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Texas Instruments OPA4170AIDR
- Part No.:
- OPA4170AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4170AIDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,394
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Product details
Overview
OPA4170AIDR from Texas Instruments is a quad, rail-to-rail output, 36-V single-supply operational amplifier in SOIC-14 package, featuring 1.2 MHz gain bandwidth, 19 nV/√Hz input voltage noise at 1 kHz, 110 µA per amplifier quiescent current, and ±15 pA max input bias current. It operates from –40°C to +125°C and supports precision transducer amplification, bridge sensing, and battery-powered instrumentation.
For engineers reviewing the OPA4170AIDR datasheet, OPA4170AIDR pinout, OPA4170AIDR application, or OPA4170AIDR equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal metrics for SOIC-14, real-world use cases in strain gauge and temperature measurement circuits, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The OPA4170AIDR implements a P-channel JFET input stage enabling ultra-low input bias current (±15 pA max) and rail-to-rail output swing within 35 mV of each supply rail under load. Its internal phase-reversal protection prevents output inversion when inputs exceed the common-mode range - a critical feature for noninverting configurations in power module tracking amplifiers.
Specified across 2.7 V to 36 V (±1.35 V to ±18 V), it maintains 120 dB CMRR at ±18 V and achieves stable operation with capacitive loads up to 300 pF. The device's 2 µV/°C typical offset drift and 0.4 V/µs slew rate support high-accuracy, low-power signal conditioning in industrial sensor interfaces without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7 V to 36 V single supply - enables direct interface with 3.3 V, 5 V, 12 V, and 24 V industrial rails without level-shifting. |
| Gain Bandwidth Product | 1.2 MHz - supports stable unity-gain buffer and G = 10 amplification up to ~120 kHz for sensor signal conditioning. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - ensures minimal added noise in low-level bridge and thermocouple amplifier stages. |
| Quiescent Current | 110 µA per amplifier - allows four independent channels in battery-powered instruments with sub-500 µA total IQ. |
| Input Bias Current | ±15 pA maximum - preserves accuracy in high-impedance pH, photodiode, and piezoelectric sensor front-ends. |
| Common-Mode Rejection | 120 dB at ±18 V - rejects power supply ripple and ground bounce in noisy industrial environments. |
| Rail-to-Rail Output | Swings to within 35 mV of V+ and V− at 1 mA load - maximizes dynamic range in single-supply data acquisition systems. |
Pinout & Package
OPA4170AIDR is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Thermal resistance RθJA is 93.2°C/W, supporting operation up to +125°C ambient with moderate PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or next-stage input; capable of sourcing/sinking ±17 mA. |
| 2 | –IN A | Inverting input, channel A - connects to feedback resistor in inverting configuration or reference node in differential setup. |
| 3 | +IN A | Noninverting input, channel A - accepts high-impedance sensor signals; protected by RFI filtering. |
| 4 | V+ | Positive supply rail - must be decoupled with ≥0.1 µF ceramic capacitor close to pin for stability. |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from other channels; shares no internal substrate coupling. |
| 6 | –IN B | Inverting input, channel B - used for matched dual-channel instrumentation or independent signal paths. |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; supports simultaneous dual-sensor readout. |
| 8 | OUT C | Amplifier C output - enables three-channel analog front-end without additional ICs (e.g., multi-axis strain gauge). |
| 9 | –IN C | Inverting input, channel C - referenced to same V– as all channels; supports common-mode rejection across all four amps. |
| 10 | +IN C | Noninverting input, channel C - maintains 120 dB CMRR even when VCM extends to within 100 mV of V+. |
| 11 | V– | Negative supply rail - serves as system ground reference in single-supply operation; must be low-impedance. |
| 12 | +IN D | Noninverting input, channel D - supports fourth independent sensor channel with identical input impedance (10¹² Ω || 3 pF). |
| 13 | –IN D | Inverting input, channel D - enables full-bridge excitation and differential amplification on dedicated channel. |
| 14 | OUT D | Amplifier D output - completes quad functionality; settles to 0.01% in 28 µs for 10-V step at ±18 V supply. |
Key Features
| Feature | Design Value |
|---|---|
| RFI-filtered inputs | Integrated input-stage filtering suppresses >10 MHz RF interference common in motor drive and switching power supply environments. |
| Phase-reversal protection | Prevents output inversion when inputs exceed common-mode range - eliminates latch-up risk in overvoltage transients. |
| Rail-to-rail output swing | Delivers full dynamic range from (V–) + 35 mV to (V+) – 35 mV at 1 mA, maximizing ADC utilization in 12-bit+ systems. |
| Low 1/f noise | 2 µVPP (0.1–10 Hz) enables stable DC-coupled measurements in precision integrators and thermopile amplifiers. |
| Wide temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor metering applications. |
Applications
| Strain Gauge Amplifier | Temperature Measurement System |
|---|---|
Use Scenario: Full-bridge strain gauge in load cell or pressure transducer, operating from 5 V or 24 V supply with microvolt-level output. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with matched quad topology enabling ratiometric excitation and differential gain. Use Value: 19 nV/√Hz noise and ±15 pA bias current preserve resolution down to 0.01% FS; rail-to-rail output drives SAR ADC directly. |
Use Scenario: RTD or thermistor interface in HVAC controller or process monitor, requiring stable gain and low drift over –25°C to +85°C. IC Role / Device Role / Timing Role: Precision voltage follower and programmable gain stage for linearized temperature signal conditioning. Use Value: 2 µV/°C offset drift and 120 dB CMRR reject self-heating errors and supply ripple; 110 µA/channel enables always-on sensing. |
| Battery-Powered Data Logger | Merchant Power Supply Monitor |
Use Scenario: Portable environmental logger powered by two AA cells (2.4–3.2 V), acquiring voltage, current, and temperature at 10 SPS. IC Role / Device Role / Timing Role: Quad signal conditioner handling sensor excitation, amplification, reference buffering, and anti-alias filtering. Use Value: Sub-500 µA total quiescent current extends battery life beyond 1 year; 2.7 V minimum supply enables full functionality until end-of-life. |
Use Scenario: Secondary-side voltage/current monitoring in AC-DC adapter or PoE PD, where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Tracking amplifier for output regulation loop and isolated sense signal reconstruction. Use Value: Phase-reversal protection prevents control loop instability during line transients; SOIC-14 fits legacy footprints without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182AIDR | Higher precision: 5 µV max VOS, 0.02 µV/°C drift, but 450 µA per amp IQ; 10 MHz GBP. | Used in high-end test equipment and calibration systems where offset stability outweighs power budget. | Select OPA4182AIDR only if <1 µV offset drift over temperature is required and supply current >400 µA per channel is acceptable. |
| LM324DR | Lower performance: 3 mV max VOS, 20 nV/√Hz noise, 1.2 mA per amp IQ, no phase-reversal protection. | Targeted at cost-sensitive consumer electronics with relaxed accuracy and wide-temp not required. | Choose LM324DR only for non-critical 0–70°C applications where BOM cost is primary driver and rail-to-rail output is unnecessary. |
Compared with OPA4170AIDR, OPA4182AIDR trades 4× higher quiescent current for 100× lower offset drift, while LM324DR sacrifices noise, input bias, and protection features to reduce unit cost by 60% - making OPA4170AIDR the optimal balance for industrial-grade, low-power, wide-temperature analog front-ends.
Availability
OPA4170AIDR is available at Aetrix Electronics and suitable for strain gauge amplifiers, temperature measurement systems, battery-powered data loggers, and merchant power supply monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4170AIDR 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 since 1930.
The OPAx170 series was designed as a value-line, high-voltage, low-power op amp family targeting cost-sensitive yet performance-demanding industrial signal chains - emphasizing robustness, wide supply range, and ease of use in single-supply systems.
FAQ
What is the maximum capacitive load the OPA4170AIDR can drive stably?
The OPA4170AIDR is specified to remain stable with capacitive loads up to 300 pF, as confirmed in the Electrical Characteristics table and Typical Characteristics section of the SBOS557E datasheet. This capability supports direct driving of ADC input capacitors and long PCB traces without external isolation resistors, provided layout best practices (short traces, local decoupling) are followed. OPA4170AIDR maintains phase margin >45° under these conditions.
Does the OPA4170AIDR support true rail-to-rail input operation?
The OPA4170AIDR supports rail-to-rail *output* swing but has limited rail-to-rail *input*: its common-mode range extends 100 mV below V– and to within 2 V of V+, with full rail-to-rail input possible only beyond V+ (up to V+ + 100 mV) at reduced performance. This is explicitly stated in the Description section and Figure 4 of the SBOS557E datasheet. OPA4170AIDR is not a true RRI op amp.
What is the ESD rating of the OPA4170AIDR?
The OPA4170AIDR has a Human-Body Model (HBM) ESD rating of ±4000 V and a Charged-Device Model (CDM) rating of ±750 V, per ANSI/ESDA/JEDEC JS-001 and JESD22-C101 standards. These values are listed in Section 7.2 of the SBOS557E datasheet and reflect TI's standard robustness for industrial-grade op amps. No external ESD protection is required for board-level handling under controlled environments.
Can the OPA4170AIDR operate from a single 3.3-V supply?
Yes, the OPA4170AIDR is fully specified from 2.7 V to 36 V single supply, including operation at 3.3 V. At this voltage, it delivers rail-to-rail output swing (within 35 mV of each rail at 1 mA), 1.2 MHz GBP, and 110 µA per amplifier quiescent current - making it suitable for low-voltage IoT sensor nodes. All key parameters in Table 7.7 are guaranteed across this range.
Is the OPA4170AIDR pin-compatible with other quad op amps in SOIC-14?
No - the OPA4170AIDR uses a non-standard pinout optimized for quad independence: pins 1–3, 5–7, 8–10, and 12–14 form four discrete amplifier sections sharing only V+ (pin 4) and V– (pin 11). It is not pin-compatible with LM324, TL084, or MCP6004. Layout migration requires netlist update and routing revision. OPA4170AIDR's pin mapping is unique to the OPAx170 family.
OPA4170AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SOIC
OPA4170AIDR FAQ
1.How can I place an order for OPA4170AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4170AIDR 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 OPA4170AIDR reliable?
The price and inventory of OPA4170AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4170AIDR is usually 5 days.
3.What payment methods are accepted for OPA4170AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4170AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4170AIDR?
OPA4170AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4170AIDR 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 OPA4170AIDR?
For technical support, including OPA4170AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4170AIDR requirements.
6.How does Aetrix verify that OPA4170AIDR is sourced from the original manufacturer or authorized distributors?
All OPA4170AIDR 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 OPA4170AIDR meets industry standards.
7.What is the process for return or replacement of OPA4170AIDR?
All OPA4170AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4170AIDR, 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 OPA4170AIDR part is unused and in its original packaging.
Return procedure for OPA4170AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4170AIDR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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