New INTERSIL 14-Bit 1-MSPS ADC Delivers Best-in-Class Radiation-Hardened Performance
INTERSIL/RENESAS just announced the industry’s highest performance single-chip 14-Bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter (ADC) for radiation-hardened (rad-hard) space applications.
Renesas’ Intersil brand ISL73141SEH delivers the best in the class dynamic and static performance. Firstly, this includes signal-to-noise ratio (SNR), the effective number of bits (ENOB), integral nonlinearity (INL), and differential non-linearity (DNL). Secondly, the ADC fully resets after every sample. How? Clearing any errors that result from a single event upset (SEU) due to heavy-ion radiation during spaceflight.
Speaking of space missions, the ISL73141SEH is one of the key signal-path building blocks in long-duration geosynchronous/geostationary Earth orbit (GEO) communication satellites and manned spacecraft, including lunar missions. By delivering the industry’s best dynamic and static performance, the new 14-bit ADC accurately captures real-world analog transmissions and converts them for processing in the digital domain. As a result, the ISL73141SEH ADC is one of seven ICs, including a rad-hard temperature sensor, multiplexer, quad op-amp, ADC driver, LDO, and voltage reference to form a complete sensor interface signal chain solution that accelerates telemetry, tracking, and control (TT&C) and flight computer system development.
The space-grade ISL73141SEH is fully characterized for enhanced low dose rate sensitivity (ELDRS) radiation performance up to 75krad(Si) for total ionizing dose (TID) and linear energy transfer (LET) up to 86MeV*cm2/mg for single event effects (SEE). Additionally, the SEE testing shows no single event latch-up (SEL) or single event burnout (SEB). In addition, single event transients (SETs) have also been mitigated by testing at a LET range up to 86MeV*cm2/mg.
Key Features of the ISL73141SEH 14-Bit, 1-MSPS SAR ADC
- 1-MSPS throughput rate with no data latency and no missing codes
- 5V supply dissipates only 60mW
- High SNR of 82.1dBFS at 5V supply operation
- Operating from a 3.3V supply at 750-KSPS dissipates only 28mW
- Single supply operation simplifies system design
- Highest dynamic performance of 13.3 ENOB, enabling > 12-bit resolution
- Superior linearity: ±0.5 LSB INL and ±0.2 LSB DNL
- Full military temperature range of -55°C to +125°C
Sensor Interface Signal Chain for TT&C and Flight Computer
The ISL73141SEH 14-Bit, 1-MSPS SAR ADC is at the heart of the sensor interface signal chain and connects via SPI interface to MPUs, MCUs, and/or FPGAs to digitize sensor signals in digital TT&C subsystems and flight computers. System designers are able to build the entire signal chain with Renesas’ Intersil brand analog and power ICs, including ISL71590SEH temperature sensor; ISL70444SEH quad op amp; ISL71830SEH 16-channel low voltage multiplexer; ISL70517SEH instrumentation amp with ADC driver; ISL75052SEH high voltage LDO regulator; and ISL71091SEH40 precision, low-noise voltage reference.
In conclusion, the ISL73141SEH 14-bit, 1-MSPS SAR ADC is available now in a 14-lead ceramic dual flatpack package. An evaluation board is available for evaluating device features and performance. For more information, please visit www.renesas.com/products/ISL73141SEH.
If you want to know about the new ongoing development of the ADC family (8 channels ADC, Rad tolerant in plastic variant, and others) and/or if you have any questions, please contact us