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Texas Instruments OPA180QDGKRQ1
- Part No.:
- OPA180QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA180QDGKRQ1.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,045
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Product details
Overview
OPA180QDGKRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 qualified zero-drift operational amplifier for automotive precision signal conditioning. It delivers 75 μV max input offset voltage, 0.1 μV/°C drift over –40°C to +125°C, and 10 nV/√Hz input voltage noise density at 1 kHz - enabling high-accuracy current sensing in onboard chargers and battery management systems.
For engineers reviewing the OPA180QDGKRQ1 datasheet, OPA180QDGKRQ1 pinout, OPA180QDGKRQ1 application, or OPA180QDGKRQ1 equivalent, key selection criteria include rail-to-rail output swing (≤360 mV from rail), PSRR of 126 dB, CMRR of 114 dB, and VSSOP-8 packaging compatible with space-constrained automotive PCB layouts.
Technical Context
The OPA180QDGKRQ1 uses TI's proprietary auto-zeroing architecture with dual chopper stages and notch filtering to cancel input offset and its drift over time and temperature. Its input stage includes RFI-filtered inputs and supports common-mode voltage down to the negative rail, enabling direct sensing of low-side shunt voltages.
It operates from ±2 V to ±18 V (or 4 V to 36 V single supply), draws ≤525 μA quiescent current per amplifier, and maintains 120 dB open-loop gain and 2 MHz gain bandwidth - balancing precision, speed, and power efficiency for closed-loop control loops in traction inverters and motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV maximum - ensures ≤0.0075% error in 1-V full-scale current-sense outputs at room temperature. |
| Drift | 0.1 μV/°C - guarantees <0.0125 μV total drift across –40°C to +125°C ambient, critical for BMS thermal stability. |
| Noise Density | 10 nV/√Hz at 1 kHz - enables resolution of sub-100-μV signals in noisy automotive environments. |
| PSRR / CMRR | 126 dB / 114 dB - rejects >2 million-fold and >500,000-fold supply/common-mode interference, respectively. |
| Output Swing | ≤360 mV from rail (RL = 10 kΩ) - supports true rail-to-rail operation near supply limits for maximum dynamic range. |
| Supply Range | ±2 V to ±18 V - accommodates 12-V and 24-V automotive battery rails with headroom for transients. |
| Quiescent Current | 525 μA max - allows integration into always-on monitoring circuits without excessive power penalty. |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thermally enhanced for automotive under-hood operation; 0.65-mm lead pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No connection (NC) | Internally unconnected - must remain floating or grounded per layout guidelines; no routing required. |
| 2 | Inverting input (–IN) | Differential input node for feedback networks; supports low-impedance shunt sensing with RFI filtering. |
| 3 | Noninverting input (+IN) | High-impedance input referenced to system ground or common-mode bias; includes EMI rejection circuitry. |
| 4 | Negative power supply (V–) | Reference return for bipolar operation; accepts ground or negative rail - input common-mode extends to this pin. |
| 6 | Output (OUT) | Class-AB rail-to-rail output capable of driving ≥10-kΩ loads with <0.01% THD+N at 1 kHz. |
| 7 | Positive power supply (V+) | Main supply rail; decoupling capacitor (0.1 μF) required within 2 mm for stable high-frequency PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zeroing with dual chopper stages eliminates long-term offset drift - essential for decade-long automotive system calibration integrity. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±1500 V and CDM ±750 V ESD robustness - meets ISO 26262 ASIL-B readiness requirements. |
| Rail-to-rail output + negative-rail input | Output swings within 360 mV of either supply; input common-mode includes V– - enables direct low-side current sensing without level-shifting. |
| EMI filtered inputs | Integrated RF rejection up to 6 GHz - suppresses interference from Bluetooth, LTE, and switching converters in dense automotive ECUs. |
| No phase reversal | Input overdrive beyond common-mode range forces output to rail instead of inverting - prevents catastrophic control loop instability in motor fault conditions. |
Applications
| Automotive Precision Current Measurements | Onboard Chargers (OBC) |
|---|---|
Use Scenario: High-side and low-side shunt-based current monitoring in 400-V/800-V EV charging stacks. IC Role / Device Role / Timing Role: Precision gain-stage amplifier conditioning mV-level shunt voltage with minimal offset drift over thermal cycling. Use Value: Enables ±0.5% current measurement accuracy across –40°C to +125°C without recalibration - meeting ISO 15118 communication protocol tolerances. | Use Scenario: Isolated voltage and current feedback in bidirectional AC/DC and DC/DC converter stages. IC Role / Device Role / Timing Role: Error amplifier in secondary-side regulation loops, rejecting ripple from 100-kHz+ switching noise. Use Value: 126-dB PSRR and 10-nV/√Hz noise ensure stable regulation under wide-input-voltage transients and EMI-rich cabin environments. |
| Battery Management Systems (BMS) | Traction Inverters |
Use Scenario: Cell voltage and pack current acquisition in modular high-voltage battery packs (up to 900 V). IC Role / Device Role / Timing Role: Front-end signal conditioner for ADC inputs, providing galvanically isolated analog front ends via sigma-delta modulators. Use Value: 0.1-μV/°C drift and 114-dB CMRR maintain <1-mV measurement error across full thermal operating range - critical for state-of-charge estimation. | Use Scenario: Gate driver biasing, current sensing, and DC-link voltage monitoring in IGBT/SiC inverter modules. IC Role / Device Role / Timing Role: High-stability comparator reference buffer and analog feedback amplifier in torque-control loops. Use Value: 2-MHz GBW and 0.8-V/μs slew rate support fast transient response in field-oriented control (FOC) algorithms while maintaining DC precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA188QDGKRQ1 | Lower 25-μV max offset and 0.085-μV/°C drift; same VSSOP-8 package and AEC-Q100 Grade 1 rating. | Better suited for ultra-high-precision applications like reference buffers or strain-gauge interfaces where <10-μV residual error is mandatory. | Select OPA188QDGKRQ1 when offset drift budget is tighter than 0.1 μV/°C and cost premium is acceptable. |
| OPA2180QDGKRQ1 | Dual-channel version in identical VSSOP-8 package; shares same 75-μV offset, 0.1-μV/°C drift, and 10-nV/√Hz noise specs. | Used where space-constrained dual-signal paths exist - e.g., simultaneous voltage and current sensing in compact OBC modules. | Choose OPA2180QDGKRQ1 only when two matched amplifiers are needed on one die to minimize inter-channel thermal gradients. |
Compared with OPA180QDGKRQ1, OPA188QDGKRQ1 improves DC precision at higher cost, while OPA2180QDGKRQ1 offers channel doubling without sacrificing spec fidelity - making OPA180QDGKRQ1 optimal for single-channel, cost-sensitive, thermally demanding automotive signal chains.
Availability
OPA180QDGKRQ1 is available at Aetrix Electronics and suitable for automotive precision current measurements, onboard chargers (OBC), and battery management systems (BMS) requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA180QDGKRQ1 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 OPAx180-Q1 product line was engineered specifically for high-reliability automotive signal conditioning - targeting precision current sensing, motor control feedback, and battery monitoring where zero-drift performance and AEC-Q100 compliance are non-negotiable.
FAQ
What automotive temperature grade does the OPA180QDGKRQ1 support?
The OPA180QDGKRQ1 is AEC-Q100 qualified as Grade 1, rated for continuous operation from –40°C to +125°C ambient temperature. This specification is validated across all electrical parameters including offset voltage drift, PSRR, and CMRR - ensuring reliability in engine bay and powertrain control units where thermal stress is extreme.
Does the OPA180QDGKRQ1 require external compensation for stability?
No, the OPA180QDGKRQ1 is unity-gain stable and requires no external compensation components under standard conditions. However, when driving capacitive loads >100 pF, a series output resistor (e.g., 25–50 Ω) is recommended to maintain phase margin - as confirmed by small-signal overshoot vs. capacitive load data in the official SBOS861A datasheet.
How does the OPA180QDGKRQ1 handle input overvoltage conditions?
The OPA180QDGKRQ1 includes integrated ESD protection diodes (HBM ±1500 V, CDM ±750 V) that also provide limited in-circuit input overdrive protection. As long as input current is restricted to ≤10 mA - typically achieved with a series resistor - the device safely clamps overvoltage without latch-up or parametric shift, preserving functionality during battery jump-start events.
Can the OPA180QDGKRQ1 be used with single-supply operation?
Yes, the OPA180QDGKRQ1 supports true single-supply operation from 4 V to 36 V. Its input common-mode range extends to the negative rail (V–), and its rail-to-rail output swings within 360 mV of both supply rails - enabling direct interfacing with microcontroller ADCs and digital isolators without level-shifting circuitry in 12-V or 24-V automotive systems.
What is the maximum capacitive load the OPA180QDGKRQ1 can drive without oscillation?
The OPA180QDGKRQ1 remains stable driving up to 100 pF directly. For loads exceeding 100 pF - such as long PCB traces or ADC input capacitance - TI recommends adding a 25–50 Ω isolation resistor in series with the output. This configuration maintains ≥45° phase margin, as verified by small-signal step response and overshoot testing in the SBOS861A datasheet Figure 10–11.
OPA180QDGKRQ1 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:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 450µA
- Current - Output / Channel:
- 18 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
OPA180QDGKRQ1 FAQ
1.How can I place an order for OPA180QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA180QDGKRQ1 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 OPA180QDGKRQ1 reliable?
The price and inventory of OPA180QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA180QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA180QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA180QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA180QDGKRQ1?
OPA180QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA180QDGKRQ1 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 OPA180QDGKRQ1?
For technical support, including OPA180QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA180QDGKRQ1 requirements.
6.How does Aetrix verify that OPA180QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA180QDGKRQ1 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 OPA180QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA180QDGKRQ1?
All OPA180QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA180QDGKRQ1, 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 OPA180QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA180QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA180QDGKRQ1 Tags
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