1 Features
1• Very Low Power: 1.27 W at 1.25 GSPS, Full
Operating Conditions
• Multi-DAC Synchronization
• Selectable 2x, 4x, 8x, 16x Interpolation Filter
– Stop-Band Attenuation > 90 dBc
• Flexible On-chip Complex Mixing
– Two Independent Fine Mixers with 32-Bit
NCOs
– Power Saving Coarse Mixers: ± 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 16-Bit LVDS Input Data Bus
– 8 Sample Input FIFO
– Data Pattern Checker
– Parity Check
– GC5330 Compatible
• Temperature Sensor
• Differential Scalable Output: 10 mA to 30 mA
• Multiple Package Options: 88-Pin 9x9mm WQFN
and 196-Ball 12mmx12mm NFBGA (GREEN / Pb-
Free)

2 Applications
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications

3 Description
The DAC3484 is a very low power, high dynamic
range, quad-channel, 16-bit digital-to-analog
converter (DAC) with a sample rate as high as 1.25
GSPS.
The device includes features that simplify the design
of complex transmit architectures: 2x to 16x digital
interpolation filters with over 90dB of stop-band
attenuation simplify the data interface and
reconstruction filters. Independent complex mixers allow 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 16-bit LVDS data bus with on-chip termination. 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 very-small 88-pin 9x9mm WQFN
package or 196-ball 12x12mm NFBGA package.
Very low power, small size, superior crosstalk, high
dynamic range and features of the DAC3484 are an
ideal fit for systems with multiple transmit channels.