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NXP Semiconductors TEF6892H/V3,518
- Part No.:
- TEF6892H/V3,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Audio Special Purpose
- Package:
- 44-QFP
- Datasheet:
-
TEF6892H/V3,518.pdf
- Description:
- IC AUDIO TONE PROCESSOR 44PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,284
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Product details
Overview
TEF6892H/V3,518 from NXP Semiconductors (formerly Philips Semiconductors) is a monolithic BiMOS car radio integrated signal processor for FM/AM stereo decoding, RDS/RBDS demodulation and decoding, weak signal processing, and full audio tone/volume control. It operates from 8–9 V, delivers 75 dB S/N ratio, supports 50/75 µs de-emphasis, and integrates I²C-bus programmable noise blanking for automotive radio front-ends.
For engineers reviewing the TEF6892H/V3,518 datasheet, TEF6892H/V3,518 pinout, TEF6892H/V3,518 application, or TEF6892H/V3,518 equivalent, this device serves as a complete analog baseband signal processor in OEM automotive infotainment systems requiring high immunity to ignition noise, multipath distortion, and RDS data integrity without external crystal or discrete filtering components.
Technical Context
The TEF6892H/V3,518 implements a dual-path architecture: one MPX path (FMMPX) for stereo decoding and audio processing, and a second dedicated MPX path (MPXRDS) feeding both RDS demodulation and FM weak signal detection. Its stereo decoder uses a digitally assisted PLL with 75.4 kHz reference input from TEA684x tuner ICs to regenerate 38 kHz subcarrier and suppress pilot tone by >40 dB.
Weak signal logic combines three independent detectors-level voltage (RF strength), Ultrasonic Noise (USN), and Wideband AM (WAM)-each with programmable sensitivity and attack/decay timing. Control outputs (FMSNC, AMFMHCC, soft mute) are dynamically adjusted via I²C-bus registers and held during AF update cycles to prevent audio artifacts during frequency search.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 8.0–9.0 V - Enables direct connection to automotive battery rail with minimal regulation overhead. |
| Signal-to-Noise Ratio | 75 dB - Measured over 20 Hz–15 kHz, ensuring clean audio output in noisy vehicle environments. |
| Channel Separation | 40 dB at 1 kHz - Guarantees stereo imaging fidelity without external compensation networks. |
| I²C-Bus Speed | 400 kHz Fast Mode - Supports real-time audio parameter updates and RDS status polling without bus contention. |
| Volume Control Range | +20 dB to −79 dB in 1 dB steps - Covers full dynamic range from line-level boost to deep mute across all four audio outputs. |
| RDS Reference Input | 75.361–75.375 kHz - Eliminates need for external crystal; synchronized directly to TEA684x tuner IC reference. |
| De-emphasis Options | Selectable 50 µs or 75 µs - Matches regional broadcast standards (e.g., US FM vs. EU FM) via register write. |
Pinout & Package
TEF6892H/V3,518 is housed in a QFP44 package (SOT307-2), measuring 10 × 10 × 1.75 mm, with 1.3 mm lead length and standard surface-mount footprint optimized for automotive PCB layout density and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FMMPX (Pin 5) | FM MPX signal input for stereo decoding and audio processing | Primary audio path; gain programmable in 0–23.5 dB steps to match tuner output level. |
| MPXRDS (Pin 6) | FM MPX signal input for RDS demodulation and weak signal detection | Dedicated path with 100 kHz high-pass filter; feeds USN detector and RDS clock recovery. |
| AM (Pin 7) | AM audio input | Direct analog input for AM band processing; enables shared noise blanker and soft mute logic. |
| SCL / SDA (Pins 43 / 42) | I²C-bus master interface | 400 kHz capable; supports address selection (ADDR, Pin 44) and gated bus pass-through to tuner IC. |
| LFOUT / RFOUT / LROUT / RROUT (Pins 27–30) | Four-channel audio outputs | Full differential-capable outputs supporting front/rear fader, balance, and per-channel mute without external amplifiers. |
| NAV (Pin 32) | Navigation voice signal input | Low-latency auxiliary input mixed into any output channel; supports hands-free voice guidance overlay. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RDS/RBDS decoder | On-chip block synchronization, error correction, and flywheel function; stores two RDS data blocks accessible via I²C. |
| Audio Step Interpolation (ASI) | Programmable smoothing for volume, bass, treble, fader, and mute transitions - eliminates audible pops during parameter changes. |
| Gated I²C-bus loop-through | Enables daisy-chaining with tuner ICs (e.g., TEA684x); reduces PCB crosstalk and allows mixed 100/400 kHz bus segments. |
| Weather band de-emphasis | Configurable 50/75 µs response plus dedicated gain setting (23.5 dB) for WX band reception without hardware change. |
| Dynamic weak signal processing | Real-time fusion of LEVEL, USN, and WAM detectors drives stereo blend (FMSNC), high-cut control (AMFMHCC), and soft mute with hold during AF update. |
Applications
| FM/AM Automotive Radio Head Unit | RDS-Enabled Infotainment System |
|---|---|
Use Scenario: OEM dashboard-mounted radio with digital tuning, station presets, and traffic announcement support. IC Role / Device Role / Timing Role: Central analog baseband processor handling MPX decoding, RDS extraction, audio conditioning, and navigation voice mixing. Use Value: Eliminates need for discrete op-amps, filters, and RDS demodulator ICs - reduces BOM count by ≥12 components and PCB area by 35%. | Use Scenario: Aftermarket car stereo with real-time traffic message channel (TMC) and alternative frequency (AF) switching. IC Role / Device Role / Timing Role: RDS data pipeline controller with flywheel hold, AF mute coordination, and seamless audio continuity during frequency handover. Use Value: ASI-enabled mute timing ensures zero-audible-gap transitions during AF search; RDS block sync guarantees <100 ms data lock. |
| Ignition-Noise-Robust Audio Front-End | Multi-Source Car Audio Hub |
Use Scenario: Commercial fleet vehicle radio exposed to diesel engine EMI and alternator ripple. IC Role / Device Role / Timing Role: Dual-path noise blanker (FM/AM) with adaptive sensitivity, triggered by slew-rate and high-frequency spike detection. Use Value: Achieves >24 dB PSRR at 100 Hz and suppresses ignition pulses ≥15 µs (FM) or ≥200 µs (AM) without microcontroller intervention. | Use Scenario: Premium vehicle audio system integrating CD, tape, phone, and AM/FM sources with rear-seat entertainment. IC Role / Device Role / Timing Role: Four-input selector with loudness compensation, 4-channel fader/mute, and NAV overlay mixer. Use Value: Single-chip solution supports independent left/right front/rear attenuation (0–−59 dB) and beep/NAV insertion on any output - no external mixers required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar car radio signal processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TEF6893H/V3,518 | Same pinout and register map; adds enhanced weather band support and improved USN/WAM detector SNR. | Required for WX band certification in North America; otherwise identical functional coverage. | Select when weather band compliance is mandatory; drop-in replacement otherwise. |
| SAF7741HN/V1,518 | Successor generation with integrated ADC/DAC, DSP core, and CAN interface; not pin-compatible. | Targets next-gen digital radios with software-defined audio processing and vehicle network integration. | Choose for new designs requiring firmware-upgradable features; not suitable for legacy TEF6892H board reuse. |
Compared with TEF6892H/V3,518, the TEF6893H/V3,518 offers identical functionality with minor detector enhancements, while the SAF7741HN/V1,518 replaces analog signal processing with a programmable digital architecture - making it unsuitable for direct replacement but ideal for scalable future platforms.
Availability
TEF6892H/V3,518 is available at Aetrix Electronics and suitable for automotive infotainment systems, OEM radio head units, and RDS-enabled navigation audio subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TEF6892H/V3,518 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep heritage in automotive analog signal processing dating to Philips Semiconductors.
The TEF6892H/V3,518 belongs to NXP's legacy car radio signal processor family, designed specifically to integrate stereo decoding, RDS, noise suppression, and multi-source audio control into a single BiMOS IC for cost-sensitive, high-reliability automotive audio systems.
FAQ
What is the primary function of the TEF6892H/V3,518 in an automotive radio system?
The TEF6892H/V3,518 serves as the central analog baseband signal processor in automotive FM/AM radios. It performs stereo MPX decoding, RDS/RBDS demodulation and decoding, adaptive noise blanking, weak signal processing (USN/WAM/LEVEL), and full four-channel audio tone/volume control - all within a single QFP44 package. The TEF6892H/V3,518 eliminates the need for multiple discrete ICs in the audio signal chain while maintaining compatibility with NXP's TEA684x tuner family.
Does the TEF6892H/V3,518 require an external crystal for RDS operation?
No, the TEF6892H/V3,518 does not require an external crystal for RDS operation. It derives its 75.361–75.375 kHz reference frequency directly from the connected TEA684x tuner IC via the FREF pin (Pin 11). This synchronous clocking eliminates crystal cost, board space, and frequency drift concerns, and is explicitly confirmed in Section 1.6 and 7.7.1 of the datasheet.
How does the TEF6892H/V3,518 handle audio transitions to avoid popping noise?
The TEF6892H/V3,518 implements Audio Step Interpolation (ASI) on volume/balance, loudness, treble, bass, fader, and mute functions. ASI smoothes parameter changes by interpolating gain steps over programmable time intervals (four selectable durations), preventing abrupt voltage jumps that cause audible pops. This feature is active by default and controllable via I²C-bus registers (Subaddress 12H–13H, 17H–1FH), as detailed in Section 7.6.7 and Fig. 23 of the datasheet.
Can the TEF6892H/V3,518 process weather band (WX) signals?
Yes, the TEF6892H/V3,518 supports weather band reception through dedicated configuration: the FMMPX input gain can be set to +23.5 dB (ING[1:0] = 11) for WX band, and de-emphasis is configurable for 50 µs or 75 µs - matching WX broadcast standards. Weather band mode is explicitly referenced in Sections 7.1 and 7.3, and the 23.5 dB gain setting is verified in Table 61 under "ING[1:0] = 11; FMMPX".
What are the power supply requirements and current consumption of the TEF6892H/V3,518?
The TEF6892H/V3,518 operates from a single 8.0–9.0 V supply (VCC), compatible with automotive battery rails. Typical supply current is 28 mA in normal mode, 24 mA in standby with RDS active/audio on, 19 mA with audio off/RDS on, and 15 mA in full standby. These values are measured at VCC = 8.5 V and Tamb = 25 °C, and are specified in Section 4 (Quick Reference Data) and Section 10 (Characteristics) of the datasheet.
TEF6892H/V3,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 44-QFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Audio Tone Processor
- Applications:
- Audio
- Number of Channels:
- 6
- Interface:
- I2C
- Voltage - Supply:
- 8V ~ 9V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Specifications:
- AM, FM
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
TEF6892H/V3,518 FAQ
1.How can I place an order for TEF6892H/V3,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for TEF6892H/V3,518 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 TEF6892H/V3,518 reliable?
The price and inventory of TEF6892H/V3,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEF6892H/V3,518 is usually 5 days.
3.What payment methods are accepted for TEF6892H/V3,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEF6892H/V3,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TEF6892H/V3,518?
TEF6892H/V3,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEF6892H/V3,518 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 TEF6892H/V3,518?
For technical support, including TEF6892H/V3,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEF6892H/V3,518 requirements.
6.How does Aetrix verify that TEF6892H/V3,518 is sourced from the original manufacturer or authorized distributors?
All TEF6892H/V3,518 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 TEF6892H/V3,518 meets industry standards.
7.What is the process for return or replacement of TEF6892H/V3,518?
All TEF6892H/V3,518 units undergo pre-shipment inspection (PSI). If there is an issue with TEF6892H/V3,518, 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 TEF6892H/V3,518 part is unused and in its original packaging.
Return procedure for TEF6892H/V3,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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