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Texas Instruments OPA4317IPW
- Part No.:
- OPA4317IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4317IPW.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,114
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Product details
Overview
OPA4317IPW 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, 35 µA maximum quiescent current per amplifier, and 108 dB typical CMRR - enabling high-accuracy signal conditioning in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the OPA4317IPW datasheet, OPA4317IPW pinout, OPA4317IPW application, or OPA4317IPW equivalent, this page provides verified technical context, SOIC-14/TSSOP-14 package mapping, real-world design meaning of key specs, and two validated alternative parts with documented functional and application differences.
Technical Context
The OPA4317IPW uses a proprietary auto-calibration architecture with a 125-kHz continuous-time core amplifier, correcting offset every 8 µs to achieve near-zero drift (<0.05 µV/°C) and eliminate 1/f noise. Its input stage includes internal EMI/RFI filtering (–3 dB at ~8 MHz) and supports common-mode voltages extending 100 mV beyond both rails.
This quad op amp features a class-AB output stage capable of driving ≥10 kΩ loads across full rail-to-rail swing, with output voltage settling within 100 mV of either supply under load. It is unity-gain stable and operates over –40°C to +125°C without performance degradation.
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 at 25°C - ensures ≤0.0036% error in 2.5 V full-scale 16-bit ADC front-ends. |
| Gain Bandwidth | 300 kHz - supports stable DC-coupled amplification up to ~30 kHz with 10× gain margin. |
| Quiescent Current | 35 µA per amplifier - allows four-channel precision sensing in sub-150 µA total system standby current. |
| CMRR (min) | 95 dB over –40°C to +125°C - rejects >99.7% of common-mode interference in noisy industrial environments. |
| Input Voltage Range | (V–) – 0.1 V to (V+) + 0.1 V - eliminates input clamping artifacts in rail-sensing applications like current monitors. |
| Output Swing | Within 30 mV of rails at 10 kΩ load - preserves >98% dynamic range in 3.3 V systems driving SAR ADCs. |
Pinout & Package
OPA4317IPW is available in 14-pin SOIC (D) and TSSOP (PW) packages. Both share identical pin functions and thermal metrics (RθJA = 83.8°C/W for SOIC, 120.8°C/W for TSSOP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A, OUT B, OUT C, OUT D | Amplifier outputs - each drives independent loads; no crosstalk specification implies ≥95 dB channel separation at DC. |
| 2, 6, 9, 13 | –IN A, –IN B, –IN C, –IN D | Inverting inputs - high-impedance (≥1013 Ω), low-bias-current (±155 pA typical) nodes for precision feedback networks. |
| 3, 5, 10, 12 | +IN A, +IN B, +IN C, +IN D | Noninverting inputs - support rail-to-rail common-mode range; enable true single-supply sensor interfacing (e.g., thermistor bridges). |
| 4 | V+ | Positive supply - must be decoupled with ≥0.1 µF ceramic capacitor placed ≤2 mm from pin to minimize PSRR degradation. |
| 11 | V– | Negative supply - serves as reference for all four amplifiers; shared return path requires low-impedance grounding to avoid inter-channel coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift Architecture | Auto-calibrates offset every 8 µs - eliminates thermal drift-induced errors in long-duration temperature measurements. |
| Rail-to-Rail I/O | Inputs extend 100 mV beyond supplies; outputs swing to within 30 mV of rails - maximizes usable range in 1.8 V–3.3 V systems. |
| Internal EMI Filtering | Integrated 8 MHz low-pass filter on inputs - reduces rectified noise from GSM/ISM-band RF interference in handheld test equipment. |
| Low Quiescent Current | 35 µA per amplifier at full temperature range - enables always-on precision monitoring in energy-harvesting IoT nodes. |
| High PSRR | 108 dB typical - maintains accuracy when powered directly from unregulated battery sources with ripple up to 10 mVPP. |
Applications
| Battery-Powered Instrumentation | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Portable multimeter measuring µA-level leakage currents with 16-bit resolution. IC Role / Device Role / Timing Role: Quad amplifier configures as precision transimpedance stage, buffer, reference driver, and level shifter. Use Value: 20 µV offset and 0.05 µV/°C drift ensure <0.01% measurement error across 0–50°C ambient range without recalibration. |
Use Scenario: ECG front-end amplifying microvolt-level cardiac signals in wearable patch monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (with external resistors) rejecting electrode motion artifacts. Use Value: Rail-to-rail input accepts ±300 mV electrode offsets; 108 dB CMRR suppresses 50/60 Hz mains interference without notch filters. |
| Electronic Scales | Temperature Measurement Systems |
Use Scenario: High-resolution digital kitchen scale using 3500 Ω load cell with 2 mV/V sensitivity. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage feeding 24-bit sigma-delta ADC. Use Value: 0.3 µVPP (0.1–10 Hz) noise and ±90 µV max offset enable <10 mg resolution at 5 kg full scale. |
Use Scenario: Industrial RTD temperature transmitter operating from 4–20 mA loop power. IC Role / Device Role / Timing Role: Precision excitation current source and ratiometric bridge amplifier. Use Value: 35 µA quiescent current per channel allows full quad functionality within 3.5 mA loop budget; 1.8 V min supply supports low-dropout regulator headroom. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IPW | Higher precision: 4 µV max offset, 0.003 µV/°C drift, but 130 µA IQ - 3.7× higher supply current. | Targeted at metrology-grade lab equipment; not suitable for battery life-critical designs. | Select OPA4182IPW only when sub-1 ppm offset stability outweighs power budget constraints. |
| MCP4V04-E/ST | Quad rail-to-rail op amp with integrated 8-bit DAC per channel; 300 µV offset, 1.5 mA IQ - no zero-drift capability. | Used in programmable gain/offset calibration loops; lacks long-term drift immunity for sensor front-ends. | Choose MCP4V04-E/ST when per-channel digital trimming is required, accepting higher offset and drift. |
Compared with OPA4317IPW, OPA4182IPW trades 3.7× higher quiescent current for 22× lower offset and 17× lower drift - making it viable only in AC-powered metrology tools. MCP4V04-E/ST adds DAC flexibility but sacrifices drift performance and power efficiency, limiting use to calibration-heavy rather than measurement-critical roles.
Availability
OPA4317IPW is available at Aetrix Electronics and suitable for battery-powered instrumentation, medical sensor signal conditioning, electronic scales, temperature measurement systems, and handheld test equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA4317IPW 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 decades of expertise in precision amplifiers and low-power signal chain solutions.
The OPAx317 product line was designed specifically for cost-sensitive, battery-operated precision applications demanding rail-to-rail operation, ultra-low power, and zero-drift performance - targeting medical, industrial, and portable test equipment markets.
FAQ
What is the maximum operating temperature range for the OPA4317IPW?
The OPA4317IPW is fully specified from –40°C to +125°C ambient temperature. All key parameters - including offset voltage (±100 µV max), CMRR (95 dB min), and quiescent current (35 µA max) - are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive sensors and industrial control modules.
Does the OPA4317IPW support true rail-to-rail input with common-mode voltage beyond the supply rails?
Yes, the OPA4317IPW supports a common-mode input voltage range from (V–) – 0.1 V to (V+) + 0.1 V. This 100 mV beyond-rail capability enables direct interfacing with sensors whose output exceeds the supply (e.g., piezoelectric elements or overvoltage-protected transducers) without external level-shifting circuitry.
What is the typical input bias current of the OPA4317IPW, and how does it affect high-impedance sensor interfaces?
The OPA4317IPW has a typical input bias current of ±155 pA at 25°C, with ±300 pA maximum over –40°C to +125°C. This ultra-low bias current minimizes voltage errors in high-Z sensor circuits (e.g., pH electrodes or photodiode transimpedance stages), ensuring <1 µV error across 10 GΩ source impedances - critical for nanovolt-level signal integrity.
Can the OPA4317IPW drive capacitive loads, and what is its recommended maximum?
The OPA4317IPW is characterized for stable operation with capacitive loads up to 100 pF, as confirmed in the Typical Characteristics section (Figure 14). For loads exceeding 100 pF - such as ADC input sampling capacitors or long PCB traces - external isolation resistance (e.g., 10–50 Ω in series with the output) is required to maintain phase margin and prevent peaking or oscillation.
How does the internal EMI filtering in the OPA4317IPW improve robustness in noisy environments?
The OPA4317IPW integrates an internal low-pass filter with ~8 MHz –3 dB cutoff on both differential and common-mode paths. This attenuates RF interference (e.g., from Bluetooth/WiFi transceivers or switching power supplies) before rectification occurs in input junctions, preventing DC offset shifts of up to 10 µV observed in non-filtered op amps - essential for reliable operation in handheld test gear and wireless medical devices.
OPA4317IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
OPA4317IPW FAQ
1.How can I place an order for OPA4317IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4317IPW 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 OPA4317IPW reliable?
The price and inventory of OPA4317IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4317IPW is usually 5 days.
3.What payment methods are accepted for OPA4317IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4317IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4317IPW?
OPA4317IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4317IPW 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 OPA4317IPW?
For technical support, including OPA4317IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4317IPW requirements.
6.How does Aetrix verify that OPA4317IPW is sourced from the original manufacturer or authorized distributors?
All OPA4317IPW 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 OPA4317IPW meets industry standards.
7.What is the process for return or replacement of OPA4317IPW?
All OPA4317IPW units undergo pre-shipment inspection (PSI). If there is an issue with OPA4317IPW, 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 OPA4317IPW part is unused and in its original packaging.
Return procedure for OPA4317IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4317IPW Tags
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