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Texas Instruments OPA376AIDBVRG4
- Part No.:
- OPA376AIDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA376AIDBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
OPA376AIDBVRG4 from Texas Instruments is a precision rail-to-rail input/output operational amplifier optimized for low-noise, low-quiescent-current portable and battery-powered systems. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 5 μV typical offset voltage, 5.5 MHz gain-bandwidth product, and operates from 2.2 V to 5.5 V supply - enabling high-accuracy signal conditioning in ADC front-ends and medical sensor interfaces.
For engineers reviewing the OPA376AIDBVRG4 datasheet, OPA376AIDBVRG4 pinout, OPA376AIDBVRG4 application, or OPA376AIDBVRG4 equivalent, key selection criteria include its e-trim™-enabled dc precision (25 μV max offset), 760 μA typical quiescent current, 0.8 μVPP 0.1–10 Hz noise, rail-to-rail swing within 20 mV of rails (at 10 kΩ), and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA376AIDBVRG4 employs TI's proprietary e-trim™ process for factory trimming of input offset voltage and drift, achieving 5 μV typical and 0.26 μV/°C max drift over –40°C to +85°C. Its CMOS input stage provides 0.2 pA typical input bias current and 13 pF common-mode input capacitance, supporting high-impedance sensor interfacing without significant loading.
Internally compensated for unity-gain stability, it drives up to 250 pF capacitive loads directly and features 90 dB min CMRR and 120 dB open-loop gain. PSRR exceeds 76 dB across 2.2–5.5 V supply range, ensuring robust performance in unregulated battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop operation up to 100 kHz with ≥10× phase margin in G = 1 configuration |
| Input Offset Voltage | 5 μV typical / 25 μV max - enables sub-16-bit error floor in 24-bit ADC driver applications without external calibration |
| Input Voltage Noise | 7.5 nV/√Hz at 1 kHz - preserves SNR in audio preamps and precision instrumentation amplifiers |
| Quiescent Current | 760 μA typical - allows continuous operation >1 year on a single CR2032 coin cell in handheld test equipment |
| Supply Voltage Range | 2.2 V to 5.5 V - powers directly from Li-ion (3.0–4.2 V), two AA cells (2.4–3.2 V), or regulated 3.3 V/5 V rails |
| Output Swing | Within 20 mV of rails (RL = 10 kΩ) - maximizes dynamic range in single-supply 16-bit+ data acquisition systems |
| 0.1–10 Hz Noise | 0.8 μVPP - critical for low-frequency sensor signal conditioning (e.g., thermopile, strain gauge) |
Pinout & Package
OPA376AIDBVRG4 is packaged in a 5-pin SC70 (DCK) footprint measuring 2.00 mm × 1.25 mm, optimized for ultra-compact PCB layouts in portable electronics and wearable medical devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Non-inverting input | High-impedance CMOS node; accepts signals from 100 mV below V– to 100 mV above V+, enabling true rail-to-rail common-mode range |
| –IN (Pin 3) | Inverting input | Differential pair input; matched to +IN for <25 μV offset; requires symmetric layout to minimize thermal EMF errors |
| OUT (Pin 4) | Amplifier output | Capable of sourcing/sinking ±30 mA; drives 10 kΩ load to within 20 mV of rails; stable with ≤250 pF capacitive load |
| V+ (Pin 5) | Positive supply | Accepts 2.2–5.5 V; internal ESD diodes clamp to this rail - series input resistors required if VIN exceeds V+ + 0.5 V |
| V– (Pin 2) | Negative supply | Ground reference for single-supply use; clamped to V– – 0.5 V - input overvoltage protection active when driven below this threshold |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | Factory-trimmed offset (5 μV typ) and drift (0.26 μV/°C) eliminate need for system-level calibration in production |
| Rail-to-rail I/O | Input common-mode extends 100 mV beyond supplies; output swings to within 20 mV of rails - maximizes usable signal range in 3.3 V systems |
| Low 0.1–10 Hz noise | 0.8 μVPP enables accurate DC-coupled measurement of slow-varying biosignals (ECG, EEG) without high-pass filtering artifacts |
| Unity-gain stable | No external compensation required; drives 250 pF directly - simplifies anti-aliasing filter design for SAR ADCs like ADS8327 |
| High PSRR | ≥76 dB over full supply range - rejects ripple from switching regulators or battery voltage sag in portable power architectures |
| ESD-protected inputs | ±4000 V HBM rating - withstands handling in standard assembly environments without additional external protection |
Applications
| ADC Buffer | Medical Instrumentation |
|---|---|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., ADS8327) in a portable blood glucose meter. IC Role / Device Role / Timing Role: Precision buffer isolating high-impedance sensor output from ADC sampling capacitor kickback. Use Value: 7.5 nV/√Hz noise and 5 μV offset preserve ENOB >15.2 bits; rail-to-rail output ensures full-scale utilization of 0–VREF ADC range. |
Use Scenario: Amplifying low-amplitude biopotential signals (e.g., ECG leads) in a wearable cardiac monitor. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with DC-coupled input and 0.8 μVPP 0.1–10 Hz noise floor. Use Value: Sub-microvolt low-frequency noise enables detection of P-wave morphology; 760 μA IQ extends battery life to >7 days on a 120 mAh LiPo cell. |
| Handheld Test Equipment | Active Filtering |
Use Scenario: Input stage of a handheld digital multimeter measuring µV-level thermocouple outputs. IC Role / Device Role / Timing Role: Low-drift, low-noise transducer amplifier with cold-junction compensation interface. Use Value: 0.26 μV/°C drift minimizes temperature-induced zero-error; 25 μV max offset eliminates manual null adjustment during field calibration. |
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 integrator with unity-gain stability and 5.5 MHz GBW enabling flat group delay up to 20 kHz. Use Value: 7.5 nV/√Hz noise prevents degradation of 110 dB SNR; rail-to-rail output avoids clipping on 3.3 V supply with 2 VPP input signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower IQ (17 μA) but reduced GBW (350 kHz); no e-trim - 12 μV max offset | Better for ultra-low-power (<10 μA avg) battery harvesting; unsuitable for >100 kHz signal paths | Select OPA333AIDBVR only when quiescent current dominates over bandwidth/noise requirements |
| ADA4522-1ARMZ | Zero-drift architecture; 0.3 μV max offset, 5.8 nV/√Hz noise, but higher IQ (1.2 mA) and 3 MHz GBW | Superior for <1 ppm precision metrology; less optimal for portable devices due to 1.2× higher power | Choose ADA4522-1ARMZ when sub-μV offset stability over time/temperature outweighs battery life constraints |
Compared with OPA376AIDBVRG4, OPA333AIDBVR trades bandwidth and noise for extreme low-power operation, while ADA4522-1ARMZ delivers superior long-term offset stability at higher power cost - making OPA376AIDBVRG4 the balanced choice for portable precision analog where 5.5 MHz GBW, 7.5 nV/√Hz noise, and 760 μA IQ are jointly required.
Availability
OPA376AIDBVRG4 is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and battery-powered data acquisition systems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for OPA376AIDBVRG4 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 OPA376AIDBVRG4 belongs to TI's e-trim™ precision op-amp family, designed specifically for battery-operated instrumentation demanding low noise, low drift, and rail-to-rail performance without sacrificing bandwidth or power efficiency.
FAQ
What is the maximum capacitive load the OPA376AIDBVRG4 can drive without external compensation?
The OPA376AIDBVRG4 is unity-gain stable and can directly drive up to 250 pF of pure capacitive load while maintaining ≥45° phase margin. For loads exceeding 250 pF, a small series resistor (10–20 Ω) between OUT and the load restores stability without degrading dc accuracy - verified per Figure 16 and Section 7.3.3 of the SBOS406G datasheet.
Does the OPA376AIDBVRG4 support true rail-to-rail input common-mode voltage range?
Yes - the OPA376AIDBVRG4 accepts input voltages from (V–) – 0.1 V to (V+) + 0.1 V, extending 100 mV beyond both supply rails. However, input offset voltage remains minimized only within (V–) to (V+) – 1.3 V; operation beyond that range increases offset nonlinearly, as confirmed in Figure 23 and Electrical Characteristics Table.
What is the typical quiescent current of the OPA376AIDBVRG4 at 3.3 V supply?
The OPA376AIDBVRG4 draws 760 μA typical quiescent current at TA = 25°C and VS = 5.5 V. At 3.3 V, IQ remains within 760–950 μA (max), as specified in Section 6.7 - variation is minimal across 2.2–5.5 V due to its CMOS design, enabling predictable battery-life estimation in 3.3 V portable systems.
How does the e-trim™ technology in the OPA376AIDBVRG4 improve long-term stability?
e-trim™ performs final-stage laser trimming of internal offset correction circuitry during wafer probe or final test, compensating for molding-induced parameter shifts. This yields 5 μV typical offset with 0.26 μV/°C drift over –40°C to +85°C - significantly better than non-trimmed CMOS op-amps - and ensures consistent performance across temperature and lifetime without recalibration.
Is the OPA376AIDBVRG4 pin-compatible with other packages in the OPA376 family?
No - the OPA376AIDBVRG4 uses the SC70-5 (DCK) package with pin 1 = +IN, pin 2 = V–, pin 3 = –IN, pin 4 = OUT, pin 5 = V+. This differs from the SOT-23-5 (DBV) variant (pin 1 = OUT, pin 2 = V–, pin 3 = +IN, pin 4 = –IN, pin 5 = V+) and SOIC-8 (D) version. Always verify pin mapping using the "Pin Configuration and Functions" section of SBOS406G before layout.
OPA376AIDBVRG4 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
OPA376AIDBVRG4 FAQ
1.How can I place an order for OPA376AIDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA376AIDBVRG4 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 OPA376AIDBVRG4 reliable?
The price and inventory of OPA376AIDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA376AIDBVRG4 is usually 5 days.
3.What payment methods are accepted for OPA376AIDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA376AIDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA376AIDBVRG4?
OPA376AIDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA376AIDBVRG4 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 OPA376AIDBVRG4?
For technical support, including OPA376AIDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA376AIDBVRG4 requirements.
6.How does Aetrix verify that OPA376AIDBVRG4 is sourced from the original manufacturer or authorized distributors?
All OPA376AIDBVRG4 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 OPA376AIDBVRG4 meets industry standards.
7.What is the process for return or replacement of OPA376AIDBVRG4?
All OPA376AIDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA376AIDBVRG4, 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 OPA376AIDBVRG4 part is unused and in its original packaging.
Return procedure for OPA376AIDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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