DAC3482 Datasheet, PDF (1/79 Pages) Texas Instruments – Dual-Channel, 16-BIT, 1.25 GSPS Digital-to-Analog Converter (DAC)

DAC3482
www.ti.com
SLAS748A – MARCH 2011 – REVISED JUNE 2011
Dual-Channel, 16-BIT, 1.25 GSPS Digital-to-Analog Converter (DAC)
Check for Samples: DAC3482
FEATURES
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• 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: 10mA to 30mA
• Space Saving Package: 88-pin 9x9mm WQFN
(GREEN / Pb-Free)
APPLICATIONS
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications
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
package.
The DAC3482 very low power, small size, superior
crosstalk, high dynamic range and features are an
ideal fit for today’s communication systems.
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, Texas Instruments Incorporated