Texas Instruments OPA2990IPWR

Overview

OPA2990IPWR from Texas Instruments is a dual-channel, 40-V rail-to-rail input/output operational amplifier with ±300 µV max offset voltage, ±0.6 µV/°C drift, and 1.1-MHz gain-bandwidth product. It operates from ±1.35 V to ±20 V or 2.7 V to 40 V supply, delivers 4.5 V/µs slew rate, and draws only 120 µA per amplifier-enabling precision signal conditioning in high-voltage industrial sensor interfaces and data-acquisition front-ends.

For engineers reviewing the OPA2990IPWR datasheet, OPA2990IPWR pinout, OPA2990IPWR application, or OPA2990IPWR equivalent, this page provides verified electrical specs, SOIC-8 package details, dual-channel functional context, shutdown capability, and validated alternative options for multiplexed analog input systems, motor control feedback loops, and high-side current sensing designs.

Technical Context

The OPA2990IPWR implements a dual-channel CMOS input stage with rail-to-rail common-mode range extending 0.2 V beyond both supply rails and differential input voltage tolerance up to VS + 0.2 V. Its architecture supports open-loop comparator operation and MUX-friendly inputs without phase reversal.

Each channel features independent high-precision DC performance (±300 µV offset, ±0.6 µV/°C drift) and robust AC behavior (115 dB CMRR at 40 V, 30 nV/√Hz noise at 1 kHz), enabling stable closed-loop gain in wide-supply industrial environments from –40°C to +125°C.

Key Specifications

Pinout & Package

OPA2990IPWR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.90 mm, with exposed pad option not applicable. Thermal resistance R_θJA is 138.7°C/W, and recommended PCB layout includes low-impedance ground plane connection to pin 4 (V–).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel precision op amp applications.

Compared with OPA2197IDR and AD8602ARMZ, the OPA2990IPWR uniquely balances 40-V operation, rail-to-rail input/output, sub-mV offset, and ultra-low 120 µA quiescent current - making it the only dual op-amp qualified for precision signal conditioning in unregulated 24-V industrial power domains without thermal derating or supply scaling.

Availability

OPA2990IPWR is available at Aetrix Electronics and suitable for programmable logic controllers, motor drive feedback circuits, and high-voltage data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA2990IPWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The OPAx990 product line was designed specifically for high-voltage industrial signal conditioning-emphasizing rail-to-rail operation, low drift, and robust EMI rejection in harsh electromagnetic environments.

FAQ

What supply voltage range does the OPA2990IPWR support?

The OPA2990IPWR operates from 2.7 V to 40 V single supply or ±1.35 V to ±20 V dual supply. This wide range enables direct integration into 24-V PLC backplanes, 36-V motor drives, and legacy 5-V instrumentation without external regulators. The device maintains specified performance-including ±300 µV offset and 1.1-MHz GBW-across the entire voltage range, as confirmed in Section 6.3 of the SBOS933I datasheet.

Does the OPA2990IPWR include shutdown functionality?

No, the OPA2990IPWR (SOIC-8, D package) does not feature shutdown pins. Shutdown capability is only present in the OPA2990S variants (e.g., OPA2990IDGSR with VSSOP-10 or OPA2990IRUGR with X2QFN-10), which include dedicated SHDN1 and SHDN2 inputs. The standard OPA2990IPWR lacks these pins and remains fully operational whenever powered within its rated supply range.

What is the maximum output current capability of the OPA2990IPWR?

The OPA2990IPWR delivers ±80 mA short-circuit output current per channel, as specified in Section 6.7 of the datasheet. This enables direct driving of moderate-impedance loads such as ADC reference buffers, optocoupler LEDs, or small relays without external transistors. Sustained output current should remain below 25 mA to avoid thermal shutdown under typical SOIC-8 PCB layouts with standard copper area.

Can the OPA2990IPWR be used as a comparator?

Yes, the OPA2990IPWR supports open-loop comparator operation due to its MUX-friendly inputs and absence of phase reversal up to the supply rails. Its 4.5 V/µs slew rate and rail-to-rail output allow clean transitions for zero-crossing or threshold-detection tasks. However, it lacks built-in hysteresis or latch functionality, so external positive feedback is required for noise-immune comparator designs involving the OPA2990IPWR.

What is the common-mode rejection ratio (CMRR) of the OPA2990IPWR at full 40-V supply?

At VS = 40 V, the OPA2990IPWR achieves a minimum CMRR of 100 dB and typical value of 115 dB over –40°C to +125°C, as documented in Table 6-7 of the SBOS933I datasheet. This high rejection enables accurate amplification of low-level sensor signals (e.g., millivolt-level thermocouple outputs) in noisy 24-V industrial environments where common-mode transients exceed 10 V peak-to-peak.