News & Events
Harris Introduces the Industry’s First Dual-Channel 60MSPS 8-Bit DAC for Wireless Systems

— The HI5628/6 eases power supply system design and integration

MELBOURNE, FL, February 1, 1999 – Harris Semiconductor has developed a new, dual-channel D/A converter suited for high performance wireless systems. The HI5628/6’s

8-bit resolution and 60MSPS data rate gives wireless system designers a competitive market advantage with lower power consumption and integration by providing two channels for processing I and Q signals.

The HI5628/6 has independent data inputs and matched gain on analog outputs to simplify processing I and Q wireless signals. The HI5628/6’s dual channels are ideal for instrumentation design where multiple channels are required, in addition to reducing the crosstalk between channels. The device is equip with a small 48-pin Thin Quad Flatpack that saves significant board space, making it suitable for portable applications.

The HI5628/6 compliments Harris’ HI5662 Dual 8-bit A/D converter and the PRISM Full Duplex chipset to provide an end-to-end solution for wireless system designers. Despite its advance features, the HI5628/6 is competitively priced against single D/A converters.

The HI5628/6 consumes 165mW per channel when used with a +5V supply and a mere 54mW when used with a +3V supply. To further reduce power consumption, a power down mode is provided to reduce standby power needs to less than 1mW. The +5V+3V power-supply operation eases power supply system design and integration with high-speed +3V DSP processors found in the market today.

The HI5628/6 can convert two, 8-bit parallel words into an analog current in less than 8ns. The analog output pin can drive 2 to 20mA and a 50ohm load. Any analog output waveform can be reconstructed with a minimum amount of distortion and spurious noise. The output full-scale-current can be set by an external resistor. The high quality internal voltage reference is very stable over the full –40 to 85oC industrial temperature range.

High performance D/A converters are ideal for communication applications such as direct digital synthesis (DDS), frequency synthesis, I and Q modems, multilevel QAM systems and wireless local loop systems. It is also utilized in test equipment and in medical imaging systems such as ultrasound where multiple channel D/A converters are desired.

Price and
The HI5628 is now available in two different speed grades, HI5628/6IN (60 MSPS) and the HI5628IN (125MSPS). Packaged in 48-lead TQFPs, the HI5628/6 is available from stock for $6.73 in quantities of 100s.

The HI5628 family is another example of Harris Semiconductor's company-wide focus on high-speed signal processing for communication applications. Harris’ D/A converter line covers the resolution scale from 8- to 14-bits and from 20 to 500MSPS. In addition to data converters, Harris addresses the entire signal processing chain with a portfolio of linear, mixed-signal, DSP ICs optimized for high-speed and multimedia application-specific products. End-markets include wireless communications, video and image processing, high-speed cable communications and test and measurement equipment.

Harris Corporation's Semiconductor sector manufactures discrete semiconductors and integrated circuits. Product development efforts are focused on innovative "next level solutions" for the communications and power markets. The company’s portfolio of high-value products serve many market segments – automotive, industrial, PC computing, wireless networking, tele-communications, signal processing, PC multimedia, consumer electronics, defense and space.

Harris Corporation, with worldwide sales of $3.9 billion, is an international communications and electronics company that provides a wide range of products and services such as wireless and personal communications, digital television (HDTV), health care information, automotive electronics, transportation, business information, defense communications and information and Lanier office products.