Demodulation and Error Correction IC for DTMB
Overview
The TC90508 is a China Digital Terrestrial Multimedia Broadcasting GB20600-2006(DTMB) compliant IC that has built-in demodulation and error correction circuits for each system.
The input signals are Direct IF (36 MHz) signal, Low IF signal and I/Q orthogonal detected baseband signal for digital terrestrial demodulation. The output signal is a demodulated and error-corrected MPEG-2 transport stream.
The TC90508 is fully compliant with GB/T26685-2011, GB/T26686-2011 and not only with the 7 modes specified in
the standard but also provides excellent reception performance for each regional operation in China.
Toshiba developed the TC90508 with its leading-edge technology, ensuring it is ideal for various needs.
- China Electronics Standardization Institute (CESI) standard certified by ADTC.
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TC90508 Block Diagram
Features
Ideal for DTMB receivers, high reception performance, and small package
High-performance demodulator suitable for real reception environments, including SFN reception environment
Compliant with China Digital Terrestrial Multimedia Broadcasting GB20600-2006(DTMB) and designed for real reception environments, it realizes the highest reception performance in several reception environments.
- Excellent required C/N ratio
- Low power consumption
- Built-in long-delay multipath interference canceller
- Built-in memory for de-interleaver
- Stand-alone operation available
- Small Package: LQFP 64 pin
- Power supply voltage: 1.2 V, 3.3 V
- Full compliance with GB20600-2006(DTMB)
- Full compliance with requirements of GB/T26685-2011, GB/T26686-2011）
- Built-in tuner phase noise suppressing and co-channel interference suppressing circuit
- Fast channel switching and channel search available
- MPEG-2 transport stream serial and parallel output
- Fast mode (400 kHz) I2C compatible, tuner I2C control
- Supports standby operation