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Texas Instruments OPA2317IDGKR
- Part No.:
- OPA2317IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2317IDGKR.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,985
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Product details
Overview
OPA2317IDGKR from Texas Instruments is a dual-channel, zero-drift, rail-to-rail input/output operational amplifier optimized for precision low-power applications. It delivers 20 µV typical offset voltage, 300 kHz gain-bandwidth product, and 35 µA maximum quiescent current per amplifier, operating from 1.8 V to 5.5 V supply. It is used in battery-powered instrumentation, temperature sensing front-ends, and high-accuracy current-sense circuits where long-term DC stability is critical.
For engineers reviewing the OPA2317IDGKR datasheet, OPA2317IDGKR pinout, OPA2317IDGKR application, or OPA2317IDGKR equivalent, this page provides verified technical context, package-specific pin definitions, real-world design implications of its zero-drift architecture, and validated alternative options for cost-sensitive, low-voltage precision signal conditioning.
Technical Context
The OPA2317IDGKR employs a proprietary auto-calibration technique that corrects input offset every 8 µs using a time-continuous 125-kHz auxiliary amplifier, eliminating 1/f noise and enabling near-zero drift (0.05 µV/°C) over –40°C to +125°C. Its CMOS input stage delivers ultra-low input bias current (±275 pA typ), while internal EMI/RFI filtering-centered at ~8 MHz-suppresses interference-induced output offset shifts.
This dual op-amp operates unity-gain stable with rail-to-rail input common-mode range (extending 0.1 V beyond rails) and rail-to-rail output swing (within 30 mV of rails at full load). Its class AB output stage drives ≥10 kΩ loads and supports single-supply operation down to 1.8 V, making it suitable for direct battery interfacing without regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - enables direct use with Li-ion, coin-cell, or regulated 3.3 V/5 V rails without external LDO. |
| Offset Voltage (max) | ±90 µV - ensures ≤0.009% error in 1-V full-scale 12-bit ADC front-ends at room temperature. |
| Offset Drift | 0.05 µV/°C - contributes <±0.5 µV total drift over –40°C to +125°C, critical for uncalibrated industrial sensors. |
| Quiescent Current | 35 µA per amplifier - allows dual-channel precision amplification in sub-100-µA system sleep modes. |
| Gain Bandwidth | 300 kHz - supports stable closed-loop gain up to 100× for DC-coupled sensor signals below 3 kHz. |
| CMRR | 108 dB typical - rejects >99.99% of common-mode noise in bridge-based transducer interfaces. |
| Input Voltage Noise | 55 nV/√Hz @ 1 kHz - dominates noise floor in 10–100 kHz bandwidth applications like audio preamps or fast thermocouple conditioning. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, thin-profile surface-mount. Pin 1 identifier marked by beveled corner or dot; thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 kΩ; swings rail-to-rail (within 30 mV) under full load. |
| 2 | –IN A | Inverting input, channel A - high-impedance CMOS node; requires ≤10 mA current limiting if driven beyond rails. |
| 3 | +IN A | Noninverting input, channel A - accepts common-mode voltages from (V–) – 0.1 V to (V+) + 0.1 V. |
| 4 | V– | Negative supply terminal - reference for both amplifiers; must be stable and low-impedance. |
| 5 | +IN B | Noninverting input, channel B - independent of channel A; shares same supply and thermal environment. |
| 6 | –IN B | Inverting input, channel B - matched to channel A for differential pair configurations. |
| 7 | OUT B | Amplifier B output - fully independent; no crosstalk specified; usable for dual-sensor or feedback paths. |
| 8 | V+ | Positive supply terminal - powers both amplifiers; PSRR of 108 dB minimizes supply ripple coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift architecture | Auto-calibrates offset every 8 µs - eliminates thermal drift and aging effects without introducing chopping artifacts or 1/f noise. |
| Rail-to-rail I/O | Input extends 0.1 V beyond rails; output swings within 30 mV - maximizes dynamic range in 1.8 V systems (e.g., 0–1.7 V usable span). |
| Internal EMI/RFI filter | 8 MHz cutoff, 20 dB/decade roll-off - suppresses GSM, Wi-Fi, and switching regulator noise before rectification in input stage. |
| Low quiescent current | 35 µA per amplifier - enables always-on sensor monitoring in battery life–critical devices (e.g., >10-year coin-cell operation). |
| High CMRR & PSRR | 108 dB CMRR / 108 dB PSRR - maintains accuracy in noisy industrial environments with shared ground or unregulated supplies. |
Applications
| Temperature Measurement | Electronic Scale Load Cell Interface |
|---|---|
Use Scenario: Amplifying microvolt-level outputs from RTDs or thermistors in portable medical thermometers or HVAC sensors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset cancellation, driving 16-bit SAR ADC inputs. Use Value: ±90 µV max offset and 0.05 µV/°C drift ensure <±0.1°C measurement error across –20°C to +85°C without calibration. |
Use Scenario: Conditioning Wheatstone bridge outputs from strain-gauge load cells in retail scales or industrial weighing systems. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with matched input pairs and high CMRR. Use Value: 108 dB CMRR rejects bridge excitation noise; rail-to-rail output fully utilizes 3.3 V ADC reference for 24-bit effective resolution. |
| Battery-Powered Data Logger | Medical ECG Front-End |
Use Scenario: Signal conditioning for multi-sensor nodes logging voltage, current, and temperature on AA/AAA batteries. IC Role / Device Role / Timing Role: Dual-channel analog front-end: one amp for sensor gain, second for reference buffering or filtering. Use Value: 35 µA per amplifier enables continuous sampling at 10 SPS with <1 µA total analog subsystem current draw. |
Use Scenario: Low-noise, high-input-impedance amplification of millivolt-level biopotential signals in handheld ECG monitors. IC Role / Device Role / Timing Role: First-stage gain amplifier with guarded inputs and active shielding drive capability. Use Value: 55 nV/√Hz input noise and ±275 pA bias current minimize electrode polarization errors and baseline wander. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81-E/SN | Single-channel only; 25 µV max offset; 500 kHz GBW; 65 µA IQ; SOIC-8 only. | Lacks dual-channel integration; higher power; wider bandwidth suits faster settling but increases noise. | Select when single-channel suffices and higher speed justifies extra current draw and board area. |
| AD8628ARZ-REEL7 | Dual-channel; 10 µV max offset; 2.5 MHz GBW; 1.2 mA IQ; SOIC-8 only; no internal EMI filter. | Lower offset but 34× higher quiescent current; no built-in RF suppression - requires external filtering. | Select for ultra-low-offset DC applications where power budget allows and EMI environment is controlled. |
Compared with OPA2317IDGKR, MCP6V81-E/SN offers higher bandwidth at increased current cost and single-channel limitation, while AD8628ARZ-REEL7 delivers superior offset performance but consumes significantly more power and lacks integrated EMI mitigation - making OPA2317IDGKR optimal for battery-constrained, noise-prone precision sensing.
Availability
OPA2317IDGKR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, and electronic scale load cell interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2317IDGKR 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 cost-sensitive, low-voltage precision applications - combining zero-drift performance, rail-to-rail operation, and ultra-low power in industry-standard packages to replace legacy chopper-stabilized or precision bipolar op-amps.
FAQ
What is the maximum operating temperature range for the OPA2317IDGKR?
The OPA2317IDGKR is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's production testing and supports deployment in automotive engine compartments, industrial motor controls, and outdoor environmental sensors without derating. The device maintains its ±90 µV offset voltage and 300 kHz gain-bandwidth performance across this full range, as confirmed in Section 6.3 and 6.7 of the SBOS682B datasheet.
Does the OPA2317IDGKR require external compensation for unity-gain stability?
No, the OPA2317IDGKR is internally compensated and unity-gain stable across its full operating range (1.8 V to 5.5 V) and temperature range (–40°C to +125°C). No external capacitors or resistors are needed for stable operation at gain = 1. This is explicitly stated in Section 8.1 and confirmed in the "Stability" subsection of Section 9.1 in the SBOS682B datasheet, where step-response plots show clean, non-oscillatory behavior with CL = 0 pF and RL = 10 kΩ.
Can the OPA2317IDGKR drive capacitive loads directly?
The OPA2317IDGKR can reliably drive up to 100 pF capacitive loads without external isolation resistance, as verified in Figure 14 of the SBOS682B datasheet (small-signal overshoot vs. load capacitance). For loads exceeding 100 pF - such as ADC input capacitors or long PCB traces - a series resistor (typically 10–50 Ω) between the amplifier output and the load is recommended to maintain phase margin and prevent peaking or oscillation.
How does the internal EMI filter in the OPA2317IDGKR improve system robustness?
The OPA2317IDGKR integrates a dedicated low-pass input filter with ~8 MHz –3 dB cutoff and 20 dB/decade roll-off, suppressing conducted RF energy (e.g., from GSM bands, switch-mode power supplies, or digital clocks) before it reaches the input transistors. This prevents rectification-induced DC offset shifts - a known failure mode in unfiltered precision amplifiers - and eliminates the need for discrete RC filters in space-constrained designs, as detailed in Section 8.3.5 of SBOS682B.
Is the OPA2317IDGKR pin-compatible with other dual op-amps in VSSOP-8 packaging?
The OPA2317IDGKR uses standard VSSOP-8 pinout (pin 1 = OUT A, pin 2 = –IN A, etc.) defined in TI's mechanical drawing SLMS223. It is pin-compatible with TI's OPA2333, OPA2340, and TLV2462 in the same DGK package - meaning no PCB redesign is required when migrating between these parts, provided layout guidelines (e.g., power supply decoupling, thermal pad grounding) are followed per Section 11 of SBOS682B.
OPA2317IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2317IDGKR FAQ
1.How can I place an order for OPA2317IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2317IDGKR 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 OPA2317IDGKR reliable?
The price and inventory of OPA2317IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2317IDGKR is usually 5 days.
3.What payment methods are accepted for OPA2317IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2317IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2317IDGKR?
OPA2317IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2317IDGKR 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 OPA2317IDGKR?
For technical support, including OPA2317IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2317IDGKR requirements.
6.How does Aetrix verify that OPA2317IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2317IDGKR 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 OPA2317IDGKR meets industry standards.
7.What is the process for return or replacement of OPA2317IDGKR?
All OPA2317IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2317IDGKR, 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 OPA2317IDGKR part is unused and in its original packaging.
Return procedure for OPA2317IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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