Product roundup: Audio/video multimedia ICs

Product Roundup: Audio/video multimedia ICs

Most electronic products today have some form of audio or video capability. These features are made possible due to the sophisticated audio, video, or multimedia ICs that are available today. Below is a sampling of parts that were introduced to the market during the past 6 or so months.

Xceive (www.xceive.com) offers the XC800 COFDM digital demodulator which enables tight integration with its hybrid silicon tuners to provide a silicon front-end solution for TV and PCTV manufacturers. The part requires no ADC and provides a power consumption of less than 150 mW. It is fully compliant with ETSI ETS 300 744 DVB-T, Nordig unified 1.0.3, and DTG D-Book and E-Book standards. Housed in a 48-pin QFN package, the demodulator receives all modes of transmission, such as 2k, 4k, and 8k COFDM modes with 5-, 6-, 7-, and 8-MHz channel bandwidths.

Providing 1080p video performance at Energy Star levels of power efficiency, the ADV7604 deep color HDMI receiver with CEC (consumer electronic control) from Analog Devices (www.analog.com) matches a 12-bit deep color HDMI receiver with three 170-MHz, 12-bit A/D converters. The receiver helps designers to meet the new Energy Star 3.0 specification of 1 W or less of standby power by integrating the CEC buffer and CEC control software directly into its HDMI interface driver software.

A small portion of the chip remains awake to watch for CEC commands without any other HDTV systems drawing power. Housed in a 260-lead BGA, the part can digitize analog RGB display resolutions up to UXGA (1,600 × 1,200 at 60 Hz).

Analog Devices ADV7604 HDMI receiver

National Semiconductor (www.national.com) this past year introduced the industry’s first triple-rate (3G/HD/SD) serial digital interface (SDI), dual-channel serializer and deserializer (SerDes) transceiver , the LMH4345. The device is well suited for use in video routers, production switchers, video servers, format converters, video editing, and modular equipment. The part delivers jitter performance of 30-ps output alignment jitter and 0.6 units interval (UI) minimum input jitter tolerance. The serializer supports 270-Mbit/s, 1.485-Gbit/s, and 2.97-Gbit/s data rates. Typical power consumption is 1.6 W at 3-Gbit/s data transmission rates.

National’s LMH4345 SerDes transceiver

STMicroelectronics (www.st.com) offers the TSH346/TSH345 video filter/buffers to be used in products such as Blu-ray players, standard DVD players, PVRs, set-top boxes and digital televisions, to drive output signals to the TV screen over 75-Ω video connections. By integrating three complete filter/buffers into a single chip, both parts eliminate multiple discrete components used to transmit RGB signals or component video such as Y-Pb-Pr. The TSH345 can drive either high-definition signals at up to 30 MHz or standard-definition video in progressive or interlaced formats, while the TSH346 is optimized for high-definition equipment.

Designed for portable multimedia devices, the MAX9892 shunt-mode, audio click-and-pop eliminator from Maxim Integrated Products (www.maxim-ic.com) provides 35 dB of click-and-pop suppression to eliminate the irritating audible artifacts generated during startup and shutdown cycles. The MAX9892 eliminates click-and-pop noise on power and shutdown cycles by connecting to the output of the existing amplifier and providing a low-impedance path to ground during power on and off. Operating voltage is from a 1.7 to 3.6-V single supply and current consumption is 1 µA. Available in tiny UCSP and µDFN packages, the part requires only a 0.1-µF capacitor to complete the solution.

Maxim’s MAX9892 audio click-and-pop eliminator

Intersil (www.intersil.com) also offers for MP3 players, docking speaker systems, cell phones, portable DVD players, and sound cards, the ISL54406 stereo audio switch , which eliminates unwanted clicks and pops typically caused by powering up and down, muting on and off, and switching between audio sources. Features include a standby current of 5 nA max and a THD of just 0.015% at 1 mW into a 32-Ω load.

Texas Instruments (www.ti.com) offers the TLV320AIC3107 audio codec, which integrates a stereo headphone amplifier and mono Class D speaker amplifier. The part enables CD-quality playback and extends battery life in portable products such as cell phones, portable navigation devices, and portable media players. The device consumes just 15 mW at 48 kHz and has a 3.3-V analog supply. It also features a stereo 8 to 96-ksample/s D/A converter with 97-dB SNR and 8 to 96-ksample/s A/D converter with 92-dB SNR.

The company also recently announced the TAS5709 and TAS5710 digital-input audio power amplifiers, which combine 32 bits of advanced audio processing with 20 W of stereo output power into 8 Ω at 18 V. The parts support speaker equalization (EQ) and dual-band dynamic-range control (DRC) and offer TI’s unique 3D and bass boost technology. They have up to nine biquad filters per channel, and dual-band DRC with selectable threshold, attack, and decay. A two-channel I2 S input provides a direct connection to the digital processor.

The FM1100 audio/video demodulator and multi-standard digital IF processor from Fresco Microchip (www.frescomicrochip.com) improves picture quality and reduces costs in TV broadcast receivers. The part enables convergence of hybrid terrestrial and cable television broadcast reception and worldwide legacy audio/video demodulation (WAVe) converts standard or nonstandard NTSC/PAL/SECAM to high-fidelity CVBS and SIF.

IDT (www.idt.com) offers the four-channel IDT 92HD81 and six-channel IDT 92HD83 HD audio codecs , which support 1.5 to 1.8-V or 3.3-V nominal digital supply and either a 3.3- or 5-V nominal analog supply. The IDT 92HD81 features dynamic thermal management and a temperature sensor that gradually lowers the volume of the device if the temperature increases beyond specified limits and gradually brings the volume back to normal as the device cools. The IDT 92HD83 integrates dual capless headphone amplifiers, suiting it for the high-end multimedia notebook market requiring 5.1 surround audio.

Christina Nickolas