Free Newsletter
Register for our Free Newsletters
Newsletter
Zones
Access Control
LeftNav
Alarms
LeftNav
Biometrics
LeftNav
Detection
LeftNav
Deutsche Zone (German Zone)
LeftNav
Education, Training and Professional Services
LeftNav
Government Programmes
LeftNav
Guarding, Equipment and Enforcement
LeftNav
Industrial Computing Security
LeftNav
IT Security
LeftNav
Physical Security
LeftNav
Surveillance
LeftNav
View All
Other Carouselweb publications
Carousel Web
Defense File
New Materials
Pro Health Zone
Pro Manufacturing Zone
Pro Security Zone
Web Lec
 
ProSecurityZone Sponsor
 
ProSecurityZone Sponsor
 
ProSecurityZone Sponsor
 
ProSecurityZone Sponsor
 
ProSecurityZone Sponsor
 
ProSecurityZone Sponsor
 
 
News

Low power video amplification

Texas Instruments : 01 October, 2008  (New Product)
Four channel video buffer from TI consumes low power levels and can be used in Digital Video Recorders
Low power video amplification
To help manufacturers design energy-efficient consumer electronics, Texas Instruments has introduced a flexible four-channel video buffer that consumes 57 percent less power than its closest competitor. The new device also includes a power-down feature to lower system power consumption even more and help enable manufacturers to achieve ENERGY STAR compliance in
set-top boxes (STBs) and personal and Digital Video recorders (PVRs and DVRs). The balance of ultra-low power and reduced space and cost also makes the amplifier well-suited for video surveillance systems and SCART audio/video connectors. Available development tools help manufacturers easily configure and test the amplifier for SCART applications, eliminating the need for costly components.

The THS7374 and THS7375 support a wide supply voltage range of +2.85 V to +5.5 V, providing designers with maximum flexibility while consuming minimal power. The devices feature a 9.6-mA total quiescent current at 3.3-V supply for all four channels. Even operating at 5 V, each device consumes only 10 mA total quiescent power. A power-down option further reduces quiescent current consumption to 0.1-uA, making the THS7374/5 ideal choices for consumer device systems seeking ENERGY STAR compliance.

Further adding to the devices' flexibility, the THS7374/5 video amplifiers also include a 6th order 9.5-MHz Butterworth filter used as a digital-to-analogue converter (DAC) reconstruction filter or an analogue-to-digital converter (ADC) anti-aliasing filter to deliver higher quality analogue video outputs or inputs. The filter is well-suited for SDTV video, allowing the THS7374/5 to simultaneously support a composite (CVBS) video channel, along with three channels to support s-video and component Y'U'V', G'B'R' (R'G'B'), or Y'P'BP'R 480i/576i. Additionally, the filter can be bypassed to provide a 150-MHz amplifier bandwidth to support wider bandwidth signals.

The THS7374/5 supports multiple input and output configurations for either AC- or DC-coupled applications. On the output side, the devices' deliver 80 mA output current drive capability, which can drive two lines per channel or 75-Ohm loads. In addition, the THS7374's rail-to-rail output stage includes a 6-dB gain for video line driving.

TI complements its video amplifiers with its suite of DaVinci digital media processors. The THS7375 provides a 15-dB output gain, enabling SDTV-compliant outputs from the processor and providing power savings and analogue signal filtering to improve analogue video quality.

In addition, TI provides a host of signal chain and power management devices to be used in conjunction with the THS7374/5 to help manufacturers meet ENERGY STAR requirements in a STB design, including the recently introduced TPS54331, a 3-A 28-V DC/DC converter with
Eco-modeT light load efficiency.
Bookmark and Share
 
Home I Editor's Blog I News by Zone I News by Date I News by Category I Special Reports I Directory I Events I Advertise I Submit Your News I About Us I Guides
 
   © 2012 ProSecurityZone.com
Netgains Logo