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Texas Instruments OPA197QDGKRQ1
- Part No.:
- OPA197QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA197QDGKRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,668
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Product details
Overview
OPA197QDGKRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 automotive operational amplifier with rail-to-rail input/output, ±250 µV max offset voltage, ±0.2 µV/°C max drift, 10 MHz gain-bandwidth, and 20 V/µs slew rate. It operates from ±2.25 V to ±18 V (4.5 V to 36 V) and delivers ±65 mA output current for precision signal conditioning in high-voltage motor control and battery management systems.
For engineers reviewing the OPA197QDGKRQ1 datasheet, OPA197QDGKRQ1 pinout, OPA197QDGKRQ1 application, or OPA197QDGKRQ1 equivalent, key selection criteria include its e-trim™-enabled ultra-low offset stability over temperature, EMI-filtered inputs, differential input voltage range to supply rails, and robust 1 nF capacitive load drive capability in the 8-pin VSSOP package.
Technical Context
The OPA197QDGKRQ1 implements proprietary e-trim™ technology-package-level trimming performed post-molding-to minimize input transistor mismatch and package-induced offset errors. This enables exceptional DC precision without laser trimming or wafer-level calibration.
Its architecture supports rail-to-rail operation across full common-mode range (V– – 0.1 V to V+ + 0.1 V), delivers 140 dB CMRR at mid-supply, and maintains stable unity-gain performance into 1 nF loads without external compensation-enabling direct interface with ADC drivers, current-sense amplifiers, and high-side sensing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage (max) | ±250 µV - ensures ≤0.5 mV error in 2 V full-scale 16-bit ADC front-end at room temperature |
| Offset Drift (max) | ±0.2 µV/°C - guarantees <1 µV total drift over –40°C to +125°C operating range |
| Gain-Bandwidth | 10 MHz - supports closed-loop gain ≥10 up to 1 MHz with phase margin >60° |
| Slew Rate | 20 V/µs - enables clean 10-V step response in ≤0.5 µs for fast transient detection |
| Supply Range | ±2.25 V to ±18 V - compatible with 5 V, 12 V, 24 V, and 48 V automotive subsystems |
| Output Current | ±65 mA - drives 100 Ω loads directly, eliminating need for external buffer stages |
| Input Bias Current | ±5 pA - minimizes voltage error in high-impedance sensor interfaces (e.g., thermocouples, pH electrodes) |
Pinout & Package
The OPA197QDGKRQ1 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, optimized for space-constrained automotive PCB layouts and thermal performance (RθJA = 180.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | High-impedance node accepting signals from sensors or DACs; supports rail-to-rail common-mode range |
| –IN (Pin 2) | Inverting input | Feedback node for precision gain-setting; matched to +IN for low input offset |
| OUT (Pin 6) | Amplifier output | Capable of ±65 mA sink/source; drives 1 nF loads directly without oscillation |
| V+ (Pin 7) | Positive supply | Highest potential rail; accepts up to +36 V in single-supply mode |
| V– (Pin 4) | Negative supply | Lowest potential rail; accepts down to –18 V in dual-supply mode |
| NC (Pins 1, 5, 8) | No internal connection | Unused terminals; may be left floating or tied to ground for mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ package-level offset calibration | Eliminates post-assembly drift due to package stress; achieves ±250 µV max over full automotive temperature range |
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage systems (e.g., 5 V microcontroller interfaces) |
| Differential input voltage range to supply rail | Accepts inputs beyond rails by 0.2 V-critical for overvoltage-tolerant current-sense amplifier topologies |
| EMI/RFI filtered inputs | Integrated RF suppression reduces susceptibility to 100 MHz–1 GHz noise in noisy automotive environments |
| High capacitive load drive (1 nF) | Stable operation into long traces, connectors, or ADC input capacitance without isolation resistors |
Applications
| Inverter and Motor Control | DC/DC Converter |
|---|---|
Use Scenario: Closed-loop torque control in 48 V traction inverters using shunt-based current sensing. IC Role / Device Role / Timing Role: Precision current-sense amplifier with rail-to-rail input enabling bidirectional measurement across ±100 mV shunt. Use Value: ±250 µV offset ensures <0.1% full-scale error at 100 A, improving motor efficiency and thermal safety margins. | Use Scenario: Voltage feedback loop in isolated 1 kW automotive DC/DC converter for ADAS domain controller power supply. IC Role / Device Role / Timing Role: Error amplifier in secondary-side regulation circuit, comparing isolated output to precision reference. Use Value: 10 MHz GBW and 20 V/µs slew rate enable fast transient response to load steps, maintaining ±1% output regulation under 10 A/µs load changes. |
| On-board (OBC) and Wireless Charger | Battery Management System (BMS) |
Use Scenario: Isolated voltage monitoring of primary-side bus in 11 kW on-board charger during AC-DC conversion. IC Role / Device Role / Timing Role: High-side differential amplifier conditioning isolated sense signals before digitization. Use Value: Differential input range to rail allows direct interface with isolated gate drivers, reducing component count vs. level-shifting solutions. | Use Scenario: Cell voltage monitoring in 12S Li-ion BMS for EV powertrain, where precision and long-term stability are critical. IC Role / Device Role / Timing Role: Low-drift buffer for multiplexed cell voltage acquisition, minimizing leakage-induced measurement drift. Use Value: ±5 pA input bias current prevents >1 µV error in 1 GΩ RC filter networks used for anti-aliasing, preserving 16-bit ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7332QMA/NOPB | Higher quiescent current (2.3 mA vs. 1 mA); lower CMRR (114 dB vs. 140 dB); no e-trim™ | Less suitable for low-power always-on BMS monitoring; reduced DC accuracy in wide-temp automotive use | Consider only if higher output current (±100 mA) is required and offset drift tolerance >±2 µV/°C is acceptable |
| AD8638ARZ-REEL7 | Lower bandwidth (1.3 MHz vs. 10 MHz); no rail-to-rail output; higher offset drift (±2.5 µV/°C) | Not viable for fast-settling motor control loops or high-speed ADC drivers | Select only for ultra-low-offset (<5 µV typ.) DC-coupled sensor interfaces where speed is secondary |
Compared with LM7332QMA/NOPB and AD8638ARZ-REEL7, the OPA197QDGKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, e-trim™-guaranteed low drift, rail-to-rail I/O, and 10 MHz bandwidth-making it the only option among the three qualified for real-time, high-accuracy closed-loop control in 48 V automotive systems.
Availability
OPA197QDGKRQ1 is available at Aetrix Electronics and suitable for inverter and motor control, DC/DC converter, and battery management system applications requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for OPA197QDGKRQ1 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 delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The OPAx197-Q1 product line was engineered specifically for high-voltage, high-precision automotive signal conditioning-emphasizing e-trim™-enabled DC stability, EMI resilience, and robustness in harsh electrical environments.
FAQ
What is the maximum operating temperature range for the OPA197QDGKRQ1?
The OPA197QDGKRQ1 is AEC-Q100 qualified for Temperature Grade 1, supporting continuous operation from –40°C to +125°C ambient temperature. Its internal thermal protection activates at 140°C junction temperature, providing safeguard against sustained overtemperature conditions in engine bay or powertrain applications.
Does the OPA197QDGKRQ1 support single-supply operation?
Yes, the OPA197QDGKRQ1 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 each rail under no-load conditions-enabling direct interfacing with 3.3 V or 5 V microcontrollers even when powered from 12 V or 24 V rails.
What packaging and footprint does the OPA197QDGKRQ1 use?
The OPA197QDGKRQ1 uses the DGK package: an 8-pin Very Small Outline Package (VSSOP) with 0.65 mm pitch and nominal dimensions of 3.00 mm × 3.00 mm. This compact, surface-mount footprint is pin-compatible with other TI precision op amps in VSSOP-8, simplifying layout reuse across design generations.
How does the e-trim™ technology in the OPA197QDGKRQ1 improve long-term reliability?
The e-trim™ process performs final offset and drift calibration at the package level after plastic molding-eliminating stress-induced parameter shifts that occur in traditional wafer-level trimmed devices. This results in guaranteed ±250 µV max offset and ±0.2 µV/°C max drift over lifetime, critical for automotive systems where recalibration is impossible post-deployment.
Can the OPA197QDGKRQ1 drive capacitive loads without external compensation?
Yes, the OPA197QDGKRQ1 is designed to drive up to 1 nF capacitive loads stably without external isolation resistors or compensation networks. This capability is verified across temperature and supply voltage ranges, making it ideal for driving ADC inputs, long cables, or filtering networks in EMI-prone automotive environments.
OPA197QDGKRQ1 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:
- 25 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
OPA197QDGKRQ1 FAQ
1.How can I place an order for OPA197QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA197QDGKRQ1 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 OPA197QDGKRQ1 reliable?
The price and inventory of OPA197QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA197QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA197QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA197QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA197QDGKRQ1?
OPA197QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA197QDGKRQ1 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 OPA197QDGKRQ1?
For technical support, including OPA197QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA197QDGKRQ1 requirements.
6.How does Aetrix verify that OPA197QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA197QDGKRQ1 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 OPA197QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA197QDGKRQ1?
All OPA197QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA197QDGKRQ1, 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 OPA197QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA197QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA197QDGKRQ1 Tags
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