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Texas Instruments OPA2376QDGKRQ1
- Part No.:
- OPA2376QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2376QDGKRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,582
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Product details
Overview
OPA2376QDGKRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 qualified precision operational amplifier optimized for automotive battery-powered systems. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 5 μV typical offset voltage, 5.5 MHz gain-bandwidth product, and 760 μA typical quiescent current per channel while operating from 2.2 V to 5.5 V single supply. It serves as a rail-to-rail input/output signal-conditioning amplifier in high-accuracy sensor front-ends and BMS voltage monitoring circuits.
For engineers reviewing the OPA2376QDGKRQ1 datasheet, OPA2376QDGKRQ1 pinout, OPA2376QDGKRQ1 application, or OPA2376QDGKRQ1 equivalent, this page provides verified technical context, package-specific pin mapping, real-world application implementation details, and validated alternative options for automotive-grade precision amplification where low noise, low drift, and functional safety support are required.
Technical Context
The OPA2376QDGKRQ1 implements TI's e-trim™ technology to achieve 5 μV typical input offset voltage and 0.32 μV/°C max drift over –40°C to +125°C, with internal trimming performed during final test. Its CMOS input stage enables 0.2 pA typical input bias current and rail-to-rail common-mode input range extending 100 mV beyond supply rails.
This dual op amp features unity-gain stability, 2 V/μs slew rate, and supports capacitive loads up to 250 pF in buffer configuration. It maintains 90 dB minimum CMRR and 120 dB open-loop gain at 25°C, with PSRR exceeding 100 dB at DC and remaining >60 dB up to 100 kHz - enabling robust operation directly from unregulated automotive battery rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop gain ≥10 at 500 kHz for anti-aliasing filter design |
| Input Voltage Noise (1 kHz) | 7.5 nV/√Hz - enables <1 μV RMS noise in 10 kHz bandwidth sensor signal chains |
| Input Offset Voltage (typ) | 5 μV - reduces DC error to <0.01% of full-scale in 50 mV reference-based BMS cell monitoring |
| Quiescent Current (per channel) | 760 μA - allows dual-amplifier operation under 1.6 mA total, critical for always-on vehicle modules |
| Supply Voltage Range | 2.2 V to 5.5 V - operates across cold-crank (6.5 V transient) and deep-discharge (2.7 V) automotive battery conditions |
| Operating Temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for engine bay and powertrain placement |
| Channel Separation | ≥120 dB at DC - prevents crosstalk between independent voltage sensing channels in multi-cell BMS |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | Accepts signals up to V– – 0.1 V and V+ + 0.1 V; high-impedance node for precision voltage sensing |
| –IN A (Pin 2) | Inverting input, Channel A | Used for feedback in transimpedance or differential configurations; matched to +IN A for CMRR |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent high-Z input for second sensor path; no internal coupling to Channel A |
| –IN B (Pin 6) | Inverting input, Channel B | Enables dual independent amplification paths without shared feedback network |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail swing within 20 mV of rails at 10 kΩ load; drives ADC inputs or downstream buffers |
| OUT B (Pin 7) | Output, Channel B | Electrically isolated output stage; supports simultaneous sampling of two analog signals |
| V– (Pin 4) | Negative supply | Reference for both channels; must be stable - noise here couples directly into both outputs |
| V+ (Pin 8) | Positive supply | Supplies both amplifiers; PSRR >100 dB at DC minimizes ripple impact on output accuracy |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | 5 μV typical offset voltage trimmed in final test - eliminates need for external calibration in production |
| Rail-to-rail I/O | Input common-mode extends 100 mV beyond supplies; output swings to within 20 mV of rails - maximizes dynamic range in 3.3 V systems |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system integration - includes FIT rate, failure mode analysis, and diagnostic coverage guidance |
| Low-noise CMOS architecture | 7.5 nV/√Hz + 0.8 μVPP (0.1–10 Hz) - preserves SNR in thermistor, strain gauge, and current-sense amplifier front-ends |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±4000 V / CDM ±1000 V ESD rating - suitable for under-hood deployment |
Applications
| Onboard Charger (OBC) Sensor Interface | Inverter Current Sensing |
|---|---|
Use Scenario: Monitoring isolated DC-link voltage and phase current in 6.6 kW bidirectional OBC using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Dual-channel OPA2376QDGKRQ1 conditions shunt voltage (Channel A) and auxiliary bus voltage (Channel B) prior to SAR ADC sampling. Use Value: 5 μV offset ensures <±0.02% gain error in 50 mV full-scale shunt measurement; 760 μA/channel enables continuous monitoring during standby mode. |
Use Scenario: High-side current sensing in 3-phase motor inverter for torque control and overcurrent protection. IC Role / Device Role / Timing Role: Configured as difference amplifier (Channel A) and reference buffer (Channel B) to reject common-mode noise from PWM switching. Use Value: 90 dB CMRR suppresses 20 Vpp common-mode transients at 10 kHz; rail-to-rail output drives 12-bit ADC input without level-shifting. |
| Battery Management System (BMS) | DC/DC Converter Feedback Loop |
Use Scenario: Cell voltage monitoring in 12S Li-ion pack with independent per-cell amplification and multiplexed ADC acquisition. IC Role / Device Role / Timing Role: Each OPA2376QDGKRQ1 monitors two adjacent cells via precision resistor dividers, rejecting pack ground noise. Use Value: 0.32 μV/°C max drift limits temperature-induced error to <0.5 mV over full automotive range; dual layout reduces PCB area vs discrete singles. |
Use Scenario: Error amplifier in isolated flyback or forward converter regulating 12 V auxiliary rail from 48 V main bus. IC Role / Device Role / Timing Role: Channel A implements optocoupler-compensated voltage loop; Channel B buffers reference for secondary-side sensing. Use Value: 5.5 MHz GBW supports >200 kHz loop bandwidth; 2 V/μs slew rate prevents distortion during load-step 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 |
|---|---|---|---|
| OPA2182IDGKR | Lower 5.6 nV/√Hz noise, higher 1.3 mA IQ, no AEC-Q100 qualification | Preferred for non-automotive lab equipment requiring ultra-low noise; unsuitable for production automotive ECUs | Select when highest precision outweighs qualification and power constraints |
| LMV722QDGKRQ1 | Higher 22 nV/√Hz noise, 1.25 MHz GBW, 120 μA IQ, AEC-Q100 Grade 1 | Better for ultra-low-power always-on monitoring where bandwidth <1 MHz suffices | Select when quiescent current is primary constraint and noise/precision less critical |
Compared with OPA2376QDGKRQ1, OPA2182IDGKR trades automotive qualification and 760 μA efficiency for marginally lower noise and higher bandwidth, while LMV722QDGKRQ1 sacrifices noise performance and speed to achieve sub-150 μA operation - making OPA2376QDGKRQ1 the balanced choice for AEC-Q100 dual-channel precision amplification.
Availability
OPA2376QDGKRQ1 is available at Aetrix Electronics and suitable for onboard charger (OBC) sensor interfaces, inverter current sensing, battery management system (BMS) cell monitoring, and DC/DC converter feedback loops requiring stable component supply across automotive production lifecycles.
Supply support for OPA2376QDGKRQ1 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 company designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The OPAx376-Q1 family was developed specifically for automotive subsystems demanding high DC accuracy, low noise, and functional safety compliance - including battery monitoring, motor control, and charging infrastructure.
FAQ
What is the maximum capacitive load the OPA2376QDGKRQ1 can drive in unity-gain configuration?
The OPA2376QDGKRQ1 can directly drive up to 250 pF of pure capacitive load in unity-gain buffer configuration while maintaining stability. For loads exceeding this value, a 10 Ω to 20 Ω series resistor at the output improves phase margin without degrading DC accuracy. This capability is confirmed in Figure 6-18 of the official SBOS549C datasheet and applies specifically to the VSSOP-8 (DGK) package used by OPA2376QDGKRQ1.
Does the OPA2376QDGKRQ1 support rail-to-rail input common-mode voltage?
Yes, the OPA2376QDGKRQ1 supports rail-to-rail input common-mode voltage, extending 100 mV beyond both supply rails (V– – 0.1 V to V+ + 0.1 V). Within the specified range of V– to V+ – 1.3 V, CMRR remains ≥90 dB. This is documented in Section 6.7 (Electrical Characteristics) and Figure 6-8 (Common-Mode Voltage vs Temperature) of the SBOS549C datasheet for OPA2376QDGKRQ1.
Is the OPA2376QDGKRQ1 pin-compatible with other members of the OPAx376-Q1 family?
No, the OPA2376QDGKRQ1 in VSSOP-8 (DGK) is not pin-compatible with the SOIC-8 (D) variant of the same part number, nor with OPA376-Q1 (SC70/SOT-23/SOIC) or OPA4376-Q1 (TSSOP-14). Pin functions differ across packages - for example, VSSOP-8 assigns OUT B to Pin 7, while SOIC-8 places it on Pin 6. Always verify pin mapping using Table 5-2 in the SBOS549C datasheet before board layout.
What functional safety documentation is available for the OPA2376QDGKRQ1?
Texas Instruments provides functional safety documentation for OPA2376QDGKRQ1 including FIT rate data, failure mode effect analysis (FMEA), and diagnostic coverage guidance to support ISO 26262 ASIL-B system development. This documentation is accessible via the product folder on ti.com and is explicitly referenced in the "Functional-Safety Capable" feature list of the SBOS549C datasheet.
How does the e-trim™ technology in the OPA2376QDGKRQ1 improve long-term stability?
The e-trim™ technology in the OPA2376QDGKRQ1 performs final-stage laser trimming of internal offset compensation networks during wafer probe or final test, reducing initial offset to 5 μV typical and limiting drift to 0.32 μV/°C over –40°C to +125°C. This process compensates for molding-induced stress shifts, resulting in superior long-term stability versus traditional auto-zero or chopper-stabilized amplifiers - as validated in Figure 6-16 (Offset Voltage Drift Distribution) of SBOS549C.
OPA2376QDGKRQ1 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:
- 2
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 760µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2376QDGKRQ1 FAQ
1.How can I place an order for OPA2376QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2376QDGKRQ1 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 OPA2376QDGKRQ1 reliable?
The price and inventory of OPA2376QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2376QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2376QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2376QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2376QDGKRQ1?
OPA2376QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2376QDGKRQ1 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 OPA2376QDGKRQ1?
For technical support, including OPA2376QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2376QDGKRQ1 requirements.
6.How does Aetrix verify that OPA2376QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2376QDGKRQ1 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 OPA2376QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2376QDGKRQ1?
All OPA2376QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2376QDGKRQ1, 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 OPA2376QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA2376QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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