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Texas Instruments OPA2375IPWR
- Part No.:
- OPA2375IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA2375IPWR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,936
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Product details
Overview
OPA2375IPWR 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 OPA2375IPWR datasheet, OPA2375IPWR pinout, OPA2375IPWR application, or OPA2375IPWR equivalent, key selection criteria include its ultra-low broadband noise performance at 1 kHz (3.5 nV/√Hz), rail-to-rail output swing within 5 mV of rails (at 10 kΩ load), low 990 µA per-channel quiescent current, and robust EMI rejection (51 dB at 1 GHz) - all validated across –40°C to +125°C.
Technical Context
The OPA2375IPWR implements a unity-gain-stable 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 dual independent amplifiers sharing a common supply domain, each with rail-to-rail output swing, low input bias current (±3 pA typ), and low input offset drift (±0.16 µV/°C). The device supports single-supply operation down to 1.7 V and includes internal electrostatic discharge protection rated at ±2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 10 MHz - supports stable closed-loop gain ≥1 up to 10 MHz, suitable for anti-aliasing filters and fast-settling ADC drivers. |
| Input Voltage Noise | 3.5 nV/√Hz at 10 kHz - enables high-resolution amplification of microvolt-level signals from photodiodes or strain gauges without significant noise degradation. |
| Input Offset Voltage | ±0.5 mV max - ensures ≤0.5 mV DC error at room temperature, critical for precision DC-coupled sensor interfaces. |
| Supply Voltage Range | 1.7 V to 5.5 V - allows direct interfacing with Li-ion battery (3.0–4.2 V), coin-cell (1.8–3.0 V), and 3.3 V/5 V logic domains without level-shifting. |
| Quiescent Current | 990 µA per channel - enables dual-channel precision amplification in always-on wearable sensors while maintaining sub-2 mA total supply current. |
| Output Swing | Within 5 mV of rails (at 10 kΩ) - maximizes dynamic range in single-supply systems, preserving >99.5% of full-scale ADC input range. |
| EMI Rejection Ratio | 51 dB at 1 GHz - suppresses RF interference from cellular/Wi-Fi transceivers, reducing need for external shielding in compact PCB layouts. |
Pinout & Package
OPA2375IPWR is packaged in an 8-pin TSSOP (PW) with body size 3.00 mm × 4.40 mm, optimized for thermal performance and board-space efficiency in high-density designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of Channel 1 - rail-to-rail capable, drives 10 kΩ load to within 5 mV of supply rails. |
| 2 | IN1– | Inverting input, Channel 1 - high-impedance CMOS node (10 GΩ || 6 pF), compatible with high-Z sensors. |
| 3 | IN1+ | Noninverting input, Channel 1 - matched to IN1– for <1 µV input offset; used for differential or single-ended configurations. |
| 4 | V– | Negative supply or ground reference - must be connected to system ground or negative rail; serves as common return for both channels. |
| 5 | IN2+ | Noninverting input, Channel 2 - electrically isolated from Channel 1; enables independent dual-sensor conditioning. |
| 6 | IN2– | Inverting input, Channel 2 - matched pair with IN2+; supports fully differential input stages when paired with external resistors. |
| 7 | OUT2 | Output of Channel 2 - identical AC/DC specs to OUT1; supports simultaneous dual-path signal processing. |
| 8 | V+ | Positive supply - accepts 1.7–5.5 V; powers both amplifiers; decoupling capacitor required near pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings to within 5 mV of V+ and V– at 10 kΩ load - preserves full signal swing in low-voltage single-supply systems. |
| Low broadband noise | 3.5 nV/√Hz at 10 kHz - minimizes added noise in photodiode and piezoelectric sensor amplifiers. |
| Unity-gain stable | No external compensation required for G = +1 configuration - simplifies layout and reduces BOM count in buffer applications. |
| Integrated EMI filter | 51 dB rejection at 1 GHz - mitigates RF rectification effects without adding external RC filters or ferrites. |
| Low input offset drift | ±0.16 µV/°C - limits temperature-induced DC error to <20 µV over 0–70°C ambient range. |
| High ESD protection | ±2000 V HBM - withstands handling and assembly stresses without latch-up or parametric shift. |
Applications
| Photodiode Amplifier | Precision Sensor Front-End |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or environmental light sensing. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input bias current (±3 pA) and low voltage noise (3.5 nV/√Hz) to maximize SNR. Use Value: Enables detection of sub-nA photocurrents with <0.5 mV DC offset error, supporting 16-bit+ resolution in portable health monitors. |
Use Scenario: Conditioning analog outputs from MEMS accelerometers, RTDs, or bridge-based pressure sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail output and low THD+N (0.00015%) for clean signal digitization. Use Value: Maintains linearity and dynamic range across –40°C to +125°C, eliminating calibration drift in industrial field transmitters. |
| ADC Input-Driver Amplifier | Wearable Consumer Application |
Use Scenario: Driving SAR or delta-sigma ADC inputs in portable test equipment and data loggers. IC Role / Device Role / Timing Role: Low-settling-time (0.65 µs to 0.1%) buffer with 10 MHz bandwidth and low output impedance. Use Value: Ensures full 16-bit accuracy without aperture jitter or settling errors, even at sampling rates up to 1 MSPS. |
Use Scenario: Biopotential signal acquisition in smartwatches and hearables (ECG, EMG). IC Role / Device Role / Timing Role: Dual-channel, low-power amplifier for simultaneous lead-I/lead-II ECG path conditioning. Use Value: Delivers 990 µA/channel quiescent current and 1.7 V minimum supply support - extends battery life in coin-cell-powered wearables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PWR | Lower offset drift (±0.02 µV/°C) but higher noise (8.5 nV/√Hz); 17 µA IQ per channel. | Better for ultra-stable DC measurements; unsuitable for low-noise AC signal chains. | Select OPA2333PWR only when long-term drift dominates noise budget; otherwise OPA2375IPWR provides superior noise/power trade-off. |
| TLV9062IDR | Higher GBW (10 MHz same), lower IQ (560 µA/ch), but higher noise (16 nV/√Hz) and no EMI filter. | Cost-sensitive, battery-limited apps where RF immunity is not required. | Choose TLV9062IDR for basic buffering where EMI rejection and sub-4 nV/√Hz noise are non-critical. |
Compared with OPA2333PWR and TLV9062IDR, the OPA2375IPWR uniquely balances ultra-low noise (3.5 nV/√Hz), rail-to-rail output, integrated EMI rejection, and sub-1 mA quiescent current - making it optimal for precision, low-power, RF-hostile environments like portable medical electronics.
Availability
OPA2375IPWR is available at Aetrix Electronics and suitable for photodiode amplifiers, precision sensor front-ends, and ADC input-driver amplifiers requiring stable component supply, extended temperature support (–40°C to +125°C), and consistent parametric performance across production lots.
Supply support for OPA2375IPWR 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-SNR applications - including wearable biosensors, portable instrumentation, and industrial field transmitters - where noise, power, and rail-to-rail performance intersect.
FAQ
What is the maximum operating temperature range for the OPA2375IPWR?
The OPA2375IPWR is specified over an operating ambient temperature range of –40°C to +125°C. This extended range is validated across all key parameters including input offset voltage, gain bandwidth, and quiescent current - ensuring reliable operation in automotive under-hood, industrial control, and outdoor instrumentation environments where thermal stress is present. The junction temperature limit remains 150°C.
Does the OPA2375IPWR support true rail-to-rail input common-mode range?
No, the OPA2375IPWR does not support rail-to-rail input. Its input common-mode voltage range is specified as (V–) to (V+) – 1.2 V. For example, with a 3.3 V single supply (V– = 0 V, V+ = 3.3 V), valid input voltages span 0 V to 2.1 V. This limitation is inherent to its CMOS input stage architecture and must be accounted for in circuit design to avoid clipping or increased distortion.
Can the OPA2375IPWR drive capacitive loads without oscillation?
Yes, the OPA2375IPWR features a resistive open-loop output impedance that enables stable operation into ≥100 pF capacitive loads without external isolation resistors or compensation networks. Typical overshoot remains <10% at 100 pF with unity-gain configuration, as verified in Figure 7-25 of the SBOS886E datasheet - simplifying layout for ADC driver and filter applications.
What is the typical input bias current of the OPA2375IPWR, and why does it matter?
The typical input bias current of the OPA2375IPWR is ±3 pA at 25°C. This ultra-low value minimizes voltage error across high-impedance source elements such as photodiodes, pH electrodes, or thermocouples - preventing signal attenuation and ensuring accurate transimpedance gain. At 100 MΩ source impedance, this contributes only ~0.3 mV of error, far below its ±0.5 mV offset spec.
Is the OPA2375IPWR pin-compatible with other members of the OPAx375 family?
The OPA2375IPWR (TSSOP-8) shares identical pinout with OPA2375 variants in SOIC-8 (D), VSSOP-8 (DGK), and WSON-8 (DSG) packages - all follow the standard dual-op-amp pin assignment: OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, V+. However, it is not pin-compatible with the 10-pin X2QFN (RUG) variant, which adds SHDN1/SHDN2 pins and reorders several terminals.
OPA2375IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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-TSSOP
OPA2375IPWR FAQ
1.How can I place an order for OPA2375IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2375IPWR 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 OPA2375IPWR reliable?
The price and inventory of OPA2375IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2375IPWR is usually 5 days.
3.What payment methods are accepted for OPA2375IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2375IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2375IPWR?
OPA2375IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2375IPWR 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 OPA2375IPWR?
For technical support, including OPA2375IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2375IPWR requirements.
6.How does Aetrix verify that OPA2375IPWR is sourced from the original manufacturer or authorized distributors?
All OPA2375IPWR 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 OPA2375IPWR meets industry standards.
7.What is the process for return or replacement of OPA2375IPWR?
All OPA2375IPWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2375IPWR, 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 OPA2375IPWR part is unused and in its original packaging.
Return procedure for OPA2375IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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