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Texas Instruments OPA192QDGKRQ1
- Part No.:
- OPA192QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA192QDGKRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,840
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Product details
Overview
OPA192QDGKRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 automotive-qualified precision operational amplifier with rail-to-rail input/output, ±5 µV typical offset voltage, ±0.2 µV/°C drift, and 10 MHz gain-bandwidth. It operates from ±2.25 V to ±18 V (4.5 V to 36 V), delivers ±65 mA output current, and is used in high-voltage motor control feedback loops and traction inverter current sensing.
For engineers reviewing the OPA192QDGKRQ1 datasheet, OPA192QDGKRQ1 pinout, OPA192QDGKRQ1 application, or OPA192QDGKRQ1 equivalent, key selection considerations include ultra-low offset stability over temperature, e-trim™ package-level calibration, EMI-filtered inputs, and robust 1 nF capacitive-load drive capability in automotive-grade packaging.
Technical Context
The OPA192QDGKRQ1 employs e-trim™ technology-post-molding, package-level trimming of input offset and drift-to minimize errors induced by plastic molding stress and transistor mismatch. Its dual-input-stage architecture supports rail-to-rail common-mode range (V– – 0.1 V to V+ + 0.1 V) and differential input voltage up to the supply rails.
It features a high-slew-rate (20 V/µs), low-noise (5.5 nV/√Hz at 1 kHz) front-end with 140 dB CMRR and 120–140 dB open-loop gain, enabling precision closed-loop performance in high-gain, high-PSRR applications such as shunt-based current measurement in 400-V battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±5 µV typical (±75 µV max over –40°C to +125°C); enables <0.01% error in 100-mV full-scale current sense amplifiers |
| Offset Drift | ±0.2 µV/°C typical; ensures <1 µV total drift across automotive ambient range, critical for long-term calibration stability |
| Gain-Bandwidth | 10 MHz; supports stable unity-gain operation with fast settling (0.9 µs to 0.01% for 5-V step at ±18 V) |
| Slew Rate | 20 V/µs; maintains linearity for >10-Vpp signals at >100 kHz without slew-induced distortion |
| Supply Range | ±2.25 V to ±18 V (4.5 V to 36 V); compatible with 12-V, 24-V, and 48-V automotive subsystems and high-voltage traction inverters |
| Output Drive | ±65 mA short-circuit current; drives heavy loads including ADC reference buffers and active filters without external boost |
| Capacitive Load | 1 nF stable drive; eliminates need for isolation resistors in sensor interface and filter stages |
Pinout & Package
VSSOP-8 (DGK) package, 3.00 mm × 3.00 mm body size, thermally enhanced for automotive under-hood operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | High-impedance node (10¹³ Ω || 6.4 pF) accepting rail-to-rail common-mode signals; connects to shunt resistor high-side in current sensing |
| –IN (Pin 2) | Inverting input | Differential input node; used for feedback in transimpedance or difference amplifier configurations |
| OUT (Pin 6) | Amplifier output | Capable of ±65 mA sink/source; swings within 15 mV of rails under no load, supporting true RRO signal chain design |
| V+ (Pin 7) | Positive supply | Highest potential supply rail; must be ≥0.5 V above common-mode input for specified PSRR and CMRR |
| V– (Pin 4) | Negative supply | Lowest potential supply rail; allows operation down to –18 V, enabling bipolar signal conditioning in motor control |
| NC (Pins 1, 5, 8) | No internal connection | Unused pins; may be left floating or tied to ground for mechanical stability-no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±4 kV / CDM ±500 V ESD robustness-meets automotive functional safety requirements |
| e-trim™ offset calibration | Package-level trimming after plastic molding reduces thermal hysteresis and long-term drift, delivering ±5 µV offset without system-level recalibration |
| EMI/RFI filtered inputs | Integrated input filtering suppresses >100-MHz RF interference common in EV power electronics, preventing rectification-induced DC errors |
| Rail-to-rail input/output (RRO) | Supports full dynamic range utilization in single-supply 3.3-V microcontroller interfaces and high-side shunt monitoring with 0-V common-mode |
| 1 nF capacitive-load drive | Stable operation into large ceramic bypass caps or ADC input capacitance without phase compensation-reduces BOM count and layout complexity |
Applications
| Motor Control Feedback | Traction Inverter Current Sensing |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of PMSM motors in electric power steering and HVAC compressors. IC Role / Device Role / Timing Role: Precision signal conditioning of rotor position encoder signals and phase current feedback in real-time control loops. Use Value: ±0.2 µV/°C drift and 140 dB CMRR maintain <0.1% current measurement accuracy across under-hood temperature swings. |
Use Scenario: High-side shunt-based current measurement in 400-V battery-fed traction inverters. IC Role / Device Role / Timing Role: Low-offset, high-PSRR difference amplifier converting mV-level shunt voltage to isolated ADC input range. Use Value: ±5 µV offset enables sub-10-A resolution at 100-A full scale; 20 V/µs slew rate preserves fast transient fidelity during fault events. |
| On-Board Charger (OBC) Voltage Regulation | Precision Current Sensing |
Use Scenario: Isolated voltage feedback loop in bidirectional AC/DC converters for Level 2 EV charging. IC Role / Device Role / Timing Role: Secondary-side error amplifier driving optocoupler LED in isolated flyback or LLC regulation circuits. Use Value: 10 MHz GBW and 1.4 µs 0.01% settling ensure tight regulation bandwidth and fast transient response to grid harmonics. |
Use Scenario: Battery pack cell monitoring and state-of-charge (SoC) estimation in 12S–100S Li-ion systems. IC Role / Device Role / Timing Role: High-accuracy, low-drift amplifier for Kelvin-connected shunt resistors in multi-cell current sensing ICs. Use Value: ±75 µV max offset over temperature guarantees <0.05% full-scale error in 100-A sensing, meeting ISO 26262 ASIL-B diagnostic coverage targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA197QDGKRQ1 | Higher offset drift (±0.4 µV/°C), lower GBW (10 MHz same), but improved input voltage range (beyond rails) | Preferred for overvoltage-tolerant sensor front-ends where input transients exceed supply rails | Choose OPA197QDGKRQ1 only if rail-overvoltage protection is required; otherwise OPA192QDGKRQ1 offers superior dc precision. |
| AD8638ARZ-REEL7 | Lower quiescent current (0.9 mA vs 1.2 mA), but higher offset (±15 µV typ), no AEC-Q100 qualification | Targeted at industrial instrumentation-not automotive qualified; requires external qualification effort | Select AD8638ARZ-REEL7 only for cost-sensitive non-automotive designs where AEC-Q100 is not mandated. |
Compared with OPA197QDGKRQ1 and AD8638ARZ-REEL7, OPA192QDGKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, ±5 µV offset, and e-trim™ stability-making it the only drop-in solution for ASIL-B current sensing without derating or additional validation.
Availability
OPA192QDGKRQ1 is available at Aetrix Electronics and suitable for motor control feedback, traction inverter current sensing, and on-board charger voltage regulation requiring stable component supply across automotive production lifecycles.
Supply support for OPA192QDGKRQ1 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 signal conditioning and power management solutions.
The OPAx192-Q1 product line was designed specifically for high-precision, high-reliability automotive subsystems-including battery management, motor control, and charging infrastructure-where dc accuracy, thermal stability, and functional safety compliance are mandatory.
FAQ
What is the maximum operating temperature range for the OPA192QDGKRQ1?
The OPA192QDGKRQ1 is qualified per AEC-Q100 Grade 1 for continuous operation from –40°C to +125°C ambient temperature. Its thermal protection circuitry activates at 140°C junction temperature, and its ±0.2 µV/°C offset drift ensures minimal parametric shift across this full range-critical for under-hood automotive applications where ambient can exceed 105°C.
Does the OPA192QDGKRQ1 support single-supply operation?
Yes, the OPA192QDGKRQ1 supports true single-supply operation from 4.5 V to 36 V. Its rail-to-rail input stage accepts common-mode voltages from (V–) – 0.1 V to (V+) + 0.1 V, and its rail-to-rail output swings within 15 mV of both rails under no load-enabling direct interfacing with 3.3-V or 5-V microcontrollers without level-shifting circuitry.
How does e-trim™ technology improve long-term stability of the OPA192QDGKRQ1?
e-trim™ performs final offset and drift calibration at the package level after plastic molding, eliminating errors caused by post-trim mechanical stress. This results in ±5 µV typical offset with <±1 µV total drift over –40°C to +125°C-significantly better than die-level trimmed op amps-and eliminates the need for periodic system recalibration in automotive lifetime deployments.
Can the OPA192QDGKRQ1 drive a 1-nF capacitive load without oscillation?
Yes, the OPA192QDGKRQ1 is explicitly characterized for stable operation with up to 1 nF capacitive load, as confirmed in Figure 30 and Figure 31 of the SBOS850 datasheet. This capability allows direct connection to ADC input capacitors or large ceramic bypass networks without series isolation resistors-reducing noise, cost, and board space.
What is the purpose of the NC pins (1, 5, 8) on the OPA192QDGKRQ1 VSSOP-8 package?
Pins 1, 5, and 8 on the OPA192QDGKRQ1 DGK package have no internal connection and serve only mechanical or thermal functions. They may be left floating or grounded for PCB mechanical stability-but grounding them provides no electrical benefit and introduces no risk, as confirmed in the Pin Functions table of the SBOS850 datasheet.
OPA192QDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA192QDGKRQ1 FAQ
1.How can I place an order for OPA192QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA192QDGKRQ1 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 OPA192QDGKRQ1 reliable?
The price and inventory of OPA192QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA192QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA192QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA192QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA192QDGKRQ1?
OPA192QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA192QDGKRQ1 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 OPA192QDGKRQ1?
For technical support, including OPA192QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA192QDGKRQ1 requirements.
6.How does Aetrix verify that OPA192QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA192QDGKRQ1 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 OPA192QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA192QDGKRQ1?
All OPA192QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA192QDGKRQ1, 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 OPA192QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA192QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA192QDGKRQ1 Tags
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