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Texas Instruments OPA2314AIDGK
- Part No.:
- OPA2314AIDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2314AIDGK.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,566
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Product details
Overview
OPA2314AIDGK 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 OPA2314AIDGK datasheet, OPA2314AIDGK pinout, OPA2314AIDGK application, or OPA2314AIDGK 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 under overdrive.
Technical Context
The OPA2314AIDGK employs a complementary differential input stage enabling rail-to-rail common-mode input range (extending 200 mV beyond both rails), paired with a Class AB output stage capable of driving ≥10 kΩ loads across the full supply range. Its internal architecture integrates an RF/EMI rejection filter on the noninverting input to suppress high-frequency interference without external components.
Designed for single-supply operation down to 1.8 V (±0.9 V), it maintains DC precision via ultra-low input bias current (0.2 pA typ), low offset drift (1 µV/°C), and high open-loop gain (100–128 dB). The device achieves unity-gain stability while supporting capacitive loads up to 300 pF - eliminating need for isolation resistors in ADC driver configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 3 MHz - supports stable closed-loop operation up to ~2.7 MHz with 10 pF load at 5 V supply. |
| Slew Rate | 1.5 V/μs - enables accurate reproduction of ≤150 kHz full-scale sine waves at 2-Vpp output swing. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz - critical for low-level sensor signal amplification without degrading SNR. |
| Quiescent Current | 150 µA per channel - allows dual op-amp operation from coin-cell or energy-harvesting sources. |
| Input Offset Voltage | 0.5 mV (typ) - ensures ≤0.01% gain error in 5-V full-scale precision measurement paths. |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with Li-ion, Li-po, and regulated 3.3 V/5 V system rails. |
| Operating Temperature | –40°C to 125°C - qualified for industrial, automotive under-hood, and medical portable environments. |
Pinout & Package
OPA2314AIDGK is housed in an 8-pin MSOP (DGK) package measuring 3.0 mm × 3.0 mm with 0.65 mm pitch. The exposed thermal pad on the underside must be connected to V– for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | Accepts signals from 0.2 V below V– to 0.2 V above V+; enables true single-supply sensor interfacing. |
| –IN A (Pin 2) | Inverting input, Channel A | High-impedance node (0.2 pA bias current); requires matched trace routing to minimize offset drift. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail swing (≤20 mV from rails at 10 kΩ load); drives SAR ADC inputs directly without level-shifting. |
| V– (Pin 4) | Negative supply / ground reference | Common return for both channels; thermal pad must be soldered to this net for RθJB = 20.1 °C/W. |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent input path; supports dual-sensor monitoring or active filter topologies. |
| –IN B (Pin 6) | Inverting input, Channel B | Electrically isolated from Channel A; enables independent feedback networks per channel. |
| OUT B (Pin 7) | Output, Channel B | Simultaneous dual-output capability; supports differential drive or redundant signal paths. |
| V+ (Pin 8) | Positive supply | Bypass with 0.01 µF ceramic capacitor close to pin; supports wide dynamic headroom in low-voltage systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8–5.5 V supply range - maximizes dynamic range in low-voltage data acquisition. |
| Integrated RF/EMI filter | Rejects cellular, Wi-Fi, and Bluetooth interference at IN+ without external RC network - reduces layout sensitivity. |
| No phase reversal on overdrive | Prevents latch-up or erroneous control signals when input exceeds common-mode range - improves system robustness. |
| Unity-gain stable with 300 pF load | Eliminates need for series output resistor when driving ADC input capacitance - simplifies PCB layout and saves BOM cost. |
| 4-kV HBM ESD protection | Withstands handling and board-level ESD events without external protection - reduces qualification risk in production. |
| Low input bias current (0.2 pA) | Supports high-impedance photodiode and pH electrode interfaces without significant leakage-induced offset error. |
Applications
| Battery-Powered Instrumentation | Photodiode Amplification |
|---|---|
Use Scenario: Portable multimeters and handheld gas analyzers requiring microamp-level current measurement with >16-bit ENOB. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end converting photocurrent to voltage with minimal added noise and offset. Use Value: 14 nV/√Hz noise and 0.2 pA bias current preserve signal integrity from high-impedance sensors; 150 µA/channel enables >500-hour battery life. |
Use Scenario: UV/IR flame detectors and spectrophotometers using reverse-biased photodiodes in low-light conditions. IC Role / Device Role / Timing Role: Low-noise, high-gain TIA with rail-to-rail output driving 12–16-bit SAR ADCs. Use Value: Rail-to-rail output swing ensures full ADC code utilization; integrated EMI filter rejects ambient RF without compromising bandwidth. |
| Active Filter Networks | Remote Sensor Signal Conditioning |
Use Scenario: Anti-aliasing and reconstruction filters in portable audio recorders and IoT edge nodes. IC Role / Device Role / Timing Role: Dual-channel second-order Sallen-Key or MFB topology implementing programmable cutoff frequencies. Use Value: 3 MHz GBW supports filter corner frequencies up to 300 kHz; dual configuration minimizes component count and board area. |
Use Scenario: Wireless temperature/humidity nodes transmitting analog sensor outputs over LoRaWAN or NB-IoT. IC Role / Device Role / Timing Role: Precision buffer and level shifter translating sensor output to ADC input range under varying supply conditions. Use Value: 1.8 V minimum supply allows direct connection to buck-boost regulators; –40°C to 125°C rating ensures field reliability. |
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 |
|---|---|---|---|
| OPA2313AIDGKR | Lower GBW (1 MHz), higher IQ (50 µA/ch), same 1.8–5.5 V supply and –40°C to 125°C rating. | Better suited for ultra-low-power DC sensing where bandwidth <100 kHz suffices. | Select when power budget is tighter than speed requirement; not suitable for >100 kHz active filters. |
| MCP6022-E/SN | Higher IQ (1 mA/ch), lower noise (25 nV/√Hz), wider supply (2.7–5.5 V), no integrated EMI filter. | Preferred for higher-speed, higher-precision industrial control loops with stable 3.3/5 V rails. | Choose when 3 MHz GBW and 14 nV/√Hz noise are unnecessary; avoid in battery-constrained or noisy RF environments. |
Compared with OPA2314AIDGK, OPA2313AIDGKR trades bandwidth for lower quiescent current, while MCP6022-E/SN offers higher drive strength at significantly higher power - making OPA2314AIDGK the optimal balance of speed, noise, and efficiency for portable precision analog front-ends.
Availability
OPA2314AIDGK is available at Aetrix Electronics and suitable for battery-powered instrumentation, photodiode amplifiers, and active filter designs requiring stable component supply, long-term manufacturability, and guaranteed extended temperature performance.
Supply support for OPA2314AIDGK 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx314 family was engineered specifically for low-voltage, low-power precision signal conditioning - targeting portable medical devices, handheld test equipment, and energy-constrained IoT sensor nodes.
FAQ
What is the maximum capacitive load the OPA2314AIDGK can drive while maintaining stability?
The OPA2314AIDGK is unity-gain stable with capacitive loads up to 300 pF, as verified in TI's SBOS563G datasheet Figure 20. This eliminates the need for isolation resistors when driving typical SAR ADC input capacitances (10–20 pF) or PCB traces with moderate parasitic capacitance. For loads exceeding 300 pF, external compensation or a series resistor is required to prevent peaking or oscillation in the OPA2314AIDGK closed-loop response.
Does the OPA2314AIDGK support true rail-to-rail input operation below 1.8 V supply?
No. The OPA2314AIDGK is specified and characterized for operation only within 1.8 V to 5.5 V supply range, per Section 6.3 of the SBOS563G datasheet. Below 1.8 V, parameters including input offset voltage, gain bandwidth, and output swing are not guaranteed - and functionality may degrade unpredictably. For sub-1.8 V operation, consider TI's OPA333 or OPA376 families, which are explicitly rated down to 1.4 V or 1.7 V respectively.
How does the integrated RF/EMI filter in the OPA2314AIDGK affect small-signal bandwidth?
The integrated RF/EMI filter on the noninverting input of the OPA2314AIDGK attenuates high-frequency interference (e.g., GSM, Wi-Fi) without impacting the 3 MHz signal bandwidth. As shown in Figure 32 of SBOS563G, EMIRR exceeds 80 dB below 100 MHz and remains >40 dB up to 1 GHz - confirming effective rejection while preserving AC performance for baseband signals. No external filtering is needed for most portable applications.
Can the OPA2314AIDGK be used in single-supply photodiode transimpedance amplifier configurations?
Yes. The OPA2314AIDGK's rail-to-rail input (extending 200 mV beyond V–) and output (within 20 mV of V– at 10 kΩ) make it ideal for single-supply TIA designs. Its 0.2 pA input bias current minimizes dark-current error, and 14 nV/√Hz noise preserves SNR in low-light detection. Use a feedback capacitor (e.g., 0.3–1.5 pF) to control bandwidth and prevent oscillation - as validated in TI's TIPD170 reference design.
What is the thermal resistance (RθJA) of the OPA2314AIDGK in its DGK package?
The junction-to-ambient thermal resistance (RθJA) for the OPA2314AIDGK in the 8-pin MSOP (DGK) package is 191.2 °C/W, per Section 6.5 of SBOS563G. This value assumes standard JEDEC 2S2P board conditions. With the thermal pad properly soldered to a V– copper plane, RθJB drops to 20.1 °C/W - improving power dissipation capability by >90% and enabling reliable operation at full ambient temperature range.
OPA2314AIDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-VSSOP
OPA2314AIDGK FAQ
1.How can I place an order for OPA2314AIDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2314AIDGK 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 OPA2314AIDGK reliable?
The price and inventory of OPA2314AIDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2314AIDGK is usually 5 days.
3.What payment methods are accepted for OPA2314AIDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2314AIDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2314AIDGK?
OPA2314AIDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2314AIDGK 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 OPA2314AIDGK?
For technical support, including OPA2314AIDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2314AIDGK requirements.
6.How does Aetrix verify that OPA2314AIDGK is sourced from the original manufacturer or authorized distributors?
All OPA2314AIDGK 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 OPA2314AIDGK meets industry standards.
7.What is the process for return or replacement of OPA2314AIDGK?
All OPA2314AIDGK units undergo pre-shipment inspection (PSI). If there is an issue with OPA2314AIDGK, 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 OPA2314AIDGK part is unused and in its original packaging.
Return procedure for OPA2314AIDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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