My Inquiry
My Account
Texas Instruments OPA2991QDRQ1
- Part No.:
- OPA2991QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2991QDRQ1.pdf
- Description:
- IC OPAMP
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2991QDRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 automotive operational amplifier with rail-to-rail input and output, ±125µV offset voltage, 4.5MHz gain-bandwidth, and 21V/µs slew rate - deployed in high-side current sensing and ADAS signal conditioning circuits operating from –40°C to +125°C.
For engineers reviewing the OPA2991QDRQ1 datasheet, OPA2991QDRQ1 pinout, OPA2991QDRQ1 application, or OPA2991QDRQ1 equivalent, this page delivers verified electrical specs, package-validated pin functions, automotive-grade thermal data, and real-world use cases for HEV/EV motor control, infotainment sensor front-ends, and body electronics power monitoring.
Technical Context
The OPA2991QDRQ1 implements a MUX-friendly differential input stage with full rail-to-rail common-mode range (V– –0.1 V to V+ +0.1 V), enabling direct connection to high-voltage multiplexed sensor inputs without external level-shifting. Its dual-channel architecture shares a single V+ and V– supply pair while maintaining channel separation >107 dB at DC.
It integrates shutdown logic with 3 µs disable time and 8 µs enable time, supports capacitive loads up to 1 nF without external isolation, and delivers ±75 mA output current - critical for driving low-impedance feedback networks in current-sense amplifiers and active filters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 40 V (±1.35 V to ±20 V): supports 12 V/24 V/48 V automotive battery domains without external regulators. |
| Input Offset Voltage | ±125 µV typical: enables sub-0.1% error in 100 mΩ shunt-based current measurement at 10 A. |
| Offset Drift | ±0.3 µV/°C: ensures <1 µV total drift over –40°C to +125°C ambient, critical for precision temperature-invariant sensing. |
| Gain-Bandwidth Product | 4.5 MHz: allows stable closed-loop operation at G = 100 up to ~45 kHz for fast-response motor phase current feedback. |
| Slew Rate | 21 V/µs: supports 10 V step response in <0.5 µs, essential for transient detection in safety-critical ADAS preamplifiers. |
| Common-Mode Rejection | 130 dB at 40 V supply: rejects >3 million:1 of common-mode noise in high-side shunt configurations. |
| Quiescent Current | 560 µA per amplifier: enables dual-opamp signal conditioning in always-on vehicle modules with <1.2 mW total dissipation. |
Pinout & Package
OPA2991QDRQ1 is packaged in an 8-pin VSSOP (DGK) measuring 3 mm × 4.9 mm, optimized for space-constrained automotive PCB layouts and thermally coupled to the board via exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+ | Noninverting input, Channel 1 | Accepts rail-to-rail common-mode signals; used for positive-phase current sense or reference buffer. |
| IN1– | Inverting input, Channel 1 | Directly connects to shunt resistor low-side; supports MUX-compatible differential input up to supply rails. |
| OUT1 | Output, Channel 1 | Drives 10 kΩ load to within 10 mV of rails at 40 V supply; sustains ±75 mA short-circuit current. |
| V– | Negative power supply | Shared ground or negative rail for both amplifiers; must be decoupled with ≥100 nF ceramic capacitor. |
| OUT2 | Output, Channel 2 | Independent output stage; enables dual-path signal processing (e.g., current + voltage monitoring) on one die. |
| IN2– | Inverting input, Channel 2 | Used for secondary sensor path or comparator mode with open-loop configuration. |
| IN2+ | Noninverting input, Channel 2 | Supports independent biasing; enables differential-to-single-ended conversion without cross-talk. |
| V+ | Positive power supply | Highest potential rail; accepts up to 42 V absolute max; requires low-ESR bulk + local ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interface with 0–40 V sensor outputs and microcontroller ADCs without level-shifting circuitry. |
| MUX-friendly/comparator inputs | Operates linearly with differential inputs up to supply rails; usable as fast comparator with 400 ns overload recovery. |
| High capacitive load drive (1 nF) | Eliminates need for isolation resistors when driving long traces or EMI filters in motor control PCBs. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient, meeting automotive powertrain and ADAS requirements. |
| Robust EMIRR performance | Rejects >60 dB of RF interference up to 1 GHz, ensuring signal integrity in noisy inverter environments. |
Applications
| Infotainment Sensor Front-End | HEV/EV Motor Phase Current Sensing |
|---|---|
Use Scenario: Amplifying low-level bridge sensor outputs (e.g., pressure, temperature) in digital cluster displays. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with <1 µV/°C drift, rejecting battery ripple and display switching noise. Use Value: Maintains <0.05% linearity over full automotive temperature range without calibration. |
Use Scenario: High-side current sensing in 3-phase inverter legs using 100 µΩ shunts. IC Role / Device Role / Timing Role: Dual-channel difference amplifier + buffer, delivering isolated analog feedback to MCU ADC. Use Value: Enables 10-bit accurate current measurement at 20 kHz PWM frequencies with <2 µs group delay. |
| Body Electronics Power Monitoring | ADAS Radar Signal Conditioning |
Use Scenario: Real-time monitoring of lighting module current draw for fault detection and dimming control. IC Role / Device Role / Timing Role: Low-quiescent-current dual op-amp performing shunt amplification and reference buffering. Use Value: Achieves <100 µA system standby current while retaining fast overcurrent trip response (<5 µs). |
Use Scenario: Amplifying weak IF signals from 77 GHz radar receivers before digitization. IC Role / Device Role / Timing Role: Low-noise (10.8 nV/√Hz), high-PSRR (130 dB) gain block in analog beamforming chain. Use Value: Preserves SNR >72 dB across –40°C to +125°C, enabling reliable object detection at 200 m range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage, low-drift op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7332QMA/NOPB | Higher quiescent current (1.1 mA/channel), lower GBW (20 MHz), no AEC-Q100 Grade 1 rating. | Limited to non-safety-critical body electronics; not qualified for powertrain or ADAS. | Choose for cost-sensitive non-automotive industrial designs requiring higher speed but relaxed temp range. |
| TSV912IQ2T | Lower supply range (up to 16 V), higher offset (±1.5 mV), unqualified for automotive use. | Restricted to 12 V systems only; insufficient accuracy for <1% current sensing at 40 V bus. | Select only for consumer-grade 5 V/12 V applications where AEC-Q100 and rail-to-rail input are not required. |
Compared with LM7332QMA/NOPB and TSV912IQ2T, OPA2991QDRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 40 V operation, ±125 µV offset, and dual-channel rail-to-rail I/O - making it the only option qualified for HEV/EV inverter current sensing and ADAS front-end amplification.
Availability
OPA2991QDRQ1 is available at Aetrix Electronics and suitable for HEV/EV inverter control, ADAS radar signal chains, and automotive body electronics requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA2991QDRQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive-grade precision analog solutions.
The OPAx991-Q1 product line was designed specifically for high-voltage, high-reliability automotive signal conditioning - targeting current sensing, sensor interfacing, and powertrain control where DC precision, thermal stability, and EMI robustness are mandatory.
FAQ
What is the maximum supply voltage for OPA2991QDRQ1?
The OPA2991QDRQ1 supports an absolute maximum supply voltage of 42 V between V+ and V–, with recommended operation from 2.7 V to 40 V. This enables direct integration into 12 V, 24 V, and 48 V automotive battery domains without external regulation - a key requirement for HEV/EV powertrain modules where supply transients exceed 40 V during load dump.
Does OPA2991QDRQ1 support rail-to-rail input at full 40 V supply?
Yes, OPA2991QDRQ1 supports rail-to-rail input with a common-mode range from (V–) – 0.1 V to (V+) + 0.1 V across its full 2.7 V to 40 V supply range. This allows direct connection to high-side shunt resistors and multiplexed sensor arrays without external level-shifting, validated per datasheet Section 5.7 under VS = 40 V conditions.
What is the thermal resistance (RθJA) of OPA2991QDRQ1 in its VSSOP package?
The OPA2991QDRQ1 in DGK (VSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 176.5 °C/W, as specified in Section 5.5 of the datasheet. This value assumes standard JEDEC 2-layer board conditions and informs heatsinking requirements for continuous 560 µA/channel operation at +125°C ambient.
Can OPA2991QDRQ1 be used as a comparator?
Yes, OPA2991QDRQ1 is explicitly designed for MUX-friendly/comparator use: its input stage operates linearly with differential inputs up to the supply rails, and it achieves 400 ns overload recovery time. When used open-loop, it functions as a fast, precision comparator - confirmed in Section 1 Features and Section 6.3.1 of the datasheet.
Is OPA2991QDRQ1 qualified for automotive safety-critical systems?
OPA2991QDRQ1 is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with HBM ESD level 2A and CDM level C6. While not ASIL-certified as a standalone component, it meets foundational reliability requirements for passive safety and ADAS subsystems - commonly deployed in ISO 26262-compliant designs when integrated with appropriate system-level diagnostics and redundancy.
OPA2991QDRQ1 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:
- 21V/µs
- Gain Bandwidth Product:
- 4.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 125 µV
- Current - Supply:
- 560µA (x2 Channels)
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2991QDRQ1 FAQ
1.How can I place an order for OPA2991QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2991QDRQ1 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 OPA2991QDRQ1 reliable?
The price and inventory of OPA2991QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2991QDRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2991QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2991QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2991QDRQ1?
OPA2991QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2991QDRQ1 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 OPA2991QDRQ1?
For technical support, including OPA2991QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2991QDRQ1 requirements.
6.How does Aetrix verify that OPA2991QDRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2991QDRQ1 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 OPA2991QDRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2991QDRQ1?
All OPA2991QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2991QDRQ1, 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 OPA2991QDRQ1 part is unused and in its original packaging.
Return procedure for OPA2991QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2991QDRQ1 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
