RTAX4000DL-CQ352B - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN: RTAX4000DL-CQ352B ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8950 | $8,950.00 |
| 10 | $8500 | $85,000.00 |
| 100 | $7900 | $790,000.00 |
| 500 | $7350 | $3,675,000.00 |
| 1,000 | $6900 | $6,900,000.00 |
Drop-in alternatives for RTAX4000DL-CQ352B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000DL-CQ352V
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$4200 / Unit
View Datasheet →RTAX4000DL-CQ352E
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View Datasheet →RTAX4000DL-1CQ352V
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View Datasheet →RTAX4000DL-1CQ352E
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$3300 / Unit
View Datasheet →RTAX4000D-CQ352B
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View Datasheet →RTAX4000SL-CQ352B
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View Datasheet →RTAX4000DL-CQ352B Maximum Ratings & Electrical Characteristics
| Equivalent System Gates | 4,000,000 gates |
| Logic Cells | 55,440 |
| CLB Count | 36,960 CLBs |
| User I/O | 166 inputs / 166 outputs |
| Core Supply Voltage | 1.5 V |
| Process Technology | 0.15 um CMOS |
| Package | 352-terminal CQFP (CQ352), ceramic metal-sealed cofired flatpack |
| Package Dimensions | 48 mm x 48 mm |
| Package JESD-30 Code | S-CQFP with guard ring |
| Operating Temperature | -55C to +125C |
| Family | RTAX-DSP radiation-tolerant FPGA |
| Program Type | One-time programmable antifuse |
| Embedded Memory | Embedded SRAM with FIFO control logic |
| DSP Blocks | Yes (DL = DSP-enabled variant) |
| Power-Up Operation | Live at power-up (single chip) |
| Mounting Type | Surface Mount |
RTAX4000DL-CQ352B s-cqfp with guard ring Pin Configuration Guide
Complete pinout information for RTAX4000DL-CQ352B (s-cqfp with guard ring 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 RTAX4000DL-CQ352B.
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
RTAX4000DL-CQ352B is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft On-Board Computing, Remote-Sensing Image Processing, Telemetry and Telecommand Systems, Launch Vehicle Avionics, Radiation Test and Space Qualification Platforms.
Satellite Payload Data Processing
The RTAX4000DL-CQ352B fits satellite payload processing chains because its DL variant combines 4 million system gates with dedicated DSP multiply-accumulate blocks and embedded SRAM with FIFO control, enabling on-board channelization, filtering, and formatting of payload data in a single live-at-power-up chip. Placed between ADC/serializer front ends and downlink formatters, the antifuse fabric requires no configuration PROM, removing a failure point and reducing boot sequence complexity in orbit. Its 166 inputs and 166 outputs support wide parallel data buses, and the 1.5 V core with 0.15 um CMOS process keeps power within typical spacecraft power budgets. The radiation-tolerant fabric and -55C to +125C ceramic CQFP packaging address the heavy-ion and thermal environment of low-Earth-orbit and deep-space missions without external radiation hardening measures at board level.
Recommended
Spacecraft On-Board Computing
For on-board computers and payload controllers, the RTAX4000DL-CQ352B provides glue logic, bus bridging, and compute acceleration in a single hermetic ceramic package. Because RTAX antifuse devices are live at power-up and immune to configuration memory upsets, they are often used to implement critical boot, watchdog, and health-monitoring functions alongside a rad-tolerant processor. The 36,960-CLB organization gives ample capacity for memory controllers, SpaceWire-style interfaces, and redundant-voting logic, while 166 user outputs drive wide status and telemetry buses. The 352-terminal CQFP with guard ring supports reliable solder joints under launch vibration, and the -55C to +125C operating range covers unconditioned spacecraft thermal environments. Designers should lock the Libero design baseline early because the antifuse fabric is one-time programmable and flight units cannot be reworked.
Recommended
Remote-Sensing Image Processing
Earth-observation and remote-sensing payloads benefit directly from the RTAX4000DL DSP blocks, which perform the multiply-accumulate operations needed for convolution, filtering, and image correction at payload data rates. The embedded SRAM with built-in FIFO control handles line-buffering between imaging sensors and downstream compression engines without external memory chips, improving reliability and reducing board area. With 4 million gates, the device integrates sensor timing generation, preprocessing, and formatting into one component, and its live-at-power-up antifuse configuration means imagery acquisition can begin immediately after power application with no configuration latency. The ceramic CQ352 flatpack's 48 mm x 48 mm footprint and guard-ring construction support the thermal and mechanical demands of optical payload electronics operating at -55C to +125C in vacuum.
Recommended
Telemetry and Telecommand Systems
Telemetry encoders, telecommand decoders, and spacecraft interface units are classic RTAX applications: they demand deterministic, always-on logic that survives years of radiation exposure without configuration errors. The RTAX4000DL-CQ352B implements CCSDS-style framing, enciphering, and time-tagging logic with its 36,960 CLBs, while the antifuse fabric guarantees the design is active within microseconds of power application - a requirement for command reception during safe mode. Its 166 input/166 output capability covers parallel bus interfaces to processors, transponders, and distribution switches. The 1.5 V core minimizes quiescent power during eclipse operations. Because this logic is mission-critical and one-time programmable, teams typically prototype on RTAX PROTO units in non-hermetic packages before committing flight-lot ceramic CQFP devices, per Microchip's documented flow.
Recommended
Launch Vehicle Avionics
Launch vehicles require avionics logic that is fully operational from battery activation through stage separation, with no configuration load time and tolerance to intense vibration and shock. The RTAX4000DL-CQ352B's live-at-power-up antifuse fabric makes it suitable for sequencing, safety-critical voting, and flight-event timing logic. The 352-terminal ceramic CQFP package with metal seal and guard ring withstands the mechanical environment of launch, and the -55C to +125C rating covers external stage thermal exposure. DSP blocks can additionally support GPS-correlated navigation preprocessing. Designers should note that the antifuse device is one-time programmable: flight software and logic must be frozen and verified on prototype hardware first. Screening-grade selection (B, V, E flows) should follow the program's component specification, and the 1.5 V core keeps the power budget small for battery-limited ascent profiles.
Recommended
Radiation Test and Space Qualification Platforms
The RTAX4000DL-CQ352B serves as the flight-representative device in radiation test campaigns and qualification units. Test engineers program representative designs into CQ352 units and expose them to heavy-ion and total-ionizing-dose sources to validate SEE rates for the mission environment, since the antifuse configuration structure is itself immune to configuration upset and the test focuses on user-logic error rates. Embedding SRAM FIFOs and DSP MACs in the test design exercises the exact blocks used in flight, giving representative cross-section data. The wide -55C to +125C range allows combined environmental testing, and the 166-I/O count supports extensive error-monitoring instrumentation. Results feed the mission's rad-hard-by-design report, and per the Microchip datasheet, PROTO units with identical timing attributes can reduce test-article cost before flight-lot devices are irradiated.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000DL-CQ352B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000DL-CQ352V | RTAX4000DL-1CQ352V | RTAX4000D-CQ352B | RTAX4000SL-CQ352B |
|---|---|---|---|---|---|
| Package | 352-terminal CQFP (CQ352) | 352-terminal CQFP - same | 352-terminal CQFP - same | 352-terminal CQFP - same | 352-terminal CQFP - 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 / CLBs | 36,960 CLBs | 36,960 CLBs | 55,440 logic cells | 33,600 cells | [DATA_NEEDED] |
| DSP MAC Blocks | Yes (DL variant) | Yes | Yes | No (logic-only) | No (SL fabric) |
| Speed Grade | Standard | Standard | -1 (faster) | Standard | Standard |
| Core Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C |
| Screening Flow Grade | B | V | V | B | B |
Key Differentiators
- Dedicated DSP multiply-accumulate blocks (vs RTAX4000D-CQ352B)
- 4M gate density in hermetic CQFP (vs RTAX2000SL-CQ352B)
- Live-at-power-up antifuse configuration (vs A3PE3000-1FG484I)
Design Notes
RTAX antifuse FPGAs are one-time programmable: once a flight unit in the ceramic CQ352 package is programmed, an error cannot be corrected. Complete functional, timing, and simulation sign-off on PROTO prototype units (non-hermetic ceramic, same timing attributes per Microchip datasheet) before programming any flight device. Freeze the Libero software version and design checksum in the mission data package, and document the exact design file hash that was programmed into each serial-numbered flight unit for traceability.
The RTAX4000DL uses a 1.5 V core with separate I/O supplies; [DATA_NEEDED: exact I/O bank voltage options]. Design the power tree so core and I/O rails sequence per the Microchip RTAX datasheet power-up requirements, and budget static, dynamic, and I/O switching power using Microchip's power calculator with mission-specific toggle rates. Because spacecraft rails are current-limited, verify inrush during power-up and account for worst-case eclipse cold-start at -55C, when timing derating and supply margins are tightest.
The 48 mm x 48 mm CQFP-352 has 0.5 mm-pitch leads that require careful footprint design for reliable solder fillets under launch vibration. Follow the Microchip datasheet land-pattern recommendations, use no-clean flux compatible with vacuum outgassing requirements, and inspect all 352 joints with X-ray or automated optical inspection. Distribute ground planes under the package, place decoupling capacitors close to all VDD pins, and guard sensitive analog traces away from the guard-ring region to minimize crosstalk on the 166 user I/O.
With up to 166 user outputs switching, ground bounce on a CQFP package is a real risk at high toggle rates. Limit simultaneously switching outputs per ground bank, use Microchip's IBIS models in board-level simulations, and where possible route wide buses on adjacent layers with a continuous reference plane. For on-board data buses, consider series termination resistors near the FPGA to damp reflections, since spaceflight boards often use low-loss but unterminated point-to-point links.
Compliance Information
Space-grade ceramic hermetic package; specific environmental compliance declarations (RoHS/REACH exemptions for aerospace) not stated in provided data - request declarations from Microchip at quotation.
