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Texas Instruments OPA377AIDBVT
- Part No.:
- OPA377AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA377AIDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,675
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Product details
Overview
OPA377AIDBVT from Texas Instruments is a single-channel, rail-to-rail output CMOS operational amplifier optimized for low-voltage, single-supply applications. It delivers 5.5MHz gain-bandwidth, 7.5nV/√Hz input voltage noise at 1kHz, 0.2pA typical input bias current, and operates from 2.2V to 5.5V supply. It is widely used in photodiode preamplifiers, piezoelectric sensor signal conditioning, and precision active filters.
For engineers reviewing the OPA377AIDBVT datasheet, OPA377AIDBVT pinout, OPA377AIDBVT application, or OPA377AIDBVT equivalent, this page provides verified specifications, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The OPA377AIDBVT employs a unity-gain-stable CMOS input stage with EMI filtering (–3dB at ~75MHz), enabling robust operation in noisy environments. Its input common-mode range extends 100mV beyond both rails, and it features internal electrostatic discharge protection on all pins with ±10mA absolute maximum input current rating.
It exhibits low offset drift (0.32mV/°C max), high open-loop gain (112dB min), and excellent PSRR (28mV/V typ) across its 2.2V–5.5V supply range. The device maintains stable performance over –40°C to +125°C and supports capacitive loads up to 250pF in unity-gain configuration without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5MHz - enables stable closed-loop operation up to 5.5MHz at unity gain for high-speed signal conditioning. |
| Input Voltage Noise Density | 7.5nV/√Hz at 1kHz - critical for low-noise amplification of weak signals such as photodiode or piezoelectric outputs. |
| Input Bias Current | ±0.2pA (typ) - ensures minimal error in high-impedance sensor interfaces like photodiode transimpedance amplifiers. |
| Supply Voltage Range | 2.2V to 5.5V - supports direct battery-powered operation without regulation, ideal for portable instrumentation. |
| Quiescent Current | 0.76mA per channel - balances low power consumption with high ac performance for always-on sensing nodes. |
| Rail-to-Rail Output | Swings within 10mV of rails (RL = 10kΩ) - maximizes dynamic range in single-supply systems with limited headroom. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
SOT-23-5 (DBV) package: 5-pin surface-mount, 2.9mm × 1.6mm footprint, thermal pad connected to V–, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | High-impedance CMOS node; accepts differential input signals; clamped to rails via internal diodes. |
| 2 (IN+) | Non-inverting input | High-impedance CMOS node; referenced for common-mode input range extending 100mV beyond supply rails. |
| 3 (V–) | Negative supply / ground reference | Connects to system ground or negative rail; thermal die bond tied to this pin for heat dissipation. |
| 4 (OUT) | Amplifier output | Capable of driving ≥10kΩ load rail-to-rail; supports ≤250pF capacitive load in unity-gain buffer mode. |
| 5 (V+) | Positive supply | Accepts 2.2V–5.5V single supply; bypass capacitor (0.1µF) required between this pin and V– for stability. |
Key Features
| Feature | Design Value |
|---|---|
| EMI Input Filtering | Integrated low-pass filter (–3dB at ~75MHz) suppresses RF rectification effects in industrial EMI environments. |
| Low Input Bias Current | 0.2pA typ eliminates significant offset errors in >1GΩ feedback networks used in photodiode preamps. |
| Rail-to-Rail Output Swing | 10mV from rails (10kΩ load) preserves full signal swing in 3.3V or lower single-supply data acquisition systems. |
| Unity-Gain Stability | No external compensation required - simplifies design of buffers, followers, and gain-of-one active filters. |
| Wide Supply Range | 2.2V–5.5V operation enables direct use with Li-ion, Li-Po, or two-cell alkaline batteries without LDO regulation. |
Applications
| Photodiode Preamplifier | Piezoelectric Sensor Preamplifier |
|---|---|
|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon or InGaAs photodiodes in optical smoke detectors or spectrophotometers. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and low voltage noise to preserve SNR in high-gain configurations. Use Value: Enables >120dB dynamic range with <1mV offset drift over temperature, critical for low-light detection accuracy. |
Use Scenario: Conditioning high-impedance charge output from accelerometers or ultrasonic transducers in structural health monitoring. IC Role / Device Role / Timing Role: Charge-to-voltage converter with rail-to-rail output and wide bandwidth to preserve transient fidelity of mechanical shock events. Use Value: Delivers 5.5MHz bandwidth and 7.5nV/√Hz noise floor to resolve sub-millivolt piezo signals without external filtering. |
| Sensor Signal Conditioning | Audio Equipment |
|
Use Scenario: Front-end amplification for resistive bridge sensors (e.g., load cells, RTDs) in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with low offset (1mV max) and high CMRR (90dB) to reject common-mode noise in factory-floor wiring. Use Value: Maintains 16-bit effective resolution over –40°C to +85°C due to low dVOS/dT (0.32mV/°C) and stable quiescent current. |
Use Scenario: Line-level buffering and tone control in portable headphone amplifiers and USB DACs operating from 3.3V supplies. IC Role / Device Role / Timing Role: Low-distortion (0.00027% THD+N), low-noise buffer with rail-to-rail output to drive 10kΩ audio codecs or op-amp stages. Use Value: Achieves >110dB SNR in 20Hz–20kHz band while consuming only 0.76mA, extending battery life in wearable audio devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVT | Zero-drift architecture; 0.02µV/°C offset drift vs. 0.32mV/°C; 350kHz GBW vs. 5.5MHz; higher IQ (17µA vs. 760µA) | Better dc precision for µV-level sensor offsets; insufficient bandwidth for >100kHz active filters or fast-settling ADC drivers | Select OPA333AIDBVT when long-term dc stability dominates over speed; choose OPA377AIDBVT for bandwidth-critical signal chains. |
| MCP6001UT-E/OT | Lower cost CMOS op amp; 1MHz GBW; 17nV/√Hz noise; 1pA IB; no EMI filtering; 1.8V–6.0V supply | Adequate for general-purpose buffering but lacks low-noise performance and EMI immunity needed in medical or test equipment | Use MCP6001UT-E/OT for cost-sensitive consumer electronics; retain OPA377AIDBVT where 7.5nV/√Hz noise and 75MHz EMI rejection are mandatory. |
Compared with OPA333AIDBVT and MCP6001UT-E/OT, the OPA377AIDBVT uniquely balances 5.5MHz bandwidth, 7.5nV/√Hz noise, 0.2pA input bias, and integrated EMI filtering-making it optimal for high-fidelity, battery-powered sensor front-ends where speed, noise, and robustness coexist.
Availability
OPA377AIDBVT is available at Aetrix Electronics and suitable for photodiode preamplifiers, piezoelectric sensor interfaces, and active filter designs requiring stable component supply across industrial temperature ranges.
Supply support for OPA377AIDBVT 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 OPA377 family was designed specifically for low-noise, low-power, single-supply signal conditioning in portable instrumentation, industrial sensors, and audio systems-emphasizing rail-to-rail output, EMI resilience, and wide temperature operation.
FAQ
What is the maximum capacitive load the OPA377AIDBVT can drive in unity-gain configuration?
The OPA377AIDBVT can directly drive up to 250pF of pure capacitive load in unity-gain buffer configuration while maintaining stability. For larger loads or mixed R-C loads, a small series resistor (10Ω–20Ω) between the output and capacitive node is recommended to preserve phase margin without degrading dc accuracy significantly. This capability is validated in TI's SBOS504B datasheet Figure 15.
Does the OPA377AIDBVT require external ESD protection when used in handheld medical devices?
No-OPA377AIDBVT integrates internal ESD protection on all pins rated to 4000V HBM, 1000V CDM, and 200V MM per JEDEC standards. Its input clamping diodes limit current to ±10mA, eliminating need for external TVS or series resistors in most handheld medical applications, provided input signals remain within absolute maximum ratings.
Can the OPA377AIDBVT operate from a 1.8V supply?
No-the OPA377AIDBVT has a minimum specified supply voltage of 2.2V. Operation below 2.2V is not characterized or guaranteed; parameters including input common-mode range, output swing, and gain-bandwidth degrade outside the 2.2V–5.5V range. For 1.8V systems, consider TI's TLV9001 or MCP6001 as alternatives.
What is the thermal resistance (θJA) of the OPA377AIDBVT in its SOT-23-5 package?
The OPA377AIDBVT in the SOT-23-5 (DBV) package has a junction-to-ambient thermal resistance (θJA) of 200°C/W, as specified in the Electrical Characteristics table of SBOS504B. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with PCB copper area and thermal vias connected to the V– pad.
Is the OPA377AIDBVT pin-compatible with other members of the OPA377 family?
Yes-the OPA377AIDBVT shares identical pinout with all single-channel OPA377 variants in SOT-23-5 (e.g., OPA377AIDBVR, OPA377AIDCKT) and SC70-5 packages. However, it is not pin-compatible with dual (OPA2377) or quad (OPA4377) versions, which use different pin counts and arrangements.
OPA377AIDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 250 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
OPA377AIDBVT FAQ
1.How can I place an order for OPA377AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA377AIDBVT 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 OPA377AIDBVT reliable?
The price and inventory of OPA377AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA377AIDBVT is usually 5 days.
3.What payment methods are accepted for OPA377AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA377AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA377AIDBVT?
OPA377AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA377AIDBVT 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 OPA377AIDBVT?
For technical support, including OPA377AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA377AIDBVT requirements.
6.How does Aetrix verify that OPA377AIDBVT is sourced from the original manufacturer or authorized distributors?
All OPA377AIDBVT 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 OPA377AIDBVT meets industry standards.
7.What is the process for return or replacement of OPA377AIDBVT?
All OPA377AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA377AIDBVT, 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 OPA377AIDBVT part is unused and in its original packaging.
Return procedure for OPA377AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA377AIDBVT Tags
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