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DAC5670-SP
SGLS386F –JANUARY 2009–REVISED OCTOBER 2014
DAC5670-SP 14-Bit 2.4-GSPS Digital-to-Analog Converter (DAC)
1 Features
3 Description
The DAC5670 is a 14-bit 2.4-GSPS DAC with dual
1
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14-Bit Resolution
demultiplexed differential input ports. The DAC5670
is clocked at the DAC sample rate and the two input
ports run at a maximum of 1.2 GSPS. An additional
reference bit input sequence is used to adjust the
output clock delay to the data source, optimizing the
internal data latching clock relative to this reference
bit with a delay lock loop (DLL). Alternatively, the DLL
may be bypassed and the timing interface managed
by controlling DATA setup and hold timing to
DLYCLK.
2.4-GSPS Max Update Rate DAC
Dual Differential Input Ports
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Even/Odd Demultiplexed Data
Maximum 1.2 GSPS Each Port, 2.4 GSPS
Total
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Dual 14-Bit Inputs + 1 Reference Bit
DDR Output Clock
DLL Optimized Clock Timing Synchronized to
Reference Bit
The DAC5670 can also accept data up to 1.2 GSPS
using only the A input port. In the single port modes,
options include: repeating the input sample (A_ONLY
mode), 2× interpolation by zero stuff (A_ONLY_ZS
mode), or 2× interpolation by repeating and inverting
the input sample (A_ONLY_INV). These modes are
used to double the input sample rate up to 2.4 GSPS.
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LVDS and HyperTransport™ Voltage Level
Compatible
Internal 100-Ω Terminations for Data and
Reference Bit Inputs
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Selectable 2× Interpolation With Fs / 2 Mixing
Differential Scalable Current Outputs: 5 to 30 mA
On-Chip 1.2-V Reference
The DAC5670 operates with a single 3- to 3.6-V
supply voltage. Power dissipation is 2 W at maximum
operating conditions. The DAC5670 provides
nominal full-scale differential current-output of 20 mA,
supporting both single-ended and differential
applications. An on-chip 1.2-V temperature-
compensated bandgap reference and control
amplifier allows the user to adjust the full-scale output
current from the nominal 20 mA to as low as 5 mA or
as high as 30 mA.
a
3.3-V Analog Supply Operation
Power Dissipation: 2 W
192-Ball CBGA (GEM) Package
QML-V Qualified, SMD 5962-07247
Military Temperature Range (–55°C to 125°C
Tcase
)
Device Information(1)
2 Applications
PART NUMBER
PACKAGE
BODY SIZE (NOM)
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Test and Measurement: Arbitrary Waveform
Generator
DAC5670-SP
CBGA (192)
19.00 mm × 19.00 mm
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Communications
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Engineering evaluation (/EM) samples are
available
Simplified Schematic
(1)
These units are intended for engineering evaluation only.
They are processed to a non-compliant flow (that is, no burn-
in, and so forth) and are tested to a temperature rating of
25°C only. These units are not suitable for qualification,
production, radiation testing, or flight use. Parts are not
warranted for performance over the full MIL specified
temperature range of –55°C to 125°C or operating life.
SLEEP
Mode Controls
CSBIAS
CSBIAS_IN
DA_P[13:0]
IOUT_P
DA_N[13:0]
DB_P[13:0]
14 bit
2.4Gsps
DAC
Input
Registers
Demux
and
Format
IOUT_N
DB_N[13:0]
DTCLK_P
RBIASOUT
RBIASIN
Phase
Detector
Loop
Filter
REFIO_IN
REFIO
DTCLK_N
Bandgap
Ref
LOCK
RESTART
÷2
÷2
INV_CLK
DLYCLK_P
DLYCLK_N
Variable
Delay
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.