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Texas Instruments OPA4310IPWR
- Part No.:
- OPA4310IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- -
- Datasheet:
-
OPA4310IPWR.pdf
- Description:
- QUAD, 5.5-V, 3-MHZ 150-MA HIGH-O
- Quantity:
- Payment:
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Product details
Overview
OPA4310IPWR from Texas Instruments is a quad-channel, rail-to-rail input/output operational amplifier optimized for low-voltage (1.5V–5.5V), high-output-current (±110mA min at 5.5V) applications requiring fast settling (1.3µs to 0.1%), low quiescent current (165µA/ch), and robust EMI/RFI rejection. It serves as a precision buffer, current driver, or guard amplifier in LED biasing, 4–20mA loop circuits, and optical module front-ends.
For engineers reviewing the OPA4310IPWR datasheet, OPA4310IPWR pinout, OPA4310IPWR application, or OPA4310IPWR equivalent, key selection criteria include its 3MHz gain-bandwidth product, ±250µV typical input offset voltage, –40°C to +125°C operating range, fail-safe inputs (no diodes to V+), and ability to drive 250pF capacitive loads without sustained oscillation.
Technical Context
The OPA4310IPWR integrates four independent amplifiers in a single SOIC-14 package with fully rail-to-rail input and output swing, enabling operation down to 1.5V supply while maintaining precision across temperature. Its internal RFI/EMI filtering and no-phase-reversal input overdrive behavior simplify layout in noisy environments like industrial sensor interfaces and optical transceivers.
Each channel features unity-gain stability, 16nV/√Hz input voltage noise at 1kHz, and short-circuit protection delivering ≥75mA minimum output current across temperature at 5.5V. The device lacks shutdown functionality (non-S variant), distinguishing it from the OPA4310S family members.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - enables compact multi-channel signal conditioning without inter-chip matching drift. |
| Supply Voltage Range | 1.5V to 5.5V - supports direct integration with Li-ion, coin-cell, and 3.3V/5V logic systems. |
| Gain Bandwidth Product | 3MHz at 5.5V - ensures stable closed-loop response up to ~300kHz in G=10 configuration. |
| Output Current (min) | ±110mA at 5.5V - drives LEDs, laser diodes, or 4–20mA load resistors without external boost stages. |
| Input Offset Voltage (typ) | ±250µV - enables accurate DC-coupled sensing in reference buffers and current-sense amplifiers. |
| Quiescent Current (typ) | 165µA per channel - achieves <660µA total IQ for battery-powered quad-channel analog front-ends. |
| Capacitive Load Drive | 250pF - eliminates need for isolation resistors when driving ADC input filters or long PCB traces. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and telecom equipment use. |
Pinout & Package
OPA4310IPWR is housed in a 14-pin SOIC (D) package (8.65mm × 6mm), with exposed pad optional per TI design guidelines. Pin functions are electrically identical across SOIC and TSSOP variants per datasheet Table 5-5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1– (Pin 2) | Inverting input, Channel 1 | Accepts differential or single-ended feedback signals; rail-to-rail common-mode range supports ground-referenced designs. |
| IN1+ (Pin 3) | Noninverting input, Channel 1 | High-impedance (100GΩ || 0.5pF) node suitable for high-Z sensors or reference voltage buffering. |
| V+ (Pin 4) | Positive supply | Single-supply or split-supply rail; must be decoupled locally with ≥100nF ceramic capacitor. |
| IN2+ (Pin 5) | Noninverting input, Channel 2 | Independent input path-no crosstalk specified; usable for dual-path signal conditioning. |
| IN2– (Pin 6) | Inverting input, Channel 2 | Matches IN1– electrical specs; supports matched gain-setting resistor networks across channels. |
| OUT2 (Pin 7) | Output, Channel 2 | Delivers ±110mA min into load; output swing within 9mV of rails at 10kΩ load (5.5V). |
| OUT3 (Pin 8) | Output, Channel 3 | Same drive capability and rail-swing performance as OUT1/OUT2/OUT4; thermally coupled in shared die. |
| IN3– (Pin 9) | Inverting input, Channel 3 | Fail-safe structure: no diode to V+, enabling safe overvoltage tolerance beyond supply rails. |
| IN3+ (Pin 10) | Noninverting input, Channel 3 | Low input bias current (±1pA typ) preserves accuracy in high-impedance transducer interfaces. |
| V– (Pin 11) | Negative supply / Ground | Reference node for all channels; thermal pad (if used) must connect to V– per TI layout guidance. |
| IN4+ (Pin 12) | Noninverting input, Channel 4 | Supports simultaneous multi-channel acquisition or redundancy schemes with matched specs. |
| IN4– (Pin 13) | Inverting input, Channel 4 | Identical CMRR (83–95dB) and PSRR (±10µV/V) to other channels for consistent noise rejection. |
| OUT4 (Pin 14) | Output, Channel 4 | Full 3MHz bandwidth preserved under 250pF load; slew rate = 3V/µs at 5.5V supply. |
| OUT1 (Pin 1) | Output, Channel 1 | Primary output; shortest trace routing recommended for highest-speed applications (e.g., laser modulation). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O swing | Enables full dynamic range utilization in 1.5V–5.5V single-supply systems without level-shifting circuitry. |
| Fail-safe inputs (no V+ diodes) | Permits input overvoltage up to 6.0V beyond V– without latch-up or damage-critical for sensor fault tolerance. |
| Integrated RFI/EMI filtering | Reduces susceptibility to GSM, Wi-Fi, and switching regulator noise without external RC filters on inputs. |
| 250pF capacitive load drive | Eliminates need for output series resistors when interfacing with ADCs, cables, or LCD column drivers. |
| Low 16nV/√Hz input noise | Preserves SNR in microphone preamps and low-level current-sense amplification (e.g., shunt-based 4–20mA). |
| –40°C to +125°C operation | Validated performance across automotive under-hood and industrial control ambient conditions without derating. |
Applications
| Optical Module Biasing | 4–20mA Loop Driver |
|---|---|
|
Use Scenario: Precise current control for laser diodes or EMLs in SFP+/QSFP transceivers with temperature compensation feedback. IC Role / Device Role / Timing Role: Quad-channel OPA4310IPWR configures as two independent current sources (Ch1/Ch2) and two reference/guard amplifiers (Ch3/Ch4) in same footprint. Use Value: ±110mA output current and 3MHz GBW enable fast modulation response; rail-to-rail I/O simplifies DAC interface at 3.3V supply. |
Use Scenario: Industrial process control transmitter converting sensor voltage to standardized 4–20mA current output over 2-wire loop. IC Role / Device Role / Timing Role: OPA4310IPWR acts as precision voltage-to-current converter with integrated sense-resistor buffer and loop compliance amplifier. Use Value: Low 250µV offset and 165µA/ch IQ minimize zero-point error and power consumption in battery-backed field devices. |
| LED Lighting Driver | Low-Side Current Sensing |
|
Use Scenario: Constant-current driving of high-brightness LEDs in architectural lighting, where thermal management requires efficient analog dimming. IC Role / Device Role / Timing Role: OPA4310IPWR operates as a high-current transconductance amplifier with PWM-compatible enable via external FET gate control. Use Value: 3MHz bandwidth supports >100kHz PWM dimming without phase lag; 250pF drive capability stabilizes feedback loop with large-area LED capacitance. |
Use Scenario: Accurate measurement of motor or solenoid coil current using shunt resistor in ground-return path of 12V/24V industrial systems. IC Role / Device Role / Timing Role: OPA4310IPWR configured as low-side differential amplifier with matched resistor network for 20V/V gain and rail-to-rail output. Use Value: Fail-safe inputs tolerate common-mode transients up to 6V beyond ground; ±250µV offset ensures <0.1% full-scale error at 100mV shunt drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4322IPWR | Lower IQ (40µA/ch), lower GBW (20MHz), no fail-safe inputs, higher offset (±1.6mV) | Better for high-speed, low-power signal chain stages where EMI immunity is less critical | Select when bandwidth >3MHz is required and input overvoltage risk is absent |
| TLV9064IPWR | Higher IQ (530µA/ch), higher GBW (10MHz), rail-to-rail I/O, no fail-safe inputs, higher offset (±1.6mV) | Suitable for high-precision, high-speed data acquisition where supply headroom allows 5.5V operation | Choose when faster settling (<500ns) and lower noise (12nV/√Hz) outweigh IQ and EMI robustness needs |
Compared with OPA4310IPWR, OPA4322IPWR trades EMI resilience and ultra-low IQ for higher speed and lower cost, while TLV9064IPWR prioritizes AC performance and precision at significantly higher quiescent power-making OPA4310IPWR optimal for rugged, low-power, medium-bandwidth industrial analog front-ends.
Availability
OPA4310IPWR is available at Aetrix Electronics and suitable for optical transceiver modules, 4–20mA industrial transmitters, and LED driver designs requiring stable component supply, extended temperature support, and production-ready qualification.
Supply support for OPA4310IPWR 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 industrial-grade signal conditioning ICs.
The OPAx310 family was designed specifically for low-voltage, high-output-current applications in optical communications, industrial automation, and portable instrumentation-emphasizing EMI robustness, rail-to-rail operation, and thermal reliability.
FAQ
What is the maximum capacitive load the OPA4310IPWR can drive without oscillation?
The OPA4310IPWR is characterized to drive up to 250pF capacitive load with no sustained oscillations when configured in unity-gain, per Section 6.7 of the datasheet. This specification holds for RL = 10kΩ to VS/2 and ensures stability without external compensation components in typical sensor or ADC interface configurations.
Does the OPA4310IPWR have shutdown functionality?
No, the OPA4310IPWR is the non-shutdown variant of the OPAx310 family. Shutdown capability is only available in the OPA4310S part numbers (e.g., OPA4310SRTE). The OPA4310IPWR operates continuously when powered and does not include SHDN pins or related control circuitry.
What is the input common-mode voltage range for the OPA4310IPWR at 1.8V supply?
At VS = 1.8V, the OPA4310IPWR supports a common-mode input range from V– to V+, meaning it accepts signals from ground up to the positive rail-enabling true rail-to-rail input operation essential for single-supply sensor interfaces and reference buffers.
Can the OPA4310IPWR be used in a single-supply 1.5V system?
Yes, the OPA4310IPWR is fully specified from 1.5V to 5.5V supply. At 1.5V, it maintains rail-to-rail input/output swing, 2.5MHz gain-bandwidth, and 165µA typical quiescent current per channel-making it suitable for ultra-low-voltage battery-powered instrumentation and wearables.
How does the fail-safe input architecture benefit system reliability?
The OPA4310IPWR omits diodes from inputs to V+, preventing latch-up during input overvoltage events up to 6.0V beyond V–. This protects against transient coupling from relays, motors, or hot-plug connectors-reducing field failures in industrial and automotive applications where such faults are common.
OPA4310IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- -
- Number of Circuits:
- -
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
OPA4310IPWR FAQ
1.How can I place an order for OPA4310IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4310IPWR 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 OPA4310IPWR reliable?
The price and inventory of OPA4310IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4310IPWR is usually 5 days.
3.What payment methods are accepted for OPA4310IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4310IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4310IPWR?
OPA4310IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4310IPWR 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 OPA4310IPWR?
For technical support, including OPA4310IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4310IPWR requirements.
6.How does Aetrix verify that OPA4310IPWR is sourced from the original manufacturer or authorized distributors?
All OPA4310IPWR 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 OPA4310IPWR meets industry standards.
7.What is the process for return or replacement of OPA4310IPWR?
All OPA4310IPWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4310IPWR, 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 OPA4310IPWR part is unused and in its original packaging.
Return procedure for OPA4310IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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