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Texas Instruments PGA450TPWRQ1
- Part No.:
- PGA450TPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Sensor and Detector Interfaces
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PGA450TPWRQ1.pdf
- Description:
- IC SENSOR SIGNAL COND 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,732
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Product details
Overview
PGA450TPWRQ1 from Texas Instruments is an automotive-qualified ultrasonic-sensor signal conditioner IC integrating a low-noise amplifier, 12-bit SAR ADC, configurable digital bandpass filter, on-chip 8051 microcontroller, dual NMOS low-side drivers, and LIN 2.1 physical interface - enabling full echo processing and distance calculation (1 cm resolution, up to 7 m) for park-assist systems.
For engineers reviewing the PGA450TPWRQ1 datasheet, PGA450TPWRQ1 pinout, PGA450TPWRQ1 application, or PGA450TPWRQ1 equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-chain support tailored for automotive ECU design, ultrasonic transducer interfacing, and LIN-based sensor node integration.
Technical Context
The PGA450TPWRQ1 implements a complete analog front-end + digital signal processor architecture: its LNA provides programmable gain (99–1820 V/V), the 12-bit ADC digitizes echo signals with ≤2.5 LSB DNL, and the configurable second-order Butterworth bandpass filter (40–70 kHz center, 4–7 kHz bandwidth) rejects out-of-band noise before envelope detection and time-of-flight computation by the embedded 8051 core.
Communication is handled via fixed 19.2 kbps LIN 2.1 slave interface (no wake-up or diagnostic layer), four-wire SPI for programming and test, and UART; power management includes integrated VREG (4.7–8.4 V output, 100 mA), AVDD/DVDD regulators, and VPWR overvoltage/undervoltage diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | AEC-Q100 Grade 1: –40°C to +125°C ambient - qualified for under-hood automotive ECU placement. |
| Distance Range | Measures 0.1–7 meters through air at 1 cm resolution - supports parking assist and drone landing applications. |
| LNA Gain Range | Programmable 99–1820 V/V (4 settings) - adapts to diverse transducer sensitivities and acoustic path losses. |
| ADC Resolution | 12-bit SAR with ≤2.5 LSB DNL and 0.7 µVrms input-referred noise - preserves weak echo signal fidelity. |
| Bandpass Filter | Configurable 40–70 kHz center frequency, 4–7 kHz bandwidth - rejects interference while preserving ultrasonic return energy. |
| LIN Interface | LIN 2.1 slave (19.2 kbps, no wake-up) - enables direct integration into vehicle body control modules without gateway translation. |
| Drivers | Dual NMOS low-side outputs (OUTA/OUTB, 1.5 A pulse current, 1.2 Ω RDS(on)) - drives transformer-coupled transducers directly. |
Pinout & Package
TSSOP-28 package (9.70 mm × 4.40 mm), thermally enhanced for automotive ambient conditions; pinout validated per TI SLDS185D datasheet Rev D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPWR (Pin 1) | Main power input | Accepts 7–18 V automotive battery rail; powers internal regulators and drivers - includes overvoltage lockout at 25–32 V. |
| VREG (Pin 2) | Transducer bias supply | Programmable 4.7–8.4 V regulated output (±100–150 mV tolerance); supplies transformer primary - supports high-voltage burst drive. |
| LIN (Pin 3) | LIN bus I/O | Integrated LIN 2.1 physical layer transceiver (dominant/recessive thresholds at 0.4–0.6×VPWR); no external components required. |
| IN (Pin 13) | Echo signal input | High-impedance (100 kΩ) LNA input; accepts differential echo from transducer secondary - clamped to ±1.5 V for protection. |
| OUTA / OUTB (Pins 25, 23) | Transducer drive outputs | Dual NMOS low-side switches; sink up to 1.5 A pulsed current with 1.2 Ω RDS(on) - enable transformer-coupled burst generation. |
| SDO / SDI / SCLK / CS (Pins 22, 21, 20, 19) | SPI interface | Four-wire slave SPI (8 MHz max) for firmware update, register access, and debug - supports production programming and field calibration. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 8051 microprocessor | Executes custom echo processing algorithms in 8K-byte OTP; eliminates need for external MCU in cost-sensitive park-assist modules. |
| Configurable burst generator | Programmable pulse count, frequency, and drive mode - optimizes energy transfer for specific transducer resonance (e.g., 40 kHz). |
| Digital signal envelope detect | Hardware-accelerated envelope extraction replaces software-intensive peak detection - reduces CPU load and latency. |
| 768-byte FIFO RAM | Buffers ADC samples during burst acquisition - prevents data loss during high-speed echo capture (up to 1 µs conversion time). |
| Watchdog timer & diagnostics | 250 ms software watchdog plus VPWR OV/UV, AVDD OC, temperature shutdown (150°C) - meets ASIL-B functional safety requirements. |
Applications
| Automotive Park Assist | Intrusion Detection |
|---|---|
Use Scenario: Rear/side parking sensors detecting obstacles within 0.1–5 m range in vehicles. IC Role / Device Role / Timing Role: Signal conditioner and distance calculator - conditions transducer echoes, computes time-of-flight, and reports via LIN. Use Value: Enables compact, single-chip park-assist ECU with 1 cm resolution and <10 ms response time - reduces BOM vs discrete solutions. |
Use Scenario: Perimeter monitoring in garages or secure facilities using wall-mounted ultrasonic transceivers. IC Role / Device Role / Timing Role: Standalone intrusion detector - triggers alarm when object motion alters echo profile within defined zone. Use Value: Self-contained operation with on-chip microcontroller and LIN output eliminates host MCU dependency - simplifies system architecture. |
| Drone Landing Assistance | Large Tank Level Sensing |
Use Scenario: Altitude hold and terrain-following during autonomous drone descent in GPS-denied environments. IC Role / Device Role / Timing Role: High-accuracy ranging subsystem - measures vertical distance to ground with 1 cm resolution up to 7 m. Use Value: Supports stable hover and soft landing via real-time echo processing - critical for payload safety and flight control stability. |
Use Scenario: Non-contact liquid level measurement in industrial tanks (diameter >2 m, height up to 10 m). IC Role / Device Role / Timing Role: Ultrasonic level transmitter - drives transducer, captures echo, calculates fill height, and reports via LIN network. Use Value: Tolerates vapor, foam, and temperature gradients better than radar; 7 m range covers tall storage vessels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrasonic-sensor signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TIDA-00261 Reference Design | System-level solution using PGA450-Q1 + external MCU and power stage - not a direct IC replacement. | Targets higher-performance park-assist with multi-sensor fusion and CAN output. | Select only if full reference design integration is needed; PGA450TPWRQ1 remains the core signal conditioner. |
| MAX35101 | Standalone ultrasonic receiver IC (no transmitter drivers, no MCU, no LIN) - requires external microcontroller and driver circuitry. | Used in portable medical or industrial proximity sensing where size and integration are less critical than ultra-low power. | Choose MAX35101 only for battery-powered, receive-only applications; PGA450TPWRQ1 integrates transmit, receive, and protocol. |
Compared with TIDA-00261 (a reference design, not a drop-in IC) and MAX35101 (receive-only, no drivers or LIN), the PGA450TPWRQ1 uniquely combines transducer drive, echo conditioning, digital processing, and automotive LIN communication in one AEC-Q100-qualified package - reducing component count, PCB area, and system validation effort.
Availability
PGA450TPWRQ1 is available at Aetrix Electronics and suitable for automotive park-assist ECUs, drone landing systems, and industrial tank-level sensors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for PGA450TPWRQ1 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, embedded processing, and automotive ICs - with decades of experience in high-reliability automotive electronics.
The PGA450TPWRQ1 belongs to TI's ultrasonic sensing portfolio, designed specifically to replace discrete transducer interface circuits in automotive and industrial distance-measurement applications - delivering system-level cost and size reduction.
FAQ
What is the maximum measurable distance of the PGA450TPWRQ1?
The PGA450TPWRQ1 supports distance measurements up to 7 meters through air with 1 cm resolution, depending on transducer-transformer pair selection and environmental conditions. This range is achieved using its configurable burst generator, low-noise amplifier, and high-fidelity 12-bit ADC - all optimized for ultrasonic echo capture in automotive park-assist and drone landing applications. The PGA450TPWRQ1 achieves this performance while maintaining AEC-Q100 Grade 1 qualification.
Does the PGA450TPWRQ1 include an integrated microcontroller?
Yes, the PGA450TPWRQ1 integrates an 8051-based 8-bit microprocessor with 8K bytes of OTP program memory, 768 bytes of FIFO RAM, and 256 bytes of scratchpad RAM. This enables full echo signal processing, time-of-flight calculation, and LIN message formatting on-chip - eliminating the need for an external MCU in many ultrasonic sensing applications. The PGA450TPWRQ1 leverages this core to deliver standalone functionality in park-assist and intrusion-detection systems.
What LIN protocol version does the PGA450TPWRQ1 support?
The PGA450TPWRQ1 implements the LIN 2.1 physical layer and protocol stack at a fixed 19.2 kbps baud rate, but omits wake-up functionality, transport layer, node configuration services, and diagnostic layer per the datasheet. It operates strictly as a LIN slave device compliant with Section 2.1 of LIN 2.1 - making it suitable for simple sensor-node integration into existing LIN networks without gateway intervention. The PGA450TPWRQ1 uses this interface to report distance data directly to body control modules.
Can the PGA450TPWRQ1 drive ultrasonic transducers directly?
Yes, the PGA450TPWRQ1 features dual NMOS low-side drivers (OUTA and OUTB) capable of sinking up to 1.5 A pulsed current with 1.2 Ω RDS(on) at 105°C. These outputs are designed to drive transformer-coupled ultrasonic transducers directly, supporting configurable burst generation with programmable pulse count and frequency. The PGA450TPWRQ1 also provides a dedicated VREG pin (4.7–8.4 V, 100 mA) to bias the transformer primary - completing the high-voltage transmit path.
What is the operating temperature range for the PGA450TPWRQ1?
The PGA450TPWRQ1 is AEC-Q100 qualified for Automotive Grade 1 operation, with a guaranteed ambient operating temperature range of –40°C to +125°C. This rating is validated across all key functions including LNA performance, ADC accuracy, LIN communication, and driver thermal behavior - ensuring reliable operation in under-hood ECU environments. The PGA450TPWRQ1 maintains specified electrical characteristics throughout this full range, as confirmed in TI's SLDS185D datasheet.
PGA450TPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Signal Conditioner
- Input Type:
- -
- Output Type:
- -
- Current - Supply:
- 15 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
PGA450TPWRQ1 FAQ
1.How can I place an order for PGA450TPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PGA450TPWRQ1 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 PGA450TPWRQ1 reliable?
The price and inventory of PGA450TPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PGA450TPWRQ1 is usually 5 days.
3.What payment methods are accepted for PGA450TPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PGA450TPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PGA450TPWRQ1?
PGA450TPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PGA450TPWRQ1 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 PGA450TPWRQ1?
For technical support, including PGA450TPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PGA450TPWRQ1 requirements.
6.How does Aetrix verify that PGA450TPWRQ1 is sourced from the original manufacturer or authorized distributors?
All PGA450TPWRQ1 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 PGA450TPWRQ1 meets industry standards.
7.What is the process for return or replacement of PGA450TPWRQ1?
All PGA450TPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with PGA450TPWRQ1, 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 PGA450TPWRQ1 part is unused and in its original packaging.
Return procedure for PGA450TPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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