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Texas Instruments OPA375IDCKR
- Part No.:
- OPA375IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA375IDCKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,086
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Product details
Overview
OPA375IDCKR from Texas Instruments is a single-channel, rail-to-rail output CMOS operational amplifier optimized for precision low-noise signal conditioning in space-constrained applications. It delivers 3.5 nV/√Hz input voltage noise, 10-MHz gain bandwidth, and ≤500 µV maximum input offset voltage at 2.25 V to 5.5 V supply, enabling high-fidelity photodiode amplification and sensor front-end buffering.
For engineers reviewing the OPA375IDCKR datasheet, OPA375IDCKR pinout, OPA375IDCKR application, or OPA375IDCKR equivalent, key selection criteria include its ultra-low broadband noise performance, unity-gain stability with capacitive loads up to 100 pF, ±0.16 µV/°C offset drift, and SC70-5 package compatibility with high-density PCB layouts.
Technical Context
The OPA375IDCKR employs a CMOS input stage with 10 pA typical input bias current, supporting high-impedance sensor interfaces such as photodiodes and piezoelectric elements. Its resistive open-loop output impedance enables stable operation into ≥100 pF capacitive loads without external compensation.
Integrated RFI/EMI rejection filtering and 2-kV HBM ESD protection enhance robustness in noisy industrial or portable environments. The device operates across –40°C to +125°C and maintains rail-to-rail output swing within 8 mV of each rail at 10-kΩ load under 5.5-V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise density | 3.5 nV/√Hz at 10 kHz - enables high-SNR amplification of weak signals without adding significant broadband noise floor |
| Gain bandwidth | 10 MHz - supports stable unity-gain operation and preserves signal integrity up to audio and ultrasonic frequencies |
| Input offset voltage | ≤500 µV (max) - ensures minimal DC error in precision DC-coupled sensor interfaces and ADC driver stages |
| Quiescent current | 890 µA per channel - balances low power consumption with high-speed, low-noise performance for battery-powered systems |
| Supply range | 2.25 V to 5.5 V - allows direct interfacing with 3.3-V and 5-V logic domains and extends battery life in single-supply portable designs |
| Offset drift | ±0.16 µV/°C - minimizes temperature-induced DC drift in precision instrumentation operating over wide ambient ranges |
| Output swing | Within 8 mV of rails (RL = 10 kΩ, VS = 5.5 V) - maximizes dynamic range in low-voltage, single-supply configurations |
Pinout & Package
The OPA375IDCKR is housed in a 5-pin SC70 package measuring 1.25 mm × 2.00 mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+IN) | Noninverting input | High-impedance CMOS node accepting sensor or reference signals; supports >10 GΩ source impedances |
| 2 (V–) | Negative supply / ground | Reference return path for single- or dual-supply operation; must be connected to lowest system potential |
| 3 (–IN) | Inverting input | Feedback node for closed-loop configurations; matched to +IN for optimal common-mode rejection |
| 4 (OUT) | Amplifier output | Rail-to-rail capable output driving ADC inputs, filters, or downstream analog stages with minimal headroom loss |
| 5 (V+) | Positive supply | Primary power rail; accepts 2.25–5.5 V; decoupling capacitor required within 1 cm for stability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers full-scale swing within 8 mV of supply rails at 10-kΩ load, maximizing usable dynamic range in low-voltage systems |
| Unity-gain stable | Operates unconditionally stable at gain = +1 without external compensation, simplifying design of buffer and gain stages |
| RFI/EMI rejection filter | Integrated input-stage filtering suppresses 1-GHz interference by 51 dB, improving reliability in electrically noisy environments |
| No phase reversal | Maintains correct polarity during input overdrive conditions, preventing latch-up or erroneous control signals in feedback loops |
| 2-kV HBM ESD rating | Withstands electrostatic discharge events common in handling and assembly, reducing field failure risk without external protection |
Applications
| Photodiode Amplification | Precision Sensor Front-End |
|---|---|
Use Scenario: Converting low-current photocurrents (pA–nA) from silicon photodiodes into measurable voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with ultra-low input bias current (10 pA typ.) and 3.5 nV/√Hz noise to preserve signal-to-noise ratio. Use Value: Enables detection of sub-nA photocurrents in optical smoke detectors and spectrophotometers without degrading resolution. |
Use Scenario: Conditioning millivolt-level outputs from strain gauges, thermopiles, and RTDs before ADC sampling. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ≤500 µV offset and ±0.16 µV/°C drift to minimize calibration burden. Use Value: Reduces system-level offset drift errors in industrial process sensors operating from –40°C to +125°C. |
| ADC Input-Driver Amplifier | Wearable Consumer Electronics |
Use Scenario: Driving SAR and delta-sigma ADC inputs with fast settling (<1.2 µs to 0.01%) and low THD+N (0.00035%). IC Role / Device Role / Timing Role: High-fidelity buffer isolating ADC sample-and-hold from source impedance variations and noise coupling. Use Value: Prevents missing codes and harmonic distortion in 16-bit+ data acquisition systems used in test equipment. |
Use Scenario: Signal conditioning in compact, battery-powered devices such as heart-rate monitors and activity trackers. IC Role / Device Role / Timing Role: Low-power (890 µA), small-footprint (SC70-5) amplifier enabling continuous analog sensing with extended runtime. Use Value: Supports 7+ day battery life in wearable patches while maintaining clinical-grade signal fidelity for bio-potential sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDCKR | Zero-drift architecture (0.02 µV/°C drift), lower offset (10 µV max), but higher noise (5.5 nV/√Hz) and narrower GBW (350 kHz) | Better for ultra-stable DC applications (e.g., weigh scales); unsuitable for >100-kHz signal paths due to limited bandwidth | Select OPA333AIDCKR when long-term DC accuracy outweighs AC performance; choose OPA375IDCKR for broadband sensor signals requiring <1-µs settling. |
| LMV721IDCKR | Lower cost CMOS op amp with 10-MHz GBW but higher noise (13 nV/√Hz), no RFI filtering, and 1.5-mV max offset | Suitable for non-critical consumer audio or general-purpose buffering where noise and EMI immunity are secondary | Choose LMV721IDCKR only for cost-sensitive, noise-tolerant designs; OPA375IDCKR is preferred for medical, test, or precision analog front-ends. |
Compared with OPA333AIDCKR and LMV721IDCKR, the OPA375IDCKR uniquely balances low broadband noise, wide bandwidth, and integrated EMI rejection-making it the optimal choice for high-fidelity, wideband sensor signal chains where both AC fidelity and DC stability matter.
Availability
OPA375IDCKR 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.
Supply support for OPA375IDCKR 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 amp design and manufacturing.
The OPA375IDCKR belongs to TI's OPAx375 family of low-noise, rail-to-rail CMOS op amps engineered for high-accuracy signal conditioning in space-constrained, low-voltage systems-from portable medical devices to industrial IoT sensors.
FAQ
What is the maximum input offset voltage specification for OPA375IDCKR?
The OPA375IDCKR has a maximum input offset voltage of 500 µV across the full operating temperature range of –40°C to +125°C. This value is production-tested and guaranteed, ensuring predictable DC error in precision applications like sensor front-ends and ADC drivers where calibration headroom is limited.
Does OPA375IDCKR support single-supply operation?
Yes, the OPA375IDCKR supports true single-supply operation from 2.25 V to 5.5 V. Its rail-to-rail output swings within 8 mV of both supply rails at 10-kΩ load, and its input common-mode range extends to within 1.2 V of the negative rail (V–), enabling use with ground-referenced sensors and 3.3-V microcontrollers without level-shifting circuitry.
What package type is used for OPA375IDCKR?
The OPA375IDCKR is supplied exclusively in the 5-pin SC70 package (body size 1.25 mm × 2.00 mm). This ultra-small outline package is compatible with standard SMT assembly processes and supports high-density routing in portable and wearable electronics where board space is at a premium.
Is OPA375IDCKR unity-gain stable?
Yes, the OPA375IDCKR is fully unity-gain stable and requires no external compensation. Its internal compensation ensures stable operation at closed-loop gains of +1 or greater, making it ideal for buffer, voltage-follower, and transimpedance amplifier configurations without added complexity or component count.
How does the noise performance of OPA375IDCKR compare to other precision op amps?
The OPA375IDCKR delivers 3.5 nV/√Hz input voltage noise at 10 kHz-significantly lower than general-purpose op amps like LMV721IDCKR (13 nV/√Hz) and competitive with higher-cost alternatives. This low noise, combined with 10-MHz bandwidth, makes OPA375IDCKR especially effective for amplifying weak, broadband signals from photodiodes and piezoelectric sensors without degrading SNR.
OPA375IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.75V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 890µA
- Current - Output / Channel:
- 68 mA
- Voltage - Supply Span (Min):
- 2.25 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
OPA375IDCKR FAQ
1.How can I place an order for OPA375IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA375IDCKR 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 OPA375IDCKR reliable?
The price and inventory of OPA375IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA375IDCKR is usually 5 days.
3.What payment methods are accepted for OPA375IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA375IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA375IDCKR?
OPA375IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA375IDCKR 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 OPA375IDCKR?
For technical support, including OPA375IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA375IDCKR requirements.
6.How does Aetrix verify that OPA375IDCKR is sourced from the original manufacturer or authorized distributors?
All OPA375IDCKR 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 OPA375IDCKR meets industry standards.
7.What is the process for return or replacement of OPA375IDCKR?
All OPA375IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA375IDCKR, 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 OPA375IDCKR part is unused and in its original packaging.
Return procedure for OPA375IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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