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Texas Instruments OPA2992IDDFR
- Part No.:
- OPA2992IDDFR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
OPA2992IDDFR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:702
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Product details
Overview
OPA2992IDDFR from Texas Instruments is a dual-channel, 40V rail-to-rail input/output operational amplifier optimized for high-precision industrial signal conditioning. It delivers ±210 µV offset voltage, 10.6 MHz gain-bandwidth, 32 V/µs slew rate, and 7 nV/√Hz input voltage noise at 1 kHz - enabling accurate current sensing and ADC driver applications in motor drives and power delivery systems.
For engineers reviewing the OPA2992IDDFR datasheet, OPA2992IDDFR pinout, OPA2992IDDFR application, or OPA2992IDDFR equivalent, this page provides verified electrical specifications, dual-channel pin mapping for SOT-23-8 (DDF) package, real-world use cases in high-side/low-side current sensing and multiplexed data acquisition, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The OPA2992IDDFR implements a precision bipolar-input architecture with rail-to-rail input common-mode range extending to both supply rails and rail-to-rail output swing within 7 mV of rails under no-load conditions. Its MUX-friendly inputs support open-loop comparator operation without phase reversal, while robust EMIRR performance ensures immunity in noisy industrial environments.
Internally compensated for unity-gain stability, the device achieves 64° phase margin with 20 pF capacitive load and supports fast settling (0.65 µs to 0.1%) - critical for time-multiplexed sensor interfaces and high-speed control loops requiring low distortion (–126 dB THD+N at 1 kHz).
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 (±1.2 mV max over –40°C to 125°C): enables sub-0.1% error in 100 mV shunt-based current measurement. |
| Gain-Bandwidth Product | 10.6 MHz: allows stable closed-loop gain ≥10 at 1 MHz for anti-aliasing filter buffering before SAR ADCs. |
| Slew Rate | 32 V/µs: sustains full-scale 10 V step response in <0.65 µs, suitable for fast transient detection in power stage monitoring. |
| Input Voltage Noise | 7 nV/√Hz @ 1 kHz, 4.4 nV/√Hz broadband: preserves SNR in low-level sensor amplification (e.g., RTD, strain gauge). |
| Common-Mode Rejection | 115 dB (typical): rejects >100,000:1 of supply ripple and ground bounce in high-side current sense configurations. |
| Quiescent Current | 2.4 mA per amplifier: balances precision and power efficiency in always-on industrial I/O modules. |
Pinout & Package
OPA2992IDDFR is housed in an 8-pin SOT-23 (DDF) package measuring 2.9 mm × 2.8 mm, optimized for space-constrained PCB layouts in motor control and PLC analog modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of channel 1; rail-to-rail swing supports direct interface to ADC reference buffers or comparator thresholds. |
| 2 | IN1– | Inverting input of channel 1; accepts differential signals up to supply rails, enabling true high-side current sensing. |
| 3 | IN1+ | Noninverting input of channel 1; MUX-friendly design tolerates input transients beyond rails when clamped externally. |
| 4 | V– | Negative supply terminal; must be connected to system ground or negative rail; thermal pad (if present) ties to V– per TI layout guidance. |
| 5 | IN2+ | Noninverting input of channel 2; independent bias path allows simultaneous dual-sensor conditioning (e.g., voltage + current). |
| 6 | IN2– | Inverting input of channel 2; matched input impedance to IN1± ensures consistent CMRR across both channels. |
| 7 | OUT2 | Output of channel 2; fully independent output stage supports separate feedback networks for gain/phase tuning per channel. |
| 8 | V+ | Positive supply terminal; rated for 40 V absolute maximum, enabling direct connection to 36 V industrial bus rails. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization with single-supply 3.3 V or 24 V systems, eliminating level-shifters in sensor front-ends. |
| MUX-friendly/comparator inputs | Supports open-loop operation without phase reversal, allowing reuse as window comparators in fault-detection circuits. |
| Low offset drift (±0.25 µV/°C) | Reduces temperature-induced gain error to <0.5 µV over 0–100°C ambient, critical for uncalibrated field instrumentation. |
| High short-circuit current (±65 mA) | Drives heavy loads (e.g., 100 Ω transmission lines) or recovers rapidly from overload without latch-up. |
| Robust EMIRR performance | Rejects >60 dB of RF interference at 900 MHz, ensuring reliable operation near switching power supplies and motor inverters. |
Applications
| High-Side Current Sensing | ADC Driver for Multiplexed Data Acquisition |
|---|---|
Use Scenario: Monitoring phase current in 3-phase motor drives using shunt resistor between high-voltage DC bus and IGBT bridge. IC Role / Device Role / Timing Role: Precision difference amplifier referenced to V+ rail, rejecting common-mode voltage up to 40 V while resolving µV-level shunt drops. Use Value: Achieves ±0.2% full-scale accuracy over –40°C to 125°C without calibration, enabled by 115 dB CMRR and ±0.25 µV/°C drift. |
Use Scenario: Buffering multiple sensor outputs (thermocouples, pressure transducers) into a single SAR ADC via analog multiplexer. IC Role / Device Role / Timing Role: Dual-channel unity-gain buffer isolating mux capacitance from ADC input, with 0.65 µs settling to 0.1%. Use Value: Prevents crosstalk and settling errors during channel switching; 10.6 MHz GBW maintains bandwidth across all 8 channels. |
| Programmable Logic Controller (PLC) Analog Input Module | Power Delivery Reference Buffer (UPS/Server PSU) |
Use Scenario: Conditioning 4–20 mA loop signals and ±10 V industrial standards in modular PLC backplanes. IC Role / Device Role / Timing Role: Dual op amp providing isolated signal conditioning and active filtering before isolation amplifiers or ADCs. Use Value: 2.4 mA per channel quiescent current enables 16-channel density on thermally constrained carrier boards. |
Use Scenario: Stabilizing precision voltage references (e.g., REF5025) for digital PWM controllers in 48 V server PSUs. IC Role / Device Role / Timing Role: Low-noise, low-drift buffer driving DAC output or error amplifier inputs with minimal loading effect. Use Value: 4.4 nV/√Hz broadband noise prevents reference degradation, preserving <10 ppm output regulation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Lower offset (±2 µV max), higher IQ (1.3 mA/ch), 2 MHz GBW, SOIC-8 only | Better DC precision but insufficient bandwidth for >100 kHz closed-loop control loops | Select when ultra-low drift (<0.005 µV/°C) dominates over speed; avoid for fast current-loop feedback. |
| AD8638ARZ-REEL7 | Higher offset (±500 µV max), lower noise (4.2 nV/√Hz), 1.2 MHz GBW, SOIC-8 | Cost-optimized for non-critical DC accuracy; lacks rail-to-rail output swing | Choose for battery-powered I/O where 2.7 V operation and low IQ (0.9 mA/ch) outweigh precision needs. |
Compared with OPA2992IDDFR, OPA2189IDR trades bandwidth for superior DC accuracy and thermal stability, while AD8638ARZ-REEL7 sacrifices rail-to-rail output and speed for lower cost and power - making OPA2992IDDFR the optimal balance for 40 V industrial signal chains requiring both precision and speed.
Availability
OPA2992IDDFR is available at Aetrix Electronics and suitable for motor drive control modules, programmable logic controller (PLC) analog input cards, and high-voltage power delivery systems requiring stable component supply across extended temperature ranges (–40°C to 125°C).
Supply support for OPA2992IDDFR 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 high-reliability industrial op amps.
The OPAx992 product line was designed specifically for high-voltage industrial signal conditioning - delivering rail-to-rail operation, low drift, and robust EMI immunity in harsh environments like factory automation and energy infrastructure.
FAQ
What is the maximum supply voltage rating for OPA2992IDDFR?
The OPA2992IDDFR has an absolute maximum supply voltage of 42 V (V+ to V–), with recommended operation up to 40 V. This allows direct interfacing with 36 V industrial bus rails while maintaining 115 dB common-mode rejection and rail-to-rail output swing within 7 mV of the rails under no-load conditions - critical for high-side current sensing in motor drives.
Does OPA2992IDDFR support true rail-to-rail input common-mode range?
Yes, OPA2992IDDFR supports rail-to-rail input common-mode voltage from V– to V+, verified across its full operating temperature range (–40°C to 125°C). This enables accurate amplification of signals referenced to either supply rail - such as high-side shunt measurements - without external level-shifting circuitry, reducing component count and board area in PLC analog modules.
Can OPA2992IDDFR be used as a comparator in open-loop configuration?
Yes, OPA2992IDDFR is explicitly designed for MUX-friendly/comparator operation: its inputs tolerate differential voltages up to the supply rails, and it exhibits no phase reversal when overdriven. In open-loop mode, it delivers fast response (170 ns overload recovery) and clean transitions - making it suitable for fault-detection comparators in power stage protection circuits without requiring dedicated comparator ICs.
What is the typical input voltage noise density of OPA2992IDDFR at 10 kHz?
The typical input voltage noise density of OPA2992IDDFR is 4.4 nV/√Hz at 10 kHz, as specified in the official Texas Instruments datasheet (SBOSA10F, March 2024). This low broadband noise performance - combined with 7 nV/√Hz at 1 kHz - makes OPA2992IDDFR ideal for amplifying low-level sensor signals (e.g., strain gauges, RTDs) where signal integrity must be preserved across audio and control-loop frequencies.
Is OPA2992IDDFR qualified for operation at 125°C ambient temperature?
Yes, OPA2992IDDFR is fully specified and tested for continuous operation from –40°C to +125°C ambient temperature. Electrical parameters including offset voltage (±1.2 mV max), CMRR (100 dB min), and quiescent current (2.84 mA max) are guaranteed across this range - enabling deployment in under-hood automotive subsystems, industrial motor drives, and outdoor power infrastructure without derating.
OPA2992IDDFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
OPA2992IDDFR FAQ
1.How can I place an order for OPA2992IDDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2992IDDFR 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 OPA2992IDDFR reliable?
The price and inventory of OPA2992IDDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2992IDDFR is usually 5 days.
3.What payment methods are accepted for OPA2992IDDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2992IDDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2992IDDFR?
OPA2992IDDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2992IDDFR 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 OPA2992IDDFR?
For technical support, including OPA2992IDDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2992IDDFR requirements.
6.How does Aetrix verify that OPA2992IDDFR is sourced from the original manufacturer or authorized distributors?
All OPA2992IDDFR 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 OPA2992IDDFR meets industry standards.
7.What is the process for return or replacement of OPA2992IDDFR?
All OPA2992IDDFR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2992IDDFR, 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 OPA2992IDDFR part is unused and in its original packaging.
Return procedure for OPA2992IDDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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