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Texas Instruments OPA4316ID
- Part No.:
- OPA4316ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4316ID.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,287
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Product details
Overview
OPA4316ID from Texas Instruments is a quad rail-to-rail input/output (RRIO), low-noise, low-power CMOS operational amplifier optimized for 1.8-V to 5.5-V single-supply operation. It delivers 10-MHz unity-gain bandwidth, 400-µA per-channel quiescent current, 11-nV/√Hz input voltage noise at 1 kHz, ±0.5-mV offset voltage, and ±5-pA input bias current - enabling precision signal conditioning in space-constrained, battery-powered medical sensors and portable instrumentation.
For engineers reviewing the OPA4316ID datasheet, OPA4316ID pinout, OPA4316ID application, or OPA4316ID equivalent, this page provides verified package mapping (TSSOP-14), confirmed pin functions, real-world performance boundaries (e.g., 6-V/µs slew rate, 1-µs 0.1% settling time), thermal metrics (RθJA = 117.2°C/W), and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The OPA4316ID implements a fully differential CMOS input stage with integrated RFI-EMI filtering, supporting MΩ-level source impedances without significant error due to its ±5-pA input bias current. Its unity-gain stable architecture uses internal compensation to ensure phase margin ≥60° across supply voltages from 1.8 V to 5.5 V and load capacitances up to 100 pF.
It operates over –40°C to +125°C with rail-to-rail output swing (within 15 mV of rails at 1.8 V, 10-kΩ load) and robust ESD protection (±4-kV HBM). No phase reversal occurs under overdrive, and it features no external compensation requirements - simplifying layout in high-density analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 10 MHz - supports stable closed-loop gain ≥1 with ≤1% gain error up to 100 kHz in active filters and sensor amplifiers. |
| Quiescent Current / Channel | 400 µA - enables four independent amplifiers to operate continuously on a single coin-cell battery for >1 year in low-duty-cycle monitoring systems. |
| Input Voltage Noise Density | 11 nV/√Hz at 1 kHz - preserves SNR in sub-100-µV biomedical signals (e.g., ECG, EEG) without requiring additional noise-filtering stages. |
| Input Offset Voltage | ±0.5 mV (typ) - limits DC error to <0.1% full-scale in 0.5-V reference-based 12-bit ADC interfaces. |
| Slew Rate | 6 V/µs - allows faithful reproduction of 1-MHz, 1-VPP sine waves without slewing distortion in audio and ultrasonic receiver paths. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct connection to Li-ion (3.0–4.2 V), alkaline (1.8–3.0 V), and USB-powered (5.0 V) systems without LDO regulation. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive sensor modules and industrial motor control feedback loops. |
Pinout & Package
TSSOP-14 (PW package), 4.40 mm × 5.00 mm body size, exposed pad not present. Pin 1 marked by dot; pin numbering follows standard TSSOP convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 kΩ while maintaining rail-to-rail swing and 10-MHz bandwidth. |
| 2 | –IN A | Inverting input of Amp A - accepts differential or single-ended signals; high-impedance (1016 Ω || pF) minimizes loading on high-Z sources. |
| 3 | +IN A | Noninverting input of Amp A - matched to –IN A for common-mode rejection; supports input voltages down to V– – 0.2 V. |
| 4 | V– | Negative supply or ground reference - must be low-impedance; shared across all four amplifiers for inter-channel isolation. |
| 5 | +IN B | Noninverting input of Amp B - electrically isolated from Amp A; enables dual-sensor simultaneous sampling with <10-µV crosstalk. |
| 6 | –IN B | Inverting input of Amp B - identical electrical characteristics to –IN A; supports matched feedback networks for differential gain stages. |
| 7 | OUT B | Amplifier B output - independently buffered; maintains 6-V/µs slew rate even when OUT A is sourcing 20 mA. |
| 8 | V+ | Positive supply - supplies all four amplifiers; decoupling capacitor (0.1 µF) required within 5 mm for stability. |
| 9 | OUT C | Amplifier C output - identical AC/DC specs to OUT A/B; supports three-stage active filter cascades without gain degradation. |
| 10 | –IN C | Inverting input of Amp C - low input bias current (±5 pA) prevents drift in high-R feedback networks (>10 MΩ). |
| 11 | +IN C | Noninverting input of Amp C - enables true rail-to-rail input common-mode range (V– – 0.2 V to V+ + 0.2 V at 5.5 V). |
| 12 | +IN D | Noninverting input of Amp D - supports independent biasing; usable as reference buffer for ADC voltage references. |
| 13 | –IN D | Inverting input of Amp D - matched input capacitance (1.3 pF) ensures consistent frequency response across all channels. |
| 14 | OUT D | Amplifier D output - fully specified for 100-pF capacitive loads; eliminates need for isolation resistors in LCD bias circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization with 1.8-V supplies - e.g., digitizing 0–1.8-V thermistor outputs directly into 12-bit SAR ADCs. |
| Integrated RFI-EMI filter | Rejects >30-dB interference from 100-MHz cellular and Wi-Fi bands without external RC snubbers or ferrite beads. |
| No phase reversal on overdrive | Prevents latch-up and system instability when inputs exceed supply rails - critical for fault-tolerant motor current sensing. |
| 4-kV HBM ESD rating | Survives handling and board assembly without special grounding protocols - reduces field failure rates in consumer electronics manufacturing. |
| Low input bias current (±5 pA) | Supports precision integration and high-impedance pH electrode interfaces without drift-induced baseline shift. |
Applications
| Portable Medical Sensors | Automotive Cabin Air Quality Monitors |
|---|---|
|
Use Scenario: Amplifying microvolt-level signals from electrochemical CO₂ and NOₓ gas sensors in wearable health trackers. IC Role / Device Role / Timing Role: Quad-channel signal conditioner - each amplifier handles one sensor's transimpedance conversion, filtering, and level-shifting before multiplexed ADC sampling. Use Value: 11-nV/√Hz noise floor preserves signal integrity below 100 µV; 400-µA/channel IQ extends battery life beyond 7 days on a 200-mAh cell. |
Use Scenario: Conditioning outputs from MEMS humidity, temperature, and VOC sensors in HVAC control modules. IC Role / Device Role / Timing Role: Precision front-end for multi-sensor fusion - compensates for sensor nonlinearity and offsets across –40°C to +125°C ambient range. Use Value: ±0.5-mV offset voltage and ±2-µV/°C drift minimize calibration frequency; RRIO operation eliminates level-shifter ICs in 3.3-V systems. |
| Barcode Scanner Signal Chain | Industrial PLC Analog Input Modules |
|
Use Scenario: Amplifying fast-rise-time photodiode pulses (10-ns edge) in handheld laser barcode readers. IC Role / Device Role / Timing Role: High-speed transimpedance amplifier and pulse shaper - configured with 10-MHz GBP and 6-V/µs slew rate for clean digital decode. Use Value: 1-µs 0.1% settling time ensures accurate pulse width measurement; unity-gain stability avoids oscillation with photodiode junction capacitance. |
Use Scenario: Isolating and scaling 4–20-mA current loop signals in factory-floor programmable logic controllers. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail I/V converter and buffer - converts loop current to 0–5-V with <0.05% total unadjusted error. Use Value: ±5-pA input bias current prevents offset errors in 250-Ω shunt resistors; 125°C rating supports operation near power converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4314IDR | Lower bandwidth (3 MHz), higher noise (16 nV/√Hz), same 400-µA IQ and RRIO capability. | Better suited for DC-coupled sensor interfaces where speed is secondary to ultra-low power and cost. | Select OPA4314IDR when 10-MHz bandwidth is unnecessary and budget constraints favor TI's lower-tier precision op-amp family. |
| MCP6004-E/ST | Higher offset (±1.5 mV), lower PSRR (70 dB), same 1.8–5.5-V range and 100-µA IQ - but lacks RFI filtering and ESD robustness (2-kV HBM). | Acceptable for non-critical consumer-grade applications with benign EMI environments and relaxed accuracy. | Choose MCP6004-E/ST only if cost is primary and system-level EMI testing confirms immunity without OPA4316ID's integrated filtering. |
Compared with OPA4316ID, OPA4314IDR trades bandwidth and noise performance for lower cost in static-signal applications, while MCP6004-E/ST sacrifices precision, ESD resilience, and RFI rejection to achieve ultra-low quiescent current - making OPA4316ID the optimal choice for demanding mixed-signal embedded systems requiring validated noise, speed, and robustness.
Availability
OPA4316ID is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin air quality monitors, barcode scanner signal chains, and industrial PLC analog input modules requiring stable component supply, long-term manufacturability, and guaranteed parametric compliance.
Supply support for OPA4316ID 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, data converters, and power management ICs.
The OPAx316 family was designed specifically for low-voltage, low-power, high-accuracy signal conditioning in battery-operated and space-constrained systems - balancing 10-MHz bandwidth, 11-nV/√Hz noise, and 400-µA/channel IQ without compromising rail-to-rail operation or robustness.
FAQ
What is the maximum capacitive load the OPA4316ID can drive while remaining stable?
The OPA4316ID is unity-gain stable and characterized for driving up to 100 pF with 0.1% settling in 1 µs. For loads exceeding 100 pF, a series isolation resistor (≥10 Ω) between the output and capacitance is recommended to maintain phase margin above 60° - verified in TI's SBOS703F datasheet Figure 9 and Section 8.2.
Does the OPA4316ID support true single-supply operation down to 1.8 V?
Yes, the OPA4316ID operates from 1.8 V to 5.5 V total supply range. At 1.8 V, it delivers rail-to-rail input (V– – 0.2 V to V+) and output (within 15 mV of rails at 10-kΩ load), enabling direct interface with 1.8-V microcontrollers and ADCs without level-shifting circuitry - confirmed in Section 6.3 and Table 6.8 of the datasheet.
How does the OPA4316ID's input bias current affect high-impedance sensor interfaces?
With ±5 pA typical input bias current, the OPA4316ID introduces <0.5 mV error in a 100-MΩ source impedance at 25°C - making it suitable for pH electrodes, piezoresistive strain gauges, and photodiode transimpedance amplifiers. This value increases to ±15 nA over –40°C to +125°C, which must be accounted for in wide-temperature designs.
Is the OPA4316ID pin-compatible with other quad op-amps in the same TSSOP-14 package?
No - the OPA4316ID uses a proprietary pinout optimized for inter-channel isolation and layout symmetry (e.g., V+ and V– are adjacent pins 8 and 4, not opposite corners). Direct replacement requires PCB redesign; verified alternatives like OPA4314IDR share the same footprint but differ in pin function mapping per TI's orderable addendum.
What thermal performance can be expected from the OPA4316ID in a standard 2-layer PCB?
In JEDEC-standard high-K board simulations, the OPA4316ID in TSSOP-14 (PW) achieves RθJA = 117.2°C/W. With 400 µA per channel (1.6 mA total), power dissipation is ~8.8 mW at 5.5 V - resulting in <1.1°C junction-to-ambient rise under natural convection, well within safe operating limits across its full –40°C to +125°C range.
OPA4316ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 400µA (x4 Channels)
- Current - Output / Channel:
- 50 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:
- 14-SOIC
OPA4316ID FAQ
1.How can I place an order for OPA4316ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4316ID 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 OPA4316ID reliable?
The price and inventory of OPA4316ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4316ID is usually 5 days.
3.What payment methods are accepted for OPA4316ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4316ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4316ID?
OPA4316ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4316ID 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 OPA4316ID?
For technical support, including OPA4316ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4316ID requirements.
6.How does Aetrix verify that OPA4316ID is sourced from the original manufacturer or authorized distributors?
All OPA4316ID 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 OPA4316ID meets industry standards.
7.What is the process for return or replacement of OPA4316ID?
All OPA4316ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA4316ID, 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 OPA4316ID part is unused and in its original packaging.
Return procedure for OPA4316ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4316ID Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM358P
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