rail-to-rail output. The OPA703PA has a 1 MHz GBW and 0.6 V/µs slew rate — identical to the OPA705PA. If your circuit uses a 5 V rail or higher, the OPA705PA is a direct drop-in replacement. For 3.3 V or 2.7 V rails, the OPA703PA remains the correct choice.

What is the slew rate of OPA705PA?

0.6 V/µs.