Single-Chip Video Filter/Buffers Target Digital TV, Blu-ray, PVR, STB Applications
January 18, 2009 // Published as a news service by IHS
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STMicroelectronics (ST) said its new integrated circuits (ICs), the TSH345 and TSH346, add cost savings and supply-chain advantages to the technical benefits of integrated video filter/buffers for consumer electronic products.
The new ICs, which are pin compatible with existing devices, will be used in products such as Blu-ray players, standard DVD players, personal video recorders (PVRs), set-top boxes (STBs) and digital televisions, to drive output signals to the TV screen over 75 Ohm video connections.
By integrating three complete filter/buffers into a single chip, the TSH345 or TSH346 eliminates multiple discrete components used to transmit red, green, blue (RGB) signals or component video such as green, blue, red (YPbPr), according to ST.
The devices will also operate without the input capacitor normally added to preserve the video synchronization signal and require a single 5 volt (V) supply.
The TSH345 can drive either high definition (HD) signals at up to 30 MHz or standard definition video in progressive or interlaced formats. A standby pin enables power-saving operation. The TSH346 is optimized for HD equipment.
Both types are delivered in small surface-mount packages and can be used as direct replacements or as a second source for other filter/buffer ICs.
The TSH345 is a replacement for the FMS6203, FMS6418, ADA4412-3 or MAX7454. The TSH346 replaces the FMS6363, ML6426-5, ADA4417-3, THS7316 or MAX9500-9501.
All units are individually tested at minimum and maximum parameters to ensure optimum performance in high-volume consumer products, according to ST.
Both devices are in full production, and samples are also available.
Source: STMicroelectronics (ST).