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Texas Instruments OPA2180QDGKRQ1
- Part No.:
- OPA2180QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2180QDGKRQ1.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,264
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Product details
Overview
OPA2180QDGKRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 2 automotive-qualified zero-drift operational amplifier in an 8-pin VSSOP package. It delivers 75 μV max input offset voltage, 0.1 μV/°C drift, 10 nV/√Hz input voltage noise, rail-to-rail output swing within 18 mV of rails, and operates from ±2 V to ±18 V supplies. It serves precision signal conditioning in high-reliability automotive powertrain and battery monitoring systems.
For engineers reviewing the OPA2180QDGKRQ1 datasheet, OPA2180QDGKRQ1 pinout, OPA2180QDGKRQ1 application, or OPA2180QDGKRQ1 equivalent, key selection criteria include its automotive temperature range (–40°C to +105°C), low 1/f noise performance, EMI-filtered inputs, and verified phase-reversal protection for robust operation in noisy vehicle environments.
Technical Context
The OPA2180QDGKRQ1 employs TI's proprietary auto-zeroing architecture with chopper-stabilized front-end and notch filtering to achieve near-zero drift and ultra-low 0.1-Hz–10-Hz peak-to-peak noise (250 nV). Its dual-channel layout shares common supply pins (V+ on Pin 8, V– on Pin 4) while maintaining independent input/output paths per channel.
It features RFI-filtered inputs, 114 dB CMRR, 126 dB PSRR, and 120 dB open-loop gain - all specified over –40°C to +105°C - enabling stable DC-coupled measurement in high-common-mode-voltage automotive subsystems such as current sensing across shunt resistors or BMS cell voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV maximum - ensures ≤0.0075% error in 1-V full-scale precision current sensing at room temperature |
| Offset Drift | 0.1 μV/°C - guarantees <1 μV total drift over full –40°C to +105°C operating range, critical for thermal stability in engine bay applications |
| Input Voltage Noise | 10 nV/√Hz at 1 kHz - supports low-noise amplification of microvolt-level signals from precision shunts or thermocouples |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V single-supply) - compatible with 12-V and 24-V automotive battery architectures without external level-shifting |
| CMRR / PSRR | 114 dB / 126 dB - rejects >5 million-fold common-mode interference and supply ripple, essential for accurate measurements in noisy ECU environments |
| Quiescent Current | 525 μA maximum per amplifier - enables low-power operation in always-on BMS or OBC auxiliary monitoring circuits |
| Gain Bandwidth | 2 MHz - sufficient for closed-loop bandwidths up to ~150 kHz in unity-gain stable configurations for fast transient response |
Pinout & Package
OPA2180QDGKRQ1 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm with 0.65 mm pitch. The package supports automated optical inspection and offers thermal resistance RθJA = 159.3°C/W, suitable for compact automotive PCB layouts with moderate airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Output of Channel A - drives feedback network or next-stage load; rail-to-rail swing within 18 mV of supply rails under no load |
| 2 | –IN A | Inverting input of Channel A - used in transimpedance or differential configurations; includes EMI filtering and phase-reversal protection |
| 3 | +IN A | Noninverting input of Channel A - accepts high-impedance sensor signals; common-mode range extends to negative rail (V–) |
| 4 | V– | Negative power supply - shared by both amplifiers; must be decoupled with 0.1-μF ceramic capacitor close to pin |
| 5 | +IN B | Noninverting input of Channel B - electrically isolated from Channel A; enables dual-sensing paths (e.g., voltage + current) |
| 6 | –IN B | Inverting input of Channel B - identical EMI/phase-reversal specs as Channel A; supports independent feedback networks |
| 7 | OUT B | Output of Channel B - independently buffered; capable of driving 10-kΩ loads with ≤360 mV drop from rail at 125°C |
| 8 | V+ | Positive power supply - shared by both amplifiers; requires local 0.1-μF decoupling to maintain PSRR and stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for –40°C to +105°C ambient operation with HBM ±1500 V and CDM ±750 V ESD ratings - meets automotive functional safety baseline requirements |
| Zero-drift auto-zero architecture | 0.1 μV/°C max offset drift and 250 nVPP (0.1–10 Hz) - eliminates thermal-induced calibration drift in long-duration BMS cell monitoring |
| Rail-to-rail output with 18-mV headroom | Enables full dynamic range utilization in single-supply 3.3-V or 5-V microcontroller interfaces without level-shifting circuitry |
| EMI-filtered inputs | EMIRR >100 dB from 10 MHz to 1 GHz - suppresses RF interference from infotainment, Bluetooth, and cellular modules in integrated vehicle ECUs |
| Phase-reversal protection | Prevents output inversion when inputs exceed common-mode range - avoids catastrophic control loop errors in motor driver current sense feedback |
Applications
| Automotive Precision Current Sensing | Onboard Charger (OBC) Voltage Monitoring |
|---|---|
|
Use Scenario: High-side shunt-based current measurement in 400-V traction inverters with ±1% accuracy requirement over lifetime. IC Role / Device Role / Timing Role: Dual-channel OPA2180QDGKRQ1 configures one amp as precision difference amplifier for shunt voltage, second as reference buffer for ADC input. Use Value: 75 μV max offset and 0.1 μV/°C drift ensure <0.5% total error contribution across –40°C to +105°C, eliminating need for periodic recalibration. |
Use Scenario: Isolated DC-link voltage sensing in bidirectional OBCs using resistive divider + op-amp buffering before isolation amplifier. IC Role / Device Role / Timing Role: Single OPA2180QDGKRQ1 channel buffers high-impedance divider output; second channel conditions auxiliary bias rail monitor signal. Use Value: 114 dB CMRR rejects common-mode transients during switching events; rail-to-rail output ensures full 0–3.3 V ADC range utilization. |
| Battery Management System (BMS) Cell Voltage | Traction Inverter Phase Current Feedback |
|
Use Scenario: Accurate 2–4.5 V cell voltage acquisition in 96-cell EV battery packs with thermal gradients up to 40°C across module. IC Role / Device Role / Timing Role: OPA2180QDGKRQ1 channels condition multiplexed cell voltages prior to SAR ADC sampling at 1 kHz. Use Value: Low 1/f noise and 10 nV/√Hz broadband noise preserve SNR >100 dB for 16-bit resolution; 525 μA quiescent current minimizes self-heating error. |
Use Scenario: Closed-loop current regulation in SiC-based traction inverters where fast, distortion-free feedback prevents shoot-through faults. IC Role / Device Role / Timing Role: OPA2180QDGKRQ1 amplifies isolated current transformer output with G = 10, feeding into PWM controller comparator input. Use Value: 2 MHz GBW and 0.8 V/μs slew rate support <100-ns propagation delay; phase-reversal protection prevents false overcurrent trips during bus transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188QDGKRQ1 | Lower 25 μV max offset and 0.085 μV/°C drift, but same 2 MHz GBW and VSSOP-8 package | Better suited for ultra-high-precision BMS cell balancing where sub-0.1% gain error is mandatory | Select OPA2188QDGKRQ1 when offset drift budget is tighter than 0.1 μV/°C; otherwise OPA2180QDGKRQ1 offers optimal cost/performance balance |
| AD8629ARZ-REEL7 | Single-supply only (2.7–5.5 V), 1 μV max offset, 0.01 μV/°C drift, SOIC-8 package - not automotive qualified | Limited to low-voltage auxiliary monitoring (e.g., cabin sensors); lacks AEC-Q100 certification and bipolar supply capability | Use AD8629ARZ-REEL7 only in non-safety-critical 3.3-V domains; OPA2180QDGKRQ1 remains required for ISO 26262-compliant powertrain functions |
Compared with OPA2188QDGKRQ1 and AD8629ARZ-REEL7, OPA2180QDGKRQ1 uniquely balances AEC-Q100 Grade 2 compliance, bipolar supply flexibility (±2 V to ±18 V), and proven EMI robustness - making it the default choice for production automotive signal conditioning where reliability and thermal stability outweigh marginal offset improvements.
Availability
OPA2180QDGKRQ1 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 OPA2180QDGKRQ1 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 automotive IC design expertise and rigorous AEC-Q100 validation infrastructure.
The OPAx180-Q1 family was engineered specifically for high-accuracy, low-drift signal conditioning in automotive powertrain and energy storage systems - emphasizing thermal stability, EMI resilience, and functional safety readiness from initial silicon characterization.
FAQ
What is the operating temperature range for OPA2180QDGKRQ1?
The OPA2180QDGKRQ1 is qualified per AEC-Q100 Grade 2 with an ambient operating temperature range of –40°C to +105°C. This specification is validated across all electrical parameters including offset voltage, drift, CMRR, and PSRR - ensuring reliable performance in under-hood automotive environments where thermal cycling is severe.
Does OPA2180QDGKRQ1 support single-supply operation?
Yes, OPA2180QDGKRQ1 supports true single-supply operation from 4 V to 36 V. Its input common-mode range includes the negative rail (V–), and its rail-to-rail output swings within 18 mV of either supply rail under no load - enabling direct interfacing with 3.3-V or 5-V microcontrollers without level-shifting circuitry.
How does the EMI filtering in OPA2180QDGKRQ1 improve system robustness?
OPA2180QDGKRQ1 integrates on-die RFI filters on both inputs, delivering >100 dB electromagnetic interference rejection ratio (EMIRR) from 10 MHz to 1 GHz. This suppresses coupling from wireless modules and switching power supplies - preventing erroneous readings in BMS voltage monitors or OBC feedback loops exposed to high-frequency noise.
Is OPA2180QDGKRQ1 pin-compatible with other devices in the OPAx180-Q1 family?
Yes, OPA2180QDGKRQ1 shares identical 8-pin VSSOP (DGK) pinout with OPA180QDGKRQ1 and OPA4180QDGKRQ1. However, channel count and temperature grade differ: OPA180QDGKRQ1 is single-channel Grade 1 (–40°C to +125°C), while OPA2180QDGKRQ1 is dual-channel Grade 2 (–40°C to +105°C).
What decoupling is recommended for OPA2180QDGKRQ1 power pins?
Texas Instruments specifies 0.1-μF ceramic capacitors placed as close as possible to both V+ (Pin 8) and V– (Pin 4) pins of OPA2180QDGKRQ1. These capacitors must be X7R or better dielectric with low ESL, and routed with short, wide traces to maintain PSRR >120 dB and prevent oscillation under high-frequency load transients.
OPA2180QDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- 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:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 18 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2180QDGKRQ1 FAQ
1.How can I place an order for OPA2180QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2180QDGKRQ1 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 OPA2180QDGKRQ1 reliable?
The price and inventory of OPA2180QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2180QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2180QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2180QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2180QDGKRQ1?
OPA2180QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2180QDGKRQ1 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 OPA2180QDGKRQ1?
For technical support, including OPA2180QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2180QDGKRQ1 requirements.
6.How does Aetrix verify that OPA2180QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2180QDGKRQ1 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 OPA2180QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2180QDGKRQ1?
All OPA2180QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2180QDGKRQ1, 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 OPA2180QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA2180QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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