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Texas Instruments OPA2333AQDRQ1
- Part No.:
- OPA2333AQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2333AQDRQ1.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,311
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Product details
Overview
OPA2333AQDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, dual-channel, zero-drift CMOS operational amplifier designed for precision signal conditioning in automotive safety-critical systems. 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 and airbag control modules.
For engineers reviewing the OPA2333AQDRQ1 datasheet, OPA2333AQDRQ1 pinout, OPA2333AQDRQ1 application, or OPA2333AQDRQ1 equivalent, key selection criteria include its automotive-grade temperature range (–40°C to +125°C), micropower consumption under 20 µA/channel, guaranteed low-frequency noise performance, and absence of output phase reversal in unity-gain configurations.
Technical Context
The OPA2333AQDRQ1 employs 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 ultra-low drift. Its CMOS input stage provides ±70 pA typical bias current and 4 pF common-mode input capacitance, supporting high-impedance sensor interfaces without degradation.
This dual op-amp integrates rail-to-rail input (extending 100 mV beyond rails) and output (within 50 mV of rails) stages, delivering 104 dB open-loop gain and 130 dB CMRR over –40°C to +125°C. The design avoids complementary-input-stage crossover distortion, ensuring monotonic ADC driver performance with no differential linearity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset voltage (max) | 15 µV over full temperature range - ensures ≤0.15% error in 100-mV full-scale current-sense applications at 125°C. |
| VOS drift (max) | 0.05 µV/°C - contributes <0.6 µV total drift across 125°C span, critical for long-term calibration stability in occupant detection sensors. |
| 0.1–10 Hz noise | 1.1 µVPP - enables sub-10-µV resolution in slow-varying position and pressure sensor outputs. |
| Quiescent current | 17 µA per amplifier - allows dual-channel operation on 1.8-V battery rails with <35 µW total power, suitable for always-on vehicle systems. |
| Supply voltage range | 1.8 V to 5.5 V - supports direct connection to automotive 3.3-V or 5-V domains without LDO overhead. |
| CMRR (min) | 102 dB over –40°C to +125°C - rejects common-mode transients from motor drivers or solenoid switching in pump control circuits. |
| Gain-bandwidth | 350 kHz - sufficient for closed-loop bandwidths up to ~35 kHz in high-side current monitors with 10× gain. |
Pinout & Package
OPA2333AQDRQ1 is packaged in an 8-pin SOIC (D package) with nominal body size 4.90 mm × 3.91 mm, rated for surface-mount reflow per JEDEC Level-1 (260°C, unlimited). Thermal resistance RθJA is 124.0°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Drives feedback network or ADC input; rail-to-rail swing enables full utilization of 12-bit+ SAR ADC reference range. |
| 2 (–IN A) | Channel A inverting input | Accepts feedback signal; high impedance (±70 pA bias) minimizes resistor-generated Johnson noise in precision gain networks. |
| 3 (+IN A) | Channel A noninverting input | Connects to sensor node; common-mode range extends 100 mV beyond rails, allowing direct interface to grounded shunts. |
| 4 (V–) | Negative supply | Reference for dual-supply operation or ground in single-supply mode; must be decoupled with 0.1-µF ceramic capacitor. |
| 5 (+IN B) | Channel B noninverting input | Enables dual independent signal paths - e.g., simultaneous monitoring of brake pressure and pedal position. |
| 6 (–IN B) | Channel B inverting input | Supports differential configuration with Channel A; matched internal layout ensures <0.1 µV/V channel separation. |
| 7 (OUT B) | Channel B output | Provides second analog output without external duplication; identical AC/DC specs to OUT A. |
| 8 (V+) | Positive supply | Accepts 1.8–5.5 V; PSRR of 120 dB at DC reduces sensitivity to battery ripple in engine compartment environments. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2000 V and CDM ±1000 V ESD robustness - required for ASIL-B system components. |
| Zero-drift auto-calibration | Continuous 350-kHz signal path with 8-µs correction cycles eliminates 1/f noise and guarantees ≤15 µV offset over lifetime and temperature. |
| Rail-to-rail input/output | Input common-mode extends 100 mV beyond rails; output swings within 50 mV - enables true 0–5 V signal chain operation from single 5-V supply. |
| No output phase reversal | Guaranteed monotonic response under all input overdrive conditions - prevents latch-up or erroneous actuation in safety-critical feedback loops. |
| Low-power precision | 17 µA per channel at 25°C, rising to only 30 µA at 125°C - maintains accuracy without thermal runaway in sealed ECUs. |
Applications
| Brake System Monitoring | Vehicle Occupant Detection |
|---|---|
|
Use Scenario: Real-time measurement of hydraulic pressure via strain-gauge bridge in ABS/ESC modules. IC Role / Device Role / Timing Role: Dual-channel instrumentation front-end: Channel A conditions bridge output; Channel B buffers reference voltage for ratiometric ADC conversion. Use Value: 15 µV offset and 0.05 µV/°C drift ensure <0.5% full-scale error over vehicle life, meeting ISO 26262 ASIL-B diagnostic coverage requirements. |
Use Scenario: Capacitive seat sensor array detecting occupant presence, weight, and posture for airbag deployment logic. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting femtoamp-level capacitive current into stable DC voltage for MCU ADC sampling. Use Value: 1.1 µVPP (0.1–10 Hz) noise floor enables reliable detection of sub-100-fF capacitance shifts, critical for child vs adult classification. |
| Pump Control Feedback | Position Sensor Interface |
|
Use Scenario: Closed-loop current regulation of 12-V fuel or HVAC blower motor using shunt-based sensing. IC Role / Device Role / Timing Role: High-side current monitor with gain-setting resistors; output drives comparator or ADC for PWM duty-cycle adjustment. Use Value: Rail-to-rail output swing and 104 dB open-loop gain maintain 0.1% linearity across 0–10 A range, even at cold cranking voltages down to 6 V. |
Use Scenario: Analog signal conditioning for rotary or linear potentiometer-based throttle, suspension, or steering angle sensors. IC Role / Device Role / Timing Role: Buffer and level-shift amplifier driving 3.3-V ADC inputs while rejecting common-mode noise from adjacent power electronics. Use Value: 130 dB CMRR and 102 dB min CMRR over temperature suppress EMI-induced errors from nearby inverters, ensuring <0.2° angular error. |
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 | Same core silicon but in leaded SOIC (non-lead-free); RoHS exemption applies; MSL Level-1 unchanged. | Identical electrical specs and automotive qualification; used where legacy Pb-based assembly is mandated. | Select when board assembly process requires SnPb solder profile or legacy compliance documentation. |
| AD8628ARZ-REEL7 | Single-channel, 1 µV max offset, 0.005 µV/°C drift, 24 µA IQ, SOIC-8; not AEC-Q100 qualified. | Lacks automotive qualification and dual-channel integration; higher precision but no temperature grade assurance. | Consider only for non-safety-critical industrial subsystems requiring lower drift; not suitable for brake/airbag systems. |
Compared with OPA2333AQDRQ1, OPA2333PQDRQ1 offers identical performance with leaded finish for specific assembly lines, while AD8628ARZ-REEL7 trades automotive qualification and dual functionality for superior drift performance in non-automotive contexts - making OPA2333AQDRQ1 the sole choice for ASIL-B-compliant dual-channel sensing.
Availability
OPA2333AQDRQ1 is available at Aetrix Electronics and suitable for brake system monitoring, vehicle occupant detection, pump control feedback, and position sensor interface applications requiring stable component supply across automotive production lifecycles.
Supply support for OPA2333AQDRQ1 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 development and AEC-Q100 validation expertise.
The OPA2333AQDRQ1 belongs to TI's precision zero-drift op-amp product line, engineered specifically for high-reliability automotive signal conditioning where long-term offset stability, low noise, and functional safety compliance are mandatory.
FAQ
What is the maximum operating temperature range for the OPA2333AQDRQ1?
The OPA2333AQDRQ1 is specified for continuous operation from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This rating is validated across all electrical parameters including offset voltage, drift, and CMRR, and applies to both SOIC and VSSOP package variants of the OPA2333AQDRQ1.
Does the OPA2333AQDRQ1 support single-supply operation?
Yes, the OPA2333AQDRQ1 fully supports single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input extends 100 mV beyond the supply rails, and its rail-to-rail output swings within 50 mV of both rails - enabling accurate signal conditioning in 3.3-V or 5-V automotive domains without dual supplies. This capability is intrinsic to the OPA2333AQDRQ1's architecture.
Is the OPA2333AQDRQ1 pin-compatible with other devices in the OPA2333-Q1 family?
Yes, the OPA2333AQDRQ1 (SOIC-8) shares identical pinout and function mapping with OPA2333AQDGKRQ1 (VSSOP-8), including OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, and V+. Both variants use the same functional block diagram and electrical specifications, allowing direct PCB footprint substitution when thermal or layout constraints permit.
What is the typical quiescent current of the OPA2333AQDRQ1 at room temperature?
The typical quiescent current of the OPA2333AQDRQ1 is 17 µA per amplifier at 25°C and 5-V supply, with a maximum of 25 µA under those conditions. Over the full –40°C to +125°C range, quiescent current remains below 30 µA per channel, making the OPA2333AQDRQ1 suitable for always-on automotive subsystems with strict power budgets.
How does the auto-calibration architecture of the OPA2333AQDRQ1 affect its noise performance?
The OPA2333AQDRQ1's proprietary auto-calibration technique eliminates 1/f (flicker) noise entirely, resulting in flat spectral density down to 0.01 Hz. Measured 0.1–10 Hz noise is 1.1 µVPP, and 0.01–1 Hz noise is 0.3 µVPP - values confirmed in the official SBOS463B datasheet. This noise profile is inherent to the OPA2333AQDRQ1's continuous correction methodology and does not require external filtering.
OPA2333AQDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
OPA2333AQDRQ1 FAQ
1.How can I place an order for OPA2333AQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2333AQDRQ1 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 OPA2333AQDRQ1 reliable?
The price and inventory of OPA2333AQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2333AQDRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2333AQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2333AQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2333AQDRQ1?
OPA2333AQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2333AQDRQ1 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 OPA2333AQDRQ1?
For technical support, including OPA2333AQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2333AQDRQ1 requirements.
6.How does Aetrix verify that OPA2333AQDRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2333AQDRQ1 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 OPA2333AQDRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2333AQDRQ1?
All OPA2333AQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2333AQDRQ1, 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 OPA2333AQDRQ1 part is unused and in its original packaging.
Return procedure for OPA2333AQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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