DAC3482_15 Datasheet, PDF (1/106 Pages) Texas Instruments – DAC3482, Dual-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)

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DAC3482
SLAS748F – MARCH 2011 – REVISED AUGUST 2015
DAC3482, Dual-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)
1 Features
•1 Very Low Power: 900 mW 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
– 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: 10 mA to 30 mA
• Multiple Package Options: 88-Pin 9x9mm WQFN-
MR and 196-ball 12mmx12mm NFBGA (GREEN /
Pb-Free)
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 1.25 GSPS.
The device includes features that simplify the design
of complex transmit architectures: 2x to 16x digital
interpolation filters with over 90 dB of stop-band
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 very-small 88-pin 9x9mm
WQFN-MR package or 196-ball 12x12mm NFBGA
package.
Very low power, small size, superior crosstalk, high
dynamic range, and features of the DAC3482 make it
an ideal fit for today’s communication systems.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC3482
WQFN-MR (88)
NFBGA (196)
9.00 mm x 9.00 mm
12.00 mm x 12.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
DAC3482
16-bit DAC
xN
RF
16-bit DAC
xN
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.