TQ6122

TriQuint's TQ6122 GIGADAC™ is a monolithic, 8-bit digital-to-analog converter capable of conversion rates to at least 1000 Megasamples/ second. The TQ6122 DAC may be used for display generation, waveform and signal synthesis, and video signal reconstruction. The TQ6122 features a 2:1 data MUX at the input for ease of interface and offers synchronous blanking capability for maximum ease of use in video applications. It drives complementary 1 V peak-to-peak swings into 50-ohm loads; on-chip 50- ohm reverse terminations provide extremely fast settling time.

Due to the inherently high speed of TriQuint's one-micron gate Enhancement / Depletion-mode gallium arsenide process, the TQ6122 offers guaranteed operation at clock rates of 1000 MHz, with typical room temperature conversion rates of 1.5 Gs/s without multiplexing and 1.3 Gs/s when using multiplexed inputs. The TQ6122 features output rise and fall times of 500 ps (10% 90%), symmetric complementary output transitions, and glitch impulse values less than 10 pV/sec. When used for sine wave synthesis, typical spurious and harmonic free dynamic range is 45 dBc.

The TQ6122 may be retrofitted into designs which currently use TriQuint's TQ6111, 2, 3, 4M DACs with minimal changes to power supply levels and input and output connections. The part is available in a 44-pin ceramic package or as unpackaged die.