Teledyne e2v’s EV12DS480 Digital-to-analog Converter Approved for Space after Passing Performance Tests Under Ionizing Radiation

OutReach -  27 November 2019 - Teledyne
e2v today confirmed during its participation at Space Tech Expo that its EV12DS480
digital-to-analog converter (DAC) has been approved for use in space
applications after it experienced irradiation tests.  The EV12DS480
is a 12-bit 8 GSps DAC, now ready for space applications, designed for Newspace
systems and offered in various reliability grades (including NASA Grade
1). This new DAC provides an analog bandwidth extending beyond 7GHz
facilitating multi-band, direct digital synthesis up to K-band (26.5GHz).


The series of tests included Total Ionizing Dose (TID) and
Heavy Ions (HI) measurements. The tests were carried out to show that
electronic components are capable of performing in a harsh space environment.
TID tests were performed to evaluate the functionality and performance
parameter drifts of the Device Under Test (DUT). Heavy Ions tests were
conducted at the RADiation Effects Facility (RADEF), specialized in applied
research around nuclear and accelerator based technologies. The HI tests
evaluate the Single Event Latch-up (SEL) and Single Event Effects, which
include Single Event Upset (SEU), Single Event Functional Interrupts (SEFI),
and Single Event Transient (SET). These tests are important to ensure
continuity and minimize drift.


"Tests on several EV12DS480 DAC devices are still underway
with a dose rate of 10 mrad/s, with neither failure, nor parameter drift up to
100 krad(Si). Teledyne e2v is planning to continue testing up to a targeted
cumulative dose of 150 krad(Si)." says  Romain Pilard, Application
Engineer from Teledyne e2v.


Exposure to heavy ions has allowed Teledyne e2v to draw the
following conclusions: no SEL was detected during the irradiation with a LET of
60 MeV.cm²/mg, with no tilt; SETs were observed during the irradiation from 3.6
MeV.cm²/mg to 69.3 MeV.cm²/mg; SEFI were observed during the irradiation from
3.6 MeV.cm²/mg to 69.3 MeV.cm²/mg but all these SEFI were successfully managed
by software reconfiguration of the DAC registers (no RESET, no power-up cycle

About Teledyne e2v

Teledyne e2v's innovations lead developments in healthcare,
life sciences, space, transportation, defence and security and industrial
markets. Teledyne e2v's unique approach involves listening to the market and application
challenges of customers and partnering with them to provide innovative
standard, semi-custom or fully-custom solutions, bringing increased value to
their systems.


To Top