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Texas Instruments OPA992QDCKRQ1
- Part No.:
- OPA992QDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA992QDCKRQ1.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
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Product details
Overview
OPA992QDCKRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 automotive operational amplifier with rail-to-rail input and output, ±210 µV max offset voltage, 10.6 MHz gain-bandwidth, and 32 V/µs slew rate-designed for high-side current sensing and eCall signal conditioning in 40V HEV/EV power systems.
For engineers reviewing the OPA992QDCKRQ1 datasheet, OPA992QDCKRQ1 pinout, OPA992QDCKRQ1 application, or OPA992QDCKRQ1 equivalent, this page delivers verified electrical specs, SC70-5 package details, automotive-grade thermal performance (–40°C to +125°C), and validated alternatives for traction inverter and OBC feedback loop designs.
Technical Context
The OPA992QDCKRQ1 implements a patented MUX-friendly front-end architecture enabling full 40V differential input swing without clamping diodes-eliminating settling distortion in multiplexed sensor interfaces. Its dual-input-stage design (NCH/PCH) supports rail-to-rail common-mode range from V– to V+, with ±65 mA short-circuit output current.
It features unity-gain stability with 64° phase margin into 20 pF loads, robust EMIRR >100 dB at 100 MHz, and low 4.4 nV/√Hz broadband noise at 10 kHz-enabling precision amplification in noisy automotive powertrain environments without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7V to 40V (±1.35V to ±20V): supports direct connection to 12V/24V/48V automotive rails without LDO pre-regulation |
| Offset Voltage | ±210 µV (max): enables <0.1% error in 200 mV shunt-based current sensing at room temperature |
| Offset Drift | ±0.25 µV/°C (typ): ensures <±0.5 mV total drift over –40°C to +125°C operating range |
| Gain-Bandwidth | 10.6 MHz: supports closed-loop bandwidth >1 MHz at G = 10 for fast transient response in DC/DC control loops |
| Slew Rate | 32 V/µs: delivers full-scale 10V step in <0.32 µs, critical for undistorted PWM feedback capture |
| CMRR | 115 dB (min at 40V): rejects >3.16 MV/V common-mode interference in high-side sensing configurations |
| Input Bias Current | ±10 pA (max): minimizes voltage error across high-impedance sensor bridges or filter networks |
| Quiescent Current | 2.48 mA per amplifier (typ at 25°C): balances performance and power in always-on telematics modules |
Pinout & Package
OPA992QDCKRQ1 is packaged in a 5-pin SC70 (DCK) footprint measuring 2.0 mm × 2.1 mm, optimized for space-constrained automotive PCBs with thermal resistance RθJA = 202.4°C/W and RθJB = 51.6°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Noninverting input | Accepts signals from V– to V+; supports comparator operation with open-loop use and MUX-friendly differential inputs up to supply rail |
| IN– | Inverting input | Full rail-to-rail common-mode range; no input clamping diodes enable 40V differential tolerance |
| OUT | Amplifier output | Rail-to-rail swing: within 7 mV of rails at no load, 48–60 mV at 10 kΩ load (40V supply) |
| V– | Negative supply | Lowest potential node; supports single-supply (2.7V+) or split-supply (±1.35V+) operation |
| V+ | Positive supply | Highest potential node; withstands 42V absolute max; powers internal bias and output stage |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly inputs | Full 40V differential input capability eliminates settling delay in multiplexed battery monitoring systems |
| Rail-to-rail I/O | Enables direct interface with ADCs and microcontrollers operating at same supply without level-shifting |
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C ambient operation with HBM ESD Level 2A and CDM Level C6 |
| Low 1/f noise | 2.77 µVPP (0.1–10 Hz): preserves signal integrity in low-frequency current sensing and eCall voice pre-amplification |
| High short-circuit current | ±65 mA output drive supports active filtering and direct driving of small capacitive loads in TCU analog front ends |
| EMIRR performance | >100 dB rejection at 100 MHz: mitigates RF interference from infotainment transceivers and wireless charging coils |
Applications
| Automotive Head Unit | Emergency Call (eCall) |
|---|---|
Use Scenario: Amplifying microphone signals and equalizing audio paths in infotainment head units exposed to engine vibration and thermal cycling. IC Role / Device Role / Timing Role: Low-noise preamplifier with rail-to-rail output driving 1.8V/3.3V ADCs; operates continuously across –40°C to +85°C cabin environment. Use Value: 7 nV/√Hz input noise at 1 kHz and ±0.25 µV/°C drift ensure consistent SNR and minimal calibration drift over vehicle lifetime. | Use Scenario: Conditioning analog voice and crash sensor signals in emergency call modules requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Precision buffer and gain stage for piezoelectric crash sensors and MEMS microphones; supports fail-safe diagnostics via open-loop comparator mode. Use Value: MUX-friendly inputs tolerate fast-rising crash pulses up to 40V differential without distortion; AEC-Q100 qualification validates reliability under shock/vibration stress. |
| Traction Inverter | HEV/EV On-Board Charger (OBC) |
Use Scenario: High-side current sensing in IGBT/SiC gate driver feedback loops for motor phase current measurement. IC Role / Device Role / Timing Role: Bidirectional current sense amplifier with 115 dB CMRR rejecting 400V bus noise; operates at 125°C junction temperature. Use Value: ±210 µV offset and 32 V/µs slew rate enable accurate <1% error current reconstruction during 10 kHz PWM switching transitions. | Use Scenario: Voltage and current regulation feedback in bidirectional AC/DC and DC/DC stages of 6.6 kW OBCs. IC Role / Device Role / Timing Role: Error amplifier in isolated flyback and LLC control loops; interfaces with optocouplers and digital controllers. Use Value: 10.6 MHz GBW and unity-gain stability allow >500 kHz loop bandwidth for fast dynamic response to grid voltage sags and load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA991QDBVRQ1 | Lower 3.2 MHz GBW, 10 V/µs slew rate, same 40V supply and AEC-Q100 Grade 1 rating | Better suited for cost-sensitive, lower-bandwidth applications like HVAC sensor conditioning where 1 MHz loop bandwidth suffices | Select when system bandwidth requirements are ≤3 MHz and quiescent current <2.2 mA is prioritized |
| LM7332QMA/NOPB | Higher 20 MHz GBW but only 2.7V–36V supply, non-AEC-Q100, higher 1.2 mV offset, 12 nV/√Hz noise | Applicable in non-automotive industrial power supplies where AEC-Q100 is not mandated | Choose only for non-automotive designs needing wider bandwidth but tolerating higher offset and noise |
Compared with OPA991QDBVRQ1, OPA992QDCKRQ1 delivers 3.3× higher bandwidth and 3.2× faster slew rate for demanding OBC and traction inverter control; versus LM7332QMA/NOPB, it provides certified automotive reliability, lower noise, and tighter DC precision at the cost of slightly lower maximum supply voltage.
Availability
OPA992QDCKRQ1 is available at Aetrix Electronics and suitable for automotive head unit audio processing, traction inverter current sensing, and HEV/EV on-board charger feedback loops requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA992QDCKRQ1 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 deep expertise in automotive-grade IC design and manufacturing.
The OPAx992-Q1 product line was engineered specifically for high-voltage, high-precision signal conditioning in automotive powertrain and safety-critical systems-including eCall, TCU, and EV charging infrastructure-where DC accuracy, noise immunity, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum supply voltage rating for OPA992QDCKRQ1?
The OPA992QDCKRQ1 has an absolute maximum supply voltage of 42 V (V+ to V–), with recommended operating range from 2.7 V to 40 V. This allows direct integration into 12 V, 24 V, and 48 V automotive subsystems without external regulators, while maintaining full rail-to-rail input/output functionality across the entire range. Operation beyond 40 V is not advised for sustained use.
Does OPA992QDCKRQ1 support comparator operation in open-loop configuration?
Yes, OPA992QDCKRQ1 supports reliable open-loop comparator operation due to its MUX-friendly inputs, which tolerate differential voltages up to 40 V and common-mode voltages from V– to V+. Unlike conventional op amps, it lacks input clamping diodes-eliminating false triggering and settling delays during fast-rising input transitions. This makes OPA992QDCKRQ1 suitable for window comparators and fault-detection circuits in automotive ECUs.
What is the thermal resistance of OPA992QDCKRQ1 in its SC70-5 package?
For the OPA992QDCKRQ1 in the SC70-5 (DCK) package, the junction-to-ambient thermal resistance (RθJA) is 202.4°C/W, and junction-to-board (RθJB) is 51.6°C/W. These values are measured per JEDEC JESD51 standards and confirm suitability for thermally constrained automotive modules operating at up to +125°C ambient, provided adequate PCB copper area is allocated beneath the exposed pad (if present) or adjacent traces.
How does the EMIRR performance of OPA992QDCKRQ1 benefit automotive designs?
OPA992QDCKRQ1 achieves >100 dB electromagnetic interference rejection ratio (EMIRR) at 100 MHz, directly addressing RF susceptibility in modern vehicles with Bluetooth, Wi-Fi, and wireless charging. This high EMIRR prevents corruption of sensitive analog signals-such as those from current shunts or crash sensors-by nearby transmitters, eliminating need for additional shielding or ferrite filters and simplifying layout in compact telematics control units.
Can OPA992QDCKRQ1 drive capacitive loads without instability?
Yes, OPA992QDCKRQ1 is unity-gain stable and maintains 64° phase margin with 20 pF capacitive load, supporting direct connection to ADC input capacitors or long PCB traces. For loads >100 pF, a series isolation resistor (RISO ≥ 50 Ω) is recommended to suppress overshoot-verified in Figure 5-31 of the datasheet. This capability simplifies anti-aliasing filter design in automotive data acquisition systems using OPA992QDCKRQ1.
OPA992QDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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:
- 2.48mA
- 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:
- SC-70-5
OPA992QDCKRQ1 FAQ
1.How can I place an order for OPA992QDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA992QDCKRQ1 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 OPA992QDCKRQ1 reliable?
The price and inventory of OPA992QDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA992QDCKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA992QDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA992QDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA992QDCKRQ1?
OPA992QDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA992QDCKRQ1 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 OPA992QDCKRQ1?
For technical support, including OPA992QDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA992QDCKRQ1 requirements.
6.How does Aetrix verify that OPA992QDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA992QDCKRQ1 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 OPA992QDCKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA992QDCKRQ1?
All OPA992QDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA992QDCKRQ1, 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 OPA992QDCKRQ1 part is unused and in its original packaging.
Return procedure for OPA992QDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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