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Texas Instruments OPA2172QDGKQ1
- Part No.:
- OPA2172QDGKQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2172QDGKQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:349
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Product details
Overview
OPA2172QDGKQ1 from Texas Instruments is a dual-channel, automotive-grade rail-to-rail output operational amplifier with 10 MHz gain bandwidth, ±0.2 mV max input offset voltage, and 7 nV/√Hz input voltage noise density - designed for precision signal conditioning in HEV/EV powertrain and ADAS sensor interfaces.
For engineers reviewing the OPA2172QDGKQ1 datasheet, OPA2172QDGKQ1 pinout, OPA2172QDGKQ1 application, or OPA2172QDGKQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), EMI-filtered inputs, rail-to-rail output swing within 70 mV of supply rails at 36 V, and low 1.6 mA per amplifier quiescent current.
Technical Context
The OPA2172QDGKQ1 employs a three-stage architecture with active-feedforward gain stage, enabling high-speed settling (2 µs to 0.1%) and robust stability into capacitive loads up to 500 pF without external compensation. Its JFET-input stage delivers ultra-low input bias current (±8 pA at 25°C) and extended common-mode range - operating 100 mV below V– and within 2 V of V+.
Unlike conventional op amps specified at single supply voltages, the OPA2172QDGKQ1 is fully characterized across 4.5 V to 36 V (±2.25 V to ±18 V), with guaranteed performance including 120 dB CMRR, ±1 µV/V PSRR, and no phase reversal when inputs exceed rails - critical for automotive sensor front-ends exposed to transient overvoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 36 V single-supply; enables direct interface with 12 V/24 V automotive batteries without LDO pre-regulation |
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop operation at G = +1 with ≥100 kHz small-signal bandwidth |
| Input Offset Voltage | ±0.2 mV max - ensures ≤2 mV error in 10 V full-scale current sense applications at room temperature |
| Input Voltage Noise | 7 nV/√Hz at 1 kHz - preserves SNR in low-level sensor amplification (e.g., thermocouple, strain gauge) |
| Output Swing | Within 70 mV of rails at 36 V/10 kΩ - delivers >35.8 Vpp dynamic range for high-fidelity analog output stages |
| Quiescent Current | 1.6 mA per amplifier - allows dual-channel precision amplification in power-constrained ECUs with <3.2 mA total IQ |
| EMI Rejection | ≥58.5 dB at 900 MHz - mitigates GSM interference in infotainment and telematics subsystems |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thermally enhanced for automotive under-hood operation; 0.65 mm pitch, exposed thermal pad (not electrically connected).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads down to 2 kΩ while maintaining rail-to-rail swing and THD+N < 0.00005% |
| 2 | –IN A | Inverting input A - high-impedance JFET node (10¹³ Ω || 4 pF) minimizes leakage-induced offset in high-Z sensor circuits |
| 3 | +IN A | Noninverting input A - accepts common-mode signals from (V–) – 0.1 V to (V+) – 2 V, enabling single-supply transducer interfacing |
| 4 | V– | Negative supply - referenced to chassis ground in single-supply automotive systems; supports true 0 V input capability |
| 5 | +IN B | Noninverting input B - identical specs to Pin 3; enables dual-channel differential sensing or signal splitting |
| 6 | –IN B | Inverting input B - matched to Pin 2 for common-mode rejection in dual-op-amp instrumentation topologies |
| 7 | OUT B | Amplifier B output - independently buffered; supports dual-path signal processing without crosstalk (≥110 dB channel separation) |
| 8 | V+ | Positive supply - accepts up to 36 V transient surges per ISO 7637-2 Pulse 1/2a; internal protection prevents latch-up |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±4 kV / CDM ±1 kV ESD robustness - meets automotive reliability requirements |
| Rail-to-rail output with 70-mV headroom | Enables maximum dynamic range in 3.3 V or 5 V MCU ADC interfaces without level-shifting circuitry |
| No phase reversal on overvoltage | Prevents catastrophic output inversion during load dump or jump-start events - eliminates need for external clamping diodes |
| EMI-filtered inputs | Rejects 900 MHz GSM and 2.4 GHz Bluetooth interference without external RC filters - reduces PCB area and BOM cost |
| Low 1.6 mA per amplifier IQ | Supports always-on sensor monitoring in battery-powered ADAS modules with <10 µA sleep current via external enable control |
Applications
| HEV/EV Battery Monitoring | ADAS Radar Signal Conditioning |
|---|---|
Use Scenario: Amplifying shunt voltage in 400 V traction battery pack with ±1% SOC accuracy requirement. IC Role / Device Role / Timing Role: Precision current sense amplifier with 10 MHz bandwidth to capture fast transient currents during regenerative braking. Use Value: ±0.2 mV offset and 7 nV/√Hz noise ensure <100 µΩ effective shunt resolution at 100 A full scale. |
Use Scenario: Conditioning IF signals from 77 GHz radar receivers before digitization by automotive SoC. IC Role / Device Role / Timing Role: Low-noise, high-linearity gain stage with 0.00005% THD+N at 1 kHz to preserve FMCW chirp integrity. Use Value: 120 dB CMRR rejects common-mode noise from switching power supplies in radar ECU enclosures. |
| Automotive Climate Control Sensors | Avionics Landing Gear Position Feedback |
Use Scenario: Amplifying resistive temperature detector (RTD) outputs in HVAC blend door actuators. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched input pairs for 3-wire RTD configuration. Use Value: ±0.3 µV/°C drift limits temperature error to <0.1°C over –40°C to +125°C ambient range. |
Use Scenario: Signal conditioning for potentiometric position sensors in fly-by-wire landing gear actuation. IC Role / Device Role / Timing Role: Fault-tolerant dual-op-amp buffer with independent channels for redundancy-critical feedback paths. Use Value: AEC-Q100 qualification and 150°C junction rating ensure operation during hydraulic system overheating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7332QMA/NOPB | Higher 2.5 mA IQ, wider 24 MHz GBW, but only 105 dB CMRR and no AEC-Q100 Grade 1 rating | Suitable for non-automotive industrial controls requiring higher speed; not qualified for under-hood deployment | Select when >10 MHz bandwidth is required and automotive qualification is unnecessary |
| TSV912IQ2T | Lower 800 µA IQ, 8 MHz GBW, 6.5 nV/√Hz noise, but only rated to +105°C and lacks EMI filtering | Fits cost-sensitive body electronics (e.g., mirror controls); insufficient for powertrain or ADAS thermal environments | Choose for cabin modules where ambient temperature stays below +105°C and EMI immunity is secondary |
Compared with LM7332QMA/NOPB and TSV912IQ2T, the OPA2172QDGKQ1 uniquely combines AEC-Q100 Grade 1 qualification, 120 dB CMRR, and integrated EMI filtering - making it the only option qualified for safety-critical HEV/EV powertrain signal chains.
Availability
OPA2172QDGKQ1 is available at Aetrix Electronics and suitable for automotive battery management, ADAS radar signal conditioning, and avionics position feedback systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2172QDGKQ1 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 deep expertise in automotive electronics and functional safety design.
The OPA2172QDGKQ1 belongs to TI's OPAx172-Q1 family - engineered specifically for automotive signal conditioning applications demanding precision, robustness, and AEC-Q100 compliance across harsh operating environments.
FAQ
What automotive qualification level does the OPA2172QDGKQ1 meet?
The OPA2172QDGKQ1 is AEC-Q100 qualified to Grade 1, with device-level testing confirming reliable operation from –40°C to +125°C ambient temperature, HBM ESD rating of ±4 kV, and CDM ESD rating of ±1 kV - meeting stringent requirements for engine bay and powertrain applications.
Does the OPA2172QDGKQ1 support true single-supply operation with input signals near ground?
Yes. The OPA2172QDGKQ1 features rail-to-rail input capability extending 100 mV below the negative supply rail (V–), enabling direct interface with 0 V-referenced sensors like thermistors and bridge transducers without level-shifting circuitry - a key advantage in automotive 12 V systems.
What is the maximum capacitive load the OPA2172QDGKQ1 can drive without instability?
The OPA2172QDGKQ1 maintains stability driving up to 500 pF capacitive loads with minimal overshoot (<5%) in unity-gain inverting configuration, as verified in TI's SBOS809A datasheet Figure 23 - eliminating need for isolation resistors in LCD bias or DAC output buffering applications.
How does the OPA2172QDGKQ1 handle input overvoltage conditions common in automotive environments?
The OPA2172QDGKQ1 incorporates internal phase-reversal protection that prevents output inversion when inputs exceed the common-mode range - instead clamping output to the nearest rail. This eliminates risk of erroneous control signals during load dump or jump-start events without external protection components.
Is the OPA2172QDGKQ1 pin-compatible with other devices in the OPAx172-Q1 family?
No. The OPA2172QDGKQ1 uses an 8-pin VSSOP package (DGK), while the quad-channel OPA4172-Q1 uses a 14-pin TSSOP (PW) package. Pin functions are not shared between packages - PCB layout must be specific to the DGK footprint for OPA2172QDGKQ1.
OPA2172QDGKQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.6mA (x2 Channels)
- Current - Output / Channel:
- 75 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:
- 8-VSSOP
OPA2172QDGKQ1 FAQ
1.How can I place an order for OPA2172QDGKQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2172QDGKQ1 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 OPA2172QDGKQ1 reliable?
The price and inventory of OPA2172QDGKQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2172QDGKQ1 is usually 5 days.
3.What payment methods are accepted for OPA2172QDGKQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2172QDGKQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2172QDGKQ1?
OPA2172QDGKQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2172QDGKQ1 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 OPA2172QDGKQ1?
For technical support, including OPA2172QDGKQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2172QDGKQ1 requirements.
6.How does Aetrix verify that OPA2172QDGKQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2172QDGKQ1 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 OPA2172QDGKQ1 meets industry standards.
7.What is the process for return or replacement of OPA2172QDGKQ1?
All OPA2172QDGKQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2172QDGKQ1, 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 OPA2172QDGKQ1 part is unused and in its original packaging.
Return procedure for OPA2172QDGKQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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