Renesas ISL73141SEH
ISL73141SEH - Radiation Hardened 14-Bit 1MSPS SAR ADC
Renesas 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 best in class dynamic and static performance, including signal-to-noise ratio (SNR), effective number of bits (ENOB), integral non-linearity (INL) and differential non-linearity (DNL). The ADC fully resets after every sample, clearing any errors that result from a single event upset (SEU) due to heavy ion radiation during spaceflight.
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 space 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. The ISL73141SEH ADC is one of seven ICs, including 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). The SEE testing also 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 an LET range up to 86MeV*cm2/mg.
Key features
- 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°
Block diagram
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