RTAX4000D-1CQ352B - 4M-Gate Rad-Tolerant FPGA 1.5V | Microchip
MPN: RTAX4000D-1CQ352B ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3200 | $3,200.00 |
| 10 | $3050 | $30,500.00 |
| 100 | $2900 | $290,000.00 |
| 500 | $2750 | $1,375,000.00 |
| 1,000 | $2600 | $2,600,000.00 |
Drop-in alternatives for RTAX4000D-1CQ352B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000D-CQ352B
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View Datasheet →RTAX4000D-1CQ352V
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View Datasheet →RTAX4000D-CQ352V
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View Datasheet →RTAX4000D-CQ352E
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View Datasheet →RTAX4000DL-CQ352E
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View Datasheet →RTAX4000D-1CQ352B Maximum Ratings & Electrical Characteristics
| Family | RTAX-DSP Radiation-Tolerant FPGA |
| Equivalent System Gates | 4000000 gates |
| Logic Cells | 55440 cells |
| Configurable Logic Blocks (CLBs) | 36960 CLBs |
| Core Supply Voltage (Nominal) | 1.5 V |
| Core Supply Voltage Range | 1.425 V to 1.575 V |
| Combinatorial CLB Delay (Max) | 0.99 ns |
| Process Technology | 0.15 um CMOS |
| Programmability Type | Antifuse (OTP), live at power-up |
| Speed Grade | -1 |
| Package | 352-pin Ceramic CQFP (CQ352) |
| Mounting Type | Surface Mount |
| Technology | CMOS, Digital |
| Radiation Tolerance | Radiation-tolerant (space flight) |
| Embedded SRAM | Yes (with built-in FIFO control logic) |
| Operating Temperature Bin | B |
| RoHS Status | unknown |
RTAX4000D-1CQ352B 352-pin ceramic cqfp (cq352) Pin Configuration Guide
Complete pinout information for RTAX4000D-1CQ352B (352-pin ceramic cqfp (cq352) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for RTAX4000D-1CQ352B.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
RTAX4000D-1CQ352B is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Bus Control and Avionics, Onboard Image and Signal Processing, Telemetry, Tracking and Command (TT&C), Instrument Control and Sensor Interface, Launch Vehicle and Re-entry Avionics.
Satellite Payload Data Processing
The RTAX4000D-1CQ352B fits satellite payload processing chains because its DSP-enhanced die integrates multiply-accumulate blocks and 4 million gates (36,960 CLBs), enough to implement image compression, FFT, and forward-error-correction pipelines on a single chip. The 0.99 ns maximum combinatorial CLB delay supports clock rates in the tens of MHz to low hundreds of MHz typical of payload data formatting. Used between the sensor front-end and the telemetry downlink, the FPGA formats, filters, and compresses data in real time; its antifuse fabric adds no configuration-cell static power and requires no boot PROM, cutting board mass and single-point failures - a decisive advantage in mass- and reliability-constrained low-Earth-orbit payloads.
Recommended
Spacecraft Bus Control and Avionics
Spacecraft bus controllers benefit from the RTAX4000D-1CQ352B's live-at-power-up antifuse technology: logic is functional immediately when the satellite powers on after launch-vehicle separation, with no configuration load time or PROM read errors. The 4M-gate capacity implements attitude-control interfaces, mode-state machines, CCSDS telemetry encoders, and MIL-STD-1553 or SpaceWire glue logic concurrently. Operating from a 1.5V core (1.425V-1.575V) directly compatible with standard space power rails via simple point-of-load regulation, the device's radiation-tolerant design targets total ionizing dose and single-event requirements of typical orbits. Segmentable clock resources let designers gate unused clock domains, reducing bus-controller power during safe mode.
Recommended
Onboard Image and Signal Processing
Remote-sensing and Earth-observation instruments use the RTAX4000D-1CQ352B's DSP blocks to perform real-time image filtering, 2-D convolution, and coherent accumulation at the sensor output, before telemetry bandwidth limits apply. With 55,440 logic cells plus dedicated MAC resources, a single CQ352 device replaces multiple fixed-function signal chains, shortening the signal path and reducing interface radiation exposure. Designers typically pipeline sensor data through the FPGA at 30-100 MHz using the -1 speed grade's 0.99 ns CLB delay, while the embedded SRAM with built-in FIFO control logic buffers line data between acquisition bursts. The one-time-programmable fabric also protects flight algorithms from configuration upsets in flight.
Recommended
Telemetry, Tracking and Command (TT&C)
TT&C subsystems demand deterministic, always-on logic - exactly what the RTAX4000D-1CQ352B delivers with its non-volatile antifuse configuration and radiation-tolerant CMOS process. The device implements command decoders, frame synchronizers, encryptors, and time-tag distribution across its 36,960 CLBs, with generous capacity left for redundancy voting schemes such as triple-modular redundancy on critical registers. Its 352-pin ceramic CQFP package offers the hermeticity and thermal cycling robustness required for launch environments, and surface-mount assembly is compatible with standard high-reliability assembly flows. Power draw remains low because the fabric has no SRAM configuration bits to refresh during dormant cruise phases.
Recommended
Instrument Control and Sensor Interface
Science instruments on planetary probes and observatories interface detectors (CCDs, APDs, spectrometers) to the spacecraft through RTAX4000D-1CQ352B logic: the FPGA generates detector clocking, sequences exposures, digitizes and buffers streams using embedded SRAM FIFOs, and packetizes data for the payload bus. The radiation-tolerant qualification and single-chip form factor suit instruments where repair is impossible and mass is priced per gram. Designers exploit the 4M-gate headroom to implement adaptive gain control and on-instrument event filtering, downlinking only science-relevant data. Because the fabric is one-time programmable, instrument firmware is frozen and verified before integration, simplifying mission assurance reviews compared with reconfigurable SRAM FPGAs.
Recommended
Launch Vehicle and Re-entry Avionics
Launch vehicles and re-entry systems need flight logic that is instantly operational through high-vibration, high-radiation flight phases; the RTAX4000D-1CQ352B's antifuse configuration cannot be shaken loose or corrupted by configuration-memory upsets, and its ceramic CQFP package withstands severe thermal gradients. The 0.99 ns CLB delay and -1 speed grade support tight control-loop latencies for guidance, navigation, and sequencing functions, while 4 million gates consolidate redundant-channel voting, safety interlocks, and telemetry formatting into one hermetic device. Using one radiation-tolerant FPGA instead of multiple commercial parts reduces assembly joints and connector interfaces - common failure sites during launch shock and acoustic environments.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000D-1CQ352B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000D-CQ352B | RTAX4000D-1CQ352V | RTAX4000D-CQ352E | RTAX4000DL-CQ352E |
|---|---|---|---|---|---|
| Package | 352-pin Ceramic CQFP (CQ352) | CQ352 - same | CQ352 - same | CQ352 - same | CQ352 - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| Logic Cells | 55,440 | 55,440 | 55,440 | 55,440 | 55,440 |
| Core Supply Voltage | 1.5 V (1.425-1.575 V) | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Speed Grade | -1 (0.99 ns max CLB delay) | Standard (slower than -1) | -1 | Standard (slower than -1) | Standard (DL power variant) |
| Screening Level | B bin | B bin | V flow | E flow | E flow |
| DSP Blocks | Yes (D die) | Yes (D die) | Yes (D die) | Yes (D die) | Yes (DL die) |
Key Differentiators
- Faster -1 speed grade (vs RTAX4000D-CQ352B)
- DSP-enhanced die (vs RTAX4000SL-1CQ352E)
- Lower-power DL option available (vs RTAX4000DL-1CQ352E)
- Single-chip live-at-power-up operation (vs SRAM FPGAs (e.g., commercial equivalents))
Design Notes
Regulate the 1.5V core rail to stay within 1.425V-1.575V under all load and radiation conditions. Use a rad-tolerant point-of-load regulator with output tolerance analysis covering line, load, temperature, and TID drift; a rail outside the window invalidates the 0.99 ns worst-case CLB timing. Estimated: even a +/-5% total error band consumes the entire 1.425-1.575V window, so budget regulator accuracy carefully and add bulk and 0.1 uF decoupling at the CQ352 power pins per Microchip power application guidance.
The antifuse fabric is one-time programmable: RTAX4000D flight units cannot be reprogrammed after programming, so complete timing closure, design reviews, and radiation-effects mitigation (TMR on control registers) before submitting the programming file. Do not confuse prototype parts with flight units - Microchip notes PROTO units are offered in non-hermetic ceramic packages with identical timing attributes, but they are not qualified for flight. Order flight-lot parts with the correct screening suffix (B/V/E) documented in traceability paperwork.
The 352-pin ceramic CQFP (CQ352) is a large, fragile ceramic package with fine-pitch gull-wing leads. Handle with lead-forming fixtures, avoid lead re-bending after tinning, and use standard high-reliability SMT profiles compatible with hermetic ceramic bodies - thermal mass is high, so preheat thoroughly. Provide corner support or tie-down features on the PCB because the package weight makes it vulnerable to launch vibration; follow the Microchip package mechanical drawing for land pattern and keep-out dimensions.
Compliance Information
Hermetic ceramic CQFP space-grade packaging; RoHS/REACH status not stated in provided data - space-grade ceramic parts may carry specific exemptions. Confirm compliance certificates with Microchip for the flight lot.
