1 Features
• Radiation hardness assured DAC39RFx10-SP:
– Single event upset (SEU) immune registers
– Single-event latch up (SEL): 120MeV-cm2/mg
– RLAT Total ionizing dose (TID): 300krad (Si)
• Radiation tolerant DAC39RFx10-SEP:
– Single event upset (SEU) immune registers
– Single-event latch up (SEL): 43MeV-cm2/mg
– RLAT Total ionizing dose (TID): 30krad (Si)
• 16-bit, 10.4 or 20.8GSPS, multi-Nyquist DAC
Cores
• Maximum input data rate:
– 8-bit, Single channel, DES mode: 20.8GSPS
– 12-bit, Single channel, DES mode: 15.5GSPS
– 16-bit, Single channel: 10.4GSPS
– 8-bit, Dual channel, 10.4GSPS
– 12-bit, Dual channel: 7.75GSPS/ch
– 16-bit, Dual channel: 6.2GSPS/ch
• Output bandwidth (-3dB): 12GHz
• Performance at fOUT = 2.997GHz, DES2XL mode,
DEM/Dither off
– Noise floor (small signal): –155dBFS/Hz
– SFDR (-0.1dBFS) : 60dBc
– IMD3 (-7dBFS each tone) : –62dBc
– Additive phase noise, 10kHz offset: -138dBc/Hz
• Four Integrated digital up-converters (DUC)
– Interpolation: 1x, 2x, 3x, 4x, 6x, 8x, 12x ... 256x
– Complex baseband DUC for I/Q output
– Complex to real up conversion for dual channel
direct RF sampling
– 64-bit frequency resolution NCOs
• JESD204C Interface
– Up to 16 Lanes at up to 12.8Gbps
– Class C-S, subclass-1 Compatible
– Internal AC coupling capacitors
• SYSREF Windowing for automatic SYSREF timing
calibration
• Space screening and assurance:
– Meets ASTM E595 outgassing specification
– One fabrication, assembly, and test site
– Wafer lot traceability
– Extended product life cycle
– Radiation lot acceptance test (RLAT)
– Production burn-in (DAC39RFx10-SP only)

2 Applications
• Satellite communications (SATCOM)
• Phased array antenna systems
• Synthetic aperture radar (SAR) exciter
• Spectroscopy

3 Description
The DAC39RF10-Sx and 'RFS10-Sx are a family of
dual and single channel digital-to-analog converters
(DAC) with 16-bit resolution. The devices can be
used as non-interpolating or interpolating DACs for
either direct RF sampling or complex baseband
signal generation. The maximum input data rate is
20.8GSPS for a single channel or 10.4 GSPS for two
channels. The devices can generate signals of up to
10, 7.5, and 5GHz signal bandwidth (8, 12, and 16-
bit input resolution) at carrier frequencies exceeding
10GHz enabling direct sampling in X-band.
The high sampling rate, output frequency range, 64-
bit NCO frequency resolution and any frequency
hopping with phase coherence also makes the
DAC39RF10-Sx and 'RFS10-Sx capable of arbitrary
waveform generation (AWG) and direct digital
synthesis (DDS).
A JESD204B and JESD204C compatible serial
interface has 16 receiver pairs capable of up
to 12.8Gbps. The interface is JESD204B and
JESD204C subclass-1 compliant for deterministic
latency and multi-device synchronization through the
use of SYSREF.