STMicroelectronics STA3005TR

Overview

STA3005TR from STMicroelectronics is a dual-IF AM/FM/HD radio receiver IC integrating two 5-bit Σ∆ IF ADCs, two 16-bit stereo audio ADCs, two 24-bit stereo DACs with 5-bit analog volume control, RDS processor, and dual-core architecture (24-bit DSP-EMERALD @ 116 MIPS + 32-bit ARM7TDMI @ 58 MIPS) for automotive and consumer digital radio platforms.

For engineers reviewing the STA3005TR datasheet, STA3005TR pinout, STA3005TR application, or STA3005TR equivalent, key selection considerations include dual-IF signal processing capability, integrated RDS decoding, programmable audio filtering, on-chip clock generation for front-end ICs, and support for SAI/SPDIF/IBOC/DRM digital interfaces in compact TQFP144 packaging.

Technical Context

The STA3005TR implements a fully programmable dual-IF architecture with dynamically variable channel filtering, enabling simultaneous AM/FM/HD reception and digital diversity combining. Its DSP-EMERALD subsystem handles real-time IF processing, audio filtering, sample rate conversion, and RDS decoding using dedicated 64 kB PROM and 64 kB PRAM.

The integrated ARM7TDMI core manages system control, peripheral coordination (DMA, UART, SPI2, I²C, GPIO), and host interface handling, while the on-board crystal oscillator and PLL generate precise clock references for external front-end ICs and internal digital blocks.

Key Specifications

Pinout & Package

TQFP144 package with 0.5 mm pitch, 20 mm × 20 mm body, 1.0 mm height, and exposed thermal pad on underside for enhanced heat dissipation in high-density radio modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-IF digital radio receiver applications.

Compared with STA3005TR, STA330ST reduces integration depth and eliminates digital diversity, while Si2168-B30 shifts audio processing off-chip-making STA3005TR uniquely suited for space-constrained, high-integration digital radio systems requiring full IF-to-speaker capability.

Availability

STA3005TR is available at Aetrix Electronics and suitable for automotive infotainment systems, HD Radio broadcast receivers, and portable digital radio platforms requiring stable component supply and long-term lifecycle support.

Supply support for STA3005TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management, sensors, and automotive-grade silicon.

The STA3005TR belongs to ST's Audio & Radio Processor product line, engineered specifically for high-fidelity, software-defined digital radio systems requiring integrated IF processing, RDS, HD Radio, and multi-interface audio transport.

FAQ

What is the primary function of the DSP-EMERALD core in the STA3005TR?

The DSP-EMERALD core executes real-time IF signal processing-including digital mixing, channel filtering, demodulation, RDS decoding, and audio enhancement-using its 116 MIPS throughput and dedicated 64 kB PROM/PRAM. It operates independently from the ARM7 subsystem, enabling concurrent radio and system control tasks without resource contention.

Does the STA3005TR support HD Radio™ transmission standards?

No-the STA3005TR supports HD Radio™ *reception* only, including IBOC (In-Band On-Channel) demodulation and decoding of hybrid analog/digital broadcasts. It does not implement HD Radio transmitter functions or RF power amplification; it processes baseband IF signals from external HD Radio tuners.

How is clock synchronization handled between the STA3005TR and external front-end ICs?

The STA3005TR generates precise clock references internally via its on-board crystal oscillator and PLL, delivering synchronized clock outputs (e.g., CLK_OUT, REF_CLK) to external front-end ICs. This eliminates need for separate clock generators and ensures phase-coherent sampling across the signal chain.

Can the ARM7 subsystem be used for custom application firmware development?

Yes-the ARM7TDMI core provides 38 kB of program RAM and 26 kB of ROM, along with full JTAG/ETM7 debug support, enabling developers to run custom firmware for UI control, system monitoring, peripheral management, and host communication without modifying the DSP firmware.