Overview
The TEF6903AH/V2,557 is a single-chip integrated car radio IC developed by NXP Semiconductors. This component is designed to provide a comprehensive solution for car radio systems, integrating multiple functionalities into a single chip. It supports FM/AM tuning, stereo decoding, weak signal processing, and advanced audio processing. The chip also includes a Radio Data System (RDS)/Radio Broadcast Data System (RBDS) demodulator for radio data reception. Although the TEF6903AH/V2,557 is no longer in production, it remains a significant example of integrated car radio technology.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | Analog supply voltage | 8 | 8.5 | 9 | V |
| Supply Current in FM Mode (ICC) | Total supply current inclusive | - | - | 102 | mA |
| Supply Current in AM Mode (ICC) | Total supply current inclusive | - | - | 89 | mA |
| AM Tuning Frequency | LW, MW, SW | 144 kHz - 288 kHz (LW) | 522 kHz - 1710 kHz (MW) | 2.3 MHz - 26.1 MHz (SW) | kHz / MHz |
| Sensitivity Voltage | fRF = 990 kHz; m = 0.3; fmod = 1 kHz; BAF = 2.15 kHz; (S+N)/N = 26 dB | - | - | 50 µV | µV |
| Signal-to-Noise Ratio (S/N) | Ultimate signal-to-noise ratio | 54 | 58 | - | dB |
| Total Harmonic Distortion (THD) | 200 µV < VRF < 1 V; m = 0.8; fAF = 400 Hz | 0.4 | 1 | % | |
| Operating Temperature | - | -40°C | - | 85°C | °C |
| Package | - | - | - | 80-QFP (14x14) | - |
Key Features
- Integrated FM/AM tuner with double conversion for both IF1 and IF2 frequencies.
- Support for US FM, Europe FM, Japan FM, and Eastern Europe FM, as well as Long Wave (LW), Medium Wave (MW), and full range Short Wave (SW) bands.
- RDS/RBDS radio data demodulator for radio data reception.
- Multiplex (MPX) stereo decoder and integrated audio processing with tone filtering.
- Treble, bass, and loudness tone control, along with 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 and Compact Disc (CD) dynamics compression.
- Volume Unit (VU)-meter audio level read-out.
- Programmable AGC threshold and keyed AGC function via the I2C-bus.
Applications
- AM/FM car radio receivers.
- Automotive audio systems requiring integrated radio and audio processing.
- Systems needing RDS/RBDS data reception and processing.
- Applications requiring flexible audio input source selection and advanced tone control.
Q & A
- What is the TEF6903AH/V2,557?
The TEF6903AH/V2,557 is a single-chip integrated car radio IC developed by NXP Semiconductors.
- What are the key functionalities of the TEF6903AH/V2,557?
It includes FM/AM tuning, stereo decoding, weak signal processing, and advanced audio processing, along with RDS/RBDS demodulation.
- What are the supported frequency bands for FM and AM?
It supports US FM, Europe FM, Japan FM, and Eastern Europe FM, as well as Long Wave (LW), Medium Wave (MW), and full range Short Wave (SW) bands.
- What is the supply voltage range for the TEF6903AH/V2,557?
The supply voltage range is 8 V to 9 V.
- What is the maximum supply current in FM mode?
The maximum supply current in FM mode is 102 mA.
- What is the operating temperature range for the TEF6903AH/V2,557?
The operating temperature range is -40°C to 85°C.
- What package type is used for the TEF6903AH/V2,557?
The package type is 80-QFP (14x14).
- Is the TEF6903AH/V2,557 RoHS compliant?
Yes, certain versions of the TEF6903AH/V2,557 are RoHS compliant and lead-free.
- What are some of the audio features of the TEF6903AH/V2,557?
It includes treble, bass, and loudness tone control, volume, balance, fader, and input gain control, as well as Audio Step Interpolation (ASI) for pop-free function and CD dynamics compression.
- Is the TEF6903AH/V2,557 still in production?
No, the TEF6903AH/V2,557 is no longer manufactured by NXP Semiconductors.
