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Texas Instruments OPA2314AIDRBT
- Part No.:
- OPA2314AIDRBT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
OPA2314AIDRBT.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,483
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Product details
Overview
OPA2314AIDRBT from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, low-power applications. It delivers 3 MHz gain-bandwidth, 1.5 V/µs slew rate, 14 nV/√Hz input voltage noise at 1 kHz, 150 µA per channel quiescent current, and 0.5 mV typical input offset voltage - enabling precision signal conditioning in battery-powered instrumentation and sensor interfaces.
For engineers reviewing the OPA2314AIDRBT datasheet, OPA2314AIDRBT pinout, OPA2314AIDRBT application, or OPA2314AIDRBT equivalent, key selection considerations include its 1.8–5.5 V supply range, –40°C to 125°C extended temperature rating, integrated RF/EMI filter, unity-gain stability with up to 300 pF capacitive load, and absence of phase reversal during overdrive.
Technical Context
The OPA2314AIDRBT employs a complementary differential input stage (N- and P-channel pairs) enabling rail-to-rail common-mode input range extending 200 mV beyond both supply rails. Its Class AB output stage drives loads down to 10 kΩ while maintaining rail-to-rail swing.
It features an internal RF/EMI rejection filter that improves immunity to high-frequency interference, and robust electrostatic discharge protection (±4 kV HBM). The device achieves unity-gain stability without external compensation, even with 300 pF capacitive loads on the output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 3 MHz - supports stable closed-loop operation up to ~300 kHz at G = 10, suitable for anti-aliasing and active filtering. |
| Slew Rate | 1.5 V/µs - enables accurate reproduction of signals up to ~240 kHz at 1 VPP without slew-induced distortion. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - critical for low-level sensor amplification (e.g., photodiode, strain gauge) where noise dominates SNR. |
| Quiescent Current per Channel | 150 µA at 5 V - allows dual-amplifier operation from coin-cell or energy-harvesting sources with multi-year battery life. |
| Input Offset Voltage | 0.5 mV (typical) - ensures ≤0.01% gain error in 5 V full-scale precision gain stages without trimming. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interface with Li-ion, Li-po, and 3.3 V/1.8 V logic domains without level-shifting. |
| Operating Temperature | –40°C to 125°C - qualified for industrial control, automotive cabin, and medical portable equipment environments. |
Pinout & Package
OPA2314AIDRBT is packaged in an 8-pin DFN (DRB) package measuring 3.00 mm × 3.00 mm with an exposed thermal pad on the underside, which must be connected to V– for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input of Amplifier A | Accepts input signals up to 200 mV beyond V+ or V–; enables single-supply sensor biasing and reference tracking. |
| +IN B (Pin 5) | Noninverting input of Amplifier B | Independent high-impedance node (0.2 pA bias current) for dual-path signal conditioning or differential front-end use. |
| –IN A (Pin 2) | Inverting input of Amplifier A | Used in transimpedance or inverting gain configurations; matched to +IN A for common-mode rejection. |
| –IN B (Pin 6) | Inverting input of Amplifier B | Enables independent feedback networks per channel; supports dual active filters or parallel signal paths. |
| OUT A (Pin 1) | Output of Amplifier A | Rail-to-rail swing (≤20 mV from rails at 10 kΩ load) drives ADC inputs, DAC buffers, or low-side current sense nodes. |
| OUT B (Pin 7) | Output of Amplifier B | Electrically isolated output path; supports simultaneous analog functions (e.g., signal amplification + reference buffering). |
| V+ (Pin 8) | Positive supply terminal | Accepts 1.8–5.5 V; requires local 0.01 µF ceramic bypass capacitor to ground for high-frequency PSRR integrity. |
| V– (Pin 4) | Negative supply terminal | Typically ground in single-supply systems; thermal pad must be soldered to this net for junction-to-board RθJB = 20.1 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Extends dynamic range to >99% of supply rails - essential for maximizing resolution in 12–16-bit ADC driver applications. |
| Integrated RF/EMI filter | Rejects cellular, Wi-Fi, and Bluetooth band interference at the input stage - eliminates need for external ferrite beads or RC filters. |
| No phase reversal under overdrive | Prevents latch-up or system fault propagation when inputs exceed common-mode range - improves reliability in sensor fault conditions. |
| Unity-gain stable with 300 pF load | Enables direct driving of long traces, cables, or ADC input capacitance without external isolation resistors or compensation networks. |
| Low input bias current (0.2 pA typ.) | Minimizes voltage error across MΩ-range source impedances - critical for photodiode, pH electrode, and piezoelectric sensor interfaces. |
Applications
| Battery-Powered Instrumentation | Photodiode Amplification |
|---|---|
Use Scenario: Portable multimeters, handheld gas analyzers, and clinical point-of-care devices requiring microamp-level power budgets and high DC accuracy. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amplifier for sensor front-end gain/offset correction, the other for reference buffer or supply monitoring. Use Value: 150 µA/ch quiescent current extends battery life; 0.5 mV offset and 14 nV/√Hz noise preserve measurement fidelity at sub-mV levels. |
Use Scenario: Optical smoke detectors, pulse oximeters, and spectrophotometers using reverse-biased photodiodes generating pA–nA currents. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with ultra-low input bias current and low input capacitance (1 pF diff, 5 pF cm) to maximize bandwidth and minimize noise gain. Use Value: 0.2 pA input bias current prevents diode leakage errors; rail-to-rail output swings fully into ADC input range without level-shifting. |
| Active Filtering | Remote Sensing |
Use Scenario: Anti-aliasing, tone generation, and sensor signal shaping in IoT edge nodes and wireless sensor networks. IC Role / Device Role / Timing Role: Dual second-order Sallen-Key or multiple-feedback filter stages - one per channel - operating from 1.8 V supply. Use Value: 3 MHz GBW supports filter cutoffs up to ~300 kHz; unity-gain stability avoids peaking with standard 1% resistor/capacitor tolerances. |
Use Scenario: Industrial 4–20 mA loop receivers, RTD/thermocouple transmitters, and distributed sensor nodes with long interconnects. IC Role / Device Role / Timing Role: Precision difference amplifier or programmable gain stage compensating for lead resistance and ambient temperature drift. Use Value: 125°C max operating temperature ensures reliability in hot enclosures; 78 dB PSRR rejects supply ripple from noisy DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-I/SN | Higher quiescent current (1 mA/ch), lower GBW (10 MHz), no integrated EMI filter, 0.25 mV offset (typ) | Better AC performance but unsuitable for <100 µA battery-critical designs; lacks EMI hardening for noisy industrial environments | Select when higher speed and drive strength outweigh power and EMI requirements. |
| TLV9062IDR | Lower quiescent current (530 µA/ch), higher GBW (10 MHz), rail-to-rail I/O, no EMI filter, 0.3 mV offset (typ) | Superior speed and lower offset, but unqualified for >105°C and lacks EMI rejection - less robust in RF-dense or high-temp settings | Prefer for cost-sensitive, non-extended-temp consumer applications needing faster settling. |
Compared with MCP6022-I/SN and TLV9062IDR, the OPA2314AIDRBT uniquely balances ultra-low power (150 µA), extended temperature support (–40°C to 125°C), and built-in RF/EMI filtering - making it the only option among the three qualified for harsh, battery-constrained, and EMI-prone industrial sensing roles.
Availability
OPA2314AIDRBT is available at Aetrix Electronics and suitable for battery-powered instrumentation, photodiode amplification, and active filtering requiring stable component supply, traceable sourcing, and long-term lifecycle continuity.
Supply support for OPA2314AIDRBT 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 amplifiers and low-power signal chain solutions.
The OPA2314AIDRBT belongs to TI's OPAx314 family - designed specifically for portable, battery-operated systems demanding rail-to-rail operation, low IQ, low noise, and robust EMI immunity without sacrificing DC precision.
FAQ
What is the maximum capacitive load the OPA2314AIDRBT can drive while remaining unity-gain stable?
The OPA2314AIDRBT is unity-gain stable with capacitive loads up to 300 pF, as confirmed in the datasheet's "Stability" section and Figure 20 (Small-Signal Overshoot vs Load Capacitance). This allows direct connection to ADC input capacitance, long PCB traces, or cable-driven outputs without external isolation resistors - a key advantage over many general-purpose op-amps requiring compensation.
Does the OPA2314AIDRBT have built-in EMI protection, and how is it implemented?
Yes, the OPA2314AIDRBT includes an internal RF/EMI rejection filter on both inputs, explicitly documented in the Features list and Figure 32 (EMIRR IN+ vs Frequency). This filter provides >60 dB rejection at 900 MHz and >40 dB at 2.4 GHz, eliminating the need for external RC filters or ferrite beads in wireless-adjacent designs such as smart meters or portable medical devices.
Can the OPA2314AIDRBT operate from a single 1.8 V supply, and what performance is guaranteed at that voltage?
Yes, the OPA2314AIDRBT is fully specified from 1.8 V to 5.5 V. At 1.8 V, it maintains 2.7 MHz GBW (vs 3 MHz at 5 V), 14 nV/√Hz input voltage noise, 0.5 mV typical offset, and rail-to-rail I/O swing - all verified across –40°C to 125°C. Quiescent current drops to 130 µA/ch, optimizing energy efficiency for coin-cell or energy-harvesting systems.
What is the thermal performance of the OPA2314AIDRBT in its DFN-8 (DRB) package?
In the DRB (DFN-8) package, the OPA2314AIDRBT achieves a junction-to-board thermal resistance (RθJB) of 20.1 °C/W when the exposed thermal pad is soldered to a V– plane. This enables reliable operation at full rated load up to 125°C ambient - critical for densely packed industrial modules where airflow is limited and board-level heat spreading is essential.
Is the OPA2314AIDRBT suitable for photodiode transimpedance applications, and why?
Yes - the OPA2314AIDRBT is well-suited for photodiode TIA applications due to its 0.2 pA typical input bias current (minimizing dark-current error), 1 pF differential input capacitance (reducing noise gain), rail-to-rail output (maximizing dynamic range into ADCs), and integrated EMI filter (suppressing ambient RF interference that corrupts low-level optical signals).
OPA2314AIDRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 150µA (x2 Channels)
- Current - Output / Channel:
- 20 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:
- 8-SON (3x3)
OPA2314AIDRBT FAQ
1.How can I place an order for OPA2314AIDRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2314AIDRBT 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 OPA2314AIDRBT reliable?
The price and inventory of OPA2314AIDRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2314AIDRBT is usually 5 days.
3.What payment methods are accepted for OPA2314AIDRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2314AIDRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2314AIDRBT?
OPA2314AIDRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2314AIDRBT 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 OPA2314AIDRBT?
For technical support, including OPA2314AIDRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2314AIDRBT requirements.
6.How does Aetrix verify that OPA2314AIDRBT is sourced from the original manufacturer or authorized distributors?
All OPA2314AIDRBT 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 OPA2314AIDRBT meets industry standards.
7.What is the process for return or replacement of OPA2314AIDRBT?
All OPA2314AIDRBT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2314AIDRBT, 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 OPA2314AIDRBT part is unused and in its original packaging.
Return procedure for OPA2314AIDRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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