1 Features
• Very low power: 900mW at 1.25GSPS, full
operating conditions
• Multi-DAC synchronization
• Selectable 2x, 4x, 8x, 16x interpolation filter
– Stop-band attenuation > 90dBc
• Flexible on-chip complex mixing
– Fine mixer with 32-bit NCO
– Power saving coarse mixer: ± n×Fs/8
• High performance, low jitter clock multiplying PLL
• Digital I and Q correction
– Gain, phase, offset, and group delay correction
• Digital inverse sinc filter
• Flexible LVDS input data bus
– Word- or byte-wide interface
– 8 Sample input FIFO
– Data pattern checker
– Parity check
• Temperature sensor
• Differential scalable output: 10mA to 30mA
• Multiple package options: 88 Pin 9 x 9mm WQFNMR
and 196-ball 12mm x12mm

2 Applications
• Cellular base stations
• Diversity transmit
• Wideband communications

3 Description
The DAC3482 is a very low power, high dynamic
range, dual-channel, 16-bit digital-to-analog converter
(DAC) with a sample rate as high as 1.25GSPS.
The device includes features that simplify the
design of complex transmit architectures: 2x to 16x
digital interpolation filters with over 90dB of stopband
attenuation simplify the data interface and
reconstruction filters. A complex mixer allows flexible
carrier placement. A high-performance low jitter clock
multiplier simplifies clocking of the device without
significant impact on the dynamic range. The digital
Quadrature Modulator Correction (QMC) enables
complete IQ compensation for gain, offset, phase, and
group delay between channels in direct up-conversion
applications.
Digital data is input to the device through a flexible
LVDS data bus with on-chip termination. Data can
be input either word-wide or byte-wide. The device
includes a FIFO, data pattern checker and parity test
to ease the input interface. The interface also allows
full synchronization of multiple devices.
The device is characterized for operation over the
entire industrial temperature range of –40°C to 85°C
and is available in a small 88 pin 9 x 9mm WQFN-MR
package or 196-ball 12 x12mm NFBGA package.
Low power, small size, superior crosstalk, high
dynamic range, and features of the DAC3482 make
it an ideal fit for today’s communication systems.