特性 Features

? DAC

?16-bit resolution at 3 kHz bandwidth

?External master clock: 2.4 to 3.6 MHz

?Internal master clock: 3 MHz

?Sampling frequency: 12 ksps at 3 MHzmaster clock

?Serial peripheral interface (SPI)

?Selectable input format: straight binary ortwo’s complement

?Internally filtered, single-ended outputvoltage

?Output feedback pin dedicated for highprecision sensing

?1.8 V/3.3 V digital interfaces

?3 V to 3.6 V analog supply

?Compatible with the RHF100 1.2 V Vref

?Power-down mode

?100 krad MIL-STD-883 1019.7

?SEL immune (up to 120 MeV.cm2/mg)

?SEU characterized

描述 Description

The RHRDAC1612 is a very low-noise, low-frequency, radiation hardened DAC optimized to operate in a bandwidth up to 3 kHz. This DAC has a sigma-delta architecture which provides superior linearity performance and features a very good signal-to-noise ratio of 96 dB@3 kHz.

The DAC operates with a standard SPI input data which it converts into single-ended, internally-filtered voltage outputs. The SPI interface allows write and read mode implementations.

Specifically designed to optimize precision over power consumption, the RHRDAC1612 only dissipates 15 mW at 12 ksps clocking.

Applications

?Space applications

?Telemetry

?Interferometry

?High-accuracy instrumentation