EP1SGX25FF800C5N - Stratix GX FPGA, 25K LE, 4x 3.1875 Gbps SERDES | Altera
MPN: EP1SGX25FF800C5N ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1450 | $1,450.00 |
| 10 | $1380 | $13,800.00 |
| 100 | $1290 | $129,000.00 |
| 250 | $1225 | $306,250.00 |
| 500 | $1175 | $587,500.00 |
Drop-in alternatives for EP1SGX25FF800C5N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EP1SGX25FF800C6N
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EP1SGX25FF800C7N
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EP1SGX25DF800C5N
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View Datasheet →EP1SGX25FF1020C5N
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$1580 / Unit
View Datasheet →EP1S25F780C5N
✅ Drop-In✓ In Stock
$595 / Unit
View Datasheet →EP1SGX25FF800C5N Maximum Ratings & Electrical Characteristics
| Family | Stratix GX |
| Logic Elements | 25,660 |
| Embedded RAM | 2,243 Kbits |
| DSP Blocks | 10 (16x16 multipliers) |
| Embedded Multipliers | 160 (18x18 equivalent via DSP blocks) |
| Transceiver Channels | 4 full-duplex |
| Transceiver Data Rate (max) | 3.1875 Gbps |
| Maximum User I/O | 426 |
| PLLs | 8 (4 enhanced + 4 fast) |
| Core Voltage | 1.5 V |
| Process Node | 90 nm |
| Package | 780-pin FineLine BGA (FBGA-780) |
| Speed Grade | 5 |
| Operating Temperature | 0 C to +85 C (commercial) |
| RoHS Status | Compliant (lead-free) |
| MSL Level | 3 (per JEDEC J-STD-020) |
EP1SGX25FF800C5N 780-pin fineline bga (fbga-780) Pin Configuration Guide
Complete pinout information for EP1SGX25FF800C5N (780-pin fineline bga (fbga-780) 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 EP1SGX25FF800C5N.
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
EP1SGX25FF800C5N is suitable for 6 applications: PCI Express Endpoint / Root Complex, SerialLite-II Backplane SERDES Bridge, 1G/10G Ethernet MAC Implementation, SONET/SDH Framer Interface, High-Speed Protocol-Aware Traffic Management, Custom Test & Measurement Backplane.
PCI Express Endpoint / Root Complex
The EP1SGX25FF800C5N is well suited for PCI Express Gen1 endpoint and root-complex designs because it integrates hard PCI Express IP blocks that map directly onto the four embedded 3.1875 Gbps SERDES channels. With x1 and x4 lane widths supported at 2.5 Gbps, the device handles protocol-aware traffic without consuming logic fabric, leaving the 25,660 logic elements and 10 DSP blocks free for application-layer accelerators. The FBGA-780 package provides ample user I/O for sideband signals and reference clock distribution. Engineers should budget adequate VCCT/VCCR decoupling and reference-clock jitter performance because PCIe Gen1 requires tight transmit jitter compliance. Compared to a soft SERDES implementation on a non-GX FPGA, the hard PCIe IP reduces logic usage by roughly 8K LE and shortens timing closure.
Recommended
SerialLite-II Backplane SERDES Bridge
Stratix GX parts including EP1SGX25FF800C5N were widely adopted for SerialLite-II chip-to-chip and backplane SERDES bridges that aggregate multiple slower protocols over a few high-speed links. Each of the four transceivers at 3.1875 Gbps yields up to 12.7 Gbps raw bandwidth, while transmit pre-emphasis and receive equalization equalize FR4 backplane loss up to roughly 40 inches. With 25,660 logic elements and 2,243 Kbits of RAM, the device can implement custom bridging state machines and protocol-aware traffic shaping alongside the physical link. This combination makes it a strong fit for telecom backplanes, storage bridges, and high-end test equipment that need deterministic latency and multi-gigabit serial connectivity without external PHY silicon.
Recommended
1G/10G Ethernet MAC Implementation
With embedded Gigabit Ethernet MAC intellectual property and four 3.1875 Gbps SERDES channels, the EP1SGX25FF800C5N can implement a single 10G Ethernet MAC by bonding four channels together, or four independent 1G Ethernet MACs using one SERDES each. The hard PCS/PMA cores implement XGMII and GMII interfaces, which the user logic connects to for frame construction and statistics. The 2,243 Kbits of embedded RAM provides ample buffering for cut-through forwarding in low-latency switches. Power designers must provision adequate VCCT/VCCR current and manage reference-clock jitter to meet IEEE 802.3ae compliance. This combination of logic density, embedded MAC IP, and high-speed SERDES is well matched to metro Ethernet and enterprise switch designs.
Recommended
SONET/SDH Framer Interface
Telecom OEMs historically deployed the EP1SGX25FF800C5N in SONET/SDH framer interfaces because its four 3.1875 Gbps SERDES channels can transport OC-48/STM-16 (2.488 Gbps) signals with significant protocol margin. The 25,660 logic elements provide capacity for framer state machines, pointer justifications, and overhead processing, while 2,243 Kbits of embedded RAM buffer payload data between mappings. The FBGA-780 footprint accommodates the extensive user I/O required for tributary interfaces and system backplane buses. Designers should follow Altera's reference clock and power-supply decoupling recommendations for telecom-grade jitter performance. This makes the EP1SGX25FF800C5N a recognized building block in add-drop multiplexers, digital cross-connects, and SONET/SDH test equipment.
Recommended
High-Speed Protocol-Aware Traffic Management
Beyond pure SERDES bridging, the EP1SGX25FF800C5N enables protocol-aware traffic management because the 10 DSP blocks support packet classification and policing at line rate, and the 2,243 Kbits of embedded RAM hold flow-state tables and queue descriptors. The four 3.1875 Gbps SERDES channels aggregate multiple lower-speed links into a single high-speed uplink, while the hard PCS/PMA blocks handle 8b/10b encoding and clock-data recovery. With 25,660 logic elements, the device can run custom scheduling algorithms and shaping engines alongside the physical layer. This makes it attractive for QoS-aware switches, deep-packet-inspection appliances, and high-end storage controllers that need both protocol intelligence and multi-gigabit connectivity.
Recommended
Custom Test & Measurement Backplane
Test and measurement OEMs used the EP1SGX25FF800C5N to build custom backplanes that aggregate multiple instrument channels because its four 3.1875 Gbps SERDES channels can transport acquired data from analog front ends to host processors with deterministic latency. The 25,660 logic elements and 10 DSP blocks provide capacity for trigger logic, real-time DSP, and on-board signal processing, while 426 user I/O accommodate front-end ADC/DAC interfaces and timing buses. Transmit pre-emphasis and receive equalization keep signal integrity across long backplane traces. Compared with discrete SERDES, the integrated transceiver plus fabric combination lowers BOM cost and simplifies PCB layout. This is well suited to high-channel-count oscilloscopes, spectrum analyzers, and protocol testers.
Recommended
Recommended Products Summary
Engineering reference data for EP1SGX25FF800C5N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1SGX25FF800C6N | EP1SGX25FF800C7N | EP1SGX25DF800C5N | EP1SGX25FF1020C5N | EP1S25F780C5N |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 780-pin FineLine BGA (FBGA-780) | 780-pin FineLine BGA (FBGA-780) - same | 780-pin FineLine BGA (FBGA-780) - same | 780-pin FineLine BGA (FBGA-780) - same | 1020-pin FineLine BGA (FBGA-1020) - different | 780-pin FineLine BGA (FBGA-780) - same |
| Logic Elements | 25,660 | 25,660 | 25,660 | 25,660 | 25,660 | 25,660 |
| Embedded RAM (Kbits) | 2,243 | 2,243 | 2,243 | 2,243 | 2,243 | 2,243 |
| SERDES Channels | 4 x 3.1875 Gbps | 4 x 3.1875 Gbps | 4 x 3.1875 Gbps | 4 x 3.1875 Gbps (chip-to-chip optimized) | 4 x 3.1875 Gbps | 0 (no embedded SERDES) |
| Speed Grade | 5 | 6 | 7 | 5 | 5 | 5 |
| DSP Blocks | 10 | 10 | 10 | 10 | 10 | 10 |
| Process Node | 90 nm | 90 nm | 90 nm | 90 nm | 90 nm | 130 nm |
Key Differentiators
- Speed grade 5 is the fastest commercial timing bin in the Stratix GX FF family (vs EP1SGX25FF800C6N)
- FF suffix carries integrated pre-emphasis and receive equalization (vs EP1SGX25DF800C5N)
- Hard PCI Express and Gigabit Ethernet IP blocks free fabric for application logic (vs EP1S25F780C5N)
Design Notes
The EP1SGX25FF800C5N requires separate analog (VCCT/VCCR) and digital (VCC) supply rails for the SERDES blocks. Provide a low-noise LDO or isolated switching regulator with bulk and decoupling capacitors within 100 mil of every transceiver power pin. Estimated: at 25,660 LE utilization, 4 active SERDES channels, and 200 MHz fabric clock, total power consumption is roughly 4-6 W, so a small heatsink or substantial copper pour is recommended for the FBGA-780 footprint.
Route SERDES differential pairs as 100 ohm controlled-impedance microstrip or stripline with matched lengths within the tolerance specified by the Altera Stratix GX device handbook. Place 0.1 uF MLCCs in parallel with bulk capacitors on every power pin, and ensure the reference clocks feeding the CDR PLLs are routed as 100 ohm differential pairs with 50 ohm termination. Keep SERDES traces away from noisy digital switching signals to minimize deterministic jitter.
Pre-Stratix IV Altera silicon does NOT share pin maps with newer Stratix IV/V/10 families. Do not assume FBGA-780 pinout compatibility between EP1SGX25FF800C5N and Stratix IV GX parts of the same package; the ball assignments differ. Verify with Quartus II pin planner before reusing a layout from a Stratix IV design. Also note the trailing "N" denotes lead-free, RoHS-compliant packaging - verify with your contract manufacturer that the reflow profile is compatible with lead-free BGA assembly.
At 3.1875 Gbps, channel loss and crosstalk become significant on FR4 backplanes. Use the Stratix GX transceiver tool kit to model pre-emphasis and equalization settings, and budget at least 6 inches of trace length difference between transmit and receive pairs when designing for backplane SERDES. Reference clock jitter must be below 0.7 ps RMS for 3.125 Gbps compliance.
Compliance Information
Trailing N suffix denotes lead-free / RoHS-compliant packaging. AEC-Q100 not applicable for FPGAs. Halogen-free status not documented in verified web data.
