1 Features

? Radiation tolerance:

– Total ionizing dose (TID): 30krad (Si)

– Single-event latch-up (SEL): 43MeV-cm2/mg

– Single-event functional interrupt (SEFI):

43MeV-cm2/mg

? Space-enhanced plastic (space EP):

– Outgassing test performed per ASTM E595

– Vendor item drawing (VID) V62/24641

– Supports defense and aerospace application

temperature range: –55°C to +125°C

– Controlled baseline

– One assembly and test site

– One fabrication site

– Extended product life cycle

– Product traceability

? Specified monotonicity

? Low-power operation

? Rail-to-rail voltage output

? Power-on reset to zero-scale output

? Wide power-supply range of 2.7V to 5.5V

? Small package:

– 8-pin VSSOP (3mm × 3mm)

? Power-down feature

? Key specifications:

– 12-bit resolution

– DNL: ?0.15LSB, +0.35LSB (typical)

– 12μs output settling time (typical)

– 4mV zero-code error (typical)

– Full-scale error at ?0.07%FSR (typical)

2 Applications

? Command and data handling (C and DH)

? Communications payload

? Optical imaging payload

? Radar imaging payload

? Satellite electrical power system (EPS)

3 Description

The DAC121S101-SEP device is a full-featured,

general-purpose, 12-bit voltage-output digital-toanalog

converter (DAC) that can operate from a

single 2.7V to 5.5V supply and consumes just 177μA

(typical) of current at 3.6V. The on-chip output

amplifier allows rail-to-rail output swing and the three

wire serial interface operates at clock rates up to

30MHz over the specified supply voltage range and

is compatible with standard SPI, QSPI, MICROWIRE

and DSP interfaces.

The supply voltage serves as the voltage reference

for the DAC121S101-SEP, providing the widest

possible output dynamic range. A power-on reset

circuit powers up the DAC output to zero volts until

there is a valid write to the device. A power-down

feature reduces power consumption to less than a

microwatt (typical).