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New CommsDAC family targets
high-speed digital data transmission

Designers of systems with high-performance digital signal processors (DSPs) such as the TMS320C6000 and TMS320C5000 platforms from Texas Instruments need not look any further than TI for high-performance complementary data converter components, thanks in part to four new digital-to-analog converters (DACs) tailored for communications systems.
The new 100-MSPS product family, with each device known as a CommsDAC™, includes the THS5641, THS5651, THS5661 and THS5671 with 8-, 10-, 12- and 14-bit resolution, respectively. The THS56x1 devices provide DSP customers the benefit of using binary or two's complement input code format, since DSPs process data expressed in a two's complement format. Furthermore, brief 1-ns minimum set-up and hold times allow the CommsDAC more time to latch input data.

Product features:

100-MSPS update rate
8-, 10-, 12- and 14-bit resolution
Single 5-V analog supply, 3-V to 5-V digital
On-chip 1.2-V reference
Differential current outputs from 2 mA to 20 mA
SFDR for 40 MHz output @ 100 MSPS: 54 dBc
Low power of 175 mW at 5 V
Characterized for operation from -40° C to 85° C

 

TI Analog and Mixed-Signal Showcase
Issue 2  June, 1999

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