My Inquiry
My Account
Texas Instruments OPA313DBVT
- Part No.:
- OPA313DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA313DBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,211
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA313DBVT 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 input offset voltage, and operates from 1.8 V to 5.5 V - enabling high-accuracy sensor front-ends in portable medical devices.
For engineers reviewing the OPA313DBVT datasheet, OPA313DBVT pinout, OPA313DBVT application, or OPA313DBVT equivalent, this page provides verified specifications, package-validated pin functions, real-world use cases in loop-powered sensors and ADC drivers, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The OPA313DBVT uses 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. Its class AB output stage drives ≥10-kΩ loads while maintaining rail-to-rail swing, and internal RF/EMI filtering (–3 dB at ~35 MHz) suppresses rectification-induced offset shifts from high-frequency interference.
It achieves unity-gain stability with capacitive loads up to 150 pF and exhibits no phase reversal under overdrive. Input bias current remains ultra-low (0.2 pA typ) across –40°C to +125°C, supporting high-impedance transducer interfaces without significant error drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1 MHz at 5.5 V - supports stable closed-loop gain ≥10 up to 100 kHz for anti-aliasing filter stages. |
| Quiescent Current | 50 µA/ch - enables multi-year operation on coin-cell batteries in wireless sensor nodes. |
| Input Voltage Noise | 25 nV/√Hz at 1 kHz - preserves SNR in low-level thermistor or strain gauge amplification. |
| Input Offset Voltage | 0.5 mV (typ) - introduces ≤0.5% full-scale error in 1-V reference-based 12-bit ADC driver applications. |
| Supply Voltage Range | 1.8 V to 5.5 V - interoperable with Li-ion, alkaline, and regulated 3.3-V/5-V rails without level-shifting. |
| Rail-to-Rail I/O | Input extends (V−) − 0.2 V to (V+) + 0.2 V; output swings within 75 mV of rails at 2-kΩ load - maximizes dynamic range in single-supply data acquisition. |
| Operating Temperature | –40°C to +125°C - qualified for industrial motor control feedback and automotive cabin sensor modules. |
Pinout & Package
SOT23-5 (DBV) package: 5-pin surface-mount, 2.9 mm × 1.6 mm footprint, exposed thermal pad connected to V− for enhanced thermal performance (θJA = 228.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Drives ADC input or next-stage filter; rail-to-rail swing supports full-scale sampling. |
| 2 (IN−) | Inverting input | Accepts feedback network or differential signal; high impedance (0.2 pA IB) minimizes loading on high-Z sources. |
| 3 (IN+) | Non-inverting input | Connects to sensor bridge or reference divider; rail-to-rail CMVR allows direct connection to ground-referenced sources. |
| 4 (V−) | Negative supply | Ground in single-supply configs; thermal pad must be soldered to PCB ground plane for thermal reliability. |
| 5 (V+) | Positive supply | Accepts 1.8–5.5 V; bypass with 0.01-µF ceramic capacitor near pin to suppress supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Internal RF/EMI filter | 35-MHz low-pass filter on inputs reduces EMI-induced offset shift in noisy industrial environments. |
| No phase reversal | Prevents catastrophic output latch-up during input overdrive - critical for protection-circuit monitoring. |
| Extended temperature range | Specified from –40°C to +125°C ensures parametric stability in unheated outdoor sensor enclosures. |
| Low input bias current | 0.2 pA typ enables accurate amplification of signals from >10-MΩ source impedances (e.g., pH electrodes). |
| Unity-gain stable | Operates reliably in buffer configuration without external compensation - simplifies layout for space-constrained wearables. |
Applications
| Battery-Powered Medical Sensors | Loop-Powered Industrial Transmitters |
|---|---|
Use Scenario: Amplifying low-amplitude bio-potential signals (ECG, EMG) from dry electrodes in portable diagnostic patches. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail input enabling zero-bias electrode interfaces. Use Value: 50 µA quiescent current extends battery life to >2 years; 25 nV/√Hz noise preserves microvolt-level signal integrity. | Use Scenario: Conditioning 4–20 mA loop transmitter outputs in hazardous-area process controllers with intrinsic safety compliance. IC Role / Device Role / Timing Role: Low-power, high-accuracy current-to-voltage converter and signal conditioner operating from loop-derived 3.3-V rail. Use Value: 0.5 mV offset and 2 µV/°C drift minimize temperature-induced calibration drift across ambient ranges. |
| Wireless Sensor Node ADC Driver | Portable Media Player Audio Preamp |
Use Scenario: Driving SAR ADC inputs in sub-GHz IoT nodes where power budget is constrained to <100 µA average. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance sensor output from ADC sample-and-hold capacitance. Use Value: Rail-to-rail output swing ensures full utilization of 12-bit ADC reference; 1-MHz GBW settles within 6 µs to 0.01%. | Use Scenario: Low-noise microphone preamplifier stage in Bluetooth earbuds powered by 3.7-V Li-ion cells. IC Role / Device Role / Timing Role: Single-supply, AC-coupled gain stage with high PSRR rejecting switching regulator ripple. Use Value: 90-dB PSRR at DC and 74-dB over temperature suppresses audible noise from PMIC switching artifacts. |
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 internal EMI filter, 2.7–6.0 V supply range | Lacks rail-to-rail input; not suitable for ground-referenced sensor interfaces below 0.3 V | Select when cost sensitivity outweighs EMI immunity and ultra-low IQ requirements. |
| LMV321IDBVR | Higher IQ (80 µA), lower noise (39 nV/√Hz), no guaranteed rail-to-rail input, –40°C to +125°C rating | CMVR limited to (V−) + 0.3 V to (V+) − 1.2 V - excludes true single-supply 0–V input applications | Choose only if system supply ≥2.7 V and input common-mode stays >0.3 V above ground. |
Compared with MCP6001T-I/OT and LMV321IDBVR, the OPA313DBVT uniquely combines rail-to-rail input, 50-µA IQ, integrated EMI filtering, and validated 1.8-V operation - making it the sole option among the three for precision, ultra-low-power, single-supply sensor signal chains down to 1.8 V.
Availability
OPA313DBVT is available at Aetrix Electronics and suitable for battery-powered instruments, sensor signal conditioning, and wireless sensor nodes requiring stable component supply across extended temperature and low-voltage operation.
Supply support for OPA313DBVT 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 OPA313DBVT belongs to TI's Precision Value Line series, engineered specifically for cost-sensitive, battery-operated applications demanding high accuracy, rail-to-rail performance, and robustness in harsh thermal and EMI environments.
FAQ
What is the maximum capacitive load the OPA313DBVT can drive while remaining stable?
The OPA313DBVT is unity-gain stable with capacitive loads up to 150 pF, as confirmed in the TI SBOS649C datasheet. This allows direct connection to ADC input capacitors or long PCB traces without external compensation. For loads exceeding 150 pF, a series resistor (e.g., 10–50 Ω) between the OPA313DBVT output and the load restores stability while preserving signal integrity in most sensor interface applications.
Does the OPA313DBVT support true rail-to-rail input at 1.8-V supply?
Yes, the OPA313DBVT supports rail-to-rail input at 1.8 V: its common-mode input range extends from (V−) − 0.2 V to (V+) + 0.2 V, covering –0.2 V to +2.0 V. This is explicitly verified in the Electrical Characteristics tables for +1.8 V operation and enables direct interfacing with ground-referenced sensors and resistive dividers without level-shifting circuitry in the OPA313DBVT design.
What is the thermal pad connection requirement for the OPA313DBVT in SOT23-5 (DBV) package?
The OPA313DBVT in DBV package features an exposed thermal pad on the underside that must be connected to the V− (ground) net via solder and thermal vias. Per TI's package documentation, this connection lowers junction-to-board thermal resistance to 54.6°C/W and prevents thermal shutdown during sustained output current. Leaving the pad floating degrades θJA by >40°C/W and risks parametric drift in continuous operation.
How does the internal EMI filter in the OPA313DBVT improve system-level immunity?
The OPA313DBVT integrates a 35-MHz low-pass filter on both inputs to attenuate high-frequency EMI before rectification occurs in internal junctions. Measured EMIRR IN+ exceeds 100 dB at 100 MHz, reducing offset voltage shifts caused by GSM, Wi-Fi, or switching regulator noise - a key advantage over standard op amps like LMV321IDBVR in electrically noisy industrial or portable designs using the OPA313DBVT.
Can the OPA313DBVT operate reliably with a 1.8-V single supply and drive a 10-kΩ load to rail?
Yes, the OPA313DBVT is fully specified at 1.8 V and delivers rail-to-rail output swing into 10-kΩ loads: output voltage swing is within 15 mV of each rail (V+ and V−) under these conditions. This capability is confirmed in the +1.8 V Electrical Characteristics table and enables full utilization of 1.8-V ADC references without headroom loss - a core design feature of the OPA313DBVT family.
OPA313DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
OPA313DBVT FAQ
1.How can I place an order for OPA313DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA313DBVT 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 OPA313DBVT reliable?
The price and inventory of OPA313DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA313DBVT is usually 5 days.
3.What payment methods are accepted for OPA313DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA313DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA313DBVT?
OPA313DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA313DBVT 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 OPA313DBVT?
For technical support, including OPA313DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA313DBVT requirements.
6.How does Aetrix verify that OPA313DBVT is sourced from the original manufacturer or authorized distributors?
All OPA313DBVT 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 OPA313DBVT meets industry standards.
7.What is the process for return or replacement of OPA313DBVT?
All OPA313DBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA313DBVT, 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 OPA313DBVT part is unused and in its original packaging.
Return procedure for OPA313DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA313DBVT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
