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Texas Instruments OPA2375IDDFR
- Part No.:
- OPA2375IDDFR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
OPA2375IDDFR.pdf
- Description:
- IC CMOS 2 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:14,336
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Product details
Overview
OPA2375IDDFR from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier optimized for precision low-noise signal conditioning in space-constrained, low-voltage systems. It delivers 3.5 nV/√Hz input voltage noise, 10-MHz gain bandwidth, ±0.5-mV maximum input offset voltage, and operates from 1.7 V to 5.5 V supply - enabling high-fidelity sensor front-ends and ADC driver stages in wearable medical and industrial instrumentation.
For engineers reviewing the OPA2375IDDFR datasheet, OPA2375IDDFR pinout, OPA2375IDDFR application, or OPA2375IDDFR equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS886E production data sheet (Rev. E, August 2021) and official orderable information.
Technical Context
The OPA2375IDDFR implements a unity-gain-stable, fully differential CMOS input stage with integrated RFI/EMI rejection filtering and no phase reversal under overdrive. Its resistive open-loop output impedance enables stable operation into ≥100 pF capacitive loads without external compensation.
It features robust electrostatic discharge protection (2-kV HBM), low input bias current (±3 pA typical), and ultra-low offset drift (±0.16 µV/°C) across –40°C to +125°C - making it suitable for high-impedance photodiode amplifiers and precision analog signal chains where thermal stability and noise integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - supports stable closed-loop operation up to 10× gain at 1 MHz or unity gain at 10 MHz, ideal for wideband sensor signal conditioning. |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - enables high-resolution measurement of low-level signals (e.g., photodiode currents & strain gauge outputs) without dominating system noise floor. |
| Max Input Offset Voltage | ±0.5 mV - ensures ≤0.5 mV DC error at room temperature, reducing calibration burden in precision 16-bit+ ADC interfaces. |
| Supply Voltage Range | 1.7 V to 5.5 V - supports direct integration into single-cell Li-ion (3.0–3.7 V), coin-cell (1.8–3.0 V), and 3.3-V/5-V logic-supplied systems. |
| Rail-to-Rail Output Swing | Within 5–14 mV of rails (RL = 10 kΩ, VS = 5.5 V) - maximizes dynamic range in low-voltage single-supply configurations, preserving >99% of available headroom. |
| Quiescent Current | 990 µA per channel - balances ultra-low power consumption with high-speed performance, enabling battery-operated portable instrumentation with >100-hour runtime. |
| THD+N | 0.00015% at 1 kHz - preserves signal fidelity in audio preamplifiers and medical bio-signal acquisition paths requiring <–110 dB distortion. |
Pinout & Package
The OPA2375IDDFR is packaged in an 8-pin SOT-23 (DDF) with body size 1.60 mm × 2.90 mm - optimized for high-density PCB layouts in portable and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT1 | Output, Channel 1 | Amplified output signal for first op-amp; rail-to-rail swing supports full-scale utilization of downstream ADC reference. |
| 2 - IN1– | Inverting Input, Channel 1 | Differential input node for channel 1; CMOS input enables high-impedance sensor interfacing (e.g., pH electrodes, thermopiles). |
| 3 - IN1+ | Noninverting Input, Channel 1 | Reference-side input for channel 1; matched with IN1– for precise common-mode rejection in differential configurations. |
| 4 - V– | Negative Supply / Ground | Lowest potential node; must be connected to system ground or negative rail; serves as return path for both channels. |
| 5 - IN2+ | Noninverting Input, Channel 2 | Independent input for second op-amp; allows dual-path signal processing (e.g., active filter + buffer) without cross-talk. |
| 6 - IN2– | Inverting Input, Channel 2 | Second differential input pair; identical electrical characteristics to channel 1 inputs for matched performance. |
| 7 - OUT2 | Output, Channel 2 | Second independent output; enables simultaneous buffering, gain staging, or differential drive without external components. |
| 8 - V+ | Positive Supply | Highest potential node; supplies both amplifiers; decoupling capacitor required within 1 cm for stable high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low broadband noise | 3.5 nV/√Hz at 10 kHz - directly reduces integrated RMS noise in 100-Hz–100-kHz sensor bandwidths, improving SNR by ≥6 dB vs. 7-nV/√Hz alternatives. |
| Rail-to-rail output | 5–14 mV headroom at 10-kΩ load - eliminates need for level-shifting circuitry in 3.3-V microcontroller ADC interfaces, simplifying BOM and layout. |
| Unity-gain stable | No external compensation required - enables immediate use in voltage-follower, active filter, and transimpedance configurations without stability analysis. |
| Integrated RFI/EMI rejection | 51-dB EMI rejection ratio at 1 GHz - suppresses cellular/WiFi interference in unshielded wearable designs without added ferrites or RC filters. |
| Low offset drift | ±0.16 µV/°C - contributes <±0.02 mV total drift over 0–70°C ambient, minimizing calibration frequency in field-deployed instrumentation. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or environmental light sensors. IC Role / Device Role: Transimpedance amplifier (TIA) with low input bias current (±3 pA) and low voltage noise to preserve signal integrity. Use Value: Enables detection of sub-picoamp photocurrents while maintaining >100-dB dynamic range and minimal dark-current error. |
Use Scenario: Conditioning output from MEMS accelerometers, RTDs, or bridge-based pressure sensors in industrial IoT nodes. IC Role / Device Role: Low-drift, low-noise instrumentation amplifier front-end with rail-to-rail output driving SAR ADCs. Use Value: Delivers <±0.01% gain error and <1-µV offset shift over temperature - eliminating per-unit calibration in volume production. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
Use Scenario: Driving 16-bit+ successive-approximation register (SAR) ADCs in portable test equipment and data loggers. IC Role / Device Role: High-speed, low-distortion buffer with 10-MHz GBW and 0.00015% THD+N to prevent aperture uncertainty and harmonic aliasing. Use Value: Ensures ENOB ≥15.2 bits at 100-kSPS sampling, meeting metrology-grade accuracy requirements without oversampling. |
Use Scenario: Signal conditioning in compact fitness trackers, hearables, and smart patches with strict size and battery-life constraints. IC Role / Device Role: Dual-channel analog front-end for ECG/PPG sensing and motion sensor fusion, operating from 1.8-V coin cell. Use Value: 990-µA/channel IQ and 1.7-V minimum supply extend battery life beyond 7 days while maintaining clinical-grade signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376IDGKR | Lower input voltage noise (2.8 nV/√Hz), higher IQ (1.3 mA/ch), same 10-MHz GBW and 1.7–5.5-V supply range. | Better suited for ultra-low-noise photodiode or microphone preamps where power budget allows +30% IQ increase. | Select OPA2376IDGKR when noise dominates system error budget and board space permits larger DGK (VSSOP-8) package. |
| MCP6V82-E/SN | Higher max offset (±125 µV), lower GBW (1.5 MHz), zero-drift architecture, 1.8–5.5-V supply, 600-µA/ch IQ. | Preferred for DC-critical applications (e.g., weigh scales, thermocouple amps) requiring near-zero long-term drift, not wideband fidelity. | Choose MCP6V82-E/SN only when µV-level DC stability outweighs bandwidth and noise requirements - not a drop-in replacement. |
Compared with OPA2375IDDFR, OPA2376IDGKR trades modest IQ increase for measurable noise reduction in high-gain sensor paths, while MCP6V82-E/SN abandons bandwidth and noise performance to achieve zero-drift behavior - making each suitable only for distinct design priorities.
Availability
OPA2375IDDFR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver amplifiers requiring stable component supply, consistent parametric performance, and long-term manufacturability assurance.
Supply support for OPA2375IDDFR 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 expertise in precision op-amps, data converters, and power management ICs.
The OPAx375 family was designed specifically for cost-sensitive, battery-powered precision analog signal chains - balancing ultra-low noise, rail-to-rail operation, and wide supply flexibility in miniature packages like the OPA2375IDDFR's SOT-23-8.
FAQ
What is the maximum operating temperature range for the OPA2375IDDFR?
The OPA2375IDDFR is specified over an operating ambient temperature range of –40°C to +125°C. This extended range enables reliable deployment in automotive under-hood modules, industrial motor drives, and outdoor environmental sensors where thermal extremes are routine. All key parameters - including offset voltage, gain bandwidth, and quiescent current - are guaranteed across this full span per TI's SBOS886E datasheet.
Does the OPA2375IDDFR include shutdown functionality?
No, the OPA2375IDDFR does not include shutdown pins. Shutdown capability is only present in the OPA2375S variant (e.g., OPA2375SRUGR), which uses a 10-pin X2QFN package with dedicated SHDN1/SHDN2 terminals. The OPA2375IDDFR is a standard dual op-amp without enable/disable control - its quiescent current remains fixed at 990 µA per channel during operation.
Can the OPA2375IDDFR drive capacitive loads without oscillation?
Yes, the OPA2375IDDFR features a resistive open-loop output impedance that enables stable operation into ≥100 pF capacitive loads without external isolation resistors or compensation networks. TI's characterization confirms <5% overshoot at 100-pF load with 100-mV step response - a key advantage over many CMOS op-amps requiring careful layout or series resistance to maintain phase margin.
What is the input common-mode voltage range of the OPA2375IDDFR?
The OPA2375IDDFR supports an input common-mode voltage range from V– to (V+ – 1.2 V) across its full supply range (1.7 V to 5.5 V). At 5.5-V supply, this yields a usable range of 0 V to 4.3 V - allowing direct interface with 0–3.3-V microcontroller I/O and single-ended sensors referenced to ground or mid-supply, without level-shifting circuitry.
Is the OPA2375IDDFR pin-compatible with other dual op-amps in SOT-23-8?
No, the OPA2375IDDFR uses TI's proprietary dual-op-amp pinout in SOT-23-8 (OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, V+), which differs from industry-standard pinouts such as the LMV358 or MCP6022. Direct substitution requires PCB layout revision. Always verify pin mapping using Table 6-2 in the SBOS886E datasheet before board redesign.
OPA2375IDDFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.6V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 990µA
- Current - Output / Channel:
- 68 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
OPA2375IDDFR FAQ
1.How can I place an order for OPA2375IDDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375IDDFR 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 OPA2375IDDFR reliable?
The price and inventory of OPA2375IDDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375IDDFR is usually 5 days.
3.What payment methods are accepted for OPA2375IDDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375IDDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375IDDFR?
OPA2375IDDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375IDDFR 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 OPA2375IDDFR?
For technical support, including OPA2375IDDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375IDDFR requirements.
6.How does Aetrix verify that OPA2375IDDFR is sourced from the original manufacturer or authorized distributors?
All OPA2375IDDFR 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 OPA2375IDDFR meets industry standards.
7.What is the process for return or replacement of OPA2375IDDFR?
All OPA2375IDDFR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375IDDFR, 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 OPA2375IDDFR part is unused and in its original packaging.
Return procedure for OPA2375IDDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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