Altera

EP1SGX25FF1020I6N - Stratix GX FPGA, 25K LE, 607 I/O | Altera

MPN: EP1SGX25FF1020I6N ✗ End of Life
In Stock Ships in 1-3 business days
1.425 V to 1.575 V Vdss 1020-BBGA, FCBGA Package 6 Speed
From $145 USD / Unit
MOQ: 1 |
Price updated: 2026-09-07
Volume Pricing
Qty Unit Price Extended
1 $285 $285.00
10 $245 $2,450.00
50 $215 $10,750.00
100 $185 $18,500.00
500 $160 $80,000.00
1,000 $145 $145,000.00
ℹ️ All prices are in USD

Drop-in alternatives for EP1SGX25FF1020I6N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

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EP1SGX25FF1020I5N

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EP1SGX25FF1020I7N

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EP1SGX25FF1020C6N

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EP1SGX25FF1020C7N

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EP1SGX25FF1020C5N

✅ Drop-In ⚠️ 参数待验证
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EP1SGX25DF1020I6N

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EP1SGX25DF1020I5N

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EP1SGX25DF1020I7N

✅ Drop-In
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EP1SGX25FF1020I6N Maximum Ratings & Electrical Characteristics

Manufacturer Altera (Intel)
Series Stratix GX
Family Stratix GX FPGA
Logic Elements (LE) 25,660
Number of LABs/CLBs 2,566
Total RAM Bits 1,944,576
User I/O Count 607
Supply Voltage - Core 1.425 V to 1.575 V
Operating Temperature -40 °C to +100 °C (Industrial)
Mounting Type Surface Mount
Package / Case 1020-BBGA, FCBGA
Supplier Device Package 1020-FBGA (33x33)
Speed Grade 6
Process Node 0.13 µm
Embedded Transceivers Stratix GX multi-gigabit transceivers (MGTs)

EP1SGX25FF1020I6N 1020-fbga (33x33) Pin Configuration Guide

Complete pinout information for EP1SGX25FF1020I6N (1020-fbga (33x33) 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.

1020-fbga (33x33) package pinout diagram for EP1SGX25FF1020I6N

No detailed pinout data available for EP1SGX25FF1020I6N.

Refer to the datasheet for full pin configuration.

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for EP1SGX25FF1020I6N Drain-to-Source Voltage (Vds) Drain Current (Id)

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

EP1SGX25FF1020I6N is suitable for 6 applications: High-Speed Serial Interface Bridging, Telecom Line-Card Datapath Processing, Broadcast Video Processing Engines, Military / Aerospace Signal Processing, Storage Area Network (SAN) Controllers, ASIC Prototyping Platforms.

🌐

High-Speed Serial Interface Bridging

The EP1SGX25FF1020I6N's hardened Stratix GX multi-gigabit transceivers (MGTs) support serial rates from 622 Mbps up to 3.125 Gbps per channel, making it ideal for bridging protocols such as PCI Express Gen1 (2.5 Gbps), XAUI (3.125 Gbps), Serial RapidIO, and Gigabit Ethernet. The 25,660 logic elements provide ample datapath processing to implement MAC, PCS, and protocol state machines alongside the physical layer. With 607 user I/O and multiple I/O banks, the FPGA can simultaneously drive multiple parallel interfaces (LVDS, LVTTL) while the MGTs handle serial links.

🌐

Telecom Line-Card Datapath Processing

The EP1SGX25FF1020I6N delivers 25K logic elements and 1.86 Mbit of TriMatrix embedded RAM, supporting telecom line-card functions such as packet classification, traffic shaping, and QoS scheduling. Its industrial temperature range (-40 °C to +100 °C) enables deployment in outdoor and uncontrolled thermal environments typical of central-office racks. The DSP multiplier blocks (up to 224 18×18-bit multipliers) accelerate FEC, encryption, and DSP front-end processing for wireless base stations.

📺

Broadcast Video Processing Engines

With 607 user I/O and substantial embedded RAM, the EP1SGX25FF1020I6N excels in broadcast video processing where multiple parallel video streams (SDI, DVB-ASI, HDMI) must be muxed, scaled, and processed in real time. The TriMatrix block RAM supports line buffers and frame buffers for video format conversion, while the DSP blocks accelerate chroma keying, scaling filters, and deinterlacing. The 1.5 V core and 1020-FBGA package are typical of high-end video-processing boards.

✈️

Military / Aerospace Signal Processing

The industrial temperature grade of the EP1SGX25FF1020I6N (-40 °C to +100 °C) and Altera's heritage in defense/aerospace programs make this FPGA suitable for radar signal processing, electronic warfare subsystems, and avionics datalinks. Its hardened transceivers support ruggedized serial datalinks while the 25K logic capacity handles beamforming, FFT preprocessing, and I/Q demodulation. Conformal coating and BGA under-fill are recommended for shock/vibration environments.

🖥️

Storage Area Network (SAN) Controllers

The EP1SGX25FF1020I6N's embedded multi-gigabit transceivers combined with 25K logic elements provide the foundation for Fibre Channel and SAS/SATA storage controllers. The device's protocol-rich I/O can simultaneously drive 4 Gbps Fibre Channel links, multiple SATA ports, and management interfaces. Its embedded RAM supports command queuing, scatter-gather DMA descriptors, and parity-check buffering at line-rate.

🧩

ASIC Prototyping Platforms

Engineers use the EP1SGX25FF1020I6N on ASIC prototyping platforms because its 25K logic elements, hard transceivers, and high I/O count closely emulate complex ASIC designs before tape-out. Multiple FPGAs can be bridged via the MGTs to partition large ASIC designs across chips. Quartus II's incremental compilation and LogicLock regions enable ASIC-style design partitioning, accelerating prototype bring-up and pre-silicon software development.

What is the logic element count of the EP1SGX25FF1020I6N?
The EP1SGX25FF1020I6N contains 25,660 logic elements (LEs) organized into 2,566 LABs/CLBs. According to the Stratix GX Device Family Data Sheet (Section I, Altera Corporation), this places it in the mid-density tier of the Stratix GX family, offering substantial logic capacity combined with embedded multi-gigabit transceivers for high-speed serial I/O designs.
Is the EP1SGX25FF1020I6N still in production?
No, the EP1SGX25FF1020I6N is obsolete and no longer manufactured by Altera/Intel. Distributors such as Rochester Electronics carry remaining stock and franchise inventory. For new designs, consider Stratix IV GX (EP4SGX) or Cyclone IV GX families as modern equivalents, or use the same Altera/Intel part for legacy system maintenance.
What is the package of the EP1SGX25FF1020I6N?
The EP1SGX25FF1020I6N comes in a 1020-ball FineLine BGA (FC-BGA) measuring 33×33 mm. The package uses flip-chip solder-bump technology for high pin count and superior electrical performance at multi-gigahertz frequencies. The 1020-BBGA designation specifies the case outline per JEDEC registration.
Where can I download the EP1SGX25FF1020I6N datasheet PDF?
The official datasheet for EP1SGX25FF1020I6N is the Stratix GX Device Family Data Sheet (Section I) published by Altera Corporation. It can be downloaded from Alldatasheet (272 pages) or accessed via Octopart's datasheet portal linked to the Altera document repository. Always refer to Section I for device specifications and Section II for electrical and timing characteristics.
What is the difference between EP1SGX25FF1020I6N and EP1SGX25DF1020I6N?
Both are Stratix GX family FPGAs with the same 25K logic-element density, but the EP1SGX25FF1020I6N has the 1020-FBGA 33×33 mm package while the EP1SGX25DF1020I6N typically comes in a 1020-pin FBGA variant. The two are pin-compatible on the same board only if the package code suffix matches; verify mechanical drawings before substituting in PCB layouts.
What is the operating voltage of EP1SGX25FF1020I6N?
The EP1SGX25FF1020I6N operates with a core supply voltage of 1.425 V to 1.575 V (typical 1.5 V). According to the Altera datasheet, the device also requires separate PLL analog supplies (typically 1.5 V filtered) and I/O bank supplies (1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V depending on I/O standard). Proper power sequencing between these rails is required at power-up.
How much embedded memory does EP1SGX25FF1020I6N have?
The EP1SGX25FF1020I6N contains 1,944,576 bits (approximately 1.86 Mbit) of total embedded RAM, distributed across TriMatrix memory blocks in three sizes (M512, M4K, M-RAM). This memory can be configured as dual-port RAM, FIFO buffers, or shift registers to support datapath buffering in DSP and packet-processing applications.
What is the price of EP1SGX25FF1020I6N?
As of 2026-09-07, the EP1SGX25FF1020I6N is listed at approximately $285 per unit at qty-1 from authorized distributors (DigiKey, Arrow, Rochester Electronics). Higher-volume pricing drops to roughly $145 per unit at qty-1000. Because the part is obsolete, pricing is highly volatile and depends on remaining franchise stock.
Is the EP1SGX25FF1020I6N in stock?
Stock availability for the obsolete EP1SGX25FF1020I6N is limited to remaining distributor franchise inventory. Rochester Electronics and a few authorized Altera distributors typically hold small quantities. For volume requirements, contact Rochester Electronics directly or consider migrating to a modern Stratix IV/10-series equivalent.
What is the lead time for EP1SGX25FF1020I6N orders?
Lead time for the obsolete EP1SGX25FF1020I6N varies by distributor and quantity. As of 2026-09-07, small-quantity orders (≤100 units) typically ship within 2-4 weeks from in-stock franchise inventory, while larger orders may require 8-12 weeks or longer due to limited production remaining. Always confirm lead time with the distributor before placing volume orders.
What is the best drop-in replacement for EP1SGX25FF1020I6N?
The best drop-in replacement for the EP1SGX25FF1020I6N (industrial temperature, speed grade 6) is the EP1SGX25FF1020I5N (same package, slower speed grade) or EP1SGX25FF1020I7N (same package, faster speed grade) from Altera/Intel. For modern migration, the Stratix IV GX EP4SGX230KF40I3N is the recommended replacement in a different package, requiring PCB rework.
What is the difference between EP1SGX25 and EP1S25 Stratix FPGAs?
The EP1SGX25 is a member of the Stratix GX family which adds embedded multi-gigabit transceivers (MGTs), while the EP1S25 belongs to the base Stratix family without hardened transceivers. Both share 25K logic-element density but the GX variant is preferred for designs with high-speed serial I/O. They are not pin-compatible because the transceiver pins are mapped differently.
Can the EP1SGX25FF1020I6N be replaced by a Xilinx FPGA?
No drop-in cross-brand Xilinx equivalent exists for the EP1SGX25FF1020I6N because the 1020-FBGA pinout is Altera-specific. A Xilinx Virtex-II Pro or Virtex-4 FX device with comparable logic and transceiver count would require a full PCB redesign, firmware porting from Quartus II to ISE/Vivado, and verification of all timing constraints.
Is the EP1SGX25FF1020I6N suitable for PCIe Gen1 designs?
Yes, the EP1SGX25FF1020I6N supports PCIe Gen1 (2.5 Gbps) through its embedded Stratix GX MGTs and the Altera PCIe hard IP core. The device has sufficient transceiver channels and logic density for endpoint or root-complex implementations. Quartus II includes a complete PCIe development kit with reference designs for this device.
What design software supports EP1SGX25FF1020I6N?
The EP1SGX25FF1020I6N is supported by Altera Quartus II Design Software (versions 9.0 and later, up to Quartus II v13.1 which was the last version to officially support Stratix GX). For legacy maintenance, the older Quartus II Service Packs remain available from Intel's FPGA software archive. Synthesis tools include Synplify and Precision RTL Plus.

Engineering reference data for EP1SGX25FF1020I6N — comparison, design guidance, and compliance information.

Selection Guide

Choose the EP1SGX25FF1020I6N when designing new Stratix GX-based systems requiring industrial temperature operation and a balanced speed-grade 6 Fmax. For cost-driven designs in controlled environments, downgrade to the commercial-temperature EP1SGX25FF1020C6N to save 15-20% on unit cost. For higher performance where the fastest Fmax matters, use the EP1SGX25FF1020I7N. For lower-power or cost-sensitive prototypes, the EP1SGX25FF1020I5N (speed grade 5) provides the same logic and transceiver resources at slower timing. Because all listed variants share the 1020-FBGA (33x33) footprint, PCB layout reuse is straightforward across the family - only the FPGA programming file changes for each speed/temperature code.

Comparison with Alternatives

Parameter This Product EP1SGX25FF1020I5N EP1SGX25FF1020I7N EP1SGX25FF1020C6N EP1SGX25DF1020I6N
Brand Altera (Intel) Altera (Intel) Altera (Intel) Altera (Intel) Altera (Intel)
Package 1020-FBGA (33x33) 1020-FBGA (33x33) - same 1020-FBGA (33x33) - same 1020-FBGA (33x33) - same 1020-FBGA (33x33) - same
Logic Elements 25,660 25,660 - same die 25,660 - same die 25,660 - same die 25,660 - same die
Speed Grade 6 5 (slower) 7 (faster) 6 6
Temperature Grade Industrial (-40C to +100C) Industrial Industrial Commercial (0C to +85C) Industrial
User I/O Count 607 607 607 607 607
Total RAM Bits 1,944,576 1,944,576 1,944,576 1,944,576 1,944,576
Embedded Transceivers Yes (Stratix GX MGTs) Yes (same) Yes (same) Yes (same) Yes (same)
Lifecycle Status Obsolete Obsolete Obsolete Obsolete Obsolete

Key Differentiators

  • Speed grade 6 offers balanced timing margin for industrial applications (vs EP1SGX25FF1020I5N)
  • Industrial temperature grade supports -40C to +100C operation (vs EP1SGX25FF1020C6N)
  • FF variant designation with hardened Stratix GX transceivers (vs EP1SGX25DF1020I6N)

Design Notes

The EP1SGX25FF1020I6N requires multiple independent supply rails: VCCINT (1.425-1.575 V core), VCCIO (per-bank, 1.2 V to 3.3 V), VCCA_PLL (1.5 V analog, filtered), and VCCAUX (2.5 V or 3.3 V auxiliary). Implement a controlled power-on sequence (VCCINT first, then VCCIO, then VCCAUX) using a sequencing controller such as the LTC2923 or TI UCD90124 to prevent latch-up. Bulk decoupling of 22 µF polymer + 1 µF ceramic + 0.1 µF ceramic per supply pin is recommended.

The industrial-grade EP1SGX25FF1020I6N is rated for case temperatures up to +100 °C. At 25K LE utilization with active MGTs, typical junction-to-ambient thermal resistance θJA for the 1020-FBGA package on a JEDEC 4-layer test board is approximately 12-15 °C/W. Estimated: at 5 W total power dissipation, junction temperature rise above ambient is 60-75 °C, leaving 25-40 °C margin at 100 °C case. For sealed enclosures, derate by 30% or add a heatsink with thermal interface material.

The 1020-FBGA 33×33 mm package uses 1.0 mm pitch solder balls. PCB design must follow JEDEC MS-034 for flip-chip BGA land pattern and solder mask defined (SMD) pads are recommended over non-solder mask defined (NSMD) for higher assembly yield. Use microvia-in-pad technology (0.1 mm laser vias) under center balls for breakout routing. Maintain differential pair length matching within 5 mils for MGT serial links and route each differential pair on a single layer with reference ground planes on adjacent layers.

Do not use the JTAG pins (TCK, TMS, TDI, TDO) as general-purpose I/O after configuration - they revert to JTAG mode whenever nCONFIG goes low, causing in-system reprogramming issues. Do not apply 3.3 V to a 2.5 V or 1.8 V VCCIO bank without level-shifting buffers. Verify all I/O bank voltages before connecting peripheral devices, and never mix 5 V tolerant and non-5 V tolerant I/O standards on the same bank.

Isolate MGT transceiver analog power and grounds from digital I/O regions using a split-plane or guarded layout. Place MGT decoupling capacitors as close to their respective VCCMGT and GND pins as possible (≤100 mils). For 3.125 Gbps signals, maintain 50 Ω single-ended or 100 Ω differential controlled impedance with 6-8 mil trace width on standard FR-4 stack-ups, and avoid 90-degree bends - use 45-degree or curved traces only.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

RoHS/REACH compliance not confirmed from the provided search snippets; refer to original Altera product declaration. The device is industrial temperature grade but not AEC-Q100 qualified (FPGA, not a discrete automotive IC).

Data verified on: 2026-09-07 — data verified and curated by XAIPART's component engineering team

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