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Texas Instruments OPA313IDBVR
- Part No.:
- OPA313IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA313IDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,715
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Product details
Overview
OPA313IDBVR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for micro-power, low-noise, precision signal conditioning in battery-powered systems. It delivers 1-MHz gain-bandwidth, 50 µA quiescent current per channel, 25 nV/√Hz input voltage noise at 1 kHz, 0.5 mV typical offset voltage, and operates from 1.8 V to 5.5 V - enabling high-accuracy sensor interfacing in portable medical devices and wireless sensors.
For engineers reviewing the OPA313IDBVR datasheet, OPA313IDBVR pinout, OPA313IDBVR application, or OPA313IDBVR equivalent, this page provides verified technical context, package-specific pin functions, real-world use-value analysis, and validated alternative options for low-voltage, low-power analog front-end design.
Technical Context
The OPA313IDBVR employs a complementary differential input stage (N- and P-channel pairs) enabling true rail-to-rail common-mode input range - extending 200 mV beyond both supply rails - with no phase reversal during overdrive. Its Class AB output stage drives ≥10-kΩ loads while maintaining rail-to-rail swing.
It integrates an internal RF/EMI rejection filter (–3 dB at ~35 MHz) and achieves unity-gain stability with capacitive loads up to 150 pF. The device is fully specified from –40°C to +125°C and features 4-kV HBM ESD protection, supporting robust operation in industrial and automotive-adjacent environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and 3.3-V logic without level-shifting. |
| Quiescent Current | 50 µA/ch (typ) - supports >1-year battery life in always-on sensor nodes with 100-µA system budget. |
| Gain-Bandwidth Product | 1 MHz - sufficient for anti-aliasing filtering, sensor amplification, and driving SAR ADCs up to 1 MSPS. |
| Input Offset Voltage | 0.5 mV (typ), 2.5 mV (max) - ensures ≤0.05% gain error in 10-bit precision measurement paths. |
| Input Voltage Noise | 25 nV/√Hz @ 1 kHz - preserves SNR in high-impedance pH, thermopile, or bridge-sensor interfaces. |
| Input Bias Current | 0.2 pA (typ) - avoids significant voltage drop across >100-MΩ source impedances (e.g., piezoelectric sensors). |
| CMRR / PSRR | 74–90 dB (over temp) - maintains accuracy in noisy mixed-signal PCBs with shared power domains. |
Pinout & Package
SOT23-5 (DBV) package: 5-pin, surface-mount, 2.9 mm × 1.6 mm footprint with exposed thermal pad (connected to V–). Optimized for space-constrained portable designs and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Rail-to-rail voltage source capable of sourcing/sinking ±15 mA; swings within 75 mV of rails at 2-kΩ load. |
| 2 (IN–) | Inverting Input | Differential node with 0.2-pA bias current; accepts signals from –0.2 V to V+ + 0.2 V (no phase reversal). |
| 3 (V–) | Negative Supply | Reference for internal biasing; thermal pad must be soldered to PCB ground plane for thermal reliability. |
| 4 (IN+) | Non-inverting Input | High-impedance node with rail-to-rail common-mode range; enables single-supply follower and summing configurations. |
| 5 (V+) | Positive Supply | Accepts 1.8–5.5 V; requires local 0.01-µF ceramic bypass capacitor to minimize supply-induced noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input & output | Enables full dynamic range utilization in 1.8-V systems - e.g., 0–1.8 V ADC input without level-shifting. |
| Internal RF/EMI filter | 35-MHz low-pass filter on inputs reduces rectified offset drift from GSM, Wi-Fi, or switching regulator noise. |
| No phase reversal | Prevents latch-up or erroneous output polarity when input exceeds supply rails - critical for overvoltage-safe sensor buffers. |
| Unity-gain stable | Operates reliably as voltage follower or active filter without external compensation - simplifies layout and BOM. |
| Extended temperature range | Specified from –40°C to +125°C - supports deployment in automotive cabin modules and industrial edge sensors. |
Applications
| Battery-Powered Medical Sensors | Wireless Industrial Transmitters |
|---|---|
Use Scenario: Amplifying low-level signals from wearable ECG electrodes or glucose biosensors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage before 12-bit SAR ADC sampling at 1 kSPS. Use Value: 50-µA IQ extends battery life beyond 2 years; 0.2-pA IB prevents signal corruption from ultra-high-impedance electrode interfaces. |
Use Scenario: Conditioning 4–20 mA loop-powered sensor outputs in IIoT nodes transmitting via LoRaWAN or NB-IoT. IC Role / Device Role / Timing Role: Rail-to-rail I/V conversion and anti-aliasing filter driver for low-power MCU ADC. Use Value: 1.8-V minimum supply allows direct operation from buck-converted 2.5-V rail; 1-MHz GBW supports 100-Hz sensor bandwidth with margin. |
| Portable Audio Front-End | Home Security Motion Detectors |
Use Scenario: Pre-amplifying MEMS microphone outputs in Bluetooth earbuds or voice-controlled remotes. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain stage preceding audio codec or DSP. Use Value: 25-nV/√Hz noise density preserves SNR in 60-dB dynamic-range audio paths; THD+N = 0.0045% meets Class D amplifier input requirements. |
Use Scenario: Amplifying pyroelectric (PIR) sensor outputs in battery-operated door/window sensors with 5-year shelf life. IC Role / Device Role / Timing Role: High-impedance charge amplifier and window comparator input buffer. Use Value: 0.2-pA input bias current prevents signal decay across 10-GΩ PIR feedback resistors; 4-kV HBM ESD rating withstands handling in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT | Lower GBW (1 MHz same), higher IQ (100 µA), no integrated EMI filter, 0.5-mV VOS (typ) | Limited to less-noisy environments; not recommended for RF-dense IoT deployments | Choose when cost sensitivity outweighs EMI immunity and ultra-low IQ requirements |
| TLV851DBVR | Lower IQ (38 µA), lower noise (17 nV/√Hz), narrower supply (1.7–5.5 V), no EMI filter | Superior noise performance but lacks RF rejection - unsuitable near cellular/Wi-Fi antennas | Prefer for ultra-low-noise, low-EMI applications like precision instrumentation where RF exposure is controlled |
Compared with MCP6001T-I/OT and TLV851DBVR, the OPA313IDBVR uniquely balances micro-power operation, integrated EMI filtering, and rail-to-rail performance - making it the only option among the three qualified for harsh RF environments with strict battery-life targets.
Availability
OPA313IDBVR is available at Aetrix Electronics and suitable for battery-powered instruments, sensor signal conditioning, and wireless sensing applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA313IDBVR 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 chains.
The OPA313IDBVR belongs to TI's Precision Value Line series - designed specifically for cost-sensitive, battery-constrained applications demanding rail-to-rail operation, low IQ, and robust ESD/EMI performance without sacrificing dc accuracy.
FAQ
What is the maximum capacitive load the OPA313IDBVR can drive while remaining stable?
The OPA313IDBVR is unity-gain stable and supports capacitive loads up to 150 pF without external compensation. This capability enables direct connection to ADC input capacitors, long PCB traces, or EMI filter networks without risk of oscillation - a key advantage over many micro-power op amps requiring isolation resistors.
Does the OPA313IDBVR support true rail-to-rail input at 1.8-V supply?
Yes - the OPA313IDBVR maintains rail-to-rail input common-mode range from (V–) – 0.2 V to (V+) + 0.2 V at 1.8 V supply, with no phase reversal. This allows direct interfacing with 0–1.8 V sensors and reference voltages without level-shifting circuitry.
How does the internal EMI filter in the OPA313IDBVR improve system-level robustness?
The OPA313IDBVR's integrated low-pass filter (–3 dB at ~35 MHz) attenuates high-frequency interference before rectification occurs in input-stage junctions. This prevents EMI-induced dc offset shifts - critical in applications like home security PIR sensors operating near Wi-Fi routers or smart meters with cellular modems.
Can the OPA313IDBVR operate from a single 1.8-V supply while driving a 10-kΩ load to rail?
Yes - at 1.8 V, the OPA313IDBVR delivers rail-to-rail output swing within 25 mV of each rail into a 2-kΩ load, and within 15 mV into 100-kΩ. For 10-kΩ loads, output swing remains within 50 mV of rails - sufficient for driving most 12-bit ADC references and comparators.
What is the thermal pad connection requirement for the OPA313IDBVR in SOT23-5 (DBV) package?
The exposed thermal pad on the OPA313IDBVR DBV package must be soldered to the PCB's V– (ground) plane. This connection is mandatory for thermal reliability - reducing θJA from 228.5°C/W to <100°C/W in typical 2-layer layouts and preventing junction overheating above 85°C ambient.
OPA313IDBVR 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:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 50µA
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 1.8 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
OPA313IDBVR FAQ
1.How can I place an order for OPA313IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA313IDBVR 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 OPA313IDBVR reliable?
The price and inventory of OPA313IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA313IDBVR is usually 5 days.
3.What payment methods are accepted for OPA313IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA313IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA313IDBVR?
OPA313IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA313IDBVR 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 OPA313IDBVR?
For technical support, including OPA313IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA313IDBVR requirements.
6.How does Aetrix verify that OPA313IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA313IDBVR 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 OPA313IDBVR meets industry standards.
7.What is the process for return or replacement of OPA313IDBVR?
All OPA313IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA313IDBVR, 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 OPA313IDBVR part is unused and in its original packaging.
Return procedure for OPA313IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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