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.