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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments OPA2990SIDGSR

Name: OPA2990SIDGSR
Brand: Texas Instruments
SKU: OPA2990SIDGSR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OPA2990SIDGSR

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Datasheet:: OPA2990SIDGSR.pdf

Description:: IC OPAMP

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Product details

Overview

OPA2990SIDGSR 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-designed for high-precision signal conditioning in industrial data acquisition and motor control systems.

For engineers reviewing the OPA2990SIDGSR datasheet, OPA2990SIDGSR pinout, OPA2990SIDGSR application, or OPA2990SIDGSR equivalent, this page delivers verified electrical specs, dual-channel pin mapping for SOIC-8, real-world use cases in multiplexed analog front-ends and current sensing, and two validated alternative op amps with documented functional trade-offs.

Technical Context

The OPA2990SIDGSR implements a complementary input stage enabling rail-to-rail common-mode input range (V– – 0.2 V to V+ + 0.2 V) and differential input operation up to supply rails-supporting MUX-friendly operation and open-loop comparator use. Its 4.5 V/µs slew rate and 115 dB CMRR ensure fidelity in high-voltage, low-noise signal chains.

It features independent shutdown control per channel (SHDN1/SHDN2), operates from ±1.35 V to ±20 V (or 2.7 V to 40 V single supply), and delivers ±80 mA short-circuit output current-making it suitable for driving heavy loads or interfacing with ADC reference buffers without external buffering.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 40 V (single) or ±1.35 V to ±20 V (dual)-supports wide industrial power rails including 24-V and 36-V systems.
Input Offset Voltage	±0.3 mV (max at 25°C); ±1.75 mV (max over –40°C to 125°C)-enables accurate DC-coupled amplification in precision sensor interfaces.
Gain-Bandwidth Product	1.1 MHz-provides stable unity-gain operation with sufficient bandwidth for 100-kHz signal conditioning and anti-aliasing filter driving.
Slew Rate	4.5 V/µs-ensures fast settling (<4 µs to 0.1%) for step inputs in motor current feedback loops.
Input Bias Current	±10 pA-minimizes voltage error in high-impedance source applications like thermocouple or bridge sensor amplification.
Common-Mode Rejection	115 dB (typ at 40 V)-rejects noise in high-side current sensing where common-mode voltages approach supply rails.
Output Swing	Within 2 mV of rails (no load, 40 V supply)-preserves dynamic range in low-headroom, high-resolution ADC driver stages.

Pinout & Package

OPA2990SIDGSR is packaged in an 8-pin SOIC (D package) with body size 4.90 mm × 3.90 mm, rated for operation from –40°C to +125°C and featuring exposed pad thermal performance optimized for industrial PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1: OUT1	Output, Channel 1	Delivers amplified signal; rail-to-rail swing supports full-scale ADC input drive.
2: IN1–	Inverting Input, Channel 1	Accepts feedback or inverted signal path; supports differential input up to supply rails.
3: IN1+	Noninverting Input, Channel 1	High-impedance node (±10 pA bias) for sensor or reference connection.
4: V–	Negative Supply Rail	Reference for both channels; thermal pad (if present in other variants) must be connected to V–.
5: IN2+	Noninverting Input, Channel 2	Independent high-Z input for second signal path-e.g., auxiliary current sense or reference buffer.
6: IN2–	Inverting Input, Channel 2	Configurable for inverting gain or differential pair; same rail-to-rail input capability as Channel 1.
7: OUT2	Output, Channel 2	Independent output; capable of ±80 mA short-circuit current for driving capacitive loads or level-shifting networks.
8: V+	Positive Supply Rail	Supports up to 40 V; enables direct interface with 24-V or 36-V industrial bus domains.

Key Features

Feature	Design Value
Rail-to-rail I/O	Input common-mode range extends 0.2 V beyond rails; output swings within 2 mV of rails-maximizes usable dynamic range in low-supply or high-precision systems.
MUX-friendly inputs	Differential input voltage can reach full supply swing; allows direct connection to analog multiplexer outputs without clamping diodes or level shifters.
Low 1/f noise	6 µVPP (0.1 Hz–10 Hz)-critical for DC-stable amplification in weigh scales, strain gauges, and thermopile sensors.
Robust EMIRR	78 dB at 1.8 GHz-maintains signal integrity in noisy motor drive or switching power supply environments with minimal filtering overhead.
Shutdown control	Not implemented on OPA2990SIDGSR (SOIC-8 variant); only available on OPA2990S variants (e.g., DGS, RUG) with SHDN1/SHDN2 pins.

Applications

Multiplexed Data Acquisition	High-Side Current Sensing
Use Scenario: 16-channel industrial DAQ system using analog multiplexer (e.g., TMUX6209) feeding into successive approximation ADC (e.g., ADS8860). IC Role / Device Role / Timing Role: Dual OPA2990SIDGSR channels serve as antialiasing filter drivers and reference buffers-conditioning multiplexed sensor signals before digitization. Use Value: Rail-to-rail input eliminates need for level-shifting; 115 dB CMRR rejects crosstalk between adjacent channels during switching transients.	Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor drives with 24-V bus and shunt-based sensing. IC Role / Device Role / Timing Role: One channel amplifies differential voltage across high-side shunt resistor; second channel buffers reference voltage for ADC. Use Value: ±0.3 mV offset ensures <0.5% gain error at 50-mV full-scale; 40-V rating supports direct connection to 24-V bus without attenuation.
ADC Driver & Reference Buffer	Programmable Logic Controller (PLC) Analog I/O
Use Scenario: Driving 18-bit SAR ADC (e.g., ADS8860) with 1-MSPS sampling in test equipment requiring <1-LSB integral nonlinearity. IC Role / Device Role / Timing Role: OPA2990SIDGSR provides low-noise, low-distortion signal conditioning and stable reference buffering for precision ADC front-end. Use Value: 30 nV/√Hz input noise and 0.00162% THD+N preserve SNR >98 dB; 1.1-MHz GBW ensures stable settling within 4 µs.	Use Scenario: Modular PLC analog input module accepting 0–10 V, ±10 V, and 4–20 mA field signals across eight isolated channels. IC Role / Device Role / Timing Role: Dual OPA2990SIDGSR per channel performs signal scaling, filtering, and isolation interface conditioning in compact SOIC footprint. Use Value: 125°C operating range matches industrial PLC ambient requirements; SOIC-8 package enables standard wave-solder assembly and thermal management.

Multiplexed Data Acquisition

High-Side Current Sensing

Use Scenario: 16-channel industrial DAQ system using analog multiplexer (e.g., TMUX6209) feeding into successive approximation ADC (e.g., ADS8860).

IC Role / Device Role / Timing Role: Dual OPA2990SIDGSR channels serve as antialiasing filter drivers and reference buffers-conditioning multiplexed sensor signals before digitization.

Use Value: Rail-to-rail input eliminates need for level-shifting; 115 dB CMRR rejects crosstalk between adjacent channels during switching transients.

Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor drives with 24-V bus and shunt-based sensing.

IC Role / Device Role / Timing Role: One channel amplifies differential voltage across high-side shunt resistor; second channel buffers reference voltage for ADC.

Use Value: ±0.3 mV offset ensures <0.5% gain error at 50-mV full-scale; 40-V rating supports direct connection to 24-V bus without attenuation.

ADC Driver & Reference Buffer

Programmable Logic Controller (PLC) Analog I/O

Use Scenario: Driving 18-bit SAR ADC (e.g., ADS8860) with 1-MSPS sampling in test equipment requiring <1-LSB integral nonlinearity.

IC Role / Device Role / Timing Role: OPA2990SIDGSR provides low-noise, low-distortion signal conditioning and stable reference buffering for precision ADC front-end.

Use Value: 30 nV/√Hz input noise and 0.00162% THD+N preserve SNR >98 dB; 1.1-MHz GBW ensures stable settling within 4 µs.

Use Scenario: Modular PLC analog input module accepting 0–10 V, ±10 V, and 4–20 mA field signals across eight isolated channels.

IC Role / Device Role / Timing Role: Dual OPA2990SIDGSR per channel performs signal scaling, filtering, and isolation interface conditioning in compact SOIC footprint.

Use Value: 125°C operating range matches industrial PLC ambient requirements; SOIC-8 package enables standard wave-solder assembly and thermal management.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
OPA2182IDR	Lower offset (±4 µV), lower noise (5.7 nV/√Hz), but narrower supply (±2.25 V to ±18 V); no rail-to-rail input.	Better DC accuracy in lab-grade instrumentation; unsuitable for 24-V high-side sensing due to limited common-mode range.	Select when ultra-low offset dominates over rail-to-rail input and 40-V operation.
LM2904BDR	Wider temp range (–40°C to 125°C), lower cost, but higher offset (±1.5 mV), lower GBW (1.2 MHz), no rail-to-rail input/output.	Cost-sensitive industrial controls where ±10-mV error is acceptable; lacks MUX compatibility and high-voltage headroom.	Select for legacy 5-V/12-V systems where precision and rail-to-rail operation are not required.

Compared with OPA2990SIDGSR, OPA2182IDR trades 40-V operation and rail-to-rail input for superior DC precision, while LM2904BDR sacrifices offset, noise, and input range for cost and broad availability-making OPA2990SIDGSR the optimal balance for 24–36-V industrial signal chains demanding both robustness and accuracy.

Availability

OPA2990SIDGSR is available at Aetrix Electronics and suitable for multiplexed data acquisition, high-side current sensing, and PLC analog I/O modules requiring stable component supply across extended temperature and voltage ranges.

Supply support for OPA2990SIDGSR 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and industrial-grade IC design.

The OPAx990 family was engineered for high-voltage industrial signal conditioning-targeting applications like motor control, power delivery, and programmable logic controllers where rail-to-rail operation, low drift, and EMI resilience are critical.

FAQ

What is the maximum supply voltage for OPA2990SIDGSR?

The OPA2990SIDGSR supports a total supply voltage range of 2.7 V to 40 V (single supply) or ±1.35 V to ±20 V (dual supply). Absolute maximum rating is 42 V across V+ and V– terminals. Operation at 40 V enables direct integration into 24-V and 36-V industrial power domains without external regulation-critical for high-side current sensing and motor drive feedback circuits using the OPA2990SIDGSR.

Does OPA2990SIDGSR include shutdown functionality?

No, the OPA2990SIDGSR (SOIC-8, D package) does not feature shutdown pins. Shutdown capability is only available on the OPA2990S variants-such as OPA2990SIDGS (VSSOP-10) and OPA2990SIRUG (X2QFN-10)-which provide dedicated SHDN1 and SHDN2 pins. The OPA2990SIDGSR is a standard dual op amp without enable/disable control, simplifying layout and reducing external component count in always-on signal paths.

What is the input common-mode voltage range of OPA2990SIDGSR?

The OPA2990SIDGSR supports a rail-to-rail input common-mode range from (V–) – 0.2 V to (V+) + 0.2 V. This allows direct interface with analog multiplexers, comparators, or sensors operating near supply rails-enabling MUX-friendly operation and open-loop comparator use without external level shifting. This specification is confirmed across the full –40°C to +125°C temperature range and applies to both channels of the OPA2990SIDGSR.

Can OPA2990SIDGSR drive capacitive loads directly?

Yes, the OPA2990SIDGSR is specified for stable operation with capacitive loads up to 100 pF without external compensation. Its 60° phase margin (G = +1, RL = 10 kΩ, CL = 20 pF) and 4.5 V/µs slew rate ensure reliable settling in ADC driver and filter applications. For larger loads (>100 pF), a series resistor (e.g., 10–50 Ω) between OPA2990SIDGSR output and capacitor is recommended to maintain stability and prevent peaking.

Is OPA2990SIDGSR suitable for high-temperature industrial environments?

Yes, the OPA2990SIDGSR is fully specified from –40°C to +125°C and qualified for industrial temperature operation. Its ±0.6 µV/°C offset drift, 115 dB CMRR at elevated temperatures, and robust 78 dB EMIRR performance at 1.8 GHz make it suitable for under-hood automotive subsystems, motor drive control modules, and factory-floor PLCs-where thermal stability and noise immunity are essential for reliable long-term operation of the OPA2990SIDGSR.

OPA2990SIDGSR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: Rail-to-Rail

Slew Rate:: 4.5V/µs

Gain Bandwidth Product:: 1.1 MHz

-3db Bandwidth:: -

Current - Input Bias:: 10 pA

Voltage - Input Offset:: 300 µV

Current - Supply:: 120µA (x2 Channels)

Current - Output / Channel:: 80 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 40 V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-VSSOP

OPA2990SIDGSR FAQ

1.How can I place an order for OPA2990SIDGSR through Aetrix?

Please submit a Request for Quotation (RFQ) for OPA2990SIDGSR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for OPA2990SIDGSR reliable?

The price and inventory of OPA2990SIDGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2990SIDGSR is usually 5 days.

3.What payment methods are accepted for OPA2990SIDGSR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2990SIDGSR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OPA2990SIDGSR?

OPA2990SIDGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OPA2990SIDGSR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for OPA2990SIDGSR?

For technical support, including OPA2990SIDGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2990SIDGSR requirements.

6.How does Aetrix verify that OPA2990SIDGSR is sourced from the original manufacturer or authorized distributors?

All OPA2990SIDGSR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA2990SIDGSR meets industry standards.

7.What is the process for return or replacement of OPA2990SIDGSR?

All OPA2990SIDGSR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2990SIDGSR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The OPA2990SIDGSR part is unused and in its original packaging.

Return procedure for OPA2990SIDGSR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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