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Texas Instruments OPA2317IDGKT
- Part No.:
- OPA2317IDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2317IDGKT.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,660
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Product details
Overview
OPA2317IDGKT from Texas Instruments is a dual, 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, 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 OPA2317IDGKT datasheet, OPA2317IDGKT pinout, OPA2317IDGKT application, or OPA2317IDGKT 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.
Technical Context
The OPA2317IDGKT 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 CMOS input stage delivers ±275 pA typical bias current and 108 dB typical CMRR.
This dual-channel device uses internal EMI/RFI filtering with ~8 MHz cutoff and supports unity-gain stability into ≥10 kΩ loads. The VSSOP-8 package enables compact layout while preserving thermal performance (RθJA = 180.3°C/W) and rail-to-rail swing within 30 mV of both supply rails under full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - enables direct battery operation without regulation, e.g., single-cell Li-ion or two-AA systems. |
| Offset Voltage (max) | ±90 µV at 25°C - ensures ≤0.009% error in 1-V full-scale measurements without trimming. |
| Drift vs Temperature | 0.05 µV/°C - contributes <±6 µV total drift across –40°C to +125°C, critical for unattended industrial sensors. |
| Quiescent Current | 35 µA per amplifier - allows dual-channel precision amplification in sub-100-µA system budgets. |
| Gain-Bandwidth | 300 kHz - supports stable DC-coupled gain up to 300× at 1 kHz or sensor signal conditioning up to 10 kHz with 10× gain. |
| Input Common-Mode Range | (V–) – 0.1 V to (V+) + 0.1 V - permits direct interfacing to transducers biased beyond rails, e.g., bridge sensors with excitation offsets. |
| Output Swing (min) | 30 mV from rail - delivers >97% dynamic range in 3.3-V systems driving SAR ADCs with 0–3.3 V input range. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 kΩ; swings rail-to-rail with ≤30 mV headroom. |
| 2 | –IN A | Inverting input, channel A - high-impedance CMOS node; accepts common-mode voltages 0.1 V beyond rails. |
| 3 | +IN A | Noninverting input, channel A - matched to –IN A; used for differential sensing or unity-gain buffer configurations. |
| 4 | V– | Negative supply - reference for both amplifiers; must be stable and low-noise for precision DC performance. |
| 5 | +IN B | Noninverting input, channel B - independent of channel A; enables dual-sensor readout or signal splitting. |
| 6 | –IN B | Inverting input, channel B - electrically isolated from channel A; supports separate feedback networks. |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; usable for cascaded gain stages or redundant monitoring. |
| 8 | V+ | Positive supply - powers both amplifiers; PSRR of 108 dB minimizes ripple coupling into output. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift Architecture | Auto-calibrates offset every 8 µs - eliminates long-term drift and 1/f noise, enabling stable µV-level DC measurements over years. |
| Rail-to-Rail I/O | Input extends 100 mV beyond supplies; output swings within 30 mV - maximizes usable range in 1.8–3.3 V systems. |
| Internal EMI Filtering | 8 MHz low-pass filter on inputs - suppresses RF interference from GSM, Wi-Fi, or switching regulators without external components. |
| Low Quiescent Current | 35 µA per amplifier - allows dual-channel precision amplification in always-on battery nodes with multi-year life. |
| High CMRR | 108 dB typical - rejects common-mode noise from shared ground paths or noisy power domains in mixed-signal PCBs. |
Applications
| Temperature Measurements | Electronic Scales |
|---|---|
Use Scenario: Amplifying microvolt-level signals from platinum RTDs or thermocouples in handheld calibrators. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low offset and drift to resolve <0.1°C changes. Use Value: ±90 µV max offset ensures <±0.25°C absolute error at 100°C with PT100, eliminating need for factory calibration. |
Use Scenario: Conditioning mV-range outputs from load cell bridges in portable weighing devices. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for bridge excitation regulation, one for differential output amplification. Use Value: 0.05 µV/°C drift prevents thermal zero-shift errors during ambient temperature fluctuations in field use. |
| Medical Instrumentation | Battery-Powered Instruments |
Use Scenario: Biopotential signal acquisition (ECG, EMG) in wearable monitors with dry electrodes. IC Role / Device Role / Timing Role: First-stage amplifier with rail-to-rail input to handle electrode offset voltages up to ±300 mV. Use Value: Input common-mode range extending 0.1 V beyond rails avoids clipping during electrode contact transients. |
Use Scenario: Signal conditioning in handheld multimeters or portable gas detectors operating from coin cells. IC Role / Device Role / Timing Role: Dual low-power op-amp: one for sensor interface, one for reference buffering or comparator hysteresis. Use Value: 35 µA per amplifier enables full-featured operation for >5 years on CR2032, meeting IEC 62366 usability requirements. |
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, 25 µV max offset, 400 kHz GBW, 65 µA IQ - higher bandwidth and current than OPA2317IDGKT. | Preferred where single-channel operation suffices and faster settling is required, e.g., multiplexed sensor arrays. | Select MCP6V81-E/SN when needing >300 kHz bandwidth with comparable offset; verify VSSOP-8 footprint compatibility. |
| AD8532ARZ-REEL7 | Dual-channel, 1.5 mV max offset, 3 MHz GBW, 450 µA IQ - significantly higher offset and quiescent current than OPA2317IDGKT. | Suitable for cost-sensitive industrial controls where µV-level precision is unnecessary but higher drive capability is needed. | Choose AD8532ARZ-REEL7 only if system tolerates >15× higher offset and can accommodate 13× higher supply current. |
Compared with MCP6V81-E/SN and AD8532ARZ-REEL7, the OPA2317IDGKT uniquely balances ultra-low offset (±90 µV), near-zero drift (0.05 µV/°C), and ultra-low power (35 µA) in a dual-channel VSSOP-8 package - making it optimal for battery-constrained precision measurement where both channels must meet tight DC specs.
Availability
OPA2317IDGKT is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurements, and electronic scales requiring stable component supply across extended product lifecycles.
Supply support for OPA2317IDGKT 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 OPA2317IDGKT belongs to TI's Zerø-Drift Precision Amplifier product line, designed specifically for high-accuracy, low-power DC signal conditioning in space- and energy-constrained applications such as portable medical devices and IoT sensor nodes.
FAQ
What is the maximum allowable supply voltage for OPA2317IDGKT?
The OPA2317IDGKT has an absolute maximum supply voltage (V+ to V–) of 7 V, but its recommended operating range is strictly 1.8 V to 5.5 V. Exceeding 7 V risks permanent damage per TI's SBOS682B datasheet Absolute Maximum Ratings table. For reliable long-term operation, maintain VS within 1.8–5.5 V - e.g., 3.3 V or 5 V nominal rails with ≤10% tolerance.
Does OPA2317IDGKT support rail-to-rail output swing across its full temperature range?
Yes, the OPA2317IDGKT maintains rail-to-rail output swing from –40°C to +125°C, with output voltage guaranteed to swing within 30 mV of both V+ and V– under all conditions per Electrical Characteristics table. This is confirmed in Section 6.7 of SBOS682B, where "Voltage output swing from rail" is specified as 30 mV min at TA = –40°C to +125°C.
What is the input bias current specification for OPA2317IDGKT?
The OPA2317IDGKT specifies ±275 pA typical input bias current at 25°C, with ±300 pA maximum across –40°C to +125°C per Section 6.7 of SBOS682B. This ultra-low bias enables high-impedance sensor interfaces (e.g., pH electrodes or piezoresistive bridges) without significant voltage drop across source impedances up to 100 MΩ.
Can OPA2317IDGKT drive capacitive loads, and what is the limit?
The OPA2317IDGKT is unity-gain stable and characterized to drive capacitive loads up to 100 pF without oscillation, as shown in Figure 14 (Small-Signal Overshoot vs Load Capacitance) of SBOS682B. For loads >100 pF, external isolation resistance (e.g., 10–100 Ω in series with output) is recommended to maintain phase margin and prevent peaking.
Is OPA2317IDGKT pin-compatible with other dual op-amps in VSSOP-8 packages?
No - the OPA2317IDGKT uses a nonstandard VSSOP-8 pinout: pins 1/7 are outputs, pins 2/6 are inverting inputs, pins 3/5 are noninverting inputs, and pins 4/8 are supplies. This differs from industry-standard dual op-amps like LMV358 or TLV2372, which place supplies on pins 4/8 but assign inputs/outputs differently. Direct replacement requires PCB redesign.
OPA2317IDGKT 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
OPA2317IDGKT FAQ
1.How can I place an order for OPA2317IDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2317IDGKT 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 OPA2317IDGKT reliable?
The price and inventory of OPA2317IDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2317IDGKT is usually 5 days.
3.What payment methods are accepted for OPA2317IDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2317IDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2317IDGKT?
OPA2317IDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2317IDGKT 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 OPA2317IDGKT?
For technical support, including OPA2317IDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2317IDGKT requirements.
6.How does Aetrix verify that OPA2317IDGKT is sourced from the original manufacturer or authorized distributors?
All OPA2317IDGKT 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 OPA2317IDGKT meets industry standards.
7.What is the process for return or replacement of OPA2317IDGKT?
All OPA2317IDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2317IDGKT, 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 OPA2317IDGKT part is unused and in its original packaging.
Return procedure for OPA2317IDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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