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Texas Instruments OPA2992IDR

Name: OPA2992IDR
Brand: Texas Instruments
SKU: OPA2992IDR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OPA2992IDR

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: OPA2992IDR.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

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Product details

Overview

OPA2992IDR from Texas Instruments is a dual-channel, 40V rail-to-rail input/output precision operational amplifier with ±210 µV offset voltage, 10.6 MHz gain-bandwidth, and 32 V/µs slew rate-designed for high-side/low-side current sensing and ADC driver applications in industrial motor drives and power delivery systems.

For engineers reviewing the OPA2992IDR datasheet, OPA2992IDR pinout, OPA2992IDR application, or OPA2992IDR equivalent, key selection criteria include its ±0.25 µV/°C offset drift, 7 nV/√Hz input voltage noise at 1 kHz, 115 dB CMRR, rail-to-rail operation from 2.7 V to 40 V supply, and robust MUX-friendly/comparator-capable inputs.

Technical Context

The OPA2992IDR implements a high-voltage complementary bipolar input stage enabling rail-to-rail common-mode input range (V– to V+) and differential input operation up to the supply rails. Its architecture supports open-loop comparator use without phase reversal, validated by no-phase-reversal test waveforms.

It delivers 32 V/µs slew rate and 10.6 MHz GBW with unity-gain stability into 20 pF capacitive loads, while maintaining 0.65 µs settling time to 0.1% for 10 V steps-enabling fast, precise signal conditioning in multiplexed data-acquisition systems and programmable logic controller analog I/O modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 40 V (±1.35 V to ±20 V): supports wide industrial bus voltages including 24 V and 36 V systems without level-shifting.
Input Offset Voltage	±0.21 mV typical: enables sub-0.1% error in 12-bit+ current-sense amplification with shunt resistors ≥10 mΩ.
Offset Drift	±0.25 µV/°C typical: ensures <1 µV total drift over –40°C to 125°C, critical for uncalibrated temperature-stable measurement.
Input Voltage Noise	7 nV/√Hz at 1 kHz: preserves SNR in low-level sensor interfaces like strain gauges and thermopiles.
CMRR	115 dB at VS = 40 V: rejects common-mode transients in high-noise motor drive environments.
Slew Rate	32 V/µs: supports >100 kHz full-scale step response in closed-loop configurations driving 10 kΩ loads.
Quiescent Current	2.4 mA per amplifier: balances performance and power in always-on industrial monitoring nodes.

Pinout & Package

OPA2992IDR is packaged in an 8-pin SOIC (D package), 4.9 mm × 6 mm body size with standard lead pitch. Thermal pad is not present; device uses conventional SOIC thermal dissipation characteristics.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT1)	Output, Channel 1	Low-impedance buffered output capable of sourcing/sinking ±65 mA; rail-to-rail swing within 7 mV of rails at no load.
2 (IN1–)	Inverting Input, Channel 1	Differential input terminal with ±10 pA bias current; operates up to supply rails-enables direct connection to shunt resistors in high-side sensing.
3 (IN1+)	Noninverting Input, Channel 1	High-impedance input (6 TΩ \|\| 1 pF) with rail-to-rail common-mode range; usable as comparator input without external clamping.
4 (V–)	Negative Supply	Reference node for both channels; must be connected to system ground or negative rail; thermal pad (if present in other variants) is not used in this SOIC variant.
5 (IN2+)	Noninverting Input, Channel 2	Independent high-Z input identical to IN1+; supports dual-path signal conditioning or differential pair configuration.
6 (IN2–)	Inverting Input, Channel 2	Independent differential input matching IN1–; allows simultaneous dual-channel current sensing or matched filter stages.
7 (OUT2)	Output, Channel 2	Second independent output with identical AC/DC specs to OUT1; enables space-efficient dual-signal routing without cross-talk degradation.
8 (V+)	Positive Supply	Highest potential supply node; supports up to 40 V absolute max; PSRR of 115 dB minimizes supply ripple coupling into output.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables direct interfacing with 0 V–40 V signals without external level-shifting circuitry-critical for shunt-based current sensing across full supply range.
MUX-friendly/comparator inputs	Operates linearly with differential inputs up to supply rails and functions reliably in open-loop comparator mode without latch-up or phase reversal.
Low 7 nV/√Hz input voltage noise	Preserves dynamic range in precision sensor front-ends where signal amplitudes are below 100 mV and bandwidth exceeds 10 kHz.
115 dB CMRR at 40 V supply	Rejects high dv/dt noise from switching power stages in motor drives and UPS systems, reducing need for additional filtering.
32 V/µs slew rate with 10.6 MHz GBW	Supports stable unity-gain operation into 20 pF loads while delivering fast transient response for real-time control loop feedback paths.

Applications

High-Side Current Sensing	ADC Driver for Precision Data Acquisition
Use Scenario: Monitoring phase current in 3-phase BLDC motor inverters using shunt resistor between high-side FET and bus voltage (up to 40 V). IC Role / Device Role / Timing Role: Differential amplifier configured as non-inverting gain stage (G = 20–100) referenced to V+, rejecting common-mode bus noise. Use Value: ±210 µV offset and ±0.25 µV/°C drift ensure ≤0.5% full-scale error over temperature without calibration; rail-to-rail input accepts V_shunt = 0–100 mV directly.	Use Scenario: Driving SAR ADC inputs in programmable logic controller (PLC) analog input modules with 16-bit resolution and 100 kSPS sampling. IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer and gain stage placed immediately before ADC sample-and-hold input. Use Value: 7 nV/√Hz noise and 0.00005% THD+N preserve ENOB >15.5 bits; 0.65 µs 0.1% settling supports 100 kSPS throughput with minimal acquisition dead time.
Low-Side Current Sensing	Reference Buffer for High-Voltage Power Supplies
Use Scenario: Measuring load current in server PSU output rails (12 V, 48 V) via ground-referenced shunt with isolation requirements. IC Role / Device Role / Timing Role: Single-supply amplifier (V+ = 12 V or 48 V, V– = GND) amplifying mV-level shunt voltage with G = 50–200. Use Value: Rail-to-rail output swings to within 48 mV of GND and V+, enabling full utilization of ADC input range; ±10 pA bias current prevents shunt error in high-value (>1 Ω) sense resistors.	Use Scenario: Stabilizing and buffering precision voltage references (e.g., REF5025) in 40 V industrial power supplies with remote sensing. IC Role / Device Role / Timing Role: Unity-gain follower isolating reference from load capacitance and providing low-impedance drive to DAC or error amplifier inputs. Use Value: 142 dB open-loop gain ensures <1 ppm gain error; 115 dB CMRR rejects noise coupled onto reference traces; 2.4 mA quiescent current avoids excessive self-heating near sensitive references.

High-Side Current Sensing

ADC Driver for Precision Data Acquisition

Use Scenario: Monitoring phase current in 3-phase BLDC motor inverters using shunt resistor between high-side FET and bus voltage (up to 40 V).

IC Role / Device Role / Timing Role: Differential amplifier configured as non-inverting gain stage (G = 20–100) referenced to V+, rejecting common-mode bus noise.

Use Value: ±210 µV offset and ±0.25 µV/°C drift ensure ≤0.5% full-scale error over temperature without calibration; rail-to-rail input accepts V_shunt = 0–100 mV directly.

Use Scenario: Driving SAR ADC inputs in programmable logic controller (PLC) analog input modules with 16-bit resolution and 100 kSPS sampling.

IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer and gain stage placed immediately before ADC sample-and-hold input.

Use Value: 7 nV/√Hz noise and 0.00005% THD+N preserve ENOB >15.5 bits; 0.65 µs 0.1% settling supports 100 kSPS throughput with minimal acquisition dead time.

Low-Side Current Sensing

Reference Buffer for High-Voltage Power Supplies

Use Scenario: Measuring load current in server PSU output rails (12 V, 48 V) via ground-referenced shunt with isolation requirements.

IC Role / Device Role / Timing Role: Single-supply amplifier (V+ = 12 V or 48 V, V– = GND) amplifying mV-level shunt voltage with G = 50–200.

Use Value: Rail-to-rail output swings to within 48 mV of GND and V+, enabling full utilization of ADC input range; ±10 pA bias current prevents shunt error in high-value (>1 Ω) sense resistors.

Use Scenario: Stabilizing and buffering precision voltage references (e.g., REF5025) in 40 V industrial power supplies with remote sensing.

IC Role / Device Role / Timing Role: Unity-gain follower isolating reference from load capacitance and providing low-impedance drive to DAC or error amplifier inputs.

Use Value: 142 dB open-loop gain ensures <1 ppm gain error; 115 dB CMRR rejects noise coupled onto reference traces; 2.4 mA quiescent current avoids excessive self-heating near sensitive references.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 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 (4.5–36 V); no MUX-friendly input rating.	Better DC accuracy for lab-grade instrumentation; unsuitable for 36–40 V bus sensing or comparator-mode use.	Select OPA2182IDR only when ultra-low offset dominates over rail-to-rail input flexibility and 40 V operation.
AD8628ARZ-REEL7	Zero-drift architecture (0.005 µV/°C drift), but limited bandwidth (2.5 MHz), lower slew rate (1.5 V/µs), and max 36 V supply.	Ideal for DC-coupled sensor conditioning requiring long-term stability; cannot support fast-settling ADC drivers or motor control feedback loops.	Choose AD8628ARZ-REEL7 for µV-level drift-critical applications below 100 kHz; avoid for dynamic current sensing or high-speed buffering.

Compared with OPA2182IDR and AD8628ARZ-REEL7, the OPA2992IDR uniquely combines 40 V operation, rail-to-rail input to the supply rails, and MUX/comparator capability-making it the only option among the three suitable for uncalibrated high-voltage current sensing with real-time overload detection.

Availability

OPA2992IDR is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and high-voltage power delivery systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA2992IDR 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 high-reliability industrial ICs.

The OPAx992 product line was engineered specifically for high-voltage industrial signal conditioning-emphasizing rail-to-rail operation, low drift, low noise, and robustness in noisy, thermally demanding environments like factory automation and energy infrastructure.

FAQ

What is the maximum supply voltage for OPA2992IDR?

The OPA2992IDR supports a maximum supply voltage of 40 V across V+ and V– pins, with absolute maximum ratings allowing up to 42 V. Operation at 40 V enables direct interface with industrial 24 V and 36 V bus systems without external regulators, preserving headroom for rail-to-rail output swing and ensuring compatibility with high-side current sensing topologies where V+ connects to the bus voltage.

Does OPA2992IDR support true rail-to-rail input operation?

Yes, the OPA2992IDR supports true rail-to-rail input operation: both inverting and non-inverting inputs function correctly with common-mode voltages ranging from V– to V+, including exactly at the supply rails. This is confirmed by functional specifications and test data showing linear operation and no phase reversal at V_CM = V– and V_CM = V+. The feature enables direct connection to shunt resistors in high-side sensing without level-shifting networks, a key design advantage over many competing op amps.

Can OPA2992IDR be used as a comparator?

Yes, the OPA2992IDR is explicitly designed for comparator use in open-loop configurations. Its MUX-friendly inputs tolerate differential voltages up to the supply rails, and characterization data (Figure 5-34) confirms no phase reversal during overdrive. While not optimized for speed like dedicated comparators, it provides reliable decision-making in applications such as overcurrent detection or window comparison where precision DC thresholds matter more than nanosecond response.

What is the typical quiescent current per channel for OPA2992IDR?

The typical quiescent current per channel for OPA2992IDR is 2.4 mA at 25°C and nominal supply conditions, rising to 2.84 mA across the full –40°C to 125°C operating range. This value is measured with zero output load and applies to each of the two independent amplifiers. The consistent low-power profile makes OPA2992IDR suitable for thermally constrained industrial modules where heat dissipation must be tightly managed without sacrificing AC performance.

Is OPA2992IDR pin-compatible with other devices in the OPAx992 family?

No, OPA2992IDR is not pin-compatible with other OPAx992 variants such as OPA2992S (shutdown version) or OPA2992 in DDF (SOT-23-8) or DGK (VSSOP-8) packages. The OPA2992IDR uses the SOIC-8 (D) package with pin 1 = OUT1, pin 2 = IN1–, pin 3 = IN1+, pin 4 = V–, pin 5 = IN2+, pin 6 = IN2–, pin 7 = OUT2, pin 8 = V+. Other packages have different pinouts-for example, DDF places V+ at pin 8 but routes IN2+ and IN2– differently-and shutdown variants add SHDN pins. Always verify pin mapping against the specific package drawing.

OPA2992IDR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: Rail-to-Rail

Slew Rate:: 32V/µs

Gain Bandwidth Product:: 10.6 MHz

-3db Bandwidth:: -

Current - Input Bias:: 10 pA

Voltage - Input Offset:: 210 µV

Current - Supply:: 2.4mA (x2 Channels)

Current - Output / Channel:: 65 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:: 8-SOIC

OPA2992IDR FAQ

1.How can I place an order for OPA2992IDR through Aetrix?

Please submit a Request for Quotation (RFQ) for OPA2992IDR 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 OPA2992IDR reliable?

The price and inventory of OPA2992IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2992IDR is usually 5 days.

3.What payment methods are accepted for OPA2992IDR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2992IDR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OPA2992IDR?

OPA2992IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OPA2992IDR 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 OPA2992IDR?

For technical support, including OPA2992IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2992IDR requirements.

6.How does Aetrix verify that OPA2992IDR is sourced from the original manufacturer or authorized distributors?

All OPA2992IDR 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 OPA2992IDR meets industry standards.

7.What is the process for return or replacement of OPA2992IDR?

All OPA2992IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2992IDR, 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 OPA2992IDR part is unused and in its original packaging.

Return procedure for OPA2992IDR:

1.Submit a request within 90 days.

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

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