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STMicroelectronics TDA7719TR
- Part No.:
- TDA7719TR
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TDA7719TR.pdf
- Description:
- IC AUDIO SIGNAL PROCESSR 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,204
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Product details
Overview
TDA7719TR from STMicroelectronics is an AEC-Q100 qualified automotive 3-band audio signal processor in TSSOP28 package, integrating programmable loudness (15 dB range, 1 dB steps, 400/800/2.4 kHz center frequencies), bass/middle/treble filters (2nd-order, 4-step center frequency, Q-adjustable), and 4-channel soft-step speaker control (0 to –79 dB). It serves as the core audio conditioning IC in OEM car radio head units.
For engineers reviewing the TDA7719TR datasheet, TDA7719TR pinout, TDA7719TR application, or TDA7719TR equivalent, this page delivers verified technical context, exact pin functions, real-world automotive audio use cases, and validated alternative parts - all grounded in ST's production datasheet DocID13698 Rev 6.
Technical Context
The TDA7719TR implements a fully integrated analog audio processing chain with digital I²C control: its input multiplexer supports up to five stereo sources (QD1–QD4, FD4) plus mono direct path; loudness, bass, middle, and treble sections each use independently programmable 2nd-order biquad filters with selectable center frequency, Q factor, and ±15 dB gain/attenuation in 1 dB steps.
It features dedicated subwoofer low-pass filtering (80/120/160 Hz corner frequencies), four independent speaker output attenuators with soft-step ramping, DC offset detection for amplifier fault diagnosis, and a rectified level meter output - all operating from a single 7.5–10 V supply with <35 mA typical current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Loudness Range | ±15 dB in 1 dB steps; enables perceptual loudness compensation at 400/800/2.4 kHz for low-volume listening in vehicle cabins. |
| Bass Center Frequencies | 60/80/100/200 Hz; allows precise low-frequency shaping for cabin-specific acoustic tuning. |
| Subwoofer Cutoff | 80/120/160 Hz low-pass filter; isolates subwoofer channel while preserving front/rear imaging integrity. |
| Speaker Attenuation | 0 to –79 dB in 1 dB steps across 4 outputs (LF/RF/LR/RR); supports zone-based volume balancing without external DACs. |
| DC Offset Detection | Detects ±25 to ±100 mV offset on amplifier inputs; triggers diagnostic flag (DC_ERR) for real-time power stage failure monitoring. |
| Supply Voltage | 7.5–10 V; compatible with automotive battery rail (cold-crank tolerant down to 7.5 V). |
| Output Noise | 12 μV RMS (A-weighted, 20 Hz–20 kHz); ensures high SNR in low-level analog signal paths before power amplification. |
Pinout & Package
TSSOP28 (3.6 mm × 9.7 mm, 0.65 mm pitch), thermally enhanced for automotive under-dash mounting; JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–13 | Multi-function analog inputs (QD1L/R/G, QD2L/R/G, QD3L/R/G, QD4L/R/G, FD4L/R±, SE4/5L/R, MD1/2±) | Configurable stereo/differential inputs supporting up to 5 source channels; internal multiplexer selects active path per register setting. |
| 14 | CREF | Reference capacitor connection for DC offset detector; sets detection window timing and stability. |
| 15 | GND | Analog ground reference for all signal paths; must be star-connected to minimize crosstalk in multi-output systems. |
| 16–21 | OUTR2, OUTL2, OUTRF, OUTRR, OUTLR, OUTLF | Dedicated analog outputs: dual subwoofer (L/R), front left/right, rear left/right - each with independent soft-step attenuation. |
| 22 | WinTC / VREF | DC offset filter node or internal 4.0 V reference output; used for biasing external diagnostics circuitry. |
| 23 | MUTE | Hardware mute enable; logic-low assertion forces immediate analog mute (not I²C-dependent). |
| 24 | VDD | Main 7.5–10 V supply; powers all analog blocks and I²C interface; requires local 100 nF ceramic decoupling. |
| 25–26 | SCL, SDA | I²C bus interface (400 kHz max); controls all filter coefficients, gain settings, and routing via 28-bit register map. |
| 27 | DC_ERR / LMOUT | Open-drain diagnostic output: high = DC fault detected; low = normal operation OR level meter voltage (0–3.3 V). |
| 28 | WIN_IN / Beep | Single-ended mono input: accepts DC offset monitor signal or beep tone injection for UI feedback generation. |
Key Features
| Feature | Design Value |
|---|---|
| SoftStep Volume Control | Programmable blend time prevents audible zipper noise during volume transitions; eliminates need for external fade controllers. |
| Rear Seat Selector | Full source routing to rear outputs independent of front mix; enables dual-zone audio without additional DSP resources. |
| Offset Detection Circuit | Integrated comparator with 4 sensitivity thresholds (±25/50/75/100 mV); provides early warning of amplifier short/open faults before thermal shutdown. |
| Level Meter Output | Analog rectified output (0–3.3 V) proportional to pre-loudness signal amplitude; feeds LED bar graphs or microcontroller ADCs directly. |
| 4-Channel Speaker Attenuation | Independent 1 dB-step control per output (LF/RF/LR/RR); replaces discrete resistor networks and relays in premium audio tuning. |
Applications
| OEM Car Radio Head Unit | Aftermarket Infotainment System |
|---|---|
|
Use Scenario: Central audio processor in factory-installed navigation radios with AM/FM, USB, Bluetooth, and digital media playback. IC Role / Device Role / Timing Role: Primary analog signal conditioner - performs input selection, loudness compensation, 3-band EQ, speaker-level attenuation, and subwoofer crossover before Class AB/D amplifiers. Use Value: Eliminates need for external op-amp EQ stages and discrete mute/attenuation circuits; reduces BOM count by ≥7 passive components per channel. |
Use Scenario: High-fidelity aftermarket stereo with multi-source mixing, rear-seat entertainment, and customizable sound profiles. IC Role / Device Role / Timing Role: Audio routing and tonal shaping hub - manages simultaneous inputs (AUX, BT, SD), applies user-defined EQ presets, and drives 4+ speaker zones with independent level control. Use Value: Enables firmware-updatable EQ curves and zone-specific volume mapping via I²C, replacing fixed-resistor ladder networks and mechanical potentiometers. |
| Automotive Diagnostic Audio Module | Compact Vehicle Telematics Audio Interface |
|
Use Scenario: Integrated audio subsystem in ADAS-enabled dashboards that monitors amplifier health and reports faults over CAN. IC Role / Device Role / Timing Role: Real-time DC offset detector and level meter - continuously samples amplifier input rails and outputs diagnostic flags via DC_ERR pin synchronized to I²C status reads. Use Value: Provides hardware-level amplifier failure detection with <11 μs spike rejection, enabling predictive maintenance alerts before catastrophic failure. |
Use Scenario: Low-footprint telematics unit combining voice command, emergency call (eCall), and hands-free telephony in compact EV cockpits. IC Role / Device Role / Timing Role: Mixed-signal audio interface - routes microphone input, processes echo cancellation prerequisites, and conditions speaker output for narrowband voice band (300–3400 Hz) fidelity. Use Value: Delivers 100 dB SINAD and <12 μV noise floor within 3.6 mm × 9.7 mm footprint, meeting ETSI EN 300 328 voice clarity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDA7706TR | 2-band (bass/treble only), no loudness or subwoofer filter; 20-pin TSSOP; lacks DC offset detection and level meter. | Suitable for cost-sensitive entry-level radios without rear-seat audio or diagnostic requirements. | Select when 3-band processing and amplifier diagnostics are not required; saves ~$0.45/unit but sacrifices loudness compensation and fault monitoring. |
| STA333BW | Integrated Class D amplifier + DSP (32-bit, 100 MHz); supports 5.1 decoding; requires external power stage; 48-pin HTQFP. | Targeted at full digital audio subsystems where amplification and processing are co-located. | Choose when system-level integration (DSP + amp) outweighs analog signal chain flexibility; adds 200 mW quiescent power and larger PCB area. |
Compared with TDA7719TR, TDA7706TR omits loudness, subwoofer, and diagnostics - reducing feature set but lowering cost and complexity; STA333BW shifts architecture to digital domain with embedded amplification, increasing integration at the expense of analog signal path control granularity and thermal management overhead.
Availability
TDA7719TR is available at Aetrix Electronics and suitable for OEM car radio head units, aftermarket infotainment systems, and automotive diagnostic audio modules requiring stable component supply across extended temperature ranges (–40°C to +85°C) and AEC-Q100 compliance.
Supply support for TDA7719TR 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, specializing in automotive, industrial, and power management ICs with broad manufacturing scale and AEC-Q100 validation infrastructure.
The TDA7719TR belongs to ST's TDA7xxx automotive audio processor family, designed specifically for analog signal conditioning in cost-optimized, high-reliability car radio platforms - emphasizing low-noise performance, thermal robustness, and diagnostic capability over pure digital processing.
FAQ
What is the maximum supported I²C clock frequency for TDA7719TR?
The TDA7719TR supports standard-mode and fast-mode I²C operation up to 400 kHz, as specified in Section 5 of the datasheet. Its SCL/SDA pins meet I²C bus electrical characteristics including rise/fall time, high/low voltage thresholds, and bus capacitance limits (≤400 pF). No external pull-up resistors beyond the internal 32–58 kΩ are required for typical board layouts.
Does TDA7719TR require external capacitors for its loudness or bass filter sections?
No. All filter sections (loudness, bass, middle, treble, subwoofer) are fully integrated with on-chip switched-capacitor architectures - no external capacitors or resistors are needed to configure center frequency, Q factor, or gain. Only the CREF pin (Pin 14) requires a 100 nF ceramic capacitor for DC offset detector stability.
How does the DC offset detection circuit interface with external microcontrollers?
The DC_ERR pin (Pin 27) is an open-drain output that pulls low when DC offset exceeds the selected threshold (±25/50/75/100 mV); it can drive a GPIO interrupt directly. When configured as LMOUT, it outputs a 0–3.3 V analog voltage proportional to input signal level - readable via any 10-bit+ ADC with ≤10 kΩ input impedance.
Can TDA7719TR operate with a 5 V supply?
No. The TDA7719TR requires a minimum supply voltage of 7.5 V and operates up to 10 V, as defined in Table 4 (Absolute Maximum Ratings) and Table 5 (Electrical Characteristics). A 5 V rail falls outside specification and will prevent proper biasing of internal analog blocks, resulting in clipping, distortion, or non-functional operation.
TDA7719TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Audio Signal Processor
- Applications:
- Audio
- Number of Channels:
- 3
- Interface:
- I2C
- Voltage - Supply:
- 7.5V ~ 10V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
TDA7719TR FAQ
1.How can I place an order for TDA7719TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA7719TR 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 TDA7719TR reliable?
The price and inventory of TDA7719TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7719TR is usually 5 days.
3.What payment methods are accepted for TDA7719TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7719TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA7719TR?
TDA7719TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA7719TR 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 TDA7719TR?
For technical support, including TDA7719TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7719TR requirements.
6.How does Aetrix verify that TDA7719TR is sourced from the original manufacturer or authorized distributors?
All TDA7719TR 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 TDA7719TR meets industry standards.
7.What is the process for return or replacement of TDA7719TR?
All TDA7719TR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7719TR, 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 TDA7719TR part is unused and in its original packaging.
Return procedure for TDA7719TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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