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Analog Devices OP181GP — Analog & Data Acquisition

OP181GP op amp, 100 kHz GBP, 28 V/µs slew, 3.3 µA supply

MPNOP181GP
End of Life

Analog Devices OP181GP general-purpose op amp, single channel, 100 kHz gain bandwidth, 28 V/µs slew rate, rail-to-rail output, 2.7 V to 12 V supply, 3.3 µA supply current, 8-DIP through-hole package.

$1.0Ref. price · indicative, final on quote
Packaging8-DIP (0.300", 7.62mm)
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OP181GP specifications
ParameterValue
Output typeRail-to-Rail
MountingThrough Hole
Amplifier typeGeneral Purpose
Voltage - input offset100 µV
Voltage - supply span2.7 V
Current - supply3.3µA (x1 Channels)
Current - input bias3 nA
Current - output (Channel)3.5 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product100 kHz
PackageBulk
Slew rate28V/µs
Case8-DIP (0.300\", 7.62mm)
Number of circuits1

Product details

100 kHz GBP at 3.3 µA — the micropower trade-off

Its defining parametric pair is a 100 kHz gain-bandwidth product and a supply current of just 3.3 µA per channel — a combination that targets battery-powered or loop-powered sensor conditioning where every microamp counts.

28 V/µs slew rate — fast edges from a micropower amp

A 28 V/µs slew rate is unusually high for an op-amp drawing 3.3 µA. This means the OP181GP can handle fast pulse edges or moderate-frequency signals (up to roughly 45 kHz full-power bandwidth) without slew-rate limiting, while keeping the quiescent draw low. For comparison, the ADA4096-2WARMZ-RL offers a 786 kHz GBP but a much slower 0.4 V/µs slew rate and draws 100 µA per channel — a different power-vs-speed trade-off. The OP181GP's slew rate is closer to that of the 80 MHz ADA4841-2 (13 V/µs,), but at a fraction of the bandwidth and supply current. If your design needs to amplify a 10 kHz square wave with fast edges on a 3 V rail, the OP181GP's slew rate is the spec that makes it work where most micropower parts would slew-limit.

Note that the OP181GP is RoHS non-compliant — it is the tin/lead (SnPb) plated version intended for legacy, military, or high-reliability assemblies that require leaded solder. If your process requires RoHS compliance, check the OP181GPZ variant (if available) or plan for an exemption.

Through-hole DIP — board-level fit and rework

The OP181GP is supplied in an 8-DIP (0.300", 7.62 mm) plastic package with a 8-PDIP supplier device package designation. The mounting type is Through Hole. This package is straightforward for prototyping, breadboarding, and manual assembly. For production runs, the through-hole form factor means wave soldering or hand-solder rework; no reflow profile or moisture sensitivity level (MSL) to track. The 0.300" body width fits standard DIP sockets.

Frequently asked questions

Is OP181GP rail-to-rail output?

Yes, the OP181GP features a rail-to-rail output stage. The input common-mode range is not rail-to-rail — it extends from the negative rail to roughly 1.1 V below the positive rail at 3.3 V supply, typical for this class. The output can swing within millivolts of both rails, maximizing dynamic range in low-voltage single-supply designs.