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Texas Instruments OPA2375SIRUGR
- Part No.:
- OPA2375SIRUGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-XFQFN
- Datasheet:
-
OPA2375SIRUGR.pdf
- Description:
- IC CMOS 2 CIRCUIT 10X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:460
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Product details
Overview
OPA2375SIRUGR from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier optimized for low-voltage, low-noise precision applications. It delivers 10-MHz gain bandwidth, 3.5 nV/√Hz input voltage noise at 10 kHz, ±0.5-mV maximum input offset voltage, and operates from 1.7 V to 5.5 V supply. It is used in photodiode amplifiers and ADC input-driver circuits requiring high fidelity at ultra-low power.
For engineers reviewing the OPA2375SIRUGR datasheet, OPA2375SIRUGR pinout, OPA2375SIRUGR application, or OPA2375SIRUGR equivalent, key selection criteria include its 990-µA per-channel quiescent current, 10-MHz GBW with unity-gain stability, shutdown control on both channels, and X2QFN-10 package with exposed thermal pad for thermal performance in space-constrained sensor front-ends.
Technical Context
The OPA2375SIRUGR implements a 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 independent shutdown pins (SHDN1, SHDN2) enabling channel-level power gating, and supports single-supply operation down to 1.7 V with rail-to-rail output swing within 5 mV of each rail at 10-kΩ load - critical for low-voltage data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - enables stable unity-gain operation and supports closed-loop bandwidths up to ~9 MHz in precision signal conditioning. |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - ensures minimal added noise in photodiode and sensor front-end amplification. |
| Max Input Offset Voltage | ±0.5 mV - supports DC-coupled precision measurement without trimming in industrial sensor interfaces. |
| Quiescent Current | 990 µA per channel - balances low-power operation with wide bandwidth for battery-powered instrumentation. |
| Supply Voltage Range | 1.7 V to 5.5 V - allows direct interfacing with Li-ion, coin-cell, and 3.3-V/5-V logic domains. |
| Output Swing | Within 5 mV of rails (at 10 kΩ) - maximizes dynamic range in single-supply 12-bit+ ADC driver applications. |
| THD+N | 0.00015% at 1 kHz - preserves signal integrity in audio and medical waveform amplification. |
Pinout & Package
The OPA2375SIRUGR is housed in a 10-pin X2QFN package (1.5 mm × 2.0 mm) with an exposed thermal pad connected to V– for enhanced thermal dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V– | Negative supply / ground reference | Primary return path; thermal pad must be soldered to PCB ground plane for optimal θJA = 140.3°C/W. |
| SHDN1 | Digital shutdown control (channel 1) | Logic high (> V– + 1.1 V) enables channel 1; low disables output and reduces IQ to ≤3.5 µA. |
| SHDN2 | Digital shutdown control (channel 2) | Independent enable/disable for channel 2; supports asymmetric power management in dual-sensor systems. |
| IN2+ | Noninverting input (channel 2) | High-impedance CMOS node (10 GΩ || 6 pF); compatible with high-Z sources like piezoresistive sensors. |
| IN2– | Inverting input (channel 2) | Matches IN2+ in bias current (±3 pA typ), minimizing offset error in transimpedance configurations. |
| OUT2 | Amplifier output (channel 2) | Rail-to-rail capable; drives 10-kΩ loads to within 5 mV of rails - suitable for driving SAR ADC inputs directly. |
| V+ | Positive supply | Accepts 1.7–5.5 V; PSRR of 94 dB at 5.5 V suppresses supply ripple in noisy embedded environments. |
| OUT1 | Amplifier output (channel 1) | Electrically isolated from OUT2; enables independent signal paths without crosstalk (130 dB channel separation at 20 kHz). |
| IN1– | Inverting input (channel 1) | Paired with IN1+ for differential gain stages; input offset drift ±0.16 µV/°C ensures stability across –40°C to 125°C. |
| IN1+ | Noninverting input (channel 1) | Same input structure as IN2+; supports matched dual-channel front-ends for differential sensor readout. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers full supply-range swing (within 5 mV of rails) at 10-kΩ load - maximizes usable ADC input range in 3.3-V systems. |
| Integrated EMI rejection filter | Suppresses 1-GHz interference with 51-dB EMIRR - eliminates external RF filtering in wearable and industrial IoT designs. |
| Unity-gain stable | Operates unconditionally stable at G = +1 without external compensation - simplifies layout and reduces BOM count. |
| Shutdown mode (dual independent) | Reduces per-channel IQ from 990 µA to ≤3.5 µA - extends battery life in intermittent-sampling sensor nodes. |
| High ESD protection | ±2000-V HBM rating - withstands handling and board-level ESD events without guard rings or external TVS diodes. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
Use Scenario: Converting weak current from silicon photodiodes in optical smoke detectors or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (±3 pA) and ultra-low voltage noise (3.5 nV/√Hz). Use Value: Enables detection of sub-nA photocurrents while maintaining >100-dB dynamic range and <0.00015% THD+N at 1 kHz. | Use Scenario: Conditioning signals from strain gauges, RTDs, or MEMS accelerometers in industrial condition monitoring. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with rail-to-rail output for 16-bit ADC interfacing. Use Value: ±0.16 µV/°C offset drift and 10-MHz GBW support accurate DC and AC measurements across –40°C to 125°C. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
Use Scenario: Driving SAR or delta-sigma ADC inputs in portable data loggers and handheld test equipment. IC Role / Device Role / Timing Role: Buffer and level-shifter ensuring fast settling (<1.2 µs to 0.01%) and minimal code-dependent distortion. Use Value: 0.65-µs settling to 0.1% and 4.6-V/µs slew rate prevent missing codes during high-speed sampling at ≥1 MSPS. | Use Scenario: Biopotential signal amplification (ECG, EMG) in compact, battery-powered wearables. IC Role / Device Role / Timing Role: Dual-channel, low-IQ (990 µA/ch) amplifier supporting independent channel shutdown for adaptive power management. Use Value: X2QFN-10 package (1.5 × 2.0 mm) and 1.7-V minimum supply extend runtime while fitting inside wristband form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376AIDR | Lower input offset (±25 µV max), higher IQ (1.5 mA/ch), no shutdown pins | Better DC accuracy but no power gating; unsuitable for duty-cycled sensor nodes | Select when ultra-low offset dominates over power savings and channel independence. |
| TLV9062IDR | Higher GBW (10.6 MHz), lower cost, no shutdown, higher input bias current (±1.2 pA) | Good general-purpose replacement but lacks EMI filtering and thermal pad for high-density layouts | Select for cost-sensitive, non-EMI-critical applications where shutdown and thermal performance are secondary. |
Compared with OPA2375SIRUGR, OPA2376AIDR trades shutdown capability and thermal efficiency for superior DC precision, while TLV9062IDR offers marginal speed gain at the expense of EMI robustness and power control - making OPA2375SIRUGR optimal for space-constrained, low-power, noise-immune dual-channel sensing.
Availability
OPA2375SIRUGR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver applications requiring stable component supply, long-term manufacturability, and guaranteed traceable sourcing.
Supply support for OPA2375SIRUGR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx375 family was designed for precision, low-noise, low-voltage signal conditioning in space- and power-constrained applications - targeting sensor interfaces, portable instrumentation, and high-fidelity analog front-ends.
FAQ
What is the maximum operating temperature range for the OPA2375SIRUGR?
The OPA2375SIRUGR is specified over an ambient temperature range of –40°C to +125°C, with junction temperature limited to 150°C. This extended range supports deployment in automotive engine compartments, industrial motor drives, and outdoor environmental sensors where thermal resilience is critical. The device maintains its 10-MHz gain bandwidth and ±0.5-mV offset voltage specification across this full range.
Does the OPA2375SIRUGR require external compensation for unity-gain stability?
No, the OPA2375SIRUGR is unity-gain stable by design and requires no external compensation components. Its internal compensation ensures unconditional stability with ≥100-pF capacitive loads and maintains ≥55° phase margin at G = +1 with 10-kΩ load and 20-pF capacitance. This eliminates the need for feedback capacitors or isolation resistors in standard buffer and gain-of-one configurations.
How does the shutdown functionality work on the OPA2375SIRUGR?
The OPA2375SIRUGR features two independent shutdown pins (SHDN1 and SHDN2). Driving either pin low (≤ V– + 0.2 V) disables its respective amplifier channel, reducing quiescent current to ≤3.5 µA per channel. Logic high (≥ V– + 1.1 V) enables the channel. Enable/disable times are 15 µs (full) and 3 µs (disable), allowing rapid power cycling in time-sliced sensor systems without compromising signal integrity.
What is the thermal pad connection requirement for the OPA2375SIRUGR X2QFN package?
The exposed thermal pad on the OPA2375SIRUGR's X2QFN-10 package must be soldered to a PCB copper pour tied to the V– net. This connection lowers junction-to-board thermal resistance to 69.7°C/W and improves power dissipation capability. Failure to connect the pad degrades θJA from 140.3°C/W to >200°C/W, risking thermal runaway under continuous 990-µA/channel operation at elevated ambient temperatures.
Can the OPA2375SIRUGR drive a 10-kΩ load rail-to-rail at 1.8-V supply?
Yes, the OPA2375SIRUGR delivers rail-to-rail output swing within 14 mV of each rail when driving a 10-kΩ load at 1.8-V supply - meeting the "rail-to-rail output" specification across its full 1.7–5.5-V operating range. At 5.5-V supply, headroom tightens to 5 mV, enabling full utilization of 12-bit+ ADC input ranges in both low- and standard-voltage systems.
OPA2375SIRUGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-XFQFN
- 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 (x2 Channels)
- 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:
- 10-X2QFN (2x1.5)
OPA2375SIRUGR FAQ
1.How can I place an order for OPA2375SIRUGR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375SIRUGR 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 OPA2375SIRUGR reliable?
The price and inventory of OPA2375SIRUGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375SIRUGR is usually 5 days.
3.What payment methods are accepted for OPA2375SIRUGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375SIRUGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375SIRUGR?
OPA2375SIRUGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375SIRUGR 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 OPA2375SIRUGR?
For technical support, including OPA2375SIRUGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375SIRUGR requirements.
6.How does Aetrix verify that OPA2375SIRUGR is sourced from the original manufacturer or authorized distributors?
All OPA2375SIRUGR 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 OPA2375SIRUGR meets industry standards.
7.What is the process for return or replacement of OPA2375SIRUGR?
All OPA2375SIRUGR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375SIRUGR, 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 OPA2375SIRUGR part is unused and in its original packaging.
Return procedure for OPA2375SIRUGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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