My Inquiry
My Account
STMicroelectronics TDA7528TR
- Part No.:
- TDA7528TR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 64-LQFP
- Datasheet:
-
TDA7528TR.pdf
- Description:
- RF RX AM/FM 50KHZ-108MHZ 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,813
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TDA7528TR from STMicroelectronics is a highly integrated FM/AM car-radio front-end IC for IF-sampling architectures, featuring dual VCO-based PLL tuning, 10.7 MHz IF output, and support for AM (LW/MW/SW), FM (EU/US/Japan/OIRT), Weather Band, HD-Radio, and DRM standards. It integrates AM preamplifier, FM dual-input mixer with high image rejection, AGC-controlled IF amplifier with four inputs, and fully electronic I²C/SPI control.
For engineers reviewing the TDA7528TR datasheet, TDA7528TR pinout, TDA7528TR application, or TDA7528TR equivalent, this device serves as a complete RF-to-IF signal chain solution in automotive infotainment systems requiring multi-standard broadcast reception, phase diversity, and background tuner capability.
Technical Context
The TDA7528TR implements a single superheterodyne architecture with fixed 10.7 MHz IF, separating AM (≤30 MHz) and FM (>30 MHz) signal paths via dedicated IMR mixer stages. Its dual-VCO PLL supports world-wide tuning without frequency overlap and enables phase diversity or simultaneous dual-tuner operation.
It integrates analog front-end functions including switchable 4th-order LPF for AM, active baluns, temperature-compensated AGC loops for FM/AM/IF sections, and programmable DACs for VCO tuning and mixer alignment - all controlled via configurable I²C/SPI registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF Frequency | 10.7 MHz fixed - enables standardized ceramic filter selection and digital backend compatibility (e.g., STA3004/STA3005). |
| Frequency Range | 50 kHz–163 MHz - covers AM (LW/MW/SW), FM (EU/US/Japan/OIRT), US Weather Band (162.4–162.55 MHz), and DRM/HD-Radio bands. |
| FM Mixer Input | Dual independent inputs - allows optimization for noise figure (low-noise path) or linearity (high-IP3 path) in front-end circuit design. |
| IF Amplifier Inputs | Four selectable inputs - supports connection of up to four ceramic IF filters for flexible channel selection and diversity switching. |
| Control Interface | I²C and SPI - provides dual-protocol flexibility for integration into legacy (I²C) or high-speed (SPI) microcontroller-based tuner control systems. |
| PLL Architecture | Dual VCO with independent dividers - enables true phase diversity or concurrent dual-frequency reception without hardware duplication. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with automotive 3.3 V rail systems and supports low-power standby modes. |
Pinout & Package
LQFP64 package (10 × 10 × 1.4 mm) with exposed thermal pad - optimized for automotive PCB thermal management and EMI shielding in radio head units.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA, VDDD | Analog/Digital supply | Separate 3.3 V rails minimize digital noise coupling into sensitive RF/IF analog paths. |
| RF_AM_IN, RF_FM_IN1/2 | AM/FM RF inputs | Dedicated differential inputs enable optimal front-end matching for each band; FM dual-input supports noise/IP3 trade-off selection. |
| IF_OUTP/N | Differential IF output | 10.7 MHz differential output drives ADC input of digital backend (e.g., STA3004) with robust common-mode rejection. |
| SCL/SDA, SCLK/MOSI/MISO/CS | I²C/SPI control | Hardware-selectable interface mode allows reuse of existing MCU peripherals without protocol conversion logic. |
| VCO1_OUT/VCO2_OUT | Dual VCO outputs | Independent VCO signals feed separate mixer LO paths - essential for phase-diverse or dual-tuner configurations. |
| AGC_FM/AGC_AM/AGC_IF | Analog AGC monitor outputs | Enable external monitoring or closed-loop system-level gain control; voltage/current modes configurable per section. |
Key Features
| Feature | Design Value |
|---|---|
| World-wide tuning capability | Single device supports all regional AM/FM/Weather/DRM/HD-Radio bands via software-configurable PLL dividers and band-switching logic. |
| Phase diversity ready | Dual independent VCOs and mixers allow coherent signal combining from two antennas - improves multipath immunity in moving vehicles. |
| Multi-tuner architecture support | Configurable GPIOs and register-mapped control enable background scanning or dual-channel demodulation without additional ICs. |
| Integrated AM preamp + LPF | Reduces BOM count and board space for cost-sensitive AM-only or hybrid AM/FM designs; eliminates external tank components. |
| Programmable IF AGC gain range | Four-input IF amplifier with digitally adjustable gain and AGC time constants enables dynamic adaptation to varying signal strength and interference conditions. |
Applications
| Automotive Infotainment Head Unit | Dual-Tuner Radio Receiver |
|---|---|
|
Use Scenario: Integrated car audio system receiving AM/FM/HD-Radio/DRM broadcasts while supporting Bluetooth streaming and navigation audio routing. IC Role / Device Role / Timing Role: Front-end RF-to-IF converter providing digitizable 10.7 MHz output to STA3004/STA3005 backend; handles all analog signal conditioning and frequency synthesis. Use Value: Eliminates discrete tuner modules; reduces component count by >40% versus discrete solutions while enabling software-defined band switching. |
Use Scenario: Premium vehicle radio supporting simultaneous main-band listening and background station scanning for traffic alerts or RDS updates. IC Role / Device Role / Timing Role: Dual-path front-end with independent VCOs and mixers - one path locked to primary station, second path scanning alternate frequencies. Use Value: Enables zero-interruption background tuning; no loss of current audio during station search due to hardware-level parallelism. |
| Phase Diversity Tuner | HD-Radio/DRM-Compatible Receiver |
|
Use Scenario: Urban driving environment with severe multipath fading on FM band, requiring robust signal recovery. IC Role / Device Role / Timing Role: Generates two phase-coherent IF outputs from spatially separated antennas; enables vector combining in digital backend. Use Value: Improves FM SNR by ≥8 dB in urban canyons; maintains stereo decoding integrity where single-antenna receivers fail. |
Use Scenario: Next-generation broadcast receiver supporting hybrid analog/digital transmission (HD-Radio IBOC or DRM) in same hardware platform. IC Role / Device Role / Timing Role: Wideband front-end (50 kHz–163 MHz) with flat gain response and low distortion - preserves digital sideband integrity for downstream OFDM demodulation. Use Value: Single hardware design supports global regulatory transitions; avoids costly redesign when regional broadcast standards evolve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar car-radio front-end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si4790x series (Skyworks) | Software-defined radio architecture with integrated DSP; requires external IF filter; no dual-VCO hardware diversity. | Targets lower-BOM-cost consumer radios; lacks native phase diversity support and automotive AEC-Q100 qualification. | Prefer for non-automotive portable radios where software flexibility outweighs hardware diversity needs. |
| MAX2180A (Maxim Integrated) | Single-VCO tuner; supports only FM/AM/Weather; no DRM/HD-Radio bandwidth or dual-input FM mixer. | Designed for entry-level automotive radios; limited to analog-only broadcast standards and lacks background scan capability. | Choose when cost sensitivity dominates and digital broadcast support is not required. |
Compared with Si4790x and MAX2180A, the TDA7528TR uniquely delivers hardware-enforced phase diversity, dual-VCO concurrency, and full multi-standard coverage (including DRM/HD-Radio) in a single AEC-Q100-qualified IC - making it the only option for premium automotive tuners requiring zero-latency background scanning and multipath resilience.
Availability
TDA7528TR is available at Aetrix Electronics and suitable for automotive infotainment head units, dual-tuner radio receivers, and HD-Radio/DRM-compatible broadcast systems requiring stable component supply across extended production lifecycles.
Supply support for TDA7528TR 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 specializing in automotive-grade analog, power, and microcontroller solutions, with over 30 years of automotive electronics experience and broad AEC-Q100 product portfolio.
The TDA7528TR belongs to ST's automotive radio front-end product line, designed specifically to replace discrete tuner architectures in cost- and performance-sensitive car audio systems while enabling next-generation broadcast standards.
FAQ
What is the recommended power supply decoupling scheme for TDA7528TR?
Use separate 100 nF ceramic capacitors placed within 2 mm of each VDDA and VDDD pin, plus a shared 4.7 µF tantalum capacitor near the LQFP64 exposed pad. Ground vias must connect directly to inner ground plane under the thermal pad to ensure low-impedance return paths for RF and IF sections.
Does TDA7528TR support automatic antenna diversity switching?
No - antenna diversity is implemented at the system level using external RF switches controlled by the host MCU. The TDA7528TR provides two independent IF outputs and synchronized VCO control signals to enable coherent combining, but does not include built-in RF switching or antenna detection circuitry.
Can TDA7528TR be used with a 12-bit ADC instead of STA3004/STA3005?
Yes - its differential 10.7 MHz IF output meets standard AC-coupled ADC interface requirements. However, full HD-Radio/DRM compliance requires ≥14-bit ENOB and ≥60 MSPS sampling; verify SNR, SFDR, and jitter specs against your selected ADC's datasheet before final layout.
Is the exposed thermal pad on LQFP64 electrically connected internally?
No - the exposed pad is thermally conductive only and must be soldered to a PCB copper pour tied to ground for heat dissipation. Electrical connection to ground is recommended but not mandatory; floating pad degrades thermal performance by >35% and risks long-term reliability in automotive environments.
TDA7528TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Frequency:
- 50kHz ~ 108MHz, 161MHz ~ 163MHz
- Sensitivity:
- -
- Data Rate (Max):
- -
- Modulation or Protocol:
- AM, FM
- Applications:
- Audio
- Current - Receiving:
- 175mA
- Data Interface:
- PCB, Surface Mount
- Memory Size:
- -
- Antenna Connector:
- -
- Features:
- -
- Voltage - Supply:
- 3.3V, 5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (10x10)
TDA7528TR FAQ
1.How can I place an order for TDA7528TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7528TR 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 TDA7528TR reliable?
The price and inventory of TDA7528TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7528TR is usually 5 days.
3.What payment methods are accepted for TDA7528TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7528TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7528TR?
TDA7528TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7528TR 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 TDA7528TR?
For technical support, including TDA7528TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7528TR requirements.
6.How does Aetrix verify that TDA7528TR is sourced from the original manufacturer or authorized distributors?
All TDA7528TR 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 TDA7528TR meets industry standards.
7.What is the process for return or replacement of TDA7528TR?
All TDA7528TR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7528TR, 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 TDA7528TR part is unused and in its original packaging.
Return procedure for TDA7528TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDA7528TR Tags
-
MICRF220AYQS-TR
Microchip Technology
-
SX1239IMLTRT
Semtech Corporation
-
SI4356-B1A-FMR
Silicon Labs
-
SI4362-C2A-GMR
Silicon Labs
-
MAX1473EUI+T
Analog Devices Inc./Maxim Integrated
-
CMX992Q3
CML Micro
-
CMX994AQ4
CML Micro
-
MAX2112ETI+
Analog Devices Inc./Maxim Integrated
-
MAX2112ETI+T
Analog Devices Inc./Maxim Integrated
-
TESEO-LIV3R
STMicroelectronics
-
M20048-1
Antenova
-
CMX994EQ4
CML Micro
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
