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Texas Instruments OPA376AIDBVTG4
- Part No.:
- OPA376AIDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA376AIDBVTG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,509
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Product details
Overview
OPA376AIDBVTG4 from Texas Instruments is a precision rail-to-rail input/output operational amplifier with e-trim™ technology, designed for low-noise, low-power signal conditioning in battery-powered systems. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 5 μV typical offset voltage, 760 μA quiescent current, and 5.5 MHz gain bandwidth - enabling high-fidelity ADC buffering and sensor front-end amplification in portable medical and test equipment.
For engineers reviewing the OPA376AIDBVTG4 datasheet, OPA376AIDBVTG4 pinout, OPA376AIDBVTG4 application, or OPA376AIDBVTG4 equivalent, key selection criteria include its 2.2 V to 5.5 V single-supply operation, 0.8 μVPP 0.1–10 Hz noise, ±25 μV max offset over temperature, rail-to-rail output swing within 20 mV of rails (at 10 kΩ), and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA376AIDBVTG4 employs TI's proprietary e-trim™ process to achieve factory-trimmed dc precision without external calibration. Its CMOS input stage provides 0.2 pA typical input bias current and 13 pF common-mode input capacitance, supporting high-impedance sensor interfaces while maintaining stability with capacitive loads up to 250 pF in unity-gain configuration.
It features a fully differential input stage with 90 dB minimum CMRR over –40°C to +125°C, 120 dB open-loop gain at 10 kΩ load, and 2 V/μs slew rate - enabling accurate settling (<2 μs to 0.01%) for fast-sampling 16-bit+ SAR ADCs. PSRR exceeds 100 dB across 10 Hz–100 kHz, ensuring robust performance in noisy supply environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop gain ≥10 at 500 kHz for anti-aliasing filter design |
| Input Offset Voltage (max) | 25 μV - enables <0.001% error in 2.5 V full-scale 16-bit measurement systems |
| Quiescent Current | 760 μA (typ) - allows continuous operation >1 year on a 200 mAh coin cell in handheld instrumentation |
| Voltage Noise Density | 7.5 nV/√Hz at 1 kHz - preserves SNR in audio and biopotential signal chains below 20 kHz |
| 0.1–10 Hz Noise | 0.8 μVPP - critical for DC-coupled sensor amplifiers (e.g., thermopile, strain gauge) requiring sub-μV drift stability |
| Supply Voltage Range | 2.2 V to 5.5 V - directly powers from single Li-ion, 3×AA, or regulated 3.3 V rails without LDO overhead |
| Output Swing (10 kΩ) | Within 20 mV of rails - maximizes dynamic range when driving ADC inputs referenced to VDD/2 |
Pinout & Package
OPA376AIDBVTG4 is packaged in a 5-pin SC70 (DCK) footprint measuring 2.00 mm × 1.25 mm, optimized for ultra-compact PCB layouts in portable devices. Thermal resistance RθJA is 267.0°C/W, requiring minimal copper pour for thermal management in ambient temperatures up to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Non-inverting input | High-impedance node (13 pF CM capacitance) accepting signals from 100 mV below V– to 100 mV above V+; compatible with high-Z sensors |
| –IN (Pin 3) | Inverting input | Differential input terminal; matched to +IN for <1 μVPP CMRR-induced error in precision gain stages |
| OUT (Pin 4) | Amplifier output | Capable of sourcing/sinking ±30 mA; drives 250 pF capacitive loads directly in unity-gain buffer mode |
| V+ (Pin 5) | Positive supply | Accepts 2.2–5.5 V; internal ESD diodes clamp transients to rails - requires series resistor if input exceeds V+ +0.5 V |
| V– (Pin 2) | Negative supply / ground | Supports single-supply operation down to 0 V; input common-mode extends 100 mV below this rail |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | Factory-trimmed offset (5 μV typ) and drift (0.26 μV/°C) eliminate need for external nulling circuits in production |
| Rail-to-rail I/O | Input range extends 100 mV beyond supplies; output swings to within 20 mV of rails at 10 kΩ - maximizes usable signal headroom |
| Low-noise architecture | 7.5 nV/√Hz at 1 kHz + 0.8 μVPP 0.1–10 Hz noise enables sub-16-bit ENOB preservation in DC-coupled sensor paths |
| Capacitive load drive | Stable with ≥250 pF pure capacitance in unity-gain configuration - eliminates need for isolation resistors in ADC driver applications |
| Wide supply range | Operates from 2.2 V to 5.5 V - supports direct connection to unregulated battery sources (e.g., 2×AA, LiFePO₄) without LDO loss |
Applications
| ADC Buffer | Medical Instrumentation |
|---|---|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., ADS8327) in a portable ECG monitor. IC Role / Device Role / Timing Role: Precision voltage follower providing low-impedance, low-noise signal source with fast settling (<2 μs to 0.01%) before ADC sampling. Use Value: Preserves 16-bit ENOB by limiting 0.1–10 Hz noise to 0.8 μVPP and minimizing charge kickback via rail-to-rail output swing. |
Use Scenario: Amplifying microvolt-level biopotential signals (e.g., EEG, EMG) in a wearable diagnostic patch. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with high CMRR (>90 dB) and ultra-low input bias current (0.2 pA). Use Value: Enables high-impedance electrode interfaces without signal degradation; 760 μA IQ extends battery life beyond 72 hours. |
| Handheld Test Equipment | Active Filtering |
Use Scenario: Signal conditioning front-end in a battery-powered multimeter measuring DC voltage with 0.001% accuracy. IC Role / Device Role / Timing Role: Precision gain stage with 25 μV max offset and 0.26 μV/°C drift, referenced to a 4.096 V bandgap. Use Value: Eliminates calibration drift over temperature; 5.5 MHz GBW supports fast auto-ranging without phase lag. |
Use Scenario: Second-order Butterworth low-pass filter (50 kHz cutoff) preceding an audio ADC in a portable spectrum analyzer. IC Role / Device Role / Timing Role: Active filter op-amp with 7.5 nV/√Hz noise and 2 V/μs slew rate to maintain THD+N <0.00027% at 1 kHz. Use Value: Achieves flat passband response and sharp roll-off (–40 dB/decade) without external compensation components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81T-E/OT | Higher 12.5 nV/√Hz noise; 1.6 μVPP 0.1–10 Hz; 650 μA IQ; same SC70-5 package | Less suitable for sub-μV DC measurements but lower cost for general-purpose precision buffering | Select when 0.8 μVPP low-frequency noise is non-critical and budget constraints dominate |
| AD8628ARTZ-REEL7 | Zero-drift architecture; 0.5 μVPP 0.1–10 Hz; 1.2 MHz GBW; 1.2 mA IQ; SOT-23-5 package | Better long-term drift stability but insufficient bandwidth for >100 kHz ADC drivers | Select for ultra-stable DC gain stages where bandwidth <1 MHz is acceptable |
Compared with MCP6V81T-E/OT and AD8628ARTZ-REEL7, OPA376AIDBVTG4 uniquely balances 5.5 MHz bandwidth, 7.5 nV/√Hz noise, and 760 μA quiescent current in SC70-5 - making it optimal for portable 16-bit+ data acquisition where speed, noise, and power must coexist.
Availability
OPA376AIDBVTG4 is available at Aetrix Electronics and suitable for portable medical instrumentation, handheld test equipment, and battery-powered sensor signal conditioning requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for OPA376AIDBVTG4 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 low-power signal chain solutions.
The OPA376AIDBVTG4 belongs to TI's e-trim™ precision op-amp product line, engineered specifically for high-resolution data acquisition in space- and power-constrained applications such as portable diagnostics and IoT edge sensors.
FAQ
What is the maximum capacitive load the OPA376AIDBVTG4 can drive stably in unity-gain configuration?
The OPA376AIDBVTG4 can directly drive up to 250 pF of pure capacitive load in unity-gain buffer configuration without external compensation. This capability is validated in TI's SBOS406G datasheet Figure 16 and enables direct connection to ADC input capacitors or long PCB traces without added series resistance - preserving dc accuracy while avoiding gain error from output voltage dividers.
Does the OPA376AIDBVTG4 support true rail-to-rail input common-mode range?
Yes, the OPA376AIDBVTG4 supports rail-to-rail input with a common-mode voltage range extending 100 mV beyond both supply rails (V– – 0.1 V to V+ + 0.1 V). However, input offset voltage remains lowest (≤25 μV) only within V– to V+ – 1.3 V; operation near the positive rail may increase offset slightly per Figure 23 in the datasheet.
What is the typical quiescent current of the OPA376AIDBVTG4 at 3.3 V supply?
The OPA376AIDBVTG4 draws 760 μA typical quiescent current at 25°C and 5.5 V supply, and this value remains stable across 2.2 V to 5.5 V - including at 3.3 V. At –40°C to +125°C, quiescent current stays ≤1 mA, making it suitable for always-on sensor nodes powered by energy-harvesting sources or small batteries.
How does the e-trim™ technology in the OPA376AIDBVTG4 improve system-level accuracy?
e-trim™ technology performs final-stage laser trimming of internal offset voltage and drift during wafer probe or final test, reducing initial offset to 5 μV typical and drift to 0.26 μV/°C. This eliminates field calibration and reduces first-pass failure rates in high-accuracy systems like portable multimeters and clinical analyzers using the OPA376AIDBVTG4.
Is the OPA376AIDBVTG4 pin-compatible with other members of the OPA376 family?
Yes, the OPA376AIDBVTG4 (SC70-5) shares identical pinout with other OPA376 variants in SC70-5 (DCK) and SOT-23-5 (DBV) packages - including +IN (Pin 1), –IN (Pin 3), OUT (Pin 4), V+ (Pin 5), and V– (Pin 2). This allows drop-in replacement across voltage grade or tape-and-reel options without layout changes.
OPA376AIDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 760µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA376AIDBVTG4 FAQ
1.How can I place an order for OPA376AIDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA376AIDBVTG4 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 OPA376AIDBVTG4 reliable?
The price and inventory of OPA376AIDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA376AIDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA376AIDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA376AIDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA376AIDBVTG4?
OPA376AIDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA376AIDBVTG4 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 OPA376AIDBVTG4?
For technical support, including OPA376AIDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA376AIDBVTG4 requirements.
6.How does Aetrix verify that OPA376AIDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA376AIDBVTG4 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 OPA376AIDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA376AIDBVTG4?
All OPA376AIDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA376AIDBVTG4, 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 OPA376AIDBVTG4 part is unused and in its original packaging.
Return procedure for OPA376AIDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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