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TEF6903A
General description
The TEF6903A is a single chip car radio integrated circuit with FM/AM tuner, stereo decoder, weak signal processing and audio processing. Radio Data System (RDS)/Radio Broadcast Data System (RBDS) demodulator for radio data reception is included.
FM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz with integrated image rejection for both IF1 and IF2; integrated channel filter with variable bandwidth control; capable of US FM, Europe FM, Japan FM and Eastern Europe FM. AM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz; capable of Long Wave (LW), Medium Wave (MW) and full range Short Wave (SW) (11 m to 120 m bands).
Multiplex (MPX) stereo decoder, ignition noise blanker and extensive weak signal processing.
Audio processing with flexible source selection, volume, balance, fader, input gain control and inaudible tuning mute. The application of an external processor is possible. Integrated audio filters for bass and treble and loudness control function.
The device can be controlled via the fast-mode I2C-bus (400 kHz) and includes autonomous tuning functions for easy control without microcontroller timing. No manual alignments are required.
Features
- FM Radio Frequency (RF) front-end with large dynamic range
- Integrated FM channel filter with controlled bandwidth
- Fully integrated FM demodulator
- Fully integrated stereo decoder with high immunity for birdy noise
- FM noise blanker with adaptive detection at MPX and level
- Signal quality detection: level, AM wideband, frequency deviation, ultrasonic noise/adjacent channel
- FM weak signal processing: stereo blend, high cut control and soft mute
- AM RF Automatic Gain Control (AGC) control circuit for external cascode AGC and PIN diode AGC
- Dual AM noise blanking system
- AM weak signal processing: high cut control and soft mute
- Low phase noise local oscillator
- In-lock detection for optimized adaptive Phase-Locked Loop (PLL) tuning speed
- Crystal oscillator reference with low harmonics
- Inaudible soft slope tuning mute for AM and FM
- Sequential state machine supporting each tuning action
- Integrated RDS/RBDS radio data demodulator
- Flexible audio input source selection
- Integrated audio processing and tone filtering
- Treble, bass and loudness tone control
- Volume, balance, fader and input gain control
- Optional connection of external sound processor, navigation voice or beep input
- Audio controls with Audio Step Interpolation (ASI) for pop-free function
- Compact Disc (CD) dynamics compression
- Volume Unit (VU)-meter audio level read-out
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| TEF6903AH/V2 | TEF6903AH/V2-T | 9352 812 01518 | Volume production | SOT496-1
(QFP80) | Reel Dry Pack, SMD, 13" | Standard Marking | TEF6903AH/V2
| Always Pb-free |
| TEF6903AH/V2 | TEF6903AH/V2 | 9352 812 01557 | Volume production | SOT496-1
(QFP80) | Tray Dry Pack, Bakeable, Multiple | Standard Marking | TEF6903AH/V2
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| TEF6903AH/V2 | 9352 812 01518 | Order samples | ||||||
| TEF6903AH/V2 | 9352 812 01557 | not available |
Parametrics/similar products
| Type number | Package | THD(%) | Sensitivity(mV/V / kA/m) | Signal-to-noise ratio (weighted) AM(dB) | Signal-to-noise ratio (weighted) FM(dB) |
|---|---|---|---|---|---|
| TEF6903AH/V2 | SOT496-1
(QFP80) | 0.5 | 2 µV (FM) / 50µV (AM) | 58 | 63 |
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