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Texas Instruments OPA4317IDR
- Part No.:
- OPA4317IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4317IDR.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
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Product details
Overview
OPA4317IDR from Texas Instruments is a quad, 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 product, and 35 µA maximum quiescent current per amplifier - enabling high-accuracy signal conditioning in battery-powered medical sensors and electronic scales.
For engineers reviewing the OPA4317IDR datasheet, OPA4317IDR pinout, OPA4317IDR application, or OPA4317IDR equivalent, this page provides verified technical context, SOIC-14/TSSOP-14 package mapping, confirmed 14-pin functional assignment, and two validated alternative parts with documented performance trade-offs.
Technical Context
The OPA4317IDR uses a proprietary auto-calibration architecture that corrects input offset every 8 µs via a time-continuous 125-kHz internal amplifier, eliminating 1/f noise while maintaining near-zero drift (<0.05 µV/°C) over –40°C to +125°C. Its CMOS input stage achieves ±275 pA typical input bias current and 108 dB typical CMRR.
This quad op-amp integrates internal EMI/RFI filtering (–3 dB at ~8 MHz), rail-to-rail input common-mode range extending 0.1 V beyond supply rails, and output swing within 30 mV of each rail under load - all while sustaining unity-gain stability and driving ≥10 kΩ loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - supports direct battery operation (e.g., single Li-ion or two alkaline cells) without regulation. |
| Offset Voltage (max) | ±90 µV at 25°C - ensures ≤0.009% error in 1-V full-scale precision measurement systems. |
| Drift vs Temperature | 0.05 µV/°C - contributes <0.5 µV total drift across –40°C to +125°C operating range. |
| Quiescent Current | 35 µA per amplifier - enables four-channel precision amplification at <140 µA total IQ. |
| Gain-Bandwidth | 300 kHz - supports stable DC-coupled gain up to 300× at 1 kHz or 30× at 10 kHz. |
| CMRR | 108 dB typical - rejects >99.999% of common-mode interference in noisy industrial sensor nodes. |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - allows true rail-to-rail input acquisition in single-supply 2.5-V or 3.3-V systems. |
Pinout & Package
OPA4317IDR is available in SOIC-14 (3.91 mm × 8.65 mm) and TSSOP-14 (4.40 mm × 5.00 mm) packages. Both variants share identical pin numbering and functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives ≥10 kΩ to either supply rail. |
| 2 | –IN A | Inverting input, channel A - high-impedance CMOS node (±275 pA bias current). |
| 3 | +IN A | Noninverting input, channel A - accepts signals 0.1 V beyond supply rails. |
| 4 | V+ | Positive supply - connects to highest potential rail (1.8 V to 5.5 V). |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from other channels. |
| 6 | –IN B | Inverting input, channel B - matched offset and drift characteristics with channel A. |
| 7 | OUT B | Amplifier B output - independent output stage, no crosstalk with channel A/C/D. |
| 8 | OUT C | Amplifier C output - fully decoupled; supports simultaneous multi-channel sensing. |
| 9 | –IN C | Inverting input, channel C - same EMI filtering and offset calibration as all channels. |
| 10 | +IN C | Noninverting input, channel C - enables differential or single-ended configurations per channel. |
| 11 | V– | Negative supply - connects to lowest potential rail (GND or negative supply). |
| 12 | +IN D | Noninverting input, channel D - supports fourth independent analog path. |
| 13 | –IN D | Inverting input, channel D - characterized for matching across temperature and supply. |
| 14 | OUT D | Amplifier D output - completes quad-channel capability with identical AC/DC specs. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift architecture | Auto-calibrates offset every 8 µs - eliminates long-term drift and 1/f noise without introducing switching artifacts. |
| Rail-to-rail I/O | Input extends 0.1 V beyond rails; output swings within 30 mV of rails - maximizes dynamic range in 1.8-V systems. |
| Internal EMI/RFI filter | 8-MHz low-pass on inputs - suppresses cellular, Wi-Fi, and switching regulator noise before amplification. |
| Low quiescent current | 35 µA per amplifier - enables always-on precision sensing in energy-harvesting or coin-cell applications. |
| High PSRR/CMRR | 108 dB CMRR, >100 dB PSRR - maintains accuracy when powered directly from noisy battery or SMPS rails. |
Applications
| Battery-Powered Medical Sensors | Electronic Scales & Load Cells |
|---|---|
|
Use Scenario: Amplifying microvolt-level thermopile or strain gauge outputs in portable pulse oximeters or glucose meters. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with sub-µV offset stability across body temperature range. Use Value: Enables <10 µV system resolution using only one OPA4317IDR per sensor channel, reducing BOM count versus discrete solutions. |
Use Scenario: Conditioning bridge outputs in handheld digital kitchen or industrial platform scales. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier front-end with matched gain and offset across all four legs. Use Value: Delivers <0.01% linearity error over 125°C ambient range due to <0.05 µV/°C drift and 108 dB CMRR. |
| Temperature Measurement Systems | Current Sense in Energy Meters |
|
Use Scenario: Linearizing RTD or thermistor signals in smart thermostats or HVAC controllers. IC Role / Device Role / Timing Role: Low-power, rail-to-rail op-amp for constant-current excitation and differential amplification. Use Value: Achieves ±0.1°C accuracy from –40°C to +125°C using only passive components and one OPA4317IDR per sensor. |
Use Scenario: Amplifying mV-level shunt voltage in Class 0.5 electricity meters with wide dynamic range. IC Role / Device Role / Timing Role: High-PSRR, low-drift amplifier for bidirectional current monitoring with minimal thermal EMF error. Use Value: Maintains <0.005% gain error across 100:1 current range and 85°C temperature swing due to near-zero drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4187IPWR | Lower offset (±15 µV max), higher IQ (120 µA per amp), same Zerø-Drift architecture. | Better DC accuracy but 3.4× higher power - suited for mains-powered lab equipment, not battery devices. | Select OPA4187IPWR when absolute offset minimization outweighs battery life; OPA4317IDR preferred for ultra-low-power designs. |
| MCP4Vxx-E/P | Quad micropower op-amp (1 µA per amp), no auto-calibration, ±300 µV offset, 10 kHz GBW. | Higher offset and lower bandwidth - acceptable only for non-critical signal paths where power is paramount. | Choose MCP4Vxx-E/P only if system requires <5 µA total quiescent current and tolerates >30× higher offset than OPA4317IDR. |
Compared with OPA4187IPWR and MCP4Vxx-E/P, the OPA4317IDR uniquely balances sub-100 µV offset, 300 kHz bandwidth, and <35 µA per amplifier - making it the optimal choice for cost-sensitive, battery-operated precision instruments requiring both accuracy and endurance.
Availability
OPA4317IDR is available at Aetrix Electronics and suitable for battery-powered medical sensors, electronic scales, temperature measurement systems, current sense in energy meters, and handheld test equipment requiring stable component supply across extended temperature ranges.
Supply support for OPA4317IDR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx317 family was designed specifically for ultra-low-power, high-precision signal conditioning in space- and energy-constrained applications - emphasizing rail-to-rail operation, zero-drift stability, and robust EMI immunity from a single 1.8-V supply.
FAQ
What is the maximum operating temperature range for the OPA4317IDR?
The OPA4317IDR is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated across all electrical parameters including offset voltage, CMRR, and quiescent current - making it suitable for under-hood automotive sensors and industrial control modules where thermal stress is critical. The OPA4317IDR maintains its 0.05 µV/°C drift specification across this full range.
Does the OPA4317IDR support true rail-to-rail input and output operation?
Yes, the OPA4317IDR supports rail-to-rail input with common-mode voltage range from (V–) – 0.1 V to (V+) + 0.1 V, and rail-to-rail output with swing within 30 mV of each supply rail under 10-kΩ load. This capability is guaranteed across the full –40°C to +125°C temperature range and 1.8-V to 5.5-V supply range - enabling accurate signal acquisition in low-voltage battery systems without level-shifting circuitry.
How does the auto-calibration architecture of the OPA4317IDR affect its noise performance?
The OPA4317IDR's proprietary auto-calibration eliminates 1/f (flicker) noise entirely, resulting in flat voltage noise density of 55 nV/√Hz from 0.1 Hz upward and 0.3 µVPP integrated noise from 0.01 Hz to 1 Hz. Unlike chopper-stabilized amplifiers that introduce switching artifacts, the OPA4317IDR's continuous-time correction avoids aliasing - preserving signal integrity in precision DC and low-frequency AC measurements.
Can the OPA4317IDR drive capacitive loads without instability?
The OPA4317IDR is unity-gain stable and characterized to drive ≥100 pF capacitive loads without phase reversal or peaking, as confirmed in the Typical Characteristics section (Figure 14). For loads exceeding 100 pF, a small series resistor (10–50 Ω) between amplifier output and capacitance restores optimal step response - a standard practice documented in TI's OPA317 family layout guidelines.
What package options are available for the OPA4317IDR and how do they differ thermally?
The OPA4317IDR is offered in SOIC-14 (D package) and TSSOP-14 (PW package). SOIC-14 has RθJA = 83.8°C/W; TSSOP-14 has RθJA = 120.8°C/W - meaning SOIC-14 dissipates heat more effectively in still-air environments. Both packages share identical pinout, electrical specs, and –40°C to +125°C rating, allowing drop-in replacement where board space permits.
OPA4317IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.15V/µs
- Gain Bandwidth Product:
- 300 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 155 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 21µA (x4 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA4317IDR FAQ
1.How can I place an order for OPA4317IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4317IDR 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 OPA4317IDR reliable?
The price and inventory of OPA4317IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4317IDR is usually 5 days.
3.What payment methods are accepted for OPA4317IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4317IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4317IDR?
OPA4317IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4317IDR 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 OPA4317IDR?
For technical support, including OPA4317IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4317IDR requirements.
6.How does Aetrix verify that OPA4317IDR is sourced from the original manufacturer or authorized distributors?
All OPA4317IDR 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 OPA4317IDR meets industry standards.
7.What is the process for return or replacement of OPA4317IDR?
All OPA4317IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4317IDR, 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 OPA4317IDR part is unused and in its original packaging.
Return procedure for OPA4317IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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