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Texas Instruments OPA2375IDR
- Part No.:
- OPA2375IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2375IDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,167
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Product details
Overview
OPA2375IDR from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier optimized for precision low-noise signal conditioning in space- and power-constrained 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-end amplification in wearable medical devices and portable instrumentation.
For engineers reviewing the OPA2375IDR datasheet, OPA2375IDR pinout, OPA2375IDR application, or OPA2375IDR equivalent, key selection criteria include its low 990 µA/channel quiescent current, ±0.16 µV/°C offset drift, rail-to-rail output swing within 5 mV of rails (at 10-kΩ load), unity-gain stability, and robust EMI rejection - all validated across –40°C to +125°C.
Technical Context
The OPA2375IDR implements a complementary metal-oxide-semiconductor (CMOS) input stage with ultra-low input bias current (±3 pA typ) and integrated RFI/EMI rejection filtering. Its resistive open-loop output impedance enables stable operation into capacitive loads up to 100 pF without external compensation.
This dual op amp features no phase reversal under overdrive and supports single-supply operation down to 1.7 V. It is specified with 2-kV HBM ESD protection and exhibits 51-dB electromagnetic interference rejection ratio at 1 GHz - critical for noisy industrial or portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - supports stable closed-loop gain ≥1 with ≤1% gain error up to 10 MHz (e.g., active filters, ADC drivers). |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - preserves SNR in photodiode and precision sensor interfaces where broadband noise dominates. |
| Max Input Offset Voltage | ±0.5 mV - limits DC error to <0.5% of full-scale in 1-V output ranges without trimming. |
| Quiescent Current per Channel | 990 µA - enables dual-channel precision amplification in battery-powered systems with <2 mA total supply current. |
| Rail-to-Rail Output Swing | Within 5 mV of rails (at 10 kΩ) - maximizes dynamic range in 1.8-V or 3.3-V single-supply data acquisition systems. |
| Offset Voltage Drift | ±0.16 µV/°C - contributes <2 µV total drift over 125°C temperature span, suitable for uncalibrated industrial sensors. |
| Supply Voltage Range | 1.7 V to 5.5 V - supports direct interfacing with Li-ion, coin-cell, and standard logic supplies without LDOs. |
Pinout & Package
OPA2375IDR is packaged in an 8-pin SOIC (D) with 3.91 mm × 4.90 mm body size and standard JEDEC MS-012 footprint. Pin 1 is OUT1; pin 4 is V–; pin 5 is IN2+; pin 8 is V+. Thermal pad is not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of channel 1 - drives ADC inputs or downstream buffers with rail-to-rail swing and low output impedance. |
| 2 | IN1– | Inverting input of channel 1 - used in transimpedance or differential configurations with matched PCB routing. |
| 3 | IN1+ | Noninverting input of channel 1 - accepts high-impedance sensor signals (e.g., thermopiles, pH electrodes) with <3 pA bias current. |
| 4 | V– | Negative supply or ground reference - must be low-impedance; decoupling capacitor required near pin. |
| 5 | IN2+ | Noninverting input of channel 2 - enables dual-sensor conditioning (e.g., differential pressure + temperature) on one IC. |
| 6 | IN2– | Inverting input of channel 2 - paired with IN2+ for matched gain-setting resistor networks. |
| 7 | OUT2 | Output of channel 2 - independent output path; no crosstalk >130 dB at 20 kHz ensures isolated signal chains. |
| 8 | V+ | Positive supply - accepts 1.7–5.5 V; internal regulation ensures PSRR >87 dB across operating range. |
Key Features
| Feature | Design Value |
|---|---|
| Low broadband noise | 3.5 nV/√Hz at 10 kHz - maintains resolution in 16-bit+ SAR ADC driver stages without noise floor degradation. |
| Rail-to-rail output | Swings to within 5 mV of V+ and V– at 10-kΩ load - recovers full 1.7-V supply headroom for maximum signal fidelity. |
| Unity-gain stable | No external compensation required - simplifies layout for gain-of-1 buffer, I/V conversion, and active filtering. |
| Integrated EMI rejection filter | 51-dB rejection at 1 GHz - suppresses cellular/WiFi interference in portable medical monitors without added shielding. |
| High CMRR | 100 dB at 5.5 V supply - rejects common-mode noise from shared sensor grounds or noisy digital domains. |
| Low input bias current | ±3 pA typical - prevents voltage error in high-Z sources (>100 MΩ), such as piezoelectric or electrochemical sensors. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
Use Scenario: Converting weak current from silicon photodiodes in pulse oximeters or environmental light sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current and low noise to preserve photocurrent SNR. Use Value: 3.5 nV/√Hz noise and ±3 pA input bias enable sub-picoamp current detection with minimal added error. |
Use Scenario: Conditioning outputs from RTDs, strain gauges, or MEMS accelerometers in industrial IoT nodes. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing matched gain/offset correction before multiplexed ADC sampling. Use Value: ±0.16 µV/°C drift and 100-dB CMRR ensure stable calibration over temperature without frequent recalibration. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
Use Scenario: Driving SAR ADC inputs in portable data loggers requiring fast settling and low distortion. IC Role / Device Role / Timing Role: Unity-gain buffer with 0.65-µs 0.1% settling time and 0.00015% THD+N to prevent harmonic aliasing. Use Value: 10-MHz GBW and rail-to-rail output ensure full-scale step response fidelity into 1-MSPS ADCs. |
Use Scenario: Biopotential signal amplification (ECG, EMG) in compact fitness trackers with coin-cell power. IC Role / Device Role / Timing Role: Low-power dual op amp powering both instrumentation and reference buffering stages. Use Value: 990 µA/channel IQ and 1.7-V minimum supply extend battery life while maintaining clinical-grade signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02 µV/°C drift vs. OPA2375IDR's ±0.16 µV/°C; higher 17-µV max VOS; 350-kHz GBW | Better for DC-critical applications (e.g., weigh scales); unsuitable for >100-kHz signal paths due to lower bandwidth | Select OPA2333AIDR only when ultra-low drift dominates over speed and noise requirements. |
| LMV722IDR | Higher 10-nV/√Hz noise; 10-MHz GBW; 1.8-V min supply; no EMI filter; 1.25-mV max VOS | Acceptable for cost-sensitive consumer audio; lacks EMI immunity and precision drift specs needed in medical use | Choose LMV722IDR only for non-critical, noise-tolerant, high-volume consumer designs where EMI rejection is not required. |
Compared with OPA2375IDR, OPA2333AIDR trades bandwidth and noise for near-zero drift, while LMV722IDR sacrifices noise performance and EMI immunity for lower cost - making OPA2375IDR the balanced choice for precision, speed, and robustness in portable instrumentation.
Availability
OPA2375IDR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver amplifiers requiring stable component supply across automotive, industrial, and medical production programs.
Supply support for OPA2375IDR 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPAx375 family was designed for high-accuracy, low-power signal conditioning in battery-operated and space-constrained systems - balancing noise, bandwidth, and supply flexibility without sacrificing DC precision.
FAQ
What is the maximum operating temperature for the OPA2375IDR?
The OPA2375IDR is fully specified from –40°C to +125°C ambient temperature. Its electrical characteristics - including offset voltage drift (±0.16 µV/°C), CMRR (≥87 dB), and quiescent current (≤1250 µA/channel) - are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive and factory-floor applications.
Does the OPA2375IDR support single-supply operation?
Yes, the OPA2375IDR supports true single-supply operation from 1.7 V to 5.5 V. Its rail-to-rail output swings within 5 mV of both supply rails at 10-kΩ load, and its input common-mode range extends to V– (ground) and within 1.2 V of V+, enabling direct interfacing with microcontrollers and ADCs powered from the same supply.
Is the OPA2375IDR unity-gain stable?
Yes, the OPA2375IDR is internally compensated for unity-gain stability. It achieves ≥55° phase margin with 10-kΩ load and 20-pF capacitive load, eliminating the need for external compensation components in buffer, follower, or gain-of-1 transimpedance configurations - verified per Figure 7-9 in the SBOS886E datasheet.
What package type is used for the OPA2375IDR?
The OPA2375IDR uses an 8-pin SOIC (D) package with 3.91 mm × 4.90 mm body dimensions and standard JEDEC MS-012 outline. It has no exposed thermal pad and is compatible with conventional reflow soldering profiles - confirmed in Section 13 of the SBOS886E datasheet and TI's orderable addendum.
How does the OPA2375IDR handle EMI in noisy environments?
The OPA2375IDR integrates an on-chip RFI/EMI rejection filter, delivering 51 dB of rejection at 1 GHz. This feature is validated in typical characteristics (Figure 7-28) and enables reliable operation in proximity to cellular radios, switching power supplies, and motor drives - without requiring external ferrite beads or shielded enclosures.
OPA2375IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
OPA2375IDR FAQ
1.How can I place an order for OPA2375IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375IDR 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 OPA2375IDR reliable?
The price and inventory of OPA2375IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375IDR is usually 5 days.
3.What payment methods are accepted for OPA2375IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375IDR?
OPA2375IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375IDR 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 OPA2375IDR?
For technical support, including OPA2375IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375IDR requirements.
6.How does Aetrix verify that OPA2375IDR is sourced from the original manufacturer or authorized distributors?
All OPA2375IDR 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 OPA2375IDR meets industry standards.
7.What is the process for return or replacement of OPA2375IDR?
All OPA2375IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375IDR, 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 OPA2375IDR part is unused and in its original packaging.
Return procedure for OPA2375IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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