DAC34H84_15 Datasheet, PDF (1/96 Pages) Texas Instruments – DAC34H84 Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)

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DAC34H84
SLAS751D – MARCH 2011 – REVISED SEPTEMBER 2015
DAC34H84 Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)
1 Features
•1 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 NFBGA (GREEN / Pb-Free)
2 Applications
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications
3 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC34H84
NFBGA (196)
12.00 mm x 12.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
DAC34H84
16-bit DAC
xN
RF
16-bit DAC
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16-bit DAC
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RF
16-bit DAC
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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.