Analog Devices has extended its mobile television RF (radio frequency) product family with the introduction of small terrestrial mobile TV RF tuners. The ADMTV803 and the ADMTV804 RF tuners are compatible with global terrestrial mobile TV standards. The RF tuners consume less power, prolong battery life and improve the user experience for mobile phone, notebook PC and PDA (personal digital assistant) applications.
The multi-standard tuners support China's CMMB (UHF band), TMMB and DTMB standards as well as DVB-H, DVB-T (Europe), DAB (Europe), T-DMB (Korea), ISDB-T: full-seg, 3-seg and 1-seg (Japan) and ATSC-M/H (USA).
The new radio chips allow mobile handset and portable and consumer electronic device manufacturers to develop mobile TV products capable of supporting multiple standards, providing higher market leverage from a single design. This lowers BOM (bill of materials) costs and reduces board footprint for manufacturers while meeting the needs of network operators and content providers for faster time to market for new mobile TV services.
The single-chip tuners feature low power consumption of 90mW and are each housed in a 4x4mm LFCSP package. The ADMTV803 supports the UHF (470MHz to 860MHz) broadcast frequencies of China's CMMB mobile TV standard.
The ADMTV803 provides improved signal reception with a low noise figure of 2.5dB. Its high linearity allows a sufficient margin for an adjacent channel-interference rejection ratio when supporting DVB-T/ISDB-T standards. The ADMTV803 integrates external passive devices required to configure the RF tuner circuitry making it easier to configure space-constrained mobile TV systems.
The ADMTV804 features all functionalities of the ADMTV803 with the addition of an LDO (low drop-out regulator). The LDO reduces BOM cost and is designed for the China (CMMB standard) and the US (ATSC-M/H standard) markets.
