DAC37J82_15 Datasheet, PDF (1/119 Pages) Texas Instruments – DAC3xJ82 Dual-Channel, 16-Bit, 1.6/2.5 GSPS, Digital-to-Analog Converters with 12.5 Gbps JESD204B Interface

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DAC37J82, DAC38J82
SLASE16B – JANUARY 2014 – REVISED MAY 2014
DAC3xJ82 Dual-Channel, 16-Bit, 1.6/2.5 GSPS, Digital-to-Analog Converters
with 12.5 Gbps JESD204B Interface
1 Features
•1 Resolution: 16-Bit
• Maximum Sample Rate:
– DAC37J82: 1.6 GSPS
– DAC38J82: 2.5 GSPS
• Maximum Input Data Rate: 1.23GSPS
• JESD204B Interface
– 8 JESD204B Serial Input Lanes
– 12.5 Gbps Maximum Bit Rate per Lane
– Subclass 1 Multi-DAC synchronization
• On-Chip Very Low Jitter PLL
• Selectable 1x -16x Interpolation
• Independent Complex Mixers with 48-bit NCO/ or
±n×Fs/8
• Wideband Digital Quadrature Modulator
Correction
• Sinx/x Correction Filters
• Fractional Sample Group Delay Correction
• Flexible Routing to Four Analog Outputs via
Output Multiplexer
• 3/4-Wire Serial Control Bus (SPI)
• Integrated Temperature Sensor
• JTAG Boundary Scan
• Pin-compatible with Quad-channel
DAC37J84/DAC38J84
• Power Dissipation: 1.1W at 2.5GSPS
• Package: 10x10mm, 144-Ball Flip-Chip BGA
2 Applications
• Cellular Base Stations
• Diversity Transmit
• Wideband Communications
• Direct Digital Synthesis (DDS) Instruments
• Millimeter/Microwave Backhaul
• Automated Test Equipment
• Cable Infrastructure
• Radar
3 Description
The pin-compatible DAC37J82/DAC38J82 family is a
very low power, 16-bit, dual-channel, 1.6/2.5 GSPS
digital to analog converter (DAC) with JESD204B
interface. The maximum input data rate is 1.23
GSPS.
Digital data is input to the device through 1, 2, 4 or 8
configurable serial JESD204B lanes running up to
12.5 Gbps with on-chip termination and
programmable equalization. The interface allows
JESD204B Subclass 1 SYSREF based deterministic
latency and full synchronization of multiple devices.
The device includes features that simplify the design
of complex transmit architectures. Fully bypassable
2x to 16x digital interpolation filters with over 90 dB of
stop-band attenuation simplify the data interface and
reconstruction filters. An on-chip 48-bit Numerically
Controlled Oscillator (NCO) and independent
complex mixers allow flexible and accurate carrier
placement.
A high-performance low jitter PLL simplifies clocking
of the device without significant impact on the
dynamic range. The digital Quadrature Modulator
Correction (QMC) and Group Delay Correction (QDC)
enable complete IQ compensation for gain, offset,
phase, and group delay between channels in direct
up-conversion applications. A programmable Power
Amplifier (PA) protection mechanism is available to
provide PA protection in cases when the abnormal
power behavior of the input data is detected.
DAC37J82/DAC38J82 family provides four analog
outputs, and the data from the internal two digital
paths can be routed to any two out of these four DAC
outputs via the output multiplexer.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC37J82
FCBGA (144)
10.00 mm x 10.00 mm
DAC38J82
FCBGA (144)
10.00 mm x 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
DAC37J82/DAC38J82
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.