FEATURES
50Msps Update Rate
16-Bit Resolution
High Spectral Purity: 87dB SFDR at 1MHz f OUT
Differential Current Outputs
30ns Settling Time
5pV-s Glitch Impulse
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
DESCRIPTION
The LTC®1668 is a 16-bit, 50Msps differential current output DAC implemented on a high performance BiCMOS
process with laser trimmed, thin-film resistors. The com-bination of a novel current-steering architecture and a
high performance process produces a DAC with excep-tional AC and DC performance. This is the first 16-bit DAC
in the marketplace to exhibit an SFDR (spurious freedynamic range) of 87dB for an output signal frequency of
1MHz.Operating from ±5V supplies, the LTC1668 can be con-figured to provide full-scale output currents up to 10mA.
The differential current outputs of the DAC allow single-ended or true differential operation. The – 1V to 1V output
compliance of the LTC1668 allows the outputs to be con-nected directly to external resistors to produce a differ-
ential output voltage without degrading the converter’s linearity. Alternatively, the outputs can be connected to the
summing junction of a high speed operational amplifier or to a transformer.
The LTC1668 is available in a 28-pin SSOP and is fully specified over the industrial temperature range.
IC suppliers in China
Manufacturer of electroniccomponents
China supplier of electronic parts
Electrolytic capacitor Agent
Aishi Electrolytic capacitor Agent
Hi-Link HLK module manufacture global agent
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