STMicroelectronics

Dual low voltage differential signaling (LVDS), driver receiver designed, packaged and qualified for use in aerospace environments in a low-power and fast-transmission standard, and operating at 3.3 V power supply (3.6 V max operating and 4.8 V AMR). The RHFLVDSR2D2 operates over a controlled impedance of 100-ohm transmission media that may be printed circuit board traces, back planes, or cables. The circuit features an internal fail-safe function to ensure a known state in case of an input short circuit or floating input. All pins have cold spare buffers to ensure they are in high impedance when VCC is tied to GND. The RHFLVDSR2D2 can operate over a large temperature range of -55 °C to +125 °C and it is housed in an hermetic Ceramic Flat-18 package.

The RHR801 is a very high-speed single comparator. It is designed to allow very high rise and fall times while drawing a high noise supply rejection. It uses a high-speed complementary BiCMOS process to achieve its very good speed/power ratio and its high tolerance to radiation. The RHR801 is mounted in a hermetic Flat-8 package.

The RHRDAC121 is a 12-bit voltage-output digital-to-analog converter that can operate from 2.3 V to 3.6 V power supply drawing a very low current consumption, with an internal voltage referencing. The output features rail-to-rail swing and the three-wire serial interface operates at clock rates up to 20 MHz compatible with standard SPI. The RHRDAC121 comes in a hermetic ceramic Flat10-lead, and it can operate from -55 °C to +125 °C ambient temperature.

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.

The RHRPM4424 is a flexible, high-frequency dual low-side driver specifically designed to work with high capacitive MOSFETs and IGBTs in an environment with high levels of radiation such as aerospace. The RHRPM4424 outputs can sink and source 4.5 A of peak current independently. By putting in parallel the two PWM outputs, a higher driving current (up to 9 A peak) can be obtained. The RHRPM4424 works with CMOS/TTL compatible PWM signal so it can be driven by an external PWM controller, such as the ST1843 or the ST1845. The FLAT-16 version conforms to an industry standard pinout and can dissipate up to 550 mW per channel, while FLAT-10 version optimizes the PCB real estate. Since both of packages are hermetic, this device is suitable for any kind of harsh-environment.

The RHRPMICL1A is an integrated current limiter designed to work with an external P-channel power MOSFET. It can be used as a universal solution to protect a power supply (from 8.5 V) from anomalous external current demand (for example, in case the load enters latch-up conditions). It can protect or replace conventional fuses and can also be used to control redundant loads. The RHRPMICL1A features 3 user-configurable operating modes (re-triggerable, latched, foldback), with different behaviors in case of overload/short-circuit events. All key parameters of the application, including the current limit, the trip-off and recovery times and the undervoltage protection are user configurable, making the RHRPMICL1A suitable for a wide range of applications. Because of its floating ground, it can even be used on power buses with voltage above its maximum specification of 52 Volt supply voltage. The status and control pins allow remote control of the device and consequently the load. The RHRPMICL1A is designed in ST's proprietary BCD6s-SOI technology to provide total dose and heavy ion radiation hardness. Housed in a hermetic Flat-20 package assembled in ST's QML-V certified facility, it is ideally suited for harsh environments.

The S2-LP is a high performance ultra-low power RF transceiver, intended for RF wireless applications in the sub-1 GHz band. It is designed to operate in both the license-free ISM and SRD frequency bands at 433, 512, 868 and 920 MHz, but can also be programmed to operate at other additional frequencies in the 413-479 MHz, 452-527 MHz, 826-958 MHz, 904-1055 MHz bands. The S2-LP supports different modulation schemes: 2(G)FSK, 4(G)FSK, OOK and ASK. The air data rate is programmable from 0.1 to 500 kbps. The S2-LP can be used in systems with channel spacing down to 1 kHz enabling the narrow band operations. The S2-LP shows an RF link budget higher than 140 dB for long communication ranges and meets the regulatory requirements applicable in territories worldwide, including Europe, Japan, China and the USA.