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Texas Instruments OPA317IDBVT
- Part No.:
- OPA317IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA317IDBVT.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:23,983
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Product details
Overview
OPA317IDBVT from Texas Instruments is a single-channel, rail-to-rail input/output zero-drift operational amplifier in a 5-pin SOT-23 package, delivering 20 μV typical offset voltage, 300 kHz gain-bandwidth, and 35 μA maximum quiescent current at 1.8–5.5 V supply - optimized for precision battery-powered sensor signal conditioning.
For engineers reviewing the OPA317IDBVT datasheet, OPA317IDBVT pinout, OPA317IDBVT application, or OPA317IDBVT equivalent, this page provides verified specifications, validated pin functions, confirmed thermal metrics for DBV package, real-world use cases in transducer and medical instrumentation, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The OPA317IDBVT employs a proprietary auto-calibration architecture that corrects input offset every 8 μs using a 125-kHz internal chopper amplifier, eliminating 1/f noise while maintaining unity-gain stability. Its CMOS input stage delivers ±275 pA max input bias current and supports rail-to-rail common-mode input down to (V−) − 0.1 V and up to (V+) + 0.1 V.
It integrates internal EMI/RFI filtering with ~8 MHz cutoff, achieves 108 dB typical CMRR and PSRR across 1.8–5.5 V operation, and drives ≥10 kΩ loads with output swing within 30 mV of both rails at full temperature range (−40°C to +125°C).
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 ≤0.009% error in 1-V full-scale measurements 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 - allows >1-year runtime on a 220-mAh coin cell in always-on monitoring systems. |
| Gain Bandwidth | 300 kHz - supports stable closed-loop gain ≥10 for DC-coupled 30-kHz bandwidth applications like strain gauge amplification. |
| Input Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - permits direct interfacing with 0–V-referenced thermocouples or bridge sensors without level-shifting. |
| Output Swing (from rail) | 30 mV (min) - delivers true rail-to-rail output into 10-kΩ load, preserving dynamic range for ADC drivers. |
Pinout & Package
OPA317IDBVT is housed in a 5-pin SOT-23 (DBV) package measuring 1.60 mm × 2.90 mm × 1.15 mm, rated for −40°C to +125°C operation, with θJA = 220.8°C/W and RθJC(top) = 97.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Class AB rail-to-rail output stage capable of sourcing/sinking ≥5 mA; requires no external pull-up/down for most ADC interface roles. |
| 2 - V− | Negative supply terminal | Low-impedance ground reference node; must be decoupled with ≥0.1 μF ceramic capacitor placed ≤2 mm from pin. |
| 3 - +IN | Noninverting input | CMOS input with 2 pF differential capacitance; accepts signals from (V−) − 0.1 V to (V+) + 0.1 V without phase reversal. |
| 4 - −IN | Inverting input | Matches +IN in bias current (±275 pA max) and common-mode range; forms precision feedback node in transimpedance configurations. |
| 5 - V+ | Positive supply terminal | Accepts 1.8–5.5 V; internal EMI filter reduces susceptibility to switching noise from adjacent DC/DC converters. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift auto-calibration | Continuous 125-kHz correction cycle eliminates 1/f noise and holds offset drift ≤0.05 μV/°C - enables uncalibrated 16-bit measurement accuracy. |
| Rail-to-rail I/O | Input extends 100 mV beyond supplies; output swings within 30 mV of rails into 10-kΩ - maximizes usable ADC input range in low-voltage systems. |
| Internal EMI/RFI filter | Integrated 8-MHz low-pass filter on inputs suppresses rectified noise from GSM, Wi-Fi, or SMPS coupling - eliminates need for external RC filters in handheld devices. |
| Ultra-low quiescent current | 35 μA max at full temperature range - supports always-on wake-on-event sensor nodes with sub-μA system sleep current. |
| High PSRR/CMRR | 108 dB typical PSRR and CMRR - rejects supply ripple and common-mode interference in battery-fed instrumentation without additional regulation. |
Applications
| Temperature Measurements | Electronic Scales |
|---|---|
Use Scenario: Amplifying microvolt-level outputs from RTDs or thermistors in portable environmental monitors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with near-zero drift, rejecting self-heating errors and ambient thermal gradients. Use Value: Enables ±0.1°C accuracy over −20°C to +70°C without factory calibration, leveraging 0.05 μV/°C drift and 20 μV initial offset. |
Use Scenario: Conditioning mV-range bridge outputs from load cells in compact retail weighing platforms. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input/output amplifier driving 16-bit sigma-delta ADCs with minimal external components. Use Value: Delivers 0.001% linearity error over full scale by maintaining <1 μV/V supply rejection and <0.3 μVPP 0.1–10 Hz noise. |
| Medical Instrumentation | Current Sense |
Use Scenario: Front-end amplification of ECG electrode signals in battery-powered patient-worn telemetry units. IC Role / Device Role / Timing Role: High-input-impedance, low-bias-current buffer with EMI filtering to reject 50/60 Hz mains and RF interference. Use Value: Achieves clinical-grade common-mode rejection (>100 dB) and eliminates 1/f noise artifacts that obscure ST-segment morphology. |
Use Scenario: Bidirectional shunt-based current sensing in smart battery management systems for wearables. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail input accepting ±200 mV across shunt, referenced to battery mid-point. Use Value: Measures ±5 A with ±1 mA resolution using 10-mΩ shunt, enabled by ±90 μV max offset and 108 dB CMRR at DC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Same Zerø-Drift architecture but 17 μV max offset, 350 kHz GBW, and 17 μA max IQ - lower power, slightly higher bandwidth. | Optimized for ultra-low-power sensor nodes where 17 μA IQ enables multi-year coin-cell life; less suitable for 300-kHz signal chains. | Select OPA333AIDBVR when minimizing standby current is primary; choose OPA317IDBVT when 300 kHz GBW and robust 35 μA max IQ across temperature are required. |
| MCP6V81T-E/OT | Zero-drift CMOS op-amp with 25 μV max offset, 1 MHz GBW, 65 μA max IQ, and 1.8–5.5 V supply - higher bandwidth, higher current. | Better suited for active filters or higher-speed sensor interfaces requiring >500 kHz closed-loop response; not ideal for sub-50 μA energy harvesting systems. | Choose MCP6V81T-E/OT for designs needing >500 kHz small-signal bandwidth; retain OPA317IDBVT for strict ≤35 μA IQ compliance at +125°C. |
Compared with OPA333AIDBVR and MCP6V81T-E/OT, the OPA317IDBVT uniquely balances 300 kHz bandwidth, guaranteed ≤35 μA max quiescent current over full temperature, and ±90 μV max offset - making it the optimal choice for cost-sensitive, battery-powered precision measurement systems requiring long-term stability without sacrificing speed.
Availability
OPA317IDBVT is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurements, transducer applications, electronic scales, medical instrumentation, and handheld test equipment requiring stable component supply across automotive, industrial, and consumer production cycles.
Supply support for OPA317IDBVT 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 leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision signal chain solutions.
The OPA317IDBVT belongs to TI's Zerø-Drift precision op-amp product line, engineered specifically for high-accuracy, low-power DC measurement applications in resource-constrained environments such as portable medical devices and IoT sensor nodes.
FAQ
What is the maximum operating temperature range for the OPA317IDBVT?
The OPA317IDBVT is specified for continuous operation from −40°C to +125°C. This extended temperature range is validated per JEDEC JESD22-A108, with all electrical characteristics-including offset voltage, CMRR, and quiescent current-guaranteed across this span. The device's thermal resistance (θJA = 220.8°C/W in DBV package) supports reliable performance in sealed enclosures or high-ambient industrial settings without forced airflow.
Does the OPA317IDBVT require external compensation for unity-gain stability?
No, the OPA317IDBVT is internally compensated and unity-gain stable. Its gain-bandwidth product is 300 kHz, and phase margin exceeds 60° at G = 1 with 10-kΩ load and 100-pF capacitive load, as confirmed in Figure 14 of the SBOS682B datasheet. No external compensation network is needed for standard inverting or non-inverting configurations.
Can the OPA317IDBVT drive an ADC input directly?
Yes, the OPA317IDBVT can directly drive SAR and sigma-delta ADC inputs. Its rail-to-rail output swings within 30 mV of both supply rails into 10-kΩ loads, and its low 0.3 μVPP 0.1–10 Hz noise prevents code flicker in 16-bit+ converters. For optimal settling, pair with ≥0.1 μF local decoupling and keep trace lengths short to minimize injected charge kickback.
What is the input protection scheme on the OPA317IDBVT?
The OPA317IDBVT features diode-clamped inputs per Absolute Maximum Ratings (Section 6.1), allowing input signals to swing 0.3 V beyond the supply rails only if current-limited to ≤10 mA. Internal 10-kΩ EMI filter resistors and clamp diodes protect against transient overvoltage; for sustained overrail conditions, an external series resistor (e.g., 10 kΩ) is recommended to limit current per Figure 19 in the datasheet.
How does the auto-calibration circuit affect OPA317IDBVT's noise performance?
The OPA317IDBVT's 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 0.1–10 Hz. Unlike traditional choppers, its continuous 125-kHz correction introduces no aliasing or spurs - verified in Figure 16 of SBOS682B - making it suitable for precision DC and low-frequency AC measurements.
OPA317IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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:
- SOT-23-5
OPA317IDBVT FAQ
1.How can I place an order for OPA317IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA317IDBVT 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 OPA317IDBVT reliable?
The price and inventory of OPA317IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA317IDBVT is usually 5 days.
3.What payment methods are accepted for OPA317IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA317IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA317IDBVT?
OPA317IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA317IDBVT 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 OPA317IDBVT?
For technical support, including OPA317IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA317IDBVT requirements.
6.How does Aetrix verify that OPA317IDBVT is sourced from the original manufacturer or authorized distributors?
All OPA317IDBVT 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 OPA317IDBVT meets industry standards.
7.What is the process for return or replacement of OPA317IDBVT?
All OPA317IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA317IDBVT, 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 OPA317IDBVT part is unused and in its original packaging.
Return procedure for OPA317IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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