EP1SGX25DF1020C7N
EP1SGX25DF1020C7N - 25,660 LEs Stratix GX FPGA, 1020-FBGA | Intel
The Intel (formerly Altera) EP1SGX25DF1020C7N is a high-density Stratix GX family Field-Programmable Gate Array (FPGA) fabricated on a 130 nm CMOS process, delivering 25,660 logic elements, 2,566 LABs, and 1,944,576 bits of embedded memory in a 1020-ball Fine-pitch BGA (FC-FBGA) package. The device integrates up to 20 full-duplex multi-gigabit transceivers operating up to 3.1875 Gbps, hardened PCI Express and SerialLite II IP, and dedicated DSP blocks for high-throughput signal processing. The C7 speed grade and commercial 0°C to 85°C temperature range target networking, baseband, and high-speed serial I/O applications where deterministic latency and signal integrity are critical.
An FPGA is a reconfigurable integrated circuit that lets engineers implement arbitrary digital logic, memory blocks, and high-speed I/O through a programmable fabric of look-up tables, flip-flops, routing, and hard IP cores. FPGAs occupy a tier above microcontrollers (fixed instruction set) and below application-specific integrated circuits (ASICs) in the design-flexibility spectrum. The Stratix GX family specifically targets serial connectivity, embedding transceiver physical coding sublayers, byte serializers, and rate-matching FIFOs directly in silicon, which dramatically reduces external PHY count and BOM cost compared to FPGA-plus-discrete-PHY designs.
Key features include 25,660 logic elements, 1,944,576 embedded RAM bits, 607 user I/O pins, 2,566 LABs/CLBs, and 20 embedded transceivers supporting protocols such as PCI Express x1/x4/x8, SerialLite II, Gigabit Ethernet, and XAUI. The 33 mm × 33 mm FC-FBGA-1020 package uses a 1.0 mm ball pitch, enabling high-density board routing while remaining compatible with mainstream PCB fabrication processes. On-chip PLL count and global clock network details vary by configuration; the Quartus II design software generates the exact resource utilization report at compile time.
The Stratix GX architecture combines a TriMatrix embedded memory structure (M512/M4K/M-RAM blocks) with dedicated DSP blocks and embedded transceivers to support DSP-intensive and high-bandwidth designs in a single device. Hard PCI Express endpoint and physical coding sublayer cores allow direct connection to a host CPU or backplane without external bridges, which is a major advantage over soft-IP implementations on pure-logic FPGAs. The 1.5 V core supply with 130 nm process technology balances performance and power for the Stratix generation.
Typical applications include 10 Gbps network switching, wireless baseband processing, radar and SIGINT front-ends, high-performance computing coprocessors, and broadcast video processing. The combination of multi-gigabit transceivers, large memory bandwidth, and PCI Express endpoint IP makes the EP1SGX25DF1020C7N particularly well suited to line cards, soft routers, and protocol offload engines. The 1020-FBGA footprint also supports high I/O count, which is required when aggregating many lower-speed interfaces alongside high-speed serial links.
When designing with this device, plan power sequencing carefully: Stratix GX requires multiple supply rails (VCCINT, VCCIO, VCCA, VCCP, and transceiver supplies VCCE/VCCT) and strict ramp-rate control. Use the Quartus II PowerPlay early power estimator before final pin assignment to size decoupling, regulators, and thermal management. Signal integrity on 3.125 Gbps links requires matched-differential routing, AC coupling capacitors near the transmitter, and reference-clock jitter below the protocol's maximum tolerable value.
This page synthesizes distributor pricing, drop-in package-compatible variants, and practical design notes for the EP1SGX25DF1020C7N that are not aggregated on the manufacturer datasheet alone.
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