DESCRIPTION
The LTC®1666/LTC1667/LTC1668 are 12-/14-/16-bit, 50Msps differential current output DACs implemented on a high performance BiCMOS process with laser trimmed, thin-film resistors. The combination of a novel current steering architecture and a high performance process produces DACs with exceptional AC and DC performance. The LTC1668 is the first 16-bit DAC in the marketplace to exhibit an SFDR (spurious free dynamic range) of 87dB for an output signal frequency of 1MHz.

FEATURES
■ 50Msps Update Rate
■ Pin Compatible 12-Bit, 14-Bit and 16-Bit Devices
■ High Spectral Purity: 87dB SFDR at 1MHz fOUT
■ 5pV-s Glitch Impulse
■ Differential Current Outputs
■ 20ns Settling Time
■ Low Power: 180mW from ±5V Supplies
■ TTL/CMOS (3.3V or 5V) Inputs
■ Small Package: 28-Pin SSOP

APPLICATIONS
■ Cellular Base Stations
■ Multicarrier Base Stations
■ Wireless Communication
■ Direct Digital Synthesis (DDS)
■ xDSL Modems
■ Arbitrary Waveform Generation
■ Automated Test Equipment
■ Instrumentation