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Texas Instruments OPA2333SHKQ
- Part No.:
- OPA2333SHKQ
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CSOIC (0.220", 5.65mm Width)
- Datasheet:
-
OPA2333SHKQ.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8CFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
OPA2333SHKQ from Texas Instruments is a high-temperature, dual-channel, zero-drift CMOS operational amplifier designed for precision signal conditioning in extreme environments. It delivers 26 μV max offset voltage, 0.05 μV/°C drift over –55°C to 210°C, 50 μA quiescent current per amplifier, rail-to-rail input/output swing, and operates from 1.8 V to 5.5 V supply. It is used in down-hole drilling sensor front-ends where long-term DC accuracy under thermal stress is critical.
For engineers reviewing the OPA2333SHKQ datasheet, OPA2333SHKQ pinout, OPA2333SHKQ application, or OPA2333SHKQ equivalent, this page provides verified technical context, validated pin functions, confirmed high-temperature performance limits, and real-world implementation constraints - all specific to the HKQ CFP-8 package variant rated for –55°C to 210°C operation.
Technical Context
The OPA2333SHKQ uses a proprietary auto-calibration architecture with continuous 350-kHz signal-path amplification and periodic (every 8 μs) offset correction, eliminating 1/f noise and enabling near-zero drift without aliasing. Its complementary input stage delivers >91 dB CMRR across full temperature range and avoids crossover distortion that degrades ADC linearity.
This dual op-amp integrates rail-to-rail input (extending 250 mV beyond rails at 210°C) and output (within 150 mV of rails), supports single-supply operation down to 1.8 V, and features diode-clamped inputs with ±4000-V HBM ESD rating. It is not intended as a comparator due to limited differential input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 26 μV maximum at –55°C to 210°C - ensures <±0.1% gain error in 100-mV full-scale sensor interfaces |
| Offset Drift | 0.05 μV/°C over –55°C to 210°C - enables stable calibration for >10-year down-hole deployments |
| Supply Range | 1.8 V to 5.5 V - supports battery-powered or low-voltage industrial systems without level-shifting |
| Quiescent Current | 50 μA per amplifier at 210°C - allows micropower operation in thermally isolated sensor nodes |
| Input Common-Mode Range | (V−) − 0.25 V to (V+) + 0.25 V at 210°C - enables direct interfacing to transducers biased beyond rails |
| Output Swing | Within 150 mV of rails at 210°C - maintains >95% dynamic range for 12-bit+ ADC drivers |
| Gain-Bandwidth | 350 kHz at –55°C to 210°C - sufficient for DC-coupled strain gauge, RTD, or thermocouple signal chains |
Pinout & Package
OPA2333SHKQ is housed in an 8-pin Ceramic Flatpack (CFP) package with dimensions 7.035 mm × 5.75 mm, optimized for hermetic sealing and thermal cycling reliability in down-hole modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Analog output channel A | Drives external load or ADC input; rail-to-rail swing supports full-scale utilization of low-voltage ADC references |
| 2 - –IN A | Inverting analog input channel A | Accepts feedback or inverted signal path; 4.25 pF input capacitance requires careful layout to avoid instability |
| 3 - +IN A | Noninverting analog input channel A | High-impedance (±5300 pA max bias at 210°C) node for sensor connections; thermally balanced routing required |
| 4 - V− | Negative power supply | Reference for internal circuitry; backside potential tied to V− per die specification; must be stable and low-noise |
| 5 - +IN B | Noninverting analog input channel B | Enables dual-sensor monitoring or chopper-stabilized reference buffering; shares same thermal sensitivity as Pin 3 |
| 6 - –IN B | Inverting analog input channel B | Supports independent feedback loop for second channel; matched input characteristics to Pins 2 and 3 |
| 7 - OUT B | Analog output channel B | Independent output for redundancy or differential drive; identical AC/DC specs to Pin 1 |
| 8 - V+ | Positive power supply | Highest potential rail; requires local 0.1-μF ceramic decoupling per TI layout guidelines to suppress supply noise |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Continuous 350-kHz signal path with 8-μs offset correction cycle eliminates 1/f noise and ensures <0.05 μV/°C drift |
| Rail-to-rail I/O at 210°C | Input extends 250 mV beyond rails; output swings within 150 mV - preserves dynamic range in single-supply 2.5-V systems |
| Controlled baseline manufacturing | Single assembly/test site and single fabrication site ensure consistent parametric distribution and traceable lot history |
| Extreme temperature qualification | 1000-hour continuous operation at max rated temperature; qualified for –55°C to 210°C per MIL-PRF-38535 Appendix G |
| High CMRR without crossover | 91 dB minimum at 210°C - prevents common-mode-induced nonlinearity when driving SAR or delta-sigma ADCs |
Applications
| Down-Hole Pressure Sensing | High-Temperature Motor Control Feedback |
|---|---|
Use Scenario: Amplifying millivolt-level output from piezoresistive pressure sensors embedded in oil/gas drill string components at 200°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with zero-drift compensation, directly interfacing sensor bridge to 24-bit sigma-delta ADC. Use Value: Maintains <±2 LSB offset error over 5-year deployment despite thermal cycling - eliminates field recalibration. |
Use Scenario: Conditioning current-sense signals from shunt resistors in traction inverters operating continuously at 175°C junction temperature. IC Role / Device Role / Timing Role: Dual-channel amplifier providing isolated phase-current measurement and temperature-compensated reference buffering. Use Value: Enables <0.5% current measurement accuracy at full load, supporting IGBT gate-drive safety interlocks. |
| Avionics Engine Monitoring | Geothermal Energy Sensor Hub |
Use Scenario: Signal conditioning for thermocouple and RTD inputs in turbine engine control units exposed to rapid thermal transients up to 210°C. IC Role / Device Role / Timing Role: Dual op-amp performing cold-junction compensation and linearization in analog domain prior to digitization. Use Value: Delivers <±0.25°C temperature accuracy without software correction - reduces FPGA resource usage. |
Use Scenario: Front-end amplification for pH, conductivity, and dissolved oxygen sensors deployed in geothermal wellhead manifolds at sustained 190°C. IC Role / Device Role / Timing Role: Low-power, high-impedance buffer and programmable-gain stage powering remote wireless sensor nodes. Use Value: Achieves 16-bit effective resolution with 50 μA total supply current - extends battery life to 8+ years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision high-temperature op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PHKJ | Same zero-drift core, but in 8-pin CDIP SB package (18.55 mm × 7.49 mm); higher RθJA (no airflow: ~117.5°C/W) | Better suited for board-level prototyping with through-hole mounting; less suitable for compact down-hole PCBs | Select when mechanical integration favors DIP footprint and thermal management includes forced convection |
| LMH6624MF/NOPB | Wideband (1.5 GHz GBW), no zero-drift; 1200 μV max VOS at 25°C; only rated to 125°C | Applicable only in non-DC-critical, high-speed analog front-ends where drift is mitigated digitally | Choose only if bandwidth >10 MHz is mandatory and thermal environment stays below 125°C |
Compared with OPA2333SHKQ, OPA2333PHKJ offers identical electrical performance but larger form factor and lower thermal efficiency, while LMH6624MF/NOPB trades precision and temperature range for speed - making OPA2333SHKQ the sole option for drift-sensitive, ultra-high-temperature DC signal chains.
Availability
OPA2333SHKQ is available at Aetrix Electronics and suitable for down-hole drilling instrumentation, avionics engine monitoring, and geothermal energy sensor systems requiring stable component supply across extended temperature lifecycles.
Supply support for OPA2333SHKQ 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 deep expertise in high-reliability, high-temperature IC design for aerospace, energy, and industrial markets.
The OPA2333SHKQ belongs to TI's High-Temperature Zero-Drift Op-Amp product line, engineered specifically for DC-precision signal acquisition in environments exceeding 150°C - targeting oilfield, defense, and geothermal applications where conventional op-amps fail.
FAQ
What is the maximum operating temperature of the OPA2333SHKQ?
The OPA2333SHKQ is fully specified and production-tested for continuous operation from –55°C to +210°C. Its electrical characteristics - including offset voltage (26 μV max), drift (0.05 μV/°C), and quiescent current (50 μA) - are guaranteed across this full range per SBOS483I datasheet revision I. Thermal derating is not required up to 210°C.
Does the OPA2333SHKQ support single-supply operation?
Yes, the OPA2333SHKQ supports true single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input extends 250 mV beyond both supply rails and its output swings within 150 mV of each rail at 210°C - enabling direct interfacing with 2.5-V or 3.3-V ADCs without level-shifting circuitry.
What package type is used for the OPA2333SHKQ?
The OPA2333SHKQ uses an 8-pin Ceramic Flatpack (CFP) package with nominal body size 7.035 mm × 5.75 mm. This hermetically sealed package meets MIL-STD-883 requirements for moisture resistance and thermal shock, making it suitable for permanent down-hole deployment.
How does the auto-calibration architecture of the OPA2333SHKQ eliminate 1/f noise?
The OPA2333SHKQ employs a proprietary time-continuous 350-kHz amplifier in the signal path, with offset correction performed every 8 μs using internal sampling and storage. This architecture removes flicker noise entirely - confirmed by flat voltage noise spectral density from 0.1 Hz upward - unlike chopper-stabilized amplifiers that introduce switching artifacts.
Is the OPA2333SHKQ pin-compatible with other variants in the OPA2333-HT family?
Yes, all OPA2333-HT variants - including OPA2333SHKQ (CFP), OPA2333PHKJ (CDIP SB), and OPA2333D (SOIC) - share identical 8-pin functional pinout per datasheet Figure 3. However, thermal performance, package size, and mounting method differ significantly; PCB layout must match the specific variant's mechanical footprint and thermal vias.
OPA2333SHKQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-CSOIC (0.220", 5.65mm Width)
- Packaging:
- Tube
- 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:
- -55°C ~ 210°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CFP
OPA2333SHKQ FAQ
1.How can I place an order for OPA2333SHKQ through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2333SHKQ 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 OPA2333SHKQ reliable?
The price and inventory of OPA2333SHKQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2333SHKQ is usually 5 days.
3.What payment methods are accepted for OPA2333SHKQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2333SHKQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2333SHKQ?
OPA2333SHKQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2333SHKQ 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 OPA2333SHKQ?
For technical support, including OPA2333SHKQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2333SHKQ requirements.
6.How does Aetrix verify that OPA2333SHKQ is sourced from the original manufacturer or authorized distributors?
All OPA2333SHKQ 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 OPA2333SHKQ meets industry standards.
7.What is the process for return or replacement of OPA2333SHKQ?
All OPA2333SHKQ units undergo pre-shipment inspection (PSI). If there is an issue with OPA2333SHKQ, 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 OPA2333SHKQ part is unused and in its original packaging.
Return procedure for OPA2333SHKQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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