DAC34H84 Datasheet, PDF (1/80 Pages) Texas Instruments – Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)

DAC34H84
www.ti.com
SLAS751A – MARCH 2011 – REVISED JUNE 2011
Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)
Check for Samples: DAC34H84
FEATURES
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• Very Low Power: 1.4 W at 1.25 GSPS
• 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 Filters
• 32-Bit DDR Flexible LVDS Input Data Bus
– 8 Sample Input FIFO
– Supports Data Rates up to 625 MSPS
– Data Pattern Checker
– Parity Check
• Temperature Sensor
• Differential Scalable Output: 10mA to 30mA
• 196-Ball, 12x12mm BGA (GREEN / Pb-Free)
APPLICATIONS
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications
DESCRIPTION
The DAC34H84 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 32-bit
wide LVDS data bus with on-chip termination. The
wide bus allows the processing of very high
bandwidth signals. 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 196-ball, 12x12mm, 0.8mm pitch
BGA package.
The DAC34H84 very low power, high bandwidth
support, superior crosstalk, high dynamic range and
features are an ideal fit for next generation
communication systems.
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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, Texas Instruments Incorporated