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Texas Instruments OPA2375IDSGR
- Part No.:
- OPA2375IDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
OPA2375IDSGR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,820
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Product details
Overview
OPA2375IDSGR from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier optimized for low-noise precision 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. It is widely used in photodiode amplifiers and ADC input-driver stages requiring high fidelity at low supply voltage.
For engineers reviewing the OPA2375IDSGR datasheet, OPA2375IDSGR pinout, OPA2375IDSGR application, or OPA2375IDSGR 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).
Technical Context
The OPA2375IDSGR 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 two independent amplifiers sharing a common supply domain, each with rail-to-rail output swing (within 5–14 mV of rails at 5.5 V), low input bias current (±3 pA typ), and ultra-low THD+N (0.00015% at 1 kHz). The device supports shutdown via dedicated SHDN1/SHDN2 pins with 15-µs enable time and sub-3.5-µA quiescent current per channel in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - Enables stable closed-loop operation up to 10× gain at 1 MHz or unity gain at 10 MHz, suitable for anti-aliasing and active filter design. |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - Critical for preserving SNR in low-level sensor front-ends like photodiodes or strain gauges. |
| Max Input Offset Voltage | ±0.5 mV - Ensures ≤0.5-mV DC error in precision DC-coupled paths without trimming, e.g., medical instrumentation signal chains. |
| Supply Range | 1.7 V to 5.5 V - Supports direct interfacing with Li-ion, single-cell alkaline, and 3.3-V/5-V logic domains without level-shifting. |
| THD+N | 0.00015% at 1 kHz - Meets audio-grade linearity requirements for wearable consumer devices and portable test equipment. |
| Quiescent Current | 990 µA per channel - Balances low-power operation with high-speed performance in battery-powered embedded systems. |
| Offset Drift | ±0.16 µV/°C - Minimizes thermal drift-induced errors across –40°C to +125°C industrial temperature range. |
Pinout & Package
OPA2375IDSGR is packaged in an 8-pin WSON (DSG) with exposed thermal pad (2.0 mm × 2.0 mm body), optimized for thermal performance and PCB area efficiency in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of Channel 1 - Rail-to-rail capable; connects directly to ADC input or next-stage buffer without level shift. |
| 2 | V– | Negative supply / ground reference - Must be connected to system ground or negative rail; thermal pad tied to this node for optimal heat dissipation. |
| 3 | IN1– | Inverting input, Channel 1 - Used in inverting configurations or as feedback node; high-impedance CMOS input (10 GΩ || 6 pF). |
| 4 | IN1+ | Noninverting input, Channel 1 - Accepts high-Z sensor signals (e.g., photodiode cathode); common-mode range extends to V–. |
| 5 | IN2+ | Noninverting input, Channel 2 - Independent of Channel 1; enables dual-sensor or differential pair processing on single die. |
| 6 | IN2– | Inverting input, Channel 2 - Matches IN1– electrical characteristics; supports matched gain-setting networks. |
| 7 | OUT2 | Output of Channel 2 - Fully independent output; allows simultaneous dual-path signal conditioning with shared supply. |
| 8 | V+ | Positive supply - Accepts 1.7–5.5 V; internal ESD protection (2-kV HBM) reduces need for external TVS diodes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 5 mV of rails at 5.5 V/10 kΩ load - Maximizes dynamic range in single-supply systems, eliminating need for negative rail generation. |
| Integrated RFI/EMI rejection filter | Rejects >51 dB of 1-GHz interference - Reduces susceptibility to wireless noise in IoT edge nodes and wearable electronics without external LC filters. |
| Unity-gain stability | Stable with gain ≥1 and ≥100-pF capacitive load - Simplifies layout by removing need for isolation resistors or compensation networks in ADC driver applications. |
| Low input bias current | ±3 pA typical - Enables use with high-impedance sources (>100 MΩ), such as piezoelectric sensors or pH electrodes, without significant DC error. |
| Shutdown control | Dedicated SHDN1/SHDN2 pins with 3-µs disable time - Allows per-channel power gating in multi-stage analog signal chains to reduce system-level quiescent power. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
|
Use Scenario: Converting weak current from silicon photodiodes (e.g., in pulse oximeters or spectrophotometers) into stable, low-noise voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input bias current and ultra-low voltage noise to preserve signal integrity at sub-nA levels. Use Value: 3.5 nV/√Hz noise floor and ±3 pA input bias current minimize Johnson and shot noise contributions, enabling detection of <100-pA photocurrents. |
Use Scenario: Conditioning outputs from MEMS accelerometers, RTDs, or bridge-based pressure sensors in industrial monitoring systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail output and low offset drift for accurate DC-coupled measurement. Use Value: ±0.16 µV/°C offset drift and ±0.5-mV max VOS ensure <1-µV total drift over –40°C to +85°C, critical for unattended long-term calibration stability. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
|
Use Scenario: Driving SAR or delta-sigma ADC inputs in portable data loggers where sampling rate, resolution, and power are tightly constrained. IC Role / Device Role / Timing Role: Buffer and level-shifter between sensor and ADC, providing fast settling (0.65 µs to 0.1%) and low THD+N. Use Value: 0.65-µs 0.1% settling time and 0.00015% THD+N prevent harmonic distortion and aperture uncertainty, preserving ENOB in 16-bit+ conversions. |
Use Scenario: Signal conditioning in hearables, smartwatches, or fitness bands where size, battery life, and EMI immunity are paramount. IC Role / Device Role / Timing Role: Dual-channel analog front-end for biopotential (ECG/EMG) and environmental (temperature/humidity) sensing. Use Value: 2.0 mm × 2.0 mm WSON package saves PCB area; 990 µA/ch IQ and 1.7-V minimum supply extend battery runtime in coin-cell-powered designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376IDGKR | Lower input voltage noise (2.8 nV/√Hz), higher IQ (1.5 mA/ch), no shutdown pins | Better SNR in ultra-low-noise applications; unsuitable where per-channel power gating is required | Select when noise dominates over power; avoid if shutdown functionality or WSON footprint is mandatory |
| TLV9062IDSGR | Higher GBW (10 MHz same), lower IQ (560 µA/ch), no EMI filter, ±0.8-mV VOS max | Lower power consumption but higher offset and no integrated RFI rejection - requires external filtering in noisy environments | Select for cost-sensitive, low-power applications where EMI immunity is managed at board level; verify offset budget tolerance |
Compared with OPA2375IDSGR, OPA2376IDGKR offers superior noise performance at higher quiescent current and no shutdown capability, while TLV9062IDSGR trades noise and EMI robustness for lower power and cost - making OPA2375IDSGR the balanced choice for dual-channel, low-noise, low-voltage, and EMI-hardened designs.
Availability
OPA2375IDSGR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver applications requiring stable component supply, consistent parametric performance, and long-term manufacturability assurance.
Supply support for OPA2375IDSGR 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 and signal-chain solutions.
The OPAx375 family was designed specifically for cost-sensitive, low-voltage, high-fidelity analog signal conditioning in portable, medical, and industrial instrumentation - emphasizing low noise, rail-to-rail operation, and robust EMI immunity without sacrificing speed.
FAQ
What is the maximum operating temperature range for the OPA2375IDSGR?
The OPA2375IDSGR is specified over an industrial temperature range of –40°C to +125°C. This rating is confirmed in Section 7.3 (Recommended Operating Conditions) of the TI SBOS886E datasheet, and thermal metrics (e.g., RθJA = 78.2°C/W for DSG package) support reliable operation at full range with appropriate PCB copper area.
Does the OPA2375IDSGR support single-supply operation?
Yes, the OPA2375IDSGR supports true single-supply operation from 1.7 V to 5.5 V. Its input common-mode range extends to V– (ground), and its rail-to-rail output swings within 5 mV of both rails at 5.5 V, enabling direct interface with microcontrollers and ADCs powered from the same supply - as verified in Sections 7.3 and 7.6 of the official datasheet.
What is the function of the exposed thermal pad on the OPA2375IDSGR WSON package?
The exposed thermal pad on the OPA2375IDSGR (DSG package) must be soldered to the PCB and connected to the V– pin to maximize thermal performance. Per Section 6.3 (Pin Functions) and Section 7.5 (Thermal Information), this connection lowers junction-to-board thermal resistance to 44.6°C/W, improving power dissipation and long-term reliability under continuous operation.
Can the OPA2375IDSGR drive capacitive loads without oscillation?
Yes - the OPA2375IDSGR is unity-gain stable and can safely drive ≥100 pF capacitive loads without external compensation, as demonstrated in Figure 7-25 (Small-Signal Overshoot vs Load Capacitance) and stated in Section 3 (Description) of the datasheet. Its resistive open-loop output impedance enables this robustness, unlike many CMOS op amps requiring series isolation resistors.
How does the shutdown feature work on the OPA2375IDSGR?
The OPA2375IDSGR includes dedicated SHDN1 and SHDN2 pins (pins 2 and 3 in X2QFN variant, not present in DSG). However, the DSG-packaged OPA2375IDSGR does not include shutdown functionality - only the OPA2375S variants (e.g., OPA2375SRUGR) do. This distinction is explicitly noted in Tables 6-2 and 6-3 of the SBOS886E datasheet, confirming OPA2375IDSGR is always active.
OPA2375IDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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-WSON (2x2)
OPA2375IDSGR FAQ
1.How can I place an order for OPA2375IDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375IDSGR 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 OPA2375IDSGR reliable?
The price and inventory of OPA2375IDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375IDSGR is usually 5 days.
3.What payment methods are accepted for OPA2375IDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375IDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375IDSGR?
OPA2375IDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375IDSGR 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 OPA2375IDSGR?
For technical support, including OPA2375IDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375IDSGR requirements.
6.How does Aetrix verify that OPA2375IDSGR is sourced from the original manufacturer or authorized distributors?
All OPA2375IDSGR 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 OPA2375IDSGR meets industry standards.
7.What is the process for return or replacement of OPA2375IDSGR?
All OPA2375IDSGR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375IDSGR, 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 OPA2375IDSGR part is unused and in its original packaging.
Return procedure for OPA2375IDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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