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Texas Instruments OPA2333AQDGKRQ1
- Part No.:
- OPA2333AQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2333AQDGKRQ1.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,606
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Product details
Overview
OPA2333AQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, dual-channel, zero-drift CMOS operational amplifier optimized for automotive sensor signal conditioning. It delivers 10 µV max input offset voltage, 0.05 µV/°C drift, 1.1 µVPP (0.1–10 Hz) noise, 17 µA quiescent current per channel, and rail-to-rail input/output operation from 1.8 V to 5.5 V supply - enabling high-accuracy current sensing in brake system monitoring circuits.
For engineers reviewing the OPA2333AQDGKRQ1 datasheet, OPA2333AQDGKRQ1 pinout, OPA2333AQDGKRQ1 application, or OPA2333AQDGKRQ1 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade application mappings, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The OPA2333AQDGKRQ1 uses a proprietary auto-calibration architecture with continuous 350-kHz signal-path amplification and periodic 8-µs offset correction - eliminating 1/f flicker noise while maintaining unity-gain stability and no output phase reversal. Its rail-to-rail input extends 100 mV beyond supply rails, and output swings within 50 mV of rails at 10 kΩ load.
This dual op-amp integrates complementary input stages with >102 dB CMRR over –40°C to +125°C, enabling precision ADC driving without differential linearity degradation. It operates across full automotive temperature range with guaranteed 15 µV max offset voltage and 30 µA max quiescent current at extreme temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 15 µV (max, –40°C to +125°C): ensures ≤0.15% error in 100-mV full-scale sensor outputs without trimming. |
| Offset Drift | 0.05 µV/°C (max): contributes <0.6 µV total drift over 125°C span - critical for occupant detection sensor calibration stability. |
| 0.1–10 Hz Noise | 1.1 µVPP: enables sub-10-µV resolution in low-frequency position sensor interfaces. |
| Quiescent Current | 17 µA per channel (typ, 25°C): supports always-on vehicle systems with <34 µA total IQ for dual-channel operation. |
| Supply Range | 1.8 V to 5.5 V: allows direct interface with 2.5-V or 3.3-V microcontrollers and battery-sensed 12-V systems via LDO. |
| CMRR | 102 dB (min, –40°C to +125°C): rejects common-mode noise from shared ground paths in pump motor control PCBs. |
| Gain-Bandwidth | 350 kHz: sufficient for DC–100-Hz sensor bandwidths with ≥10× gain margin in bridge amplifier configurations. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm lead pitch, exposed pad optional, RoHS-compliant NIPDAU finish, MSL Level-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Drives high-impedance inputs (e.g., ADC reference buffer) or low-side shunt monitor feedback node. |
| 2 (–IN A) | Channel A inverting input | Accepts feedback from current-sense resistor; requires <10 mA current limiting if driven beyond rails. |
| 3 (+IN A) | Channel A noninverting input | Connects to bridge mid-point or sensor output; common-mode range extends 100 mV beyond V–/V+. |
| 4 (V–) | Negative supply | Ground reference for single-supply operation; supports pulldown technique to achieve –2 mV output swing. |
| 5 (+IN B) | Channel B noninverting input | Used for dual-sensor redundancy (e.g., dual airbag crash sensors) or instrumentation amp front-end stage. |
| 6 (–IN B) | Channel B inverting input | Configured for differential gain setting in precision instrumentation amplifier topologies. |
| 7 (OUT B) | Channel B output | Provides independent signal path for diagnostics or secondary control loop (e.g., brake pressure backup channel). |
| 8 (V+) | Positive supply | Accepts 1.8–5.5 V; bypass capacitor required within 2 mm for EMI immunity in engine bay environments. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±2000 V / CDM ±1000 V ESD robustness - meets ISO 26262 ASIL-B readiness requirements. |
| Zero-drift auto-calibration | Continuous 350-kHz signal path with 8-µs offset correction eliminates 1/f noise and guarantees long-term dc accuracy in occupant detection systems. |
| Rail-to-rail input/output | Input common-mode extends 100 mV beyond rails; output swings to within 50 mV of rails - maximizes dynamic range in 3.3-V automotive ECUs. |
| Low-power precision | 17 µA per channel enables always-on sensor nodes with <100 µW total power - suitable for battery-backed vehicle occupancy monitors. |
| No output phase reversal | Guaranteed stable behavior during rail-to-rail input transitions - prevents latch-up in brake system analog front-ends during transients. |
Applications
| Brake System Monitoring | Vehicle Occupant Detection |
|---|---|
|
Use Scenario: Amplifying millivolt-level signals from piezoresistive brake pressure sensors in ABS modules under wide temperature and vibration conditions. IC Role / Device Role / Timing Role: Dual-channel precision amplifier providing matched gain and offset tracking for differential pressure measurement and fault-detection redundancy. Use Value: 15 µV max offset and 0.05 µV/°C drift ensure <0.3% full-scale error over lifetime - meeting OEM brake system diagnostic accuracy thresholds. |
Use Scenario: Conditioning capacitive or resistive seat sensor outputs to detect adult vs child presence for airbag suppression logic. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input amplifier capturing sub-100-µV sensor variations with 1.1 µVPP (0.1–10 Hz) noise floor. Use Value: 17 µA quiescent current per channel enables always-on monitoring without draining 12-V battery - critical for parked vehicle occupancy detection. |
| Pump Control Feedback | Position Sensor Interface |
|
Use Scenario: Closed-loop current sensing for electric power steering (EPS) or HVAC blower motor drivers using low-value shunt resistors. IC Role / Device Role / Timing Role: High-CMRR (102 dB min) amplifier rejecting PWM switching noise while delivering accurate ISENSE to MCU ADC. Use Value: Rail-to-rail output swing to within 50 mV of rails ensures full utilization of 12-bit ADC range - improving current resolution by 2 LSBs vs. legacy op-amps. |
Use Scenario: Signal conditioning for potentiometric or Hall-effect throttle/steering angle sensors requiring sub-degree linearity. IC Role / Device Role / Timing Role: Dual op-amp configured as precision difference amplifier and buffer for ratiometric sensor excitation and readout. Use Value: 10 µV typical offset and near-zero drift maintain <0.05° angular error over 15-year vehicle life - satisfying SAE J2947 positional accuracy targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision automotive op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PQDRQ1 | SOIC-8 package (4.90 × 3.91 mm); same electrical specs but higher RθJA (124°C/W vs 180°C/W) and Level-1 MSL rating. | Better thermal performance in high-density layouts; preferred for space-constrained modules where VSSOP reflow profile adds risk. | Select when board area permits larger footprint and production prefers simpler reflow profile. |
| AD8628ARZ-REEL7 | Single-channel, 1.5 µV max offset, 0.02 µV/°C drift, 240 µA IQ, SOIC-8; not AEC-Q100 qualified (only industrial temp). | Higher precision but lacks automotive qualification and consumes 14× more current - unsuitable for always-on systems. | Consider only for non-safety-critical cabin electronics where ultra-low offset outweighs qualification and power needs. |
Compared with OPA2333AQDGKRQ1, the SOIC-packaged OPA2333PQDRQ1 offers identical performance with relaxed reflow requirements, while AD8628ARZ-REEL7 trades automotive qualification and micropower operation for lower offset - making the OPA2333AQDGKRQ1 the sole choice for ASIL-B-compliant, low-power dual-channel sensing.
Availability
OPA2333AQDGKRQ1 is available at Aetrix Electronics and suitable for brake system monitoring, vehicle occupant detection, and pump control applications requiring stable component supply across automotive production lifecycles.
Supply support for OPA2333AQDGKRQ1 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 over 50 years of automotive IC development experience and broad AEC-Q100 product portfolio.
The OPA2333-Q1 product line delivers zero-drift, micropower operational amplifiers specifically engineered for high-accuracy, low-power signal conditioning in automotive safety-critical subsystems including airbag, brake, and occupant detection systems.
FAQ
What is the maximum operating temperature range for the OPA2333AQDGKRQ1?
The OPA2333AQDGKRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, fully compliant with AEC-Q100 Grade 1 requirements. This range is validated across all electrical parameters including offset voltage, drift, and CMRR - ensuring reliable performance in under-hood and passenger compartment environments where the OPA2333AQDGKRQ1 is deployed in brake and airbag control units.
Does the OPA2333AQDGKRQ1 support single-supply operation?
Yes, the OPA2333AQDGKRQ1 supports true single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input extends 100 mV beyond both supply rails, and its output swings within 50 mV of each rail at 10 kΩ load - enabling direct interfacing with 3.3-V or 2.5-V microcontrollers and ADCs without level-shifting circuitry in applications like vehicle occupant detection sensors.
What is the typical quiescent current of the OPA2333AQDGKRQ1 per channel?
The OPA2333AQDGKRQ1 draws 17 µA typical quiescent current per channel at 25°C and 5 V supply, with a maximum of 30 µA across the full –40°C to +125°C range. This micropower consumption makes the OPA2333AQDGKRQ1 ideal for always-on automotive subsystems such as parking occupancy monitors, where total dual-channel draw remains below 60 µA - minimizing impact on 12-V battery standby life.
Is the OPA2333AQDGKRQ1 pin-compatible with other members of the OPA2333-Q1 family?
Yes, the OPA2333AQDGKRQ1 shares identical pinout and functionality with all OPA2333-Q1 variants including OPA2333PQDRQ1 (SOIC-8) and OPA2333AQDRQ1 (SOIC-8), as confirmed in TI's Pin Configuration and Functions section. All use the same 8-pin dual-amplifier layout with OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+ assignments - enabling drop-in replacement between VSSOP and SOIC packages in existing designs.
How does the auto-calibration architecture of the OPA2333AQDGKRQ1 eliminate 1/f noise?
The OPA2333AQDGKRQ1 employs a proprietary time-continuous 350-kHz op-amp in the signal path with periodic 8-µs auto-calibration cycles that null offset and cancel flicker noise - resulting in flat spectral density down to 0.01 Hz. This architecture produces 1.1 µVPP (0.1–10 Hz) noise and eliminates traditional chopper ripple, making the OPA2333AQDGKRQ1 suitable for precision DC measurements in position and pressure sensors where 1/f noise would otherwise dominate error budgets.
OPA2333AQDGKRQ1 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:
- CMOS, Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.16V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 17µA (x2 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 1.8 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
OPA2333AQDGKRQ1 FAQ
1.How can I place an order for OPA2333AQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2333AQDGKRQ1 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 OPA2333AQDGKRQ1 reliable?
The price and inventory of OPA2333AQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2333AQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2333AQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2333AQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2333AQDGKRQ1?
OPA2333AQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2333AQDGKRQ1 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 OPA2333AQDGKRQ1?
For technical support, including OPA2333AQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2333AQDGKRQ1 requirements.
6.How does Aetrix verify that OPA2333AQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2333AQDGKRQ1 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 OPA2333AQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2333AQDGKRQ1?
All OPA2333AQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2333AQDGKRQ1, 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 OPA2333AQDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA2333AQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2333AQDGKRQ1 Tags
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LM358DT
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