IT9130: DVB-T Front-End Receiver
IT9130 is a series of highly integrated DVB-T single-chip receiver consisting of high quality RF tuner front-end and COFDM demodulator to aim for superior performance, ultra-low power consumption, and simple system design of various DVB-T applications. IT9130 offers very low total Bill Of Material solutions. It does not require external SAW filter, LNA, or Balun.
IT9130 requires only one power regulator and one crystal to further simplify the system design and reduce the system cost. The ultra-low power consumption feature of the IT9130 makes it the perfect choice for all kinds of DVB-T applications. IT9130 series also supports lots of output interfaces, including embedded USB 2.0 interface, and serial/parallel MPEG2-TS interface input/output with built-in de-multiplexer.
IT9130 series is compliant with ETSI EN 300 744 V1.5.1 (including Annexes F and G), NorDig Unified Requirement 2.1, MBRAI2.0, DTG D-Book, IEC62216-1 E-Book, BSMI Taiwan and it can operate at 2K, 4K, or 8K mode with 5, 6, 7, or 8 MHz bandwidth. All modulations (QPSK, 16QAM, 64QAM), code rates (1/2, 2/3, 3/4, 5/6, 7/8), and guard intervals (1/4, 1/8, 1/16, 1/32) are supported and automatically detected from the TPS parameters.
Depending on the reception status, IT9130 continuously adjusts the states of its internal modules to avoid unnecessary power consumption and hence it can achieve the maximal power saving. The integrated RF tuner of IT9130 provides frond-end frequency down-conversion for applications over UHF band and VHF band.
The integrated LNA with low noise figure meets MBRAI 2.0 requirement and achieve superior sensitivity performance without the need of external LNA The Zero-IF direct conversion architecture of IT9130 achieves low power consumption and the integrated dual analog-to-digital converters (ADC) are capable of delivering the performance required for all modulations and code rates of DVB-T.
The single-ended RF input architecture of IT9130 eliminates the requirement of balun components. IT9130 AGC control loop bandwidth is designed to track a wide dynamic range of the received signal levels for slow or fast channel variations. The automatic RF/BB AGC gain distribution properly compromises the performance between noise and linearity.
In IT9130, an active impulse noise rejection algorithm removes the detrimental effects of the impulse noise and significantly improves the robustness of TV reception against interference from vehicles and electrical appliances. IT9130 uses the most advanced digital signal processing techniques to combat various impairments encountered in fixed, portable, and mobile channels.
Co-channel interference is actively searched and rejected by sophisticated digital signal processing in IT9130. Adjacent Channel Interference (ACI) is rejected by precisely controlled digital filters for 5, 6, 7, and 8 MHz bandwidth.
The Integrated Received Signal Strength Indicator (RSSI) further yields precise AGC adjustment in the environments with ACI. The all-digital synchronization tracking loops of IT9130 are capable of recovering carrier frequency offsets as large as ± 500 kHz and tolerating crystal jitters as large as ± 100 ppm.
The adaptive FFT window position tracking loop in IT9130 accurately identifies pre-echo or post-echo multi-path channels even in highly mobile environments. Therefore, inter-symbol interference (ISI) and inter-carrier interference (ICI) is greatly reduced.
In IT9130, the common phase error caused by tuner phase noise is corrected by a joint channel estimation and phase noise tracking algorithm to improve the robustness to RF imperfections. Besides, the multi-dimensional channel estimation and tracking scheme in IT9130 adaptively adjusts its internal parameters to reflect the different requirements in fixed, portable, or mobile channels and hence, optimal performance can be achieved for all DVB-T applications.
IT9130 provides a comprehensive set of performance monitoring parameters accessible. These parameters include signal strength and signal quality indicators, post-Viterbi bit error rate, Reed-Solomon packet error rate, TPS lock, and MPEG Sync lock indicators, carrier and crystal offsets, and many more.
A complete set of application programming interface (API) is available, facilitating fast and easy integration into products on Windows Mobile, Windows CE, Windows 7, Windows XP, Vista, Linux, and many other operating systems. Furthermore, a complete set of USB drivers on Windows 7/XP/Vista with Microsoft BDA (Broadcast Driver Architecture) compliant and on Windows Mobile/CE are provided for IT9130.
