DAC3484_14 Datasheet, PDF (1/90 Pages) Texas Instruments – Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)

DAC3484
www.ti.com
SLAS749C – MARCH 2011 – REVISED AUGUST 2012
Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)
Check for Samples: DAC3484
FEATURES
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• 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: 10mA to 30mA
• Multiple Package Options: 88-pin 9x9mm
WQFN and 196-ball 12mmx12mm BGA
(GREEN / Pb-Free)
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 90 dB 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.
The DAC3484 very low power, small size, superior
crosstalk, high dynamic range and features are an
ideal fit for systems with multiple transmit channels.
APPLICATIONS
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated