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Texas Instruments OPA4171AQPWRQ1
- Part No.:
- OPA4171AQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4171AQPWRQ1.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,294
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Product details
Overview
OPA4171AQPWRQ1 from Texas Instruments is a quad-channel, AEC-Q100 Grade 1 automotive-qualified operational amplifier with rail-to-rail output, 3 MHz gain bandwidth, ±0.3 µV/°C typical offset drift, and 14 nV/√Hz input voltage noise at 1 kHz - deployed in precision sensor signal conditioning and battery-powered instrumentation within vehicle power modules and temperature measurement systems.
For engineers reviewing the OPA4171AQPWRQ1 datasheet, OPA4171AQPWRQ1 pinout, OPA4171AQPWRQ1 application, or OPA4171AQPWRQ1 equivalent, key selection criteria include its 2.7 V to 36 V single-supply operation, 120 dB CMRR, 475 µA per amplifier quiescent current, HBM ESD rating of ±2 kV, and SOIC-14/TSSOP-14 package compatibility for space-constrained automotive PCBs.
Technical Context
The OPA4171AQPWRQ1 implements a robust bipolar-input op amp architecture optimized for wide supply range (±1.35 V to ±18 V) and stable operation with capacitive loads up to 300 pF. Its input stage operates 100 mV below V– and within 2 V of V+, enabling true single-supply sensing near ground while avoiding phase reversal under overdrive.
Each of the four independent amplifiers features matched electrical characteristics across temperature (–40°C to +125°C), including 0.25 mV typical input offset voltage, 1.5 V/µs slew rate, and 110 dB open-loop gain - ensuring consistent channel-to-channel performance in multi-signal acquisition and feedback control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7 V to 36 V single-supply (±1.35 V to ±18 V dual); supports direct interface with 12 V/24 V automotive rails without regulation. |
| Gain Bandwidth | 3 MHz; enables stable closed-loop operation at unity gain up to 3 MHz or G = 10 up to 300 kHz for sensor front-end filtering. |
| Input Offset Drift | ±0.3 µV/°C typical; ensures < ±0.5 mV total drift over –40°C to +125°C, critical for uncalibrated temperature/strain measurements. |
| Input Voltage Noise | 14 nV/√Hz at 1 kHz; low-noise performance suitable for high-gain transducer amplification without dominating system noise floor. |
| Quiescent Current | 475 µA per amplifier; enables four-channel precision amplification in battery-powered ECUs with sub-2 mA total IQ. |
| CMRR | 120 dB typical at ±18 V; rejects common-mode interference from noisy power domains in motor control or power module monitoring. |
| ESD Rating | HBM ±2 kV, CDM ±1 kV; meets AEC-Q100 stress requirements for automotive assembly and field reliability. |
Pinout & Package
OPA4171AQPWRQ1 is packaged in a 14-pin SOIC (D) or TSSOP (PW) with 8.65 mm × 3.91 mm (SOIC) or 5.00 mm × 4.40 mm (TSSOP) body size, rated for –40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | Accepts signals down to V– – 0.1 V; used for high-impedance sensor inputs like thermistors or bridge arms. |
| –IN A (Pin 2) | Inverting input, Channel A | Configures standard inverting gain stages or differential amplifiers with matched external resistors. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail swing (V– + 0.35 V to V+ – 0.35 V); drives ADC inputs or low-side current sense buffers directly. |
| V+ (Pin 4) | Positive supply | Connects to main system rail (e.g., 5 V, 12 V, or 24 V); decoupling required within 1 cm for stability. |
| V– (Pin 11) | Negative supply | Typically grounded in single-supply systems; enables true zero-input capability for bipolar signal handling. |
| +IN B (Pin 5), –IN B (Pin 6), OUT B (Pin 7) | Channel B inputs/outputs | Electrically identical to Channel A; supports dual-sensor monitoring or cascaded gain stages. |
| +IN C (Pin 10), –IN C (Pin 9), OUT C (Pin 8) | Channel C inputs/outputs | Enables three independent analog channels on one IC - e.g., voltage, current, and temperature in power modules. |
| +IN D (Pin 12), –IN D (Pin 13), OUT D (Pin 14) | Channel D inputs/outputs | Completes quad functionality for redundancy, differential pairs, or multi-axis sensor interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 350 mV of both supply rails at full load, maximizing dynamic range into 12-bit+ ADCs without level-shifting. |
| No phase reversal | Input overdrive beyond common-mode range forces output to rail instead of inverting - prevents latch-up in safety-critical feedback paths. |
| Stable with 300 pF load | Eliminates need for external isolation resistors in many PCB trace or cable-driven applications, reducing BOM count. |
| Low input bias current | ±8 pA typical enables use with high-impedance sources (e.g., pH electrodes, piezoelectric sensors) without significant error. |
| Automotive qualification | AEC-Q100 Grade 1 certification ensures validated reliability for engine bay, transmission, and ADAS subsystems. |
Applications
| Temperature Measurement | Bridge Amplifier |
|---|---|
|
Use Scenario: Amplifying low-level signals from NTC thermistors or RTDs in HVAC control units and battery thermal management systems. IC Role / Device Role / Timing Role: Precision noninverting amplifier with matched quad channels enabling simultaneous monitoring of multiple cell/module temperatures. Use Value: ±0.3 µV/°C drift and 14 nV/√Hz noise ensure < ±0.1°C measurement uncertainty over full automotive temperature range without calibration. |
Use Scenario: Conditioning differential outputs from load cells, pressure sensors, or torque transducers in electric power steering and brake-by-wire systems. IC Role / Device Role / Timing Role: Instrumentation-grade differential-to-single-ended conversion with 120 dB CMRR rejecting common-mode noise from motor switching. Use Value: 0.25 mV typical VOS and rail-to-rail output preserve >98% of bridge full-scale range into 16-bit SAR ADCs. |
| Tracking Amplifier | Battery-Powered Instrument |
|
Use Scenario: Real-time voltage/current tracking in DC-DC converter feedback loops and active rectifier control within automotive power modules. IC Role / Device Role / Timing Role: High-speed unity-gain buffer with 3 MHz GBW and 1.5 V/µs slew rate maintaining loop stability during transient load steps. Use Value: 6 µs settling time to 0.1% ensures accurate sampling of fast-switching waveforms for digital control algorithms. |
Use Scenario: Signal conditioning in portable diagnostic tools, handheld multimeters, and wireless sensor nodes powered by Li-ion batteries. IC Role / Device Role / Timing Role: Quad-channel analog front-end delivering ultra-low quiescent current (475 µA/channel) and wide supply tolerance (2.7–36 V). Use Value: Sub-2 mA total IQ extends battery life beyond 100 hours while maintaining precision across discharge voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4197IPWR | Higher precision: 10 µV max VOS, 0.1 µV/°C drift, but higher IQ (1 mA/channel) and no AEC-Q100 qualification. | Targeted at industrial test equipment, not automotive safety-critical systems. | Select when absolute offset accuracy outweighs automotive qualification and power budget constraints. |
| LM2902QDRQ1 | Lower cost, wider temp range (–40°C to +125°C), but lower performance: 35 µV max VOS, 700 kHz GBW, 0.3 V/µs slew rate. | Suitable for non-precision functions like comparator hysteresis or basic signal buffering in infotainment. | Select for cost-sensitive, non-safety-critical applications where 3 MHz bandwidth and low noise are unnecessary. |
Compared with OPA4171AQPWRQ1, OPA4197IPWR delivers superior DC precision at higher power and without automotive validation, while LM2902QDRQ1 offers functional equivalence only in low-bandwidth, non-precision roles - making OPA4171AQPWRQ1 the optimal balance of automotive compliance, noise, speed, and quiescent power for mid-tier precision analog systems.
Availability
OPA4171AQPWRQ1 is available at Aetrix Electronics and suitable for automotive power modules, battery management systems, and precision sensor interfaces requiring stable component supply across extended temperature and long product lifecycles.
Supply support for OPA4171AQPWRQ1 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 automotive IC design expertise and rigorous AEC-Q100 validation infrastructure.
The OPAx171-Q1 family was engineered specifically for automotive signal conditioning - delivering wide-supply, low-drift, low-noise op amp performance in harsh environments where reliability and parametric consistency are non-negotiable.
FAQ
What is the operating temperature range for OPA4171AQPWRQ1?
The OPA4171AQPWRQ1 is qualified for AEC-Q100 Grade 1 operation from –40°C to +125°C ambient temperature. This range is fully supported across all electrical specifications in the datasheet, including offset voltage, CMRR, and gain bandwidth - making it suitable for under-hood and transmission control unit deployments.
Does OPA4171AQPWRQ1 support true rail-to-rail input?
OPA4171AQPWRQ1 supports rail-to-rail output but not full rail-to-rail input. Its input common-mode range extends 100 mV below V– and within 2 V of V+ for normal operation. It can accept inputs up to V+ + 0.1 V, but with degraded parameters including higher offset voltage and reduced CMRR - as specified in Table 7-1 of the datasheet.
Can OPA4171AQPWRQ1 drive capacitive loads without external compensation?
Yes - OPA4171AQPWRQ1 is stable with capacitive loads up to 300 pF in unity-gain configuration, per Section 7.3.3 of the datasheet. For loads exceeding 300 pF, a series isolation resistor (e.g., 50 Ω) between output and load is recommended to maintain phase margin and prevent overshoot or oscillation.
What is the ESD rating of OPA4171AQPWRQ1?
OPA4171AQPWRQ1 has an HBM ESD rating of ±2000 V and a CDM rating of ±1000 V, per AEC-Q100-002 and AEC-Q100-011. These values are explicitly documented in Section 6.2 of the SBOS556D datasheet and reflect qualification testing performed on the final packaged device.
How does OPA4171AQPWRQ1 handle input overvoltage conditions?
OPA4171AQPWRQ1 incorporates internal phase-reversal protection. When input voltages exceed the linear common-mode range, the output saturates toward the appropriate supply rail instead of inverting polarity - preventing erroneous control signals in safety-critical feedback loops such as motor current regulation or battery cell monitoring.
OPA4171AQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 475µA (x4 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4171AQPWRQ1 FAQ
1.How can I place an order for OPA4171AQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4171AQPWRQ1 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 OPA4171AQPWRQ1 reliable?
The price and inventory of OPA4171AQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4171AQPWRQ1 is usually 5 days.
3.What payment methods are accepted for OPA4171AQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4171AQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4171AQPWRQ1?
OPA4171AQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4171AQPWRQ1 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 OPA4171AQPWRQ1?
For technical support, including OPA4171AQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4171AQPWRQ1 requirements.
6.How does Aetrix verify that OPA4171AQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA4171AQPWRQ1 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 OPA4171AQPWRQ1 meets industry standards.
7.What is the process for return or replacement of OPA4171AQPWRQ1?
All OPA4171AQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4171AQPWRQ1, 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 OPA4171AQPWRQ1 part is unused and in its original packaging.
Return procedure for OPA4171AQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4171AQPWRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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