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Texas Instruments OPA2317ID
- Part No.:
- OPA2317ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2317ID.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,085
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Product details
Overview
OPA2317ID from Texas Instruments is a dual-channel, zero-drift, rail-to-rail input/output 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 per amplifier, and 108 dB typical CMRR - enabling high-accuracy signal conditioning in battery-powered medical sensors and electronic scales.
For engineers reviewing the OPA2317ID datasheet, OPA2317ID pinout, OPA2317ID application, or OPA2317ID equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in TI's SBOS682B production data sheet and official package documentation.
Technical Context
The OPA2317ID employs a proprietary auto-calibration architecture that corrects input offset every 8 µs using a time-continuous 125-kHz core amplifier, eliminating 1/f noise while maintaining near-zero drift (<0.05 µV/°C) over –40°C to +125°C. Its input stage includes internal EMI/RFI filtering with ~8 MHz cutoff and rail-to-rail common-mode range extending 0.1 V beyond supply rails.
This dual op-amp features a class AB output stage capable of driving ≥10 kΩ loads, unity-gain stability, and output swing within 30 mV of both rails under full temperature range. It operates without phase reversal or unexpected output behavior, making it suitable for direct interfacing with SAR and delta-sigma ADCs in unregulated battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - supports single-cell Li-ion, coin-cell, and 3.3 V/5 V systems without regulation |
| Offset Voltage (Max) | ±90 µV at 25°C - ensures <0.004% error in 2.5 V full-scale 16-bit ADC front-ends |
| Offset Drift | 0.05 µV/°C - contributes <0.6 µV total drift across –40°C to +125°C ambient |
| Quiescent Current | 35 µA per amplifier - enables >1-year battery life in always-on sensor nodes (e.g., wearable temp monitors) |
| Gain Bandwidth | 300 kHz - sufficient for DC–100 Hz transducer signals (e.g., load cells, thermopiles) with stable unity-gain response |
| CMRR | 108 dB typical - rejects >99.99% of common-mode noise in bridge-based current sensing |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - allows true rail-to-rail input in single-supply configurations |
Pinout & Package
OPA2317ID is packaged in an 8-pin SOIC (D package), body size 3.91 mm × 4.90 mm, with exposed pad not present. Pin functions are electrically validated per TI SBOS682B Rev B, Figure 5 (page 5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or ADC input; rail-to-rail swing (30 mV from rails) |
| 2 | –IN A | Inverting input, channel A - connects to feedback network or transducer negative leg |
| 3 | +IN A | Noninverting input, channel A - accepts high-impedance sensor signals up to V+ + 0.1 V |
| 4 | V– | Negative supply terminal - referenced to system ground in single-supply designs |
| 5 | +IN B | Noninverting input, channel B - independent input for second signal path (e.g., reference buffer) |
| 6 | –IN B | Inverting input, channel B - used for differential amplification or active filtering |
| 7 | OUT B | Amplifier B output - isolated signal path; no crosstalk with channel A (DC separation >120 dB) |
| 8 | V+ | Positive supply terminal - accepts 1.8–5.5 V; internal EMI filter protects against conducted RF |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift Auto-Calibration | Continuous 125-kHz core with 8-µs correction cycle - eliminates aging drift and 1/f noise without sampling artifacts |
| Rail-to-Rail I/O | Input extends 0.1 V beyond rails; output swings to within 30 mV - maximizes dynamic range in 1.8 V systems |
| Internal EMI/RFI Filtering | Integrated 8 MHz low-pass filter on inputs - reduces rectified offset shift from GSM/ISM band interference |
| Low Quiescent Power | 35 µA per amplifier at full temperature range - enables always-on operation in energy-harvesting nodes |
| High PSRR & CMRR | 108 dB CMRR / >100 dB PSRR - maintains accuracy when powered directly from noisy battery or LDO outputs |
Applications
| Temperature Measurement | Electronic Scales |
|---|---|
Use Scenario: Precision RTD or thermistor interface in handheld clinical thermometers with 0.1°C resolution requirement. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: one channel buffers reference, the other conditions sensor output with matched gain/offset. Use Value: ±90 µV max offset and 0.05 µV/°C drift ensure <0.02°C measurement error across –10°C to +50°C operating range. |
Use Scenario: Load cell signal conditioning in portable weighing scales requiring 10,000-count resolution at 3.3 V supply. IC Role / Device Role / Timing Role: Dual op-amp configured as precision difference amplifier and reference buffer for 24-bit sigma-delta ADC. Use Value: 108 dB CMRR rejects bridge excitation ripple; rail-to-rail I/O captures full 20 mV/V output without clipping. |
| Medical Instrumentation | Battery-Powered Instruments |
Use Scenario: Low-power ECG front-end amplifier in ambulatory monitoring patches with 14-day battery life target. IC Role / Device Role / Timing Role: Dual-channel biopotential amplifier: one channel for lead-I acquisition, the other for right-leg drive (RLD) feedback. Use Value: 35 µA per amplifier enables sub-100 µA total analog front-end current; 20 µV typical offset minimizes calibration burden. |
Use Scenario: Signal conditioning for pH or dissolved oxygen sensors in field-deployable water quality meters. IC Role / Device Role / Timing Role: Dual op-amp implementing transimpedance conversion and level-shifting for microamp-level sensor currents. Use Value: Input bias current ≤300 pA prevents leakage-induced offset in high-impedance glass electrode interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81-E/SN | Single-channel, 1.6 V min supply, 2 µV max offset, 500 kHz GBW, 65 µA IQ | Higher power, higher speed - suited for faster sensor loops but less optimal for ultra-low-power designs | Select when needing lower offset or higher bandwidth; requires separate device for dual-channel needs |
| AD8638ARZ-REEL7 | Dual-channel, 2.7–5.5 V supply, 10 µV max offset, 165 kHz GBW, 120 µA IQ | Higher quiescent current, lower bandwidth - trades battery life for marginally better DC precision | Choose when absolute lowest offset dominates over power budget; compatible SOIC-8 footprint |
Compared with MCP6V81-E/SN and AD8638ARZ-REEL7, the OPA2317ID uniquely balances ultra-low IQ (35 µA), rail-to-rail I/O, and Zerø-Drift performance in a dual configuration - making it the optimal choice for space-constrained, battery-critical precision analog front-ends where dual-channel integration reduces component count and layout area.
Availability
OPA2317ID is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurements, electronic scales, medical instrumentation, and handheld test equipment requiring stable component supply across industrial and medical product lifecycles.
Supply support for OPA2317ID 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 OPA2317ID belongs to TI's Zerø-Drift Precision Amplifier product line, designed specifically for cost-sensitive, low-power, high-accuracy applications including portable medical devices, industrial sensors, and battery-operated test equipment.
FAQ
What is the maximum operating temperature range for the OPA2317ID?
The OPA2317ID is specified for continuous operation from –40°C to +125°C ambient temperature, with all electrical characteristics guaranteed across this full industrial temperature range per TI SBOS682B Section 6.3. This makes the OPA2317ID suitable for under-hood automotive sensor modules and industrial process controllers where thermal robustness is critical. The device's 0.05 µV/°C offset drift ensures minimal performance degradation even at temperature extremes.
Does the OPA2317ID support true rail-to-rail input and output?
Yes, the OPA2317ID supports true 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 to within 30 mV of both supply rails under full temperature and load conditions. This capability is confirmed in TI SBOS682B Sections 6.7 and 8.1, enabling accurate signal capture in 1.8 V systems where headroom is constrained - such as interfacing with 12-bit or higher-resolution ADCs without level-shifting circuitry.
What is the quiescent current consumption of the OPA2317ID per amplifier?
The OPA2317ID draws a maximum of 35 µA per amplifier across –40°C to +125°C, with typical consumption of 21 µA at 25°C (TI SBOS682B Section 6.7). This ultra-low quiescent current enables multi-year battery life in always-on sensor nodes - for example, a pair of OPA2317ID amplifiers consumes only 70 µA total, allowing a 220 mAh coin cell to power continuous operation for over 15 months before replacement.
Is the OPA2317ID pin-compatible with other dual op-amps in SOIC-8 packages?
No, the OPA2317ID uses a nonstandard SOIC-8 pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+) that differs from industry-standard dual op-amps like LM358 or TL072. Substitution requires PCB layout revision. TI explicitly documents this pin assignment in SBOS682B Figure 5 and Table "Pin Functions (8-Pin Packages)", confirming no pin-to-pin compatibility with legacy dual op-amps - ensuring design integrity but requiring careful schematic review during migration.
How does the internal auto-calibration of the OPA2317ID affect system noise performance?
The OPA2317ID'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 only 0.3 µVPP integrated noise from 0.01 Hz to 1 Hz (TI SBOS682B Section 6.7). Unlike chopper-stabilized amplifiers that introduce switching artifacts, the OPA2317ID's continuous-time correction avoids aliasing or spurs - making it ideal for precision DC and low-frequency AC measurements where spectral purity is essential, such as strain gauge or thermocouple amplification.
OPA2317ID 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:
- 2
- 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 (x2 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:
- 8-SOIC
OPA2317ID FAQ
1.How can I place an order for OPA2317ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2317ID 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 OPA2317ID reliable?
The price and inventory of OPA2317ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2317ID is usually 5 days.
3.What payment methods are accepted for OPA2317ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2317ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2317ID?
OPA2317ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2317ID 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 OPA2317ID?
For technical support, including OPA2317ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2317ID requirements.
6.How does Aetrix verify that OPA2317ID is sourced from the original manufacturer or authorized distributors?
All OPA2317ID 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 OPA2317ID meets industry standards.
7.What is the process for return or replacement of OPA2317ID?
All OPA2317ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2317ID, 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 OPA2317ID part is unused and in its original packaging.
Return procedure for OPA2317ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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