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Texas Instruments OPA2170AIDSGR
- Part No.:
- OPA2170AIDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
OPA2170AIDSGR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:17,733
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Product details
Overview
OPA2170AIDSGR from Texas Instruments is a dual, precision rail-to-rail input/output operational amplifier optimized for low-power, high-accuracy sensor signal conditioning in building automation systems. It features 0.4 µV/°C offset drift, 0.1 µV p-p noise (0.1–10 Hz), ±25 µV max offset voltage, 1.2 MHz gain-bandwidth product, and operates from ±1.35 V to ±18 V supplies. It is used in temperature and humidity sensor front-ends such as HDC1000 and TMP112 interfaces.
For engineers reviewing the OPA2170AIDSGR datasheet, OPA2170AIDSGR pinout, OPA2170AIDSGR application, or OPA2170AIDSGR equivalent, key selection criteria include ultra-low offset drift over temperature, rail-to-rail I/O capability for single-supply 3.3 V systems, low quiescent current (110 µA per channel), and AEC-Q100 Grade 3 qualification for industrial reliability.
Technical Context
The OPA2170AIDSGR employs a precision bipolar input stage with laser-trimmed thin-film resistors to achieve stable DC performance across –40°C to +125°C. Its architecture supports true rail-to-rail input common-mode range (including V–) and rail-to-rail output swing within 10 mV of each rail at 10 kΩ load.
It integrates EMI-hardened input circuitry and internal RF filtering, enabling robust operation in noisy building automation environments-e.g., near HVAC controllers or wireless transceivers-without external shielding or compensation networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±1.35 V to ±18 V - supports dual-supply industrial sensors and single-supply 3.3 V or 5 V systems without level-shifting. |
| Input Offset Voltage (Max) | ±25 µV - enables direct amplification of µV-level thermistor or RTD bridge outputs without nulling circuitry. |
| Offset Drift (Typ) | 0.4 µV/°C - ensures <1 µV total drift over 0–70°C ambient, critical for uncalibrated temperature sensing nodes. |
| Gain-Bandwidth Product | 1.2 MHz - sufficient for anti-aliasing filtering and closed-loop stability with 10–100 kHz sensor excitation signals. |
| Quiescent Current (per ch) | 110 µA - allows continuous operation in battery-powered nodes (e.g., TIDA-00374) with multi-year coin-cell lifetime. |
| Input Voltage Noise (0.1–10 Hz) | 0.1 µVp-p - preserves resolution in high-gain, low-frequency sensor paths like humidity ADC front-ends. |
| CMRR (Min) | 114 dB - rejects common-mode interference from shared ground returns in multi-sensor PCB layouts. |
Pinout & Package
OPA2170AIDSGR is housed in an 8-pin WSON package (2.0 mm × 2.0 mm, 0.5 mm pitch) with wettable flanks for automated optical inspection. Thermal pad exposed on bottom improves power dissipation in compact sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Channel A output | Drives ADC input or filter network; rail-to-rail swing enables full utilization of 12-bit+ SAR ADC reference range. |
| 2 (–INA) | Inverting input A | Accepts feedback network or differential sensor signal; high impedance (>1013 Ω) prevents loading of high-Z bridges. |
| 3 (+INA) | Non-inverting input A | Connects to reference voltage or sensor node; rail-to-rail CM range supports direct connection to 0 V–3.3 V thermistor dividers. |
| 4 (V–) | Negative supply | Supports dual-supply (±5 V) or single-supply (0 V) configurations; tied to GND in unipolar systems. |
| 5 (+INB) | Non-inverting input B | Used for second sensor channel (e.g., ambient temp + humidity reference); independent biasing avoids crosstalk. |
| 6 (–INB) | Inverting input B | Configured for transimpedance or difference amplification; matched layout with Pin 2 minimizes thermal EMF errors. |
| 7 (OUTB) | Channel B output | Provides simultaneous dual-channel conditioning for differential pair sensors or redundancy paths. |
| 8 (V+) | Positive supply | Accepts 3.3 V, 5 V, or ±15 V; internal protection clamps prevent latch-up during supply sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–3.3 V microcontroller ADCs and low-voltage references without level-shifting components. |
| 0.4 µV/°C max offset drift | Reduces calibration frequency in field-deployed thermostats and occupancy sensors where temperature gradients exceed 50°C. |
| AEC-Q100 Grade 3 qualified | Validated for –40°C to +125°C operation, meeting reliability requirements for HVAC control panels and lighting ballasts. |
| EMI hardening | Suppresses RF rectification from 900 MHz ISM band transceivers (e.g., CC1310), eliminating false triggers in smoke detector analog front-ends. |
| Low 0.1 µVp-p 0.1–10 Hz noise | Maintains effective resolution >16 bits for slow-varying environmental signals (e.g., CO₂ sensor baselines). |
Applications
| Temperature Sensor Front-End | Humidity Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying low-level voltage from LMT70 analog temperature sensor in smart thermostat PCBs. IC Role / Device Role / Timing Role: Precision instrumentation amplifier stage with gain = 100, driving ADS1018 12-bit delta-sigma ADC. Use Value: Achieves ±0.1°C measurement accuracy over 0–50°C without factory calibration due to sub-µV/°C drift. | Use Scenario: Conditioning differential output of HDC1000 relative humidity sensor in battery-powered occupancy nodes. IC Role / Device Role / Timing Role: Dual-channel buffer and level shifter between HDC1000's 0–3.3 V analog outputs and MSP430FR5969's internal ADC inputs. Use Value: Enables simultaneous humidity and temperature sampling with <1 LSB error at 12-bit resolution under 3.3 V single supply. |
| Building Fire Safety Analog Monitor | Wireless Sensor Node Reference Buffer |
Use Scenario: Signal conditioning for smoke chamber photodiode current in TIDM-G2xxSMOKEDETECTOR reference design. IC Role / Device Role / Timing Role: Transimpedance amplifier converting nA-level photocurrent into measurable voltage for MSP430G2553 ADC. Use Value: 110 µA/channel quiescent current extends CR2032 battery life beyond 5 years in standby mode. | Use Scenario: Providing stable 2.5 V reference and buffered I2C pull-up for OPT3001 ambient light sensor in TIDA-00373 backlight control system. IC Role / Device Role / Timing Role: Dual op-amp configured as precision voltage reference buffer and I2C bus repeater driver. Use Value: Eliminates I2C signal degradation across 10 cm flex PCB traces while maintaining <0.01% reference stability. |
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 | Zero-drift auto-zero architecture; 0.02 µV/°C drift vs. OPA2170AIDSGR's 0.4 µV/°C; higher 350 µA/ch current. | Better for <0.05°C accuracy over wide temperature ranges; less suitable for coin-cell nodes requiring <200 µA/ch. | Select OPA2333AIDR only when drift-critical calibration-free operation outweighs battery life constraints. |
| OPA2182IDGKR | Lower 0.025 µV/°C drift and 5.7 nV/√Hz noise; 450 µA/ch current; requires ≥±2.25 V supply. | Targeted at metrology-grade sensor hubs; incompatible with 3.3 V single-supply designs using OPA2170AIDSGR. | Choose OPA2182IDGKR for lab-grade environmental monitors-not for space-constrained building automation edge nodes. |
Compared with OPA2333AIDR and OPA2182IDGKR, the OPA2170AIDSGR delivers optimal balance of industrial-grade drift performance, ultra-low power, and single-supply flexibility-making it the preferred choice for cost-sensitive, long-life building automation sensor nodes.
Availability
OPA2170AIDSGR is available at Aetrix Electronics and suitable for building automation, fire safety systems, and connected sensor nodes requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for OPA2170AIDSGR 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 with over 50 years of analog innovation, delivering high-reliability precision signal-chain products for industrial, automotive, and sensing markets.
The OPA2170AIDSGR belongs to TI's precision op amp portfolio designed specifically for low-power, high-accuracy sensor signal conditioning in building automation, environmental monitoring, and IoT edge devices.
FAQ
What is the maximum operating temperature for the OPA2170AIDSGR?
The OPA2170AIDSGR is rated for continuous operation from –40°C to +125°C ambient temperature. This Grade 3 industrial temperature range is validated per AEC-Q100 and supports deployment in HVAC control panels, lighting ballasts, and outdoor building sensors where enclosure temperatures exceed 85°C.
Does the OPA2170AIDSGR support rail-to-rail input with a single 3.3 V supply?
Yes, the OPA2170AIDSGR supports true rail-to-rail input common-mode range-including V– (GND) and up to V+ (3.3 V)-when operated from a single 3.3 V supply. This allows direct interfacing with resistive sensor dividers referenced to GND and 3.3 V without external level-shifting circuitry.
Can the OPA2170AIDSGR drive an ADC input directly?
Yes, the OPA2170AIDSGR's rail-to-rail output swing (within 10 mV of each rail at 10 kΩ load) and low output impedance (<1 Ω) enable direct connection to SAR and delta-sigma ADC inputs such as those on the ADS1018 or MSP430FR5969-eliminating need for external buffer stages in most building automation signal chains.
Is the OPA2170AIDSGR pin-compatible with other TI dual op amps in the same package?
No, the OPA2170AIDSGR uses a standard 8-pin WSON pinout (SOIC-8 compatible footprint), but its internal channel assignment and supply pin locations differ from non-precision parts like LM2904 or OPA2313. Direct replacement requires schematic and layout review; verified alternatives are listed in the Equivalent & Alternatives section.
What packaging and assembly options are available for the OPA2170AIDSGR?
The OPA2170AIDSGR is supplied exclusively in an 8-pin WSON package (DSG) with dimensions 2.0 mm × 2.0 mm and 0.5 mm pitch. It features a thermal pad on the underside for enhanced heat dissipation and wettable flanks to support automated optical inspection (AOI) in high-volume SMT lines.
OPA2170AIDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 110µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
OPA2170AIDSGR FAQ
1.How can I place an order for OPA2170AIDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2170AIDSGR 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 OPA2170AIDSGR reliable?
The price and inventory of OPA2170AIDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2170AIDSGR is usually 5 days.
3.What payment methods are accepted for OPA2170AIDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2170AIDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2170AIDSGR?
OPA2170AIDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2170AIDSGR 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 OPA2170AIDSGR?
For technical support, including OPA2170AIDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2170AIDSGR requirements.
6.How does Aetrix verify that OPA2170AIDSGR is sourced from the original manufacturer or authorized distributors?
All OPA2170AIDSGR 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 OPA2170AIDSGR meets industry standards.
7.What is the process for return or replacement of OPA2170AIDSGR?
All OPA2170AIDSGR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2170AIDSGR, 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 OPA2170AIDSGR part is unused and in its original packaging.
Return procedure for OPA2170AIDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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