Texas Instruments PGA460TPWQ1

Overview

PGA460TPWQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive ultrasonic signal processor and transducer driver IC with integrated low-side drivers, 12-bit ADC, programmable time-varying gain (32–90 dB), dual threshold presets, and on-chip temperature sensor. It supports transformer-based and direct-drive topologies for ultrasonic park assist systems operating from –40°C to +105°C ambient.

For engineers reviewing the PGA460TPWQ1 datasheet, PGA460TPWQ1 pinout, PGA460TPWQ1 application, or PGA460TPWQ1 equivalent, key selection criteria include burst/listen timing control, echo envelope DSP processing, high-voltage IO interface compatibility, and diagnostic coverage for transducer decay, excitation voltage, and supply monitoring.

Technical Context

The PGA460TPWQ1 integrates a 16 MHz core clock, dual complimentary low-side drivers with configurable current limit (15–570 mA), and a low-noise analog front-end feeding a 12-bit ADC. Its DSP path implements band-pass filtering (adjustable center frequency ±2 kHz steps), demodulation, and time-varying threshold detection using two independent 12-point profiles.

It supports three communication interfaces: time-command interface (TCI) on IO pin with 300 µs nominal bit period, asynchronous USART (2.4–131.5 kbps) on RXD/TXD, and synchronous USART (8 Mbps) on RXD/TXD/SCLK. Power management includes ultra-low quiescent current mode (<500 µA) with wake-on-command capability.

Key Specifications

Pinout & Package

TSSOP-16 package, 5.00 mm × 4.40 mm body size, 0.65 mm pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrasonic signal processing applications.

Compared with PGA460TPWQ1, TIDA-01385 provides a complete reference solution but lacks standalone part status, while MAX35103 offers lower integration and requires external processing - making PGA460TPWQ1 uniquely suited for AEC-Q100-compliant, self-contained ultrasonic sensing nodes requiring minimal host overhead.

Availability

PGA460TPWQ1 is available at Aetrix Electronics and suitable for automotive park assist, collision warning, and industrial proximity sensing requiring stable component supply across extended temperature ranges and long lifecycle commitments.

Supply support for PGA460TPWQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and communications markets.

The PGA460TPWQ1 belongs to TI's automotive ultrasonic sensing portfolio, designed specifically for AEC-Q100-compliant object detection systems requiring integrated driver, AFE, DSP, and diagnostics in a single chip.

FAQ

What is the maximum transducer excitation voltage achievable with PGA460TPWQ1?

The PGA460TPWQ1 does not directly generate high-voltage excitation. In transformer-coupled mode, it drives the primary side of a center-tap transformer (e.g., TDK B78416A2232A003) with up to 500 mA peak current and 30–480 kHz frequency, enabling secondary-side transducer voltages exceeding 30 Vpp depending on turns ratio. Direct-drive mode requires external high-side FETs and is limited by VPWR (max 28 V).

Does PGA460TPWQ1 support both single-transducer and dual-transducer configurations?

Yes, PGA460TPWQ1 supports both configurations. In single-transducer mode, it alternates burst and listen phases on the same element. In dual-transducer mode, OUTA drives the burst transducer while INP/INN receive echoes from a dedicated listen transducer - enabling simultaneous transmission and reception for improved update rate and directionality.

How does the PGA460TPWQ1 handle temperature drift in ultrasonic measurements?

The PGA460TPWQ1 integrates an on-die temperature sensor with ±5°C accuracy across –40°C to +125°C. This sensor data is accessible via register read and used by host firmware to compensate transducer decay time, gain profile, and threshold levels - ensuring consistent echo amplitude and TOF accuracy despite ambient thermal variation.

What diagnostic functions are implemented in the PGA460TPWQ1?

PGA460TPWQ1 provides comprehensive diagnostics including transducer decay time and resonant frequency measurement during burst, VPWR overvoltage/undervoltage detection (configurable thresholds), driver output short-circuit and overcurrent monitoring, and supply rail integrity checks for AVDD and IOREG regulators - all reported via status registers accessible through USART or TCI.

Can PGA460TPWQ1 operate in ultra-low-power mode while retaining configuration?

Yes, PGA460TPWQ1 supports ultra-low-power mode with <500 µA VPWR supply current. In this state, the core, AFE, and ADC are disabled, but the IOREG regulator remains active to sustain USART/TXD/RXD functionality. All configuration stored in 42-byte user EEPROM is retained, enabling full restoration within 10 ms upon wake command without host reprogramming.