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March 26, 2009

Sharp to Introduce Receiver Tuner Module for One-Seg Digital Broadcasts

Enables Reception of Two One-Seg Programs Simultaneously

Press Release

Sharp Corporation will introduce into the Japanese market a new receiver tuner module for One-Seg digital terrestrial broadcasts capable of receiving two One-Seg programs simultaneously. Mass production of the model VA3A5JZ923 will begin on March 30, 2009.

In Japan, the percentage of mobile handset shipments with the capability to receive One-Seg programs exceeded 85% in December 2008*1. Now, manufacturers are seeking new added-value receiver functions in their efforts to differentiate their handsets in a competitive market environment.

The VA3A5JZ923 combines two tuner ICs with two OFDM demodulation ICs*2 to allow two One-Seg broadcast programs to be received simultaneously, enabling such features as dual-screen display, or background recording of another program on a different channel.

In addition, the VA3A5JZ923 supports diversity techniques to improve reception performance. In diversity mode, when receiving only a single broadcast channel, the signals received from the two tuners are combined to provide the optimal (most stable) video reception in the mobile environment. This enables a higher reception sensitivity of 112 dBm (a 3 dB improvement over its predecessor*3). Plus, Sharp’s proprietary high-density surface mount technology makes possible a compact package design measuring only 9.0 9.0 1.25 mm.

Product name One-Seg receiver tuner module
Model name VA3A5JZ923
Sample price (tax included) 20,000 yen
Mass production date March 30, 2009
Monthly production 500,000 units

Major Features

1. Enables two One-Seg broadcast programs to be received simultaneously.
2. Compatible with diversity systems for high-sensitivity, stable reception (when receiving only a single channel).
3. Compact package design (9.0 9.0 1.25 mm).

*1 Data source: JEITA (Japan Electronics and Information Technology Industries Association)
*2 OFDM (Orthogonal Frequency Division Multiplexing) is a digital modulation scheme adopted for use in terrestrial digital broadcasting.
*3 Sharp’s previous product: VA3A5JZ922.


Model name VA3A5JZ923
Target area Japan
Output format Transport stream (TS)
Receiving frequency band 470 to 770 MHz (UHF channels 13 to 62)
OFDM modulation Built-in
Input sensitivity –112 dBm (receiving in diversity mode)
Control interface I2C Bus*
Supply voltage 1.2 V (OFDM core), 1.8 V (RF), 1.8 to 3.1 V (I/O)
Power consumption 82 mW (receiving only a single channel)
160 mW (receiving two discrete channels)
155 mW (receiving in 2-channel diversity mode)
Outside dimensions 9.0 x 9.0 x 1.25 mm

* I2C Bus is a trademark of Philips Semiconductors Corporation.

The above information is true and accurate at the time of publication. Manufacture, sale, price and specifications of products may be subject to change.

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