My Inquiry
My Account
Texas Instruments OPA2333AMDREP
- Part No.:
- OPA2333AMDREP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2333AMDREP.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,430
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2333AMDREP from Texas Instruments is a dual, zero-drift, rail-to-rail input/output CMOS operational amplifier optimized for precision, low-power, single-supply operation across –55°C to 125°C. It delivers 23 µV max offset voltage, 1.1 µVPP (0.1–10 Hz) noise, 17 µA quiescent current per amplifier, 1.8 V to 5.5 V supply range, and 350 kHz gain-bandwidth - enabling high-accuracy signal conditioning in battery-powered medical instrumentation and transducer interfaces.
For engineers reviewing the OPA2333AMDREP datasheet, OPA2333AMDREP pinout, OPA2333AMDREP application, or OPA2333AMDREP equivalent, key selection criteria include its extended temperature qualification, microamp-level quiescent current, sub-µVPP low-frequency noise, and SO-8 package compatibility with legacy precision op-amp footprints in aerospace-grade analog front-ends.
Technical Context
The OPA2333AMDREP employs a proprietary auto-calibration architecture that continuously corrects input offset every 8 µs using a time-continuous 350-kHz core amplifier - eliminating 1/f flicker noise while maintaining unity-gain stability and no output phase reversal. Its input stage achieves 102 dB minimum CMRR over –55°C to 125°C without crossover distortion, critical for driving SAR and delta-sigma ADCs without differential linearity degradation.
This dual-channel device supports rail-to-rail input common-mode range extending 100 mV beyond both supply rails and rail-to-rail output swing within 50 mV of each rail at 10 kΩ load. Input bias current remains ultra-low (±70 pA typ) and stable across temperature, enabling high-impedance sensor interfacing without significant error sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 23 µV (max) - enables ≤0.001% gain error in 16-bit+ precision measurement systems without trimming. |
| 0.1–10 Hz Noise | 1.1 µVPP - supports accurate DC-coupled thermocouple and strain gauge readings below 10 Hz. |
| Quiescent Current | 17 µA per amplifier - allows continuous operation for >10 years on a single CR2032 coin cell in handheld test equipment. |
| Supply Range | 1.8 V to 5.5 V - compatible with single Li-ion, 2×AA, or regulated 3.3 V/5 V rails in portable medical devices. |
| Gain-Bandwidth | 350 kHz - sufficient for anti-aliasing filtering and buffered sensor excitation up to ~30 kHz. |
| CMRR | 102 dB (min) - rejects common-mode interference in noisy industrial environments without signal distortion. |
| Operating Temp | –55°C to 125°C - qualified for defense/aerospace avionics, downhole oil & gas sensors, and engine control modules. |
Pinout & Package
OPA2333AMDREP is housed in an industry-standard SOIC-8 (D) package, 3.9 mm × 4.9 mm, with 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, and MSL Level-1 rating. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives loads down to 10 kΩ with rail-to-rail swing; requires local 0.1 µF bypass capacitor for stability. |
| 2 (–IN A) | Inverting input A | High-impedance node (±70 pA bias); accepts signals 100 mV beyond V– or V+, enabling true single-supply sensor biasing. |
| 3 (+IN A) | Non-inverting input A | Matches –IN A in impedance and drift; used for reference buffering or differential sensing with matched trace routing. |
| 4 (V–) | Negative supply rail | Ground reference for single-supply operation; supports pulldown resistor technique to extend output below rail by ~2 mV. |
| 5 (V+) | Positive supply rail | Accepts 1.8–5.5 V; internal ESD protection clamps inputs to rails ±0.3 V - external current limiting required if overvoltage exceeds 0.5 V. |
| 6 (+IN B) | Non-inverting input B | Independent channel input; identical specs to +IN A - enables dual-sensor monitoring or chopper-stabilized reference paths. |
| 7 (–IN B) | Inverting input B | Electrically isolated from Channel A; supports separate feedback networks without crosstalk-induced drift. |
| 8 (OUT B) | Amplifier B output | Functionally identical to OUT A; allows simultaneous signal conditioning of two independent analog channels. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-calibration | Continuous 8 µs offset correction eliminates thermal drift and long-term aging - maintains <1 µV offset shift over 300 hours at 150°C. |
| Rail-to-rail I/O | Input extends 100 mV beyond rails; output swings within 50 mV - enables full-scale utilization of 16-bit ADCs with 0–3.3 V supplies. |
| Ultra-low power | 17 µA per amplifier at 25°C - reduces self-heating to <0.1°C in sealed enclosures, preserving measurement accuracy. |
| High CMRR without crossover | 102 dB min over full temp range - avoids distortion when amplifying small differential signals in presence of large common-mode noise. |
| RFI-immune design | Minimized RF rectification sensitivity - prevents offset shifts under GSM/ISM band interference in portable diagnostic tools. |
Applications
| Transducer Signal Conditioning | Medical Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from load cells, pressure sensors, or RTDs in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with matched dual channels for ratiometric bridge excitation and differential readout. Use Value: 23 µV max offset and 1.1 µVPP noise ensure ≤0.01% full-scale error in 24-bit weigh scale designs operating from 3.3 V batteries. |
Use Scenario: Front-end amplification for ECG, EEG, or pulse oximetry analog signal chains in portable patient monitors. IC Role / Device Role / Timing Role: Dual-channel biopotential amplifier providing simultaneous lead-I/lead-II acquisition with independent DC biasing. Use Value: Rail-to-rail I/O and 17 µA/quiescent current enable >72-hour battery life in Class II medical devices while meeting IEC 60601-2-27 low-noise requirements. |
| Temperature Measurement | Battery-Powered Test Equipment |
|
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in handheld thermal imagers. IC Role / Device Role / Timing Role: Low-drift buffer and reference amplifier for thermocouple cold-junction sensor (e.g., REF3140 + OPA2333AMDREP). Use Value: 0.02 µV/°C drift ensures <0.1°C measurement uncertainty over –20°C to 85°C ambient, critical for NIST-traceable calibration. |
Use Scenario: Input buffer and autoranging amplifier in handheld multimeters and insulation resistance testers. IC Role / Device Role / Timing Role: Dual-channel programmable gain stage supporting 100 nA–10 mA current measurement ranges with auto-zeroed offset. Use Value: Extended –55°C to 125°C qualification allows operation in outdoor field environments; 1.8 V minimum supply supports alkaline battery depletion down to 1.9 V/cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Commercial-grade (–40°C to 125°C), non-EP packaging, lower cost; lacks military temp qualification and extended product lifecycle support. | Suitable for industrial automation but not defense/aerospace due to unqualified –55°C operation and shorter obsolescence notice. | Select OPA2333AMDREP when full MIL-PRF-38535 compliance, lot traceability, and 15+ year production continuity are mandatory. |
| AD8629ARZ | Single-supply, zero-drift op-amp with 1 µV max offset and 0.5 µVPP noise, but 250 µA IQ and only –40°C to 125°C rating. | Higher power consumption limits use in multi-year battery deployments; lacks extended temperature validation for space-grade systems. | Choose OPA2333AMDREP where sub-20 µA quiescent current and –55°C capability outweigh marginal offset/noise improvements. |
Compared with OPA2333AIDR and AD8629ARZ, OPA2333AMDREP uniquely combines military-temperature operation, microamp quiescent current, and certified extended product lifecycle - making it the only option qualified for long-duration, unattended, high-reliability analog sensing in defense platforms.
Availability
OPA2333AMDREP is available at Aetrix Electronics and suitable for defense avionics, aerospace telemetry, and medical diagnostics requiring stable component supply across extended product lifecycles and extreme environmental conditions.
Supply support for OPA2333AMDREP 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 innovation in precision signal chain solutions.
The OPA2333AMDREP belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power, extended-temperature applications in defense, aerospace, and medical instrumentation.
FAQ
What is the maximum operating temperature range for the OPA2333AMDREP?
The OPA2333AMDREP is fully specified and tested from –55°C to 125°C, meeting extended temperature requirements for defense and aerospace applications. This range is validated per MIL-PRF-38535 standards, including thermal cycling, burn-in, and parametric testing at both extremes - unlike commercial variants such as OPA2333AIDR, which only guarantee –40°C operation.
Does the OPA2333AMDREP require external components for stable operation?
Yes, the OPA2333AMDREP requires a 0.1 µF ceramic capacitor placed as close as possible between pins 4 (V–) and 5 (V+) for supply decoupling. No additional compensation components are needed - the device is unity-gain stable and internally compensated. Input protection resistors are recommended only if input voltages exceed supply rails by ≥0.5 V.
How does the auto-calibration architecture of the OPA2333AMDREP affect system-level noise performance?
The OPA2333AMDREP's proprietary auto-calibration eliminates 1/f (flicker) noise entirely, resulting in flat voltage noise spectral density down to 0.01 Hz. Its measured 1.1 µVPP (0.1–10 Hz) noise is deterministic and repeatable - enabling predictable noise floor modeling in precision DC measurements without statistical averaging or complex filtering.
Can the OPA2333AMDREP drive capacitive loads directly?
The OPA2333AMDREP is characterized to drive up to 100 pF capacitive loads without oscillation, as shown in typical overshoot vs. load capacitance data. For loads >100 pF, external series resistance (typically 10–50 Ω) at the output is recommended to maintain phase margin - especially critical in multiplexed sensor arrays where cable capacitance accumulates.
Is the OPA2333AMDREP pin-compatible with standard SOIC-8 op-amps?
Yes, the OPA2333AMDREP uses the JEDEC MS-012 (SOIC-8) footprint with 1.27 mm pitch and 3.9 mm × 4.9 mm body dimensions - matching legacy precision op-amps like OP27 and OPA227. However, its dual-channel zero-drift performance, microamp quiescent current, and extended temperature range provide functional advantages not found in those older architectures.
OPA2333AMDREP 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2333AMDREP FAQ
1.How can I place an order for OPA2333AMDREP through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2333AMDREP 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 OPA2333AMDREP reliable?
The price and inventory of OPA2333AMDREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2333AMDREP is usually 5 days.
3.What payment methods are accepted for OPA2333AMDREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2333AMDREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2333AMDREP?
OPA2333AMDREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2333AMDREP 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 OPA2333AMDREP?
For technical support, including OPA2333AMDREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2333AMDREP requirements.
6.How does Aetrix verify that OPA2333AMDREP is sourced from the original manufacturer or authorized distributors?
All OPA2333AMDREP 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 OPA2333AMDREP meets industry standards.
7.What is the process for return or replacement of OPA2333AMDREP?
All OPA2333AMDREP units undergo pre-shipment inspection (PSI). If there is an issue with OPA2333AMDREP, 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 OPA2333AMDREP part is unused and in its original packaging.
Return procedure for OPA2333AMDREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2333AMDREP Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
