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Texas Instruments OPA317ID
- Part No.:
- OPA317ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA317ID.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:906
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Product details
Overview
OPA317ID from Texas Instruments is a single-channel, rail-to-rail input/output, zero-drift operational amplifier optimized for precision low-voltage operation (1.8 V to 5.5 V). It delivers 20 μV typical offset voltage, 300 kHz gain-bandwidth, 35 μA maximum quiescent current, and 108 dB typical CMRR - enabling high-accuracy signal conditioning in battery-powered sensor front-ends and medical instrumentation.
For engineers reviewing the OPA317ID datasheet, OPA317ID pinout, OPA317ID application, or OPA317ID equivalent, this page provides verified technical context, package-specific pin functions, real-world use-value mapping, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The OPA317ID uses a proprietary auto-calibration architecture that corrects input offset every 8 μs without introducing 1/f noise or aliasing artifacts. Its internal EMI/RFI filtering includes dual-mode (common-mode and differential) input low-pass filtering with ~8 MHz –3 dB cutoff.
It features a class AB output stage capable of driving ≥10 kΩ loads across the full supply range, with rail-to-rail input common-mode range extending 0.1 V beyond both rails and output swing within 30 mV of each rail at full load - supporting direct interfacing with 12-bit+ SAR ADCs in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - enables direct battery operation (e.g., single Li-ion or two alkaline cells) without regulation. |
| Offset Voltage (max) | ±90 μV - ensures ≤0.0045% error in 2-V full-scale measurement systems at room temperature. |
| Offset Drift | 0.05 μV/°C - contributes <0.6 μV total drift over –40°C to +125°C, critical for uncalibrated industrial sensors. |
| Quiescent Current | 35 μA max per amplifier - supports multi-year operation in coin-cell–powered IoT nodes. |
| Gain-Bandwidth | 300 kHz - sufficient for DC-coupled transducer amplification and anti-aliasing filtering up to ~30 kHz. |
| CMRR | 108 dB typical - rejects >99.99% of common-mode interference in noisy industrial environments. |
| Input Bias Current | ±275 pA max - minimizes voltage error across high-impedance sources (e.g., pH electrodes, thermopiles). |
Pinout & Package
OPA317ID is supplied in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, rated for operation from –40°C to +125°C. This package supports automated optical inspection and standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left floating or tied to ground; not usable as feedback node. |
| 2 | –IN | Inverting input - accepts feedback network; input bias current flows out (–275 pA max) under normal operation. |
| 3 | +IN | Noninverting input - high-impedance node (≥1013 Ω); common-mode range extends 0.1 V beyond V– and V+ rails. |
| 4 | V– | Negative supply terminal - reference for all internal circuitry; must be stable and low-impedance. |
| 5 | OUT | Amplifier output - rail-to-rail swing (within 30 mV of rails), capable of sourcing/sinking ±5 mA short-circuit current. |
| 6 | NC | No internal connection - electrically isolated; no routing or thermal coupling required. |
| 7 | V+ | Positive supply terminal - accepts 1.8–5.5 V; PSRR of 108 dB suppresses ripple from unregulated battery sources. |
| 8 | NC | No internal connection - unused pad; may be grounded for thermal relief but has no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift architecture | Auto-calibrates offset every 8 μs - eliminates time- and temperature-dependent drift without 1/f noise penalty. |
| Rail-to-rail I/O | Input common-mode includes both rails; output swings to within 30 mV - maximizes dynamic range in 1.8-V systems. |
| Internal EMI/RFI filter | 8-MHz low-pass on inputs - reduces rectified interference from GSM, Wi-Fi, or switching regulators by >40 dB. |
| Low quiescent current | 35 μA max - enables always-on sensing in energy-harvesting or battery-backed applications. |
| High PSRR/CMRR | 108 dB typical - maintains accuracy when powered directly from noisy DC-DC converters or shared supply rails. |
Applications
| Electronic Scales | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying microvolt-level signals from strain-gauge bridges in portable weighing devices. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with ultra-low offset and drift to preserve weight resolution across temperature. Use Value: ±90 μV max offset ensures ≤0.0045% full-scale error at 2-V bridge excitation - meeting Class III legal-for-trade requirements. |
Use Scenario: Front-end amplification of ECG, EEG, or pulse oximetry sensor outputs in handheld monitors. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input buffer driving 12-bit SAR ADCs with minimal power consumption. Use Value: 35 μA quiescent current extends battery life to >100 hours on a single CR2032 cell while maintaining diagnostic-grade DC accuracy. |
| Battery-Powered Instruments | Current Sense |
Use Scenario: Precision voltage monitoring in solar charge controllers, smart meters, and portable test equipment. IC Role / Device Role / Timing Role: High-impedance, low-drift buffer for shunt-based voltage measurements referenced to system ground. Use Value: 0.05 μV/°C drift limits thermal error to <0.6 μV over –40°C to +125°C - eliminating need for periodic recalibration. |
Use Scenario: Bidirectional current sensing in motor control or battery protection circuits using low-value shunts (e.g., 10 mΩ). IC Role / Device Role / Timing Role: High-common-mode-rejection amplifier rejecting supply noise while resolving ±100 μV sense voltages. Use Value: 108 dB CMRR rejects >99.99% of 12-V bus ripple, enabling accurate sub-1% current measurement at 1-A full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AID | Lower offset (10 μV max), same Zerø-Drift architecture, but higher IQ (17 μA typ vs 21 μA typ for OPA317ID). | Preferred for ultra-high-precision DC measurements where offset budget is tighter; less suitable for ultra-low-power sleep modes. | Select OPA333AID when offset <15 μV is mandatory and supply current above 35 μA is acceptable. |
| MCP6V81-E/SN | Higher GBW (1 MHz), similar offset (25 μV max), but higher IQ (125 μA max) and no integrated EMI filter. | Better for AC-coupled or higher-frequency sensor interfaces; lacks OPA317ID's 8-MHz EMI rejection for noisy environments. | Choose MCP6V81-E/SN when bandwidth >500 kHz is required and EMI immunity is managed externally. |
Compared with OPA333AID and MCP6V81-E/SN, the OPA317ID uniquely balances ultra-low drift, integrated EMI filtering, and sub-35-μA quiescent current - making it optimal for cost-sensitive, battery-operated precision analog front-ends where robustness and power efficiency are co-prioritized.
Availability
OPA317ID is available at Aetrix Electronics and suitable for electronic scales, medical instrumentation, battery-powered instruments, current-sense circuits, and temperature measurement systems requiring stable component supply across extended product lifecycles.
Supply support for OPA317ID 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPA317ID belongs to TI's Zerø-Drift precision op-amp family, designed specifically for high-accuracy, low-power signal conditioning in cost-sensitive industrial, medical, and portable instrumentation applications.
FAQ
What is the maximum operating temperature range for the OPA317ID?
The OPA317ID is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range supports deployment in automotive engine compartments, industrial PLC modules, and outdoor environmental sensors without derating or external thermal management.
Does the OPA317ID require external compensation for unity-gain stability?
No - the OPA317ID is internally compensated and unity-gain stable across its full operating range (1.8 V to 5.5 V). No external capacitors or resistors are needed for stable operation in buffer, inverting, or non-inverting configurations with gains ≥1.
Can the OPA317ID drive capacitive loads directly?
The OPA317ID can reliably drive up to 100 pF without external isolation resistance. For loads exceeding 100 pF, a series resistor (typically 10–50 Ω) between the output and capacitive load is recommended to maintain phase margin and prevent peaking or oscillation.
How does the OPA317ID's internal EMI filter affect high-frequency signal integrity?
The OPA317ID's integrated 8-MHz input low-pass filter attenuates RF interference without degrading DC or low-frequency signal fidelity. Signals below 100 kHz experience negligible phase shift or amplitude loss, preserving accuracy in DC-coupled sensor applications.
Is the OPA317ID pin-compatible with other members of the OPAx317 family?
No - the OPA317ID (8-pin SOIC) is not pin-compatible with the 5-pin SOT-23 (OPA317DBVR) or SC70 (OPA317DCKR) variants. Pin 1 (NC) and pin 6 (NC) in the SOIC package have no internal connection, whereas the 5-pin versions route +IN and –IN to different pins and lack NC terminals.
OPA317ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.15V/µs
- Gain Bandwidth Product:
- 300 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 275 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 21µA
- Current - Output / Channel:
- -
- 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-SOIC
OPA317ID FAQ
1.How can I place an order for OPA317ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA317ID 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 OPA317ID reliable?
The price and inventory of OPA317ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA317ID is usually 5 days.
3.What payment methods are accepted for OPA317ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA317ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA317ID?
OPA317ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA317ID 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 OPA317ID?
For technical support, including OPA317ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA317ID requirements.
6.How does Aetrix verify that OPA317ID is sourced from the original manufacturer or authorized distributors?
All OPA317ID 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 OPA317ID meets industry standards.
7.What is the process for return or replacement of OPA317ID?
All OPA317ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA317ID, 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 OPA317ID part is unused and in its original packaging.
Return procedure for OPA317ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA317ID Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM358ADR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
Texas Instruments
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