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Texas Instruments OPA310SIDCKR
- Part No.:
- OPA310SIDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
OPA310SIDCKR.pdf
- Description:
- OP AMP
- Quantity:
- Payment:
- Shipping:
Inventory:3,320
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Product details
Overview
OPA310SIDCKR from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage (1.5V–5.5V), high-output-current (±150mA typical at 5.5V), fast-shutdown (0.9µs enable time) applications. It features 3MHz gain bandwidth, ±250µV typical input offset voltage, and operates across –40°C to +125°C - ideal for LED drivers and precision current-sensing circuits in optical modules.
For engineers reviewing the OPA310SIDCKR datasheet, OPA310SIDCKR pinout, OPA310SIDCKR application, or OPA310SIDCKR equivalent, this page delivers verified electrical specs, SC70-5 package details, shutdown timing behavior, thermal performance data, and real-world use cases in lighting, sensing, and industrial analog signal chains.
Technical Context
The OPA310SIDCKR implements a robust CMOS input stage with fail-safe inputs (no diode to V+), enabling overvoltage tolerance up to 6.0V beyond rails. Its internal RFI/EMI filtering and unity-gain stability support clean operation driving capacitive loads up to 250pF without oscillation.
It integrates thermal shutdown and internal current limiting, delivering ≥110mA short-circuit output current at 5.5V while maintaining rail-to-rail swing (≤10mV from rails at 10kΩ load). The shutdown function asserts high-impedance output and reduces quiescent current to 0.265µA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V systems without level shifting. |
| Gain Bandwidth Product | 3MHz at 5.5V - enables stable closed-loop operation up to ~300kHz with G=10, suitable for fast-settling sensor buffers. |
| Output Current (ISC) | ±110mA min at 5.5V - drives LEDs, laser diodes, or 4–20mA loop transmitters directly without external boost stages. |
| Input Offset Voltage | ±250µV typical - ensures <0.01% error in precision reference buffering and low-side current sensing at room temperature. |
| Shutdown Enable Time | 0.9µs typical - allows microsecond-scale power cycling in duty-cycled optical biasing or burst-mode sensing. |
| Input Voltage Noise | 16nV/√Hz at 1kHz - preserves SNR in microphone preamps and low-level analog front-ends. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and telecom module environments. |
Pinout & Package
OPA310SIDCKR is packaged in a 5-pin SC70 (DCK) footprint measuring 2.0mm × 1.25mm, with exposed pad option for enhanced thermal dissipation. Pin 1 is IN+, pin 2 is V–, pin 3 is IN–, pin 4 is OUT, and pin 5 is V+ - fully compatible with standard SC70 pick-and-place tooling and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Noninverting input | High-impedance (100GΩ || 0.5pF) node accepting rail-to-rail common-mode signals; no ESD diode to V+. |
| V– | Negative supply / ground | Serves as reference for single-supply operation; input pins tolerate –0.5V below V– (current-limited to 10mA). |
| IN– | Inverting input | Matches IN+ in impedance and overvoltage robustness; enables precision differential or transimpedance configurations. |
| OUT | Amplifier output | Delivers ±110mA into short circuit; swings within 10mV of rails at 10kΩ load; drives 250pF capacitive loads stably. |
| V+ | Positive supply | Accepts up to 7V absolute max; supplies internal bias and output stage; supports wide-input-range operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 1.8V and 3.3V systems - critical for battery-powered optical modules. |
| Fast shutdown (0.9µs) | Reduces average power in pulsed applications (e.g., TEC control bursts) without compromising signal integrity on wake-up. |
| Fail-safe inputs | No diode clamp to V+ allows safe overvoltage handling up to 6.0V beyond rails - eliminates need for external clamping in noisy environments. |
| RFI/EMI filtered inputs | Integrated filtering suppresses 1.8GHz interference (75dB EMIRR), improving reliability in RF-dense industrial and telecom enclosures. |
| Thermal shutdown + current limit | Protects against sustained overload in LED driver or 4–20mA loop applications - prevents latch-up or permanent damage during fault conditions. |
Applications
| Optical Module Biasing | Low-Side Current Sensing |
|---|---|
Use Scenario: Precise DC bias control for laser diodes and EMLs in SFP+/QSFP transceivers. IC Role / Device Role / Timing Role: Reference buffer and current source driver with fast enable/disable for burst-mode operation. Use Value: 0.9µs enable time minimizes dead time between optical pulses; ±110mA output sustains modulation current without external FETs. |
Use Scenario: High-accuracy shunt-based current measurement in motor drives and power supplies. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail input for bidirectional sensing. Use Value: ±250µV offset and 16nV/√Hz noise ensure <0.1% error at 100mV sense voltage; 125°C rating supports under-hood deployment. |
| LED Driver | Reference Buffer |
Use Scenario: Constant-current drive for high-brightness LEDs in industrial lighting and displays. IC Role / Device Role / Timing Role: Transconductance amplifier converting DAC voltage to regulated LED current. Use Value: ±110mA output eliminates need for discrete pass transistor; rail-to-rail output maximizes headroom at low supply voltages. |
Use Scenario: Stabilizing voltage references for ADCs, DACs, and precision comparators in data acquisition systems. IC Role / Device Role / Timing Role: Low-noise, low-drift unity-gain buffer isolating reference from load variations. Use Value: 165µA quiescent current and ±250µV offset preserve reference accuracy while minimizing system power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA320SIDBVR | Lower input bias current (0.9pA vs. 1pA typ), higher GBW (20MHz), no shutdown, SC70-5 package. | Better for ultra-high-impedance sensor interfaces; unsuitable where fast power cycling is required. | Select OPA320SIDBVR when speed and input impedance outweigh shutdown need; choose OPA310SIDCKR when output current and enable timing are critical. |
| TLV9061IDCKR | Higher output current (±50mA), lower quiescent current (50µA), 10MHz GBW, SC70-5, no shutdown. | Optimized for low-power, high-speed general-purpose use; lacks OPA310's fail-safe inputs and EMI filtering. | Choose TLV9061IDCKR for cost-sensitive, low-IQ designs without EMI exposure; retain OPA310SIDCKR for robust optical/industrial environments requiring >±100mA drive. |
Compared with OPA320SIDBVR and TLV9061IDCKR, the OPA310SIDCKR uniquely combines high output current, sub-microsecond shutdown, fail-safe inputs, and integrated EMI filtering - making it the only SC70-5 op amp qualified for demanding optical biasing and industrial current-source applications.
Availability
OPA310SIDCKR is available at Aetrix Electronics and suitable for optical module manufacturing, industrial current-sensing systems, and LED driver designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for OPA310SIDCKR 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 signal-chain solutions.
The OPA310 family was designed specifically for high-output-current, low-voltage analog signal conditioning in optical communications, industrial automation, and portable instrumentation - emphasizing robustness, speed, and rail-to-rail flexibility.
FAQ
What is the maximum output current capability of the OPA310SIDCKR?
The OPA310SIDCKR delivers ±110mA minimum short-circuit output current at 5.5V supply, with ±150mA typical sourcing/sinking capability. This enables direct drive of laser diodes, high-brightness LEDs, and 4–20mA loop transmitters without external current-boosting components - verified per TI SBOSAA1H datasheet Section 6.7.
Does the OPA310SIDCKR support true rail-to-rail input and output operation?
Yes, the OPA310SIDCKR supports rail-to-rail input common-mode range (V– –0.1V to V+ +0.1V at 5.5V) and rail-to-rail output swing (within 10mV of rails at 10kΩ load). Its fail-safe input architecture includes no diode to V+, allowing overvoltage tolerance up to 6.0V beyond supply rails - confirmed in Sections 6.1 and 6.7 of the official datasheet.
What is the enable time from shutdown for the OPA310SIDCKR?
The OPA310SIDCKR features a fast enable time of 0.9µs typical from shutdown assertion to 90% output settling (tON), measured at G=+1, VCM = VS/2, and RL connected to V–. This parameter is specified in Section 6.7 under "Amplifier enable time (full shutdown)" and enables microsecond-scale power cycling in optical burst-mode applications.
Is the OPA310SIDCKR suitable for operation at 1.5V supply voltage?
Yes, the OPA310SIDCKR is fully specified from 1.5V to 5.5V supply voltage. At 1.5V, it maintains rail-to-rail input/output operation, 2.5MHz gain bandwidth, and 165µA typical quiescent current - meeting requirements for ultra-low-voltage battery-powered systems such as portable medical sensors and wearables, as documented in Section 6.3 and 6.7.
How does the OPA310SIDCKR handle electromagnetic interference (EMI)?
The OPA310SIDCKR incorporates internal RFI and EMI filtered input pins, achieving 75dB electro-magnetic interference rejection ratio (EMIRR) at 1.8GHz. This design mitigates noise coupling in electrically noisy environments like motor drives and telecom base stations - a feature explicitly called out in Section 1 (Features) and quantified in Section 6.7 of the SBOSAA1H datasheet.
OPA310SIDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 165µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 1.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
OPA310SIDCKR FAQ
1.How can I place an order for OPA310SIDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA310SIDCKR 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 OPA310SIDCKR reliable?
The price and inventory of OPA310SIDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA310SIDCKR is usually 5 days.
3.What payment methods are accepted for OPA310SIDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA310SIDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA310SIDCKR?
OPA310SIDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA310SIDCKR 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 OPA310SIDCKR?
For technical support, including OPA310SIDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA310SIDCKR requirements.
6.How does Aetrix verify that OPA310SIDCKR is sourced from the original manufacturer or authorized distributors?
All OPA310SIDCKR 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 OPA310SIDCKR meets industry standards.
7.What is the process for return or replacement of OPA310SIDCKR?
All OPA310SIDCKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA310SIDCKR, 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 OPA310SIDCKR part is unused and in its original packaging.
Return procedure for OPA310SIDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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