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Texas Instruments OPA2317IDR
- Part No.:
- OPA2317IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2317IDR.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:364
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Product details
Overview
OPA2317IDR 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 product, 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 OPA2317IDR datasheet, OPA2317IDR pinout, OPA2317IDR application, or OPA2317IDR equivalent, this page provides verified package mapping (VSSOP-8), confirmed dual-amplifier topology, validated rail-to-rail I/O behavior, and two rigorously cross-checked alternative parts with documented functional trade-offs.
Technical Context
The OPA2317IDR 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) across –40°C to +125°C. Its CMOS input stage achieves ±275 pA typical bias current and 108 dB typical CMRR.
This dual op-amp integrates internal EMI/RFI filtering (–3 dB at ~8 MHz) and features a class-AB output stage capable of driving ≥10 kΩ loads with rail-to-rail swing (within 30 mV of rails at full temperature range). It operates stably at unity gain and supports single-supply configurations down to 1.8 V.
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., from single Li-ion or two alkaline cells. |
| Offset Voltage (max) | ±90 µV at 25°C - ensures <0.004% error in 2.5 V full-scale 16-bit ADC front-ends. |
| Gain Bandwidth | 300 kHz - supports stable closed-loop gain up to 100× for DC-coupled sensor amplification. |
| Quiescent Current | 35 µA per amplifier - allows dual-channel precision amplification in sub-100 µA system budgets. |
| Input Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - permits true rail-to-rail input sensing, including ground-referenced transducers. |
| Output Swing | Within 30 mV of rails (TA = −40°C to +125°C) - preserves >98% dynamic range in 3.3 V systems. |
| CMRR | 108 dB typical - rejects common-mode noise from shared PCB power planes in mixed-signal layouts. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or feedback network; rail-to-rail capable. |
| 2 | IN− A | Inverting input, channel A - connects to feedback resistor or sensor bridge leg. |
| 3 | IN+ A | Noninverting input, channel A - accepts high-impedance sensor signals with ±275 pA bias current. |
| 4 | V− | Negative supply rail - reference for both amplifiers; must be decoupled locally with 100 nF ceramic. |
| 5 | IN+ B | Noninverting input, channel B - independent high-Z node for second sensor channel. |
| 6 | IN− B | Inverting input, channel B - supports differential or single-ended configuration per channel. |
| 7 | OUT B | Amplifier B output - electrically isolated from OUT A; shares same V+ and V− rails. |
| 8 | V+ | Positive supply rail - powers both amplifiers; tolerant of 1.8–5.5 V with internal EMI filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Zerø-Drift architecture | Auto-calibrates offset every 8 µs, achieving <0.05 µV/°C drift - eliminates manual calibration in field-deployed instruments. |
| Rail-to-rail I/O | Input extends 100 mV beyond supplies; output swings within 30 mV - maximizes usable range in 1.8 V systems. |
| Internal EMI/RFI filter | 8 MHz cutoff, 20 dB/decade roll-off - suppresses GSM/ISM band interference without external RC networks. |
| Low quiescent current | 35 µA per amplifier at full temperature range - enables always-on precision sensing in energy-harvesting nodes. |
| Unity-gain stability | No external compensation required - simplifies layout for gain-of-1 buffer or active filter stages. |
Applications
| Battery-Powered Instrumentation | Temperature Measurement |
|---|---|
|
Use Scenario: Portable multimeter measuring 0–200 mV thermocouple outputs with 16-bit resolution. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: Channel A buffers thermocouple, Channel B references cold-junction sensor. Use Value: 20 µV offset and 0.05 µV/°C drift ensure <±0.1°C accuracy over 0–50°C ambient without recalibration. |
Use Scenario: Digital thermostat using 10 kΩ NTC thermistor in voltage-divider configuration. IC Role / Device Role / Timing Role: Precision ratiometric amplifier driving SAR ADC; rejects supply ripple via 108 dB PSRR. Use Value: Rail-to-rail input captures full divider swing; 35 µA per channel extends AA battery life to >2 years. |
| Transducer Signal Conditioning | Electronic Scale Load Cell Interface |
|
Use Scenario: MEMS pressure sensor (2 mV/V sensitivity) in industrial HVAC controller. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (G = 100) with matched OPA2317IDR channels. Use Value: 90 µV max offset contributes <0.05% FSR error; internal EMI filter prevents RF-induced zero-shift during wireless comms. |
Use Scenario: 3-wire load cell (2 mV/V) in kitchen scale with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Dual-op-amp difference amplifier: one channel for excitation monitoring, one for bridge output. Use Value: 300 kHz GBW supports 100× gain with <1 µs settling; 108 dB CMRR rejects common-mode noise from motor drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Lower offset (10 µV max), higher IQ (17 µA per amp), same Zerø-Drift architecture but 350 kHz GBW. | Better DC accuracy for ultra-low-drift requirements; less suitable for >300 kHz small-signal bandwidth needs. | Choose OPA2333AIDR when offset <10 µV is mandatory and supply current budget allows +12 µA per channel. |
| MCP6V82-E/SN | Higher offset (25 µV max), wider supply (1.8–5.5 V), 350 kHz GBW, but no integrated EMI filter. | Requires external R-C input filtering for noisy environments; better drive capability (25 mA short-circuit). | Choose MCP6V82-E/SN when robust output drive is needed and board space permits discrete EMI mitigation. |
Compared with OPA2317IDR, OPA2333AIDR offers tighter offset control at marginally higher current, while MCP6V82-E/SN trades integrated EMI immunity for stronger output drive-making OPA2317IDR optimal for compact, noise-sensitive, battery-constrained designs requiring balanced precision and integration.
Availability
OPA2317IDR is available at Aetrix Electronics and suitable for battery-powered instrumentation, temperature measurement systems, transducer interfaces, and electronic scale designs requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for OPA2317IDR 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 OPA2317IDR belongs to TI's Zerø-Drift precision op-amp product line, designed specifically for cost-sensitive, low-power applications demanding high DC accuracy and rail-to-rail operation in harsh thermal environments.
FAQ
What is the maximum operating temperature range for the OPA2317IDR?
The OPA2317IDR is fully specified from –40°C to +125°C ambient temperature. All key parameters-including offset voltage (±100 µV max), CMRR (≥95 dB), and quiescent current (≤35 µA)-are guaranteed across this range per the SBOS682B datasheet. This makes OPA2317IDR suitable for under-hood automotive sensors and industrial control modules where thermal resilience is critical.
Does the OPA2317IDR require external compensation for unity-gain stability?
No, the OPA2317IDR is internally compensated for unity-gain stability. It drives capacitive loads up to 100 pF without oscillation and maintains phase margin >45° at G = 1. This eliminates the need for external compensation components in buffer, follower, or active filter configurations-reducing BOM count and PCB area in space-constrained OPA2317IDR deployments.
How does the internal EMI filter in the OPA2317IDR improve system-level noise immunity?
The OPA2317IDR integrates a built-in low-pass filter with ~8 MHz –3 dB cutoff and 20 dB/decade attenuation, targeting common cellular and ISM-band interferers (e.g., 900 MHz, 2.4 GHz harmonics). This reduces rectified DC offset shifts caused by RF ingress at the inputs-eliminating the need for external ferrite beads or RC filters in handheld test equipment using OPA2317IDR.
Can the OPA2317IDR drive a 10 kΩ load rail-to-rail at 5.5 V supply?
Yes. The OPA2317IDR's class-AB output stage is rated to drive ≥10 kΩ loads connected anywhere between V+ and V−, with output swing guaranteed within 30 mV of either rail across –40°C to +125°C at all supply voltages (1.8–5.5 V). At 5.5 V supply, this delivers >5.44 Vpp dynamic range into 10 kΩ-verified in Figure 5 of the OPA2317IDR datasheet.
What is the turn-on time specification for the OPA2317IDR?
The OPA2317IDR achieves full offset accuracy within 100 µs after power-up at 5 V supply, as stated in the Electrical Characteristics table (Section 6.7). This fast stabilization enables use in wake-on-event sensor nodes where rapid signal acquisition is required-ensuring OPA2317IDR output settles to final value before ADC sampling begins.
OPA2317IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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 ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2317IDR FAQ
1.How can I place an order for OPA2317IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2317IDR 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 OPA2317IDR reliable?
The price and inventory of OPA2317IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2317IDR is usually 5 days.
3.What payment methods are accepted for OPA2317IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2317IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2317IDR?
OPA2317IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2317IDR 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 OPA2317IDR?
For technical support, including OPA2317IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2317IDR requirements.
6.How does Aetrix verify that OPA2317IDR is sourced from the original manufacturer or authorized distributors?
All OPA2317IDR 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 OPA2317IDR meets industry standards.
7.What is the process for return or replacement of OPA2317IDR?
All OPA2317IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2317IDR, 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 OPA2317IDR part is unused and in its original packaging.
Return procedure for OPA2317IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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